US20090179391A1 - Slide play apparatus and blade - Google Patents
Slide play apparatus and blade Download PDFInfo
- Publication number
- US20090179391A1 US20090179391A1 US12/293,779 US29377907A US2009179391A1 US 20090179391 A1 US20090179391 A1 US 20090179391A1 US 29377907 A US29377907 A US 29377907A US 2009179391 A1 US2009179391 A1 US 2009179391A1
- Authority
- US
- United States
- Prior art keywords
- board
- slide
- blade
- player
- play apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C5/00—Skis or snowboards
- A63C5/03—Mono skis; Snowboards
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C17/00—Roller skates; Skate-boards
- A63C17/0046—Roller skates; Skate-boards with shock absorption or suspension system
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C5/00—Skis or snowboards
- A63C5/03—Mono skis; Snowboards
- A63C5/031—Snow-ski boards with two or more runners or skis connected together by a rider-supporting platform
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C5/00—Skis or snowboards
- A63C5/04—Structure of the surface thereof
- A63C5/048—Structure of the surface thereof of the edges
- A63C5/0485—Complementary or supplementary ski edges
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C2203/00—Special features of skates, skis, roller-skates, snowboards and courts
- A63C2203/46—Skateboards or boards for snow having superimposed decks
Definitions
- the present invention relates to a slide play apparatus for sliding on a surface of snow, lawn, or the like.
- Slide play apparatuses for sliding on a slope with a player's own weight have been known such as a snowboard for sliding on a snow surface.
- a snowboard which has been used according to previously existing technology is manufactured from a single board formed of a substantially oval as viewed from above.
- a lower surface of the board is used as a sliding surface, and an upper surface, as a boarding surface on which a player rides. The player can make a turn to right or left by transmitting his/her weight shift onto the board (see Japanese Published Patent Application Publication No. 2004-160095).
- snowboards are, however, manufactured from a single board and are formed of a substantially oval as viewed from above. Thus, sliding fun and feeling that a player on such snowboards receives from a snow surface is not so much different from one another. Further, it is only a single board that is interposed between the snow surface and the feet of a player, so that an impact which the player receives from the snow surface is extremely large.
- the present invention is made in an attempt to solve the problems and to provide: a slide play apparatus for sliding on a slope not only a surface of snow but also a surface of lawn, sand, or the like, which can reduce a physical load subjected to the player and obtain sliding fun different from that obtained from the apparatuses according to previously existing technology; and a blade suited to cushioning the impact.
- a slide play apparatus which includes: a slide board having a first edge at an outer end and sliding on a slope; an upper board positioned above the slide board; a nose board connecting one end of the slide board to one end of the upper board; and a tail board connecting the other end of the slide board to the other end of the upper board, and which is formed of a substantial cylinder.
- the slide play apparatus is formed of a substantial cylinder, and the slide board and the upper board positioned above the slide board are connected with the nose board and the tail board. Therefore, the nose board and the tail board function as cushions to cushion an impact applied to the feet of a player. Since the impact applied to the feet of the player is cushioned, the player can have sliding fun and feeling different from that obtained from the apparatuses according to previously existing technology.
- the outer end may have a first side curve.
- the outer end has a first side curve. Therefore, a first edge disposed at the outer end and having a curve catches the sliding surface, which enables a turn to be made smoothly.
- a blade in the present invention, includes; a protruding portion protruding more outward than the outer end of the slide board; a second side curve formed on the outer end of the protruding portion and having a curvature larger than that of the first side curve; and a second edge disposed on the outer end of the protruding portion, and the blade may come in contact with the upper surface of the slide board.
- the blade has the protruding portion having the second edge positioned more outward than the first edge disposed on the outer end of the slide board, and the blade comes in contact with the upper surface of the slide board. Therefore, the slide board and the blade tilt when the player shifts his/her weight, which allows the second edge disposed on the protruding portion to catch the sliding surface.
- the second side curve having the curvature larger than that of the first side curve of the slide board is disposed on the outer end of the protruding portion, which allows a turn to be made sharply.
- the player can make various types of turns because the player can use the first edge or the second edge as he/she likes by adjusting the weight shift.
- the blade in the present invention means a board interposed between the slide board and the upper board, functioning as a cushion for absorbing an impact, and guiding a turn by contacting with the sliding surface.
- two blades are disposed crossly with respect the longitudinal axis X of the slide board to have a substantially X shape as viewed from above.
- Each blade may have a contact portion coming in contact with the upper surface of the slide board, curved portions disposed on a nose board side and on a tail board side, and a fixing portion fixed to the lower surface of the upper board.
- description of the present invention is made assuming that a left foot of a player is positioned frontward in a sliding direction.
- the two blades each having the curved portions disposed on the nose board side and on the tail board side are disposed crossly with respect the longitudinal axis X of the slide board to have a substantially X shape as viewed from above. That is, one blade is disposed at a part covering from a left foot tiptoe through a right foot heel. The other blade is disposed a part covering from a left foot heel through a right foot tiptoe. Therefore, if the player shifts the weight to a left foot tiptoe side, a distance between the fixing portion and the contact portion on the left foot tiptoe side is compressed, and, at the same time, because of reaction force, a distance between the fixing portion and the contact portion on a right foot heel side is extended. This facilitates a smooth weight shift of the player due to elasticity of the blade.
- the curved portion of the blade functions as a cushion, which cushions an impact applied to the feet of the player.
- a support member for reducing friction between the slide board and the blade and between the two blades may be disposed at respective portions at which the slide board and the blade, and the two blades are crossed.
- an elastic body may be interposed between the slide board and the upper board.
- the interposition of the elastic body between the slide board and the upper board enhances a cushioning property therebetween, which allows a flexible response to a vertical load subjected to the upper board and the slide board.
- a width of the sliding surface is smaller than that of the boarding surface.
- the frictional resistance of the sliding surface is reduced, and a sliding speed is increased. Additionally, a possible range of the weight shift is narrowed, thus enabling a turn to be made easily.
- the upper board may have a recessed portion which is depressed toward the slide board.
- a height of the foot of the player can be lowered, thus enabling the player to get on and off the slide play apparatus without difficulty. Further, a distance between the foot of the player and the slide board is reduced. This makes it possible to easily transmit the weight shift of the player onto the slide board, thus enabling a further smooth slide.
- the two blades are disposed crossly with respect the longitudinal axis X of the slide board between the slide board and the upper board disposed thereabove to have a substantially X shape as viewed from above.
- Each blade has the contact portion coming in contact with the upper surface of the slide board, the curved portions disposed on both ends of the contact portion, and the fixing portion fixing both ends of the blade to the lower surface of the upper board.
- Each blade further has a protruding portion protruding more outward than the outer end of the slide board.
- the blade with the curved portions provided therein is interposed between the slide board and the upper board. Therefore, an impact applied to the slide board and the upper board can be reduced.
- the slide play apparatus can cushion the impact applied to the feet of the player and can give the player sliding fun and feeling different from that obtained from the slide play apparatuses according to previously existing technology.
- FIG. 1 A perspective view showing a slide play apparatus according to a first embodiment.
- FIG. 2 Views each showing the slide play apparatus according to the first embodiment.
- FIG. 2( a ) is a side view showing the slide play apparatus.
- FIG. 2( b ) is a side view showing a body part thereof.
- FIG. 2( c ) is a cross sectional view showing the apparatus when cut along the line F-F in FIG. 2( b ).
- FIG. 2( d ) is an enlarged view of the part G in FIG. 2( c ),
- FIG. 3 A plan view showing the slide play apparatus according to the first embodiment.
- FIG. 4 A rear view showing the slide play apparatus according to the first embodiment.
- FIG. 5 A front view showing the slide play apparatus as viewed from a nose board according to the first embodiment.
- FIG. 6 Views each showing a blade according to the first embodiment.
- FIG. 6( a ) is a perspective view.
- FIG. 6( b ) is a cross sectional view when cut along the line H-H in FIG. 6( a ).
- FIG. 6( c ) is an enlarged view of the part I in FIG. 6( b ).
- FIG. 7 A cross sectional view when cut along the line D-D in FIG. 2 .
- FIG. 8 A cross sectional view when cut along the line E-E in FIG. 2 .
- FIG. 9 A cross sectional view when cut along the line A-A in FIG. 4 .
- FIG. 10 A cross sectional view when cut along the line B-B in FIG. 4 .
- FIG. 11 A cross sectional view when cut along the line C-C in FIG. 4 .
- FIG. 12 A front view showing the slide play apparatus in a resting state according to the first embodiment, in which a weight of a player acts thereon in a vertical direction.
- FIG. 13 A view showing the slide play apparatus in an operating state according to the first embodiment, in which a player shifts his/her weight to his/her left foot along a sliding direction.
- FIG. 14 Views each showing the slide play apparatus in an operating state according to the first embodiment.
- FIG. 14( a ) is a front view showing the state in which the player shifts his/her weight to a left foot front side (tiptoe side).
- FIG. 14( b ) is a front view showing the state in which the player shifts his/her weight to a left foot rear side (heel side).
- FIG. 15 A cross sectional view at a lapping portion La showing the slide play apparatus in an operating state according to the first embodiment, in which the player directs toward a central part C.
- FIG. 16 A perspective view showing the slide play apparatus in an operating state according to the first embodiment, in which the player makes a turn.
- FIG. 17 Views each showing a second embodiment.
- FIG. 17( a ) is a perspective view showing a slide play apparatus.
- FIG. 17( b ) is a cross sectional view when cut along the line J-J in FIG. 17( a ).
- FIG. 18 Views each showing the second embodiment.
- FIG. 18( a ) is a cross sectional view when cut along the line K-K in FIG. 17( a ).
- FIG. 18( b ) is a cross sectional view when cut along the line L-L in FIG. 17( a ).
- FIG. 19 A perspective view showing a third embodiment.
- FIG. 20 Views each showing a fourth embodiment.
- FIG. 19( a ) is a perspective view showing a slide play apparatus.
- FIG. 19( b ) is a cross sectional view when cut along the line V-V in FIG. 19( a ).
- FIG.( c ) is a sectional side view showing a body part.
- FIG. 21 Views each showing a support member according to the fourth embodiment.
- FIG. 21( a ) is a perspective view.
- FIG. 21( b ) is a side view.
- FIG. 22 An enlarged side view showing a joint according to the fourth embodiment.
- FIG. 1 indicating up, down, right, left, front, and rear are applicable to the description in whole, if not otherwise specified.
- a slide play apparatus 1 in the first embodiment includes: a body part 2 formed of a substantially elongated cylinder; a blade 3 including an upper blade 3 a and a lower blade 3 b; a spring 4 inserted between an upper board 6 and a slide board 7 of the body part 2 ; and support members 5 , 5 (see FIG. 2 ) disposed at a part (a central part C) at which the upper blade 3 a and the lower blade 3 b intersect.
- the body part 2 includes: an upper board 6 on which a player P rides; a slide board 7 for contacting with a sliding surface; a nose board 8 for connecting a left side end of the upper board 6 and a left side end of the slide board 7 ; and a tail board 9 for connecting a right side end of the upper board 6 and a right side end of the slide board 7 .
- the body part 2 is formed of a substantially elongated circle as viewed from a lateral side and is substantially symmetrical with respect to a vertical axis Z.
- the upper board 6 is formed of a substantially elongated circle having a constricted portion K in the middle thereof as viewed from above and is substantially symmetrical with respect to a longitudinal axis X and an across-the-width axis Y.
- An upper surface of the upper board 6 includes boarding portions 11 on which the player P rides.
- the blade 3 to be described later is fixed to a lower surface of the upper board 6 .
- a foot fixing instruments T (see FIG. 1 ) for fixing a foot of the player P is provided on an upper surface of the boarding portion 11 .
- a position of the foot fixing instrument T may be changed according to a height, a playing style, or the like of the player P.
- a well-known technique such as a binding may be used in providing the foot fixing instrument T.
- the constricted portion K may not be provided.
- the slideboard 7 is flat.
- Each of two outer ends 13 , 13 has first edges 14 a, 14 b made of carbon steel.
- An upper surface of the slide board 7 contacts with the blade 3 to be described later.
- the outer ends 13 , 13 have respective first side curves R (for example, a radius of the side curve of 8.8 m)
- the slide board 7 has a width smaller than that of the upper board 6 .
- the outer end 13 has the first side curve R, however, is not limited to this configuration.
- the outer end 13 may be formed linearly.
- the nose board 8 connects the left side end of the upper board 6 and the left side end of the slide board 7 .
- the tail board 9 connects the right side end of the upper board 6 and the right side end of the slide board 7 .
- the nose board 8 and the tail board 9 are each curved to protrude outwardly.
- the slide board 7 is formed flat, however, is not limited to this configuration.
- the slide board 7 may have a raised central part as a camber (not shown).
- the body part 2 is formed substantially symmetrical with respect to the longitudinal axis X, the across-the-width axis Y, and the vertical axis Z. This is advantageous in that the body part 2 is equally used even when either a right foot or a left foot is put forward.
- the body part 2 is formed as described above, however, is not limited to this configuration.
- the body part 2 may be formed asymmetrical.
- the nose board 8 and the tail board 9 are formed as described above, however, are not limited to this configuration.
- the nose board 8 and the tail board 9 may be formed vertically to the slide board 7 .
- the nose board 8 and the tail board 9 may be formed streamlined.
- the blade 3 is formed of a substantially X shape as viewed from above and includes an upper blade 3 a disposed on an upper side and a lower blade 3 b disposed on a lower side.
- the upper blade 3 a and the lower blade 3 b are formed of a substantially same shape and have each a C shape with an upper part thereof opened as viewed from above.
- the upper blade 3 a includes: on a front side (a toe side) of the left foot, a left foot front fixation portion 31 fixed to the lower surface of the upper board 6 ; a left foot front contact portion 32 positioned below the left foot front fixation portion 31 and contacted by the upper surface of the slide board 7 ; and a left foot front curved portion 33 connecting the left foot front fixation portion 31 and the left foot front contact portion 32 ; and, on a right foot rear side (on a heel side) of the right foot, a right foot rear fixation portion 34 fixed to the lower surface of the upper board 6 ; a right foot rear contact portion 35 positioned below the right foot rear fixation portion 34 and contacted by the upper surface of the slide board 7 ; and a right foot rear curved portion 36 connecting the right foot rear fixation portion 34 and the right foot rear contact portion 35 .
- the lower blade 3 b includes: on a rear side (a heel side) of the left foot, a left foot rear fixation portion 37 fixed to the upper surface of the upper board 6 ; a left foot rear contact portion 38 positioned below the left foot rear fixation portion 37 and contacted by the upper surface of the slide board 7 ; and a left foot rear curved portion 39 connecting the left foot rear fixation portion 37 and the left foot rear contact portion 38 ; and, on a front side (on a toe side) of the right foot, a right foot front fixation portion 40 fixed to the lower surface of the upper board 6 ; a right foot front contact portion 41 positioned below the right foot front fixation portion 40 and contacted by the upper surface of the slide board 7 ; and a right foot front curved portion 42 connecting the right foot front fixation portion 40 and the right foot front contact portion 41 .
- the left foot front fixation portion 31 , right foot rear fixation portion 34 , left foot rear fixation portion 37 , and right foot front fixation portion 40 may each be simply referred to as a fixation portion.
- the left foot front contact portion 32 , right foot rear contact portion 35 , left foot rear contact portion 38 , and right foot front contact portion 41 may each be simply referred to as a contact portion.
- the left foot front curved portion 33 , right foot rear curved portion 36 , left foot rear curved portion 39 , and right foot front curved portion 42 may each be simply referred to as a curved portion.
- the blade 3 includes a protruding portion 43 (including protruding portions 43 a to 43 d ) protruding more outward than the outer ends 13 , 13 of the slide board 7 .
- a second edge 45 b made of carbon steel is disposed at the outer end 44 b of the protruding portion 43 b.
- second edge 45 a, 45 c and 45 d are disposed at the protruding portions 43 a, 43 c and 43 d.
- a second side curve r formed on the outer end 44 ( 44 a to 44 d ) of the protruding portion 43 has a radius smaller (or a curvature larger) than that of a first side curve R formed on the outer ends 13 , 13 of the slide board 7 .
- the blade 3 includes a lapping portion L (La to Ld) having torsion starting from a central part C of the slide board 7 in respective longitudinal directions of the left foot front contact portion 32 , right foot rear contact portion 35 , left foot rear contact portion 38 , and right foot front contact portion 41 .
- the blade 3 comes in contact with the upper surface of the slide board 7 at the left foot front contact portion 32 , right foot rear contact portion 35 , left foot rear contact portion 38 , and right foot front contact portion 41 .
- the blade 3 can slide on the upper surface of the slide board 7 because it comes in contact only with the upper surface of the slide board 7 .
- the left foot front fixation portion 31 , right foot rear fixation portion 34 , left foot rear fixation portion 37 , right foot front fixation portion 40 are each fixed to the lower surface of the upper board 6 .
- the upper blade 3 a, lower blade 3 b, upper board 6 , and slide board 7 are disposed in this order from top to bottom and substantially in parallel to one another, at a central intersection part of the blade 3 .
- Respective cross sections of the upper blade 3 a and the lower blade 3 b are curved downwards. This facilitates a catch of a sliding surface by the blade 3 .
- the curved cross sections may not be necessarily provided.
- the upper blade 3 a and lower blade 3 b have respective torsion angles, ⁇ and ⁇ , so as to have substantially chevron shapes at respective lapping portions Ld and Lb (see FIG. 7 ). More specifically, the upper blade 3 a is warped at a prescribed angle from a horizontal axis h at a center of the upper blade 3 a in a counterclockwise direction. The lower blade 3 b is warped at a prescribed angle from a horizontal axis f at a center of the lower blade 3 b in a clockwise direction. The upper blade 3 a and lower blade 3 b have torsion angles also at the lapping portions La and Lc.
- the central part C has a torsion angle of 0°.
- the contact portions 35 , 41 (as well as the contact portions 32 , 38 ) each have a torsion angle of 0°. That is, the lapping portions La to Ld (see FIG. 7 ) are lapped so as to maximize the torsion angles ⁇ and ⁇ in substantially middle parts between the central part C and the contact portions 32 , 35 , 38 and 41 , respectively. Further, the torsion angle ⁇ of the upper blade 3 a is made larger than the torsion angle ⁇ of the lower blade 3 b.
- the upper blade 3 a has a longer lapping distance than the lower blade 3 b as the formed is positioned more upwards than the latter. It is desirable that the torsion angles ⁇ and ⁇ satisfy following inequalities, respectively: 0° ⁇ 45° and 0° ⁇ 45°
- the outer ends 44 b, 44 d at respective protruding portions 43 b, 43 d (as well as the outer ends 44 a, 44 c at respective contact portions 32 , 38 ) have equivalent relative heights at the contact portions 35 , 41 . That is, a distance from the second edge 45 b of the outer end 44 b to the sliding surface is equivalent to a distance from the second edge 45 d of the outer end 44 d to the sliding surface. This allows the player P to make a turn equally to right and left.
- the blade 3 is not limited to have a configuration as described in the first embodiment.
- the lapping portion L may not be provided, for example.
- the blade 3 may have a torsion angle at the contact portions 32 , 35 , 38 and 41 (not shown).
- the spring 4 is interposed between the lower surface of the upper board 6 and the upper surface of the upper blade 3 a, at the central part C of the body part 2 .
- Rubber M is disposed both an upper end and a lower end of the spring 4 so as to closely attach the spring 4 to the upper board 6 and the upper blade 3 a, respectively.
- the spring 4 in the first embodiment has a diameter of about 8 cm. The rubber M may not be used.
- the interposition of the spring 4 between the upper board 6 and the slide board 7 enhances a cushioning property therebetween, which allows a flexible response to a vertical load subjected to the upper board 6 and the slide board 7 .
- an elastic body interposed between the upper board 6 and the slide board 7 is the spring 4 , however, is not limited to this configuration.
- a well-known elastic body such as rubber (not shown) may be used.
- a size, a type, or the like of the elastic body may be selected according to a size and a material of the body part 2 , a weight and a playing style of the player P, or the like.
- one unit of the spring 4 is used, however, a plurality of springs may be used.
- a position of the spring 4 is not specifically limited.
- the support member 5 is a ball transfer with a spherical body installed therein and serves for a smooth slide of the blade 3 .
- the support member 5 used in the first embodiment is, for example, manufactured by FREEBEAR Corporation (FreeBare: C-85).
- two support members 5 are interposed, each at the central part C, between the lower surface of the upper blade 3 a and the upper surface of the lower blade 3 b and between the lower surface of the lower blade 3 b and the upper surface of the slide board 7 .
- a spherical body installed therein is formed to come in contact with the lower surface of the upper blade 3 a.
- a spherical body installed therein is formed to come in contact with the upper surface of the slide board 7 .
- the blade 3 slides according to a weight shift of the player P as described later. Therefore, the blade 3 slides smoothly by interposing the support members 5 at a part where the upper blade 3 a and the lower blade 3 b intersect and at a part where the lower blade 3 b and the slide board 7 intersect.
- an iron plate (not shown) is each disposed at a part where the spherical body installed in the support member 5 comes in contact with the lower surface of the upper blade 3 a and the upper surface of the slide board 7 .
- the support member 5 is a ball transfer, however, is not limited to this.
- the support member 5 may be a well-known means for a smooth slide of two plates being in contact with each other.
- first edge 14 and the second edge 45 are made of carbon steel, however, are not limited to this, and any other material may be used.
- the body part 2 is unitarily formed and is made of carbon fiber reinforced plastic (CFRP) having elasticity and high strength.
- CFRP carbon fiber reinforced plastic
- the body part 2 (or a carbon fiber reinforced plastic plate 51 ) is formed by laminating commercially available prepreg while changing orientation directions of fiber thereof, into a tubular mold, and allowing it to cure.
- the prepreg may be, for example, Besfight (registered trademark) (original yarn: HTA-12K, containing a 37% by mass of epoxy resin) manufactured by TOHO TENAX Co., Ltd.
- the slide board 7 is formed by adhering the polyethylene plate 52 to the lower surface of the carbon fiber reinforced plastic plate 51 with an epoxy resin-based adhesive.
- the first edges 14 a, 14 b made of chevron-shaped carbon steel are fitted to both ends of the polyethylene plate 52 and are attached by pressure to the carbon fiber reinforced plastic plate 51 and the polyethylene plate 52 .
- Material of which the body part 2 is made is not limited to the carbon fiber reinforced plastic, and may be, for example, glass fiber reinforced plastic (GFRP), acrylonitrile butadiene styrene (ABS), or the like. Further, the material is not limited to resin and may be wood, metal, or the like. The material is preferably light and excellent in durability, elasticity and strength.
- GFRP glass fiber reinforced plastic
- ABS acrylonitrile butadiene styrene
- the material is not limited to resin and may be wood, metal, or the like. The material is preferably light and excellent in durability, elasticity and strength.
- the body part 2 is unitarily formed, however, is not limited to this configuration.
- the body part 2 may be formed by joining separately-formed boards such as, for example, the upper board 6 , slide board 7 , nose board 8 , and tail board 9 .
- the body part 2 maybe formed in a so-called sandwich structure, in which a wooden board or foamed polyurethane is interposed between a pair of carbon fiber reinforced plastic plates 51 , 51 .
- both ends of the carbon fiber reinforced plastic plate 51 in which the fixing portions 31 , 34 , 37 , 40 and the protruding portion 43 are formed, are curved and are adhered to the lower surface of the upper board 6 .
- the upper blade 3 a and the lower blade 3 b are crossed at respective substantially central parts and are fixed to the lower surface of the upper board 6 at the left foot front fixation portion 31 and right foot rear fixation portion 34 and at the left foot rear fixation portion 37 and right foot front fixation portion 40 , respectively (see FIG. 8) .
- the second edge 45 ( 45 a to 45 d ) is disposed at the outer end 44 ( 44 a to 44 d ).
- the respective central parts of the upper blade 3 a and the lower blade 3 b are preferably lapped over the central part C of the body part 2 (see FIG. 7 ).
- material of which the blade 3 is made is carbon fiber reinforced plastic, however, is not limited to this.
- the material may be glass fiber reinforced plastic (GFRP), acrylonitrile butadiene styrene, (ABS), or the like.
- GFRP glass fiber reinforced plastic
- ABS acrylonitrile butadiene styrene
- the material is not limited to resin and may be wood, metal, or the like.
- the material is preferably light and excellent in durability, elasticity and strength.
- the material for the body part 2 may be different from that for the blade 3 .
- the support members 5 , 5 are interposed between the upper blade 3 a and lower blade 3 b and between the lower blade 3 b and the upper surface of the slide board 7 (see FIG. 2 ).
- An iron plate is each embedded at the part where the spherical body of the support member 5 comes in contact with the lower surface of the upper blade 3 a and the upper surface of the slide board 7 .
- Respective centers of the spring 4 and the support members 5 are preferably lapped over the central part C of the body part 2 .
- a configuration is provided, but is not limited to, that each spherical body of the support members 5 is brought into contact with the lower surface of the upper blade 3 a and the upper surface of the slide board 7 (see FIG. 9 ).
- the spring 4 is then interposed between the upper board 6 and the upper blade 3 a.
- an upper end of the spring 4 and the lower surface of the upper board 6 as well as a lower end of the spring 4 and the upper surface of the upper blade 3 a are fixed with an epoxy resin adhesive.
- the spring 4 may not necessarily be fixed but may only come in contact with the lower surface of the upper board 6 and the upper surface of the upper blade 3 a utilizing elasticity of the spring 4 .
- a configuration is provided, but is not limited to, that the blade 3 and the lower surface of the upper board 6 are fixed to each other with the epoxy resin adhesive. Any other adhesive or a fastening member such as a screw may be used for the fixation. Both an adhesive and a fastening member may be used for the fixation.
- the slide play apparatus 1 has a longitudinal length thereof of about 150 cm and a length between the lower surface of the slide board 7 and the upper surface of the upper board 6 of about 20 cm.
- the body part 2 has a thickness of about 1.5 cm.
- the upper board 6 has a maximum width of about 35 cm and a width at the constricted portion K of about 25 cm.
- the slide board 7 has a width of 22 cm.
- the first side curve R of the slide board 7 has a radius of about 8.8 m (see FIG. 4 ), and the second side curve r of the blade 3 has radius of about 8.2 m.
- a configuration is provided, but is not limited to, that the first side curve R and the second side curve r are formed of circular arcs.
- the curves may be formed of quadratic curves of the like.
- the slide play apparatus 1 has foot fixing instruments T, T fixed to the upper board 6 , into which feet of the player P are fixed, and, when the player P goes on to a slope (sliding surface), slides on the sliding surface with the player P's own weight.
- foot fixing instruments T, T fixed to the upper board 6 into which feet of the player P are fixed, and, when the player P goes on to a slope (sliding surface), slides on the sliding surface with the player P's own weight.
- a left foot of the player is positioned frontward in a sliding direction.
- a term “compressed” means that a distance between the upper board 6 and the slide board 7 (between the fixing portion and the contact portion) becomes smaller than that in a resting state, due to a weight shift of the player P.
- the resting state is referred to as a state in which the player P's weight acts on the slide board 7 in a vertical direction.
- a term “extended” means that the distance between the upper board 6 and the slide board 7 (between the fixing portion and the contact portion) becomes smaller than that in the resting state.
- the player P can slide straight by acting his/her weight on the slide board 7 in the vertical direction. That is, if the player P's weight acts on the slide board 7 in the vertical direction, the second edges 45 a, 45 c disposed on the blade 3 do not come in contact with the sliding surface S. This allows a substantially whole area of the lower surface of the slide board 7 to come in contact with the sliding surface, thus enabling the player P to slide straight.
- the slide play apparatus 1 makes a turn when the player P shifts his/her weight to bring the first edge 14 or second edge 45 into contact with the sliding surface S (that is, make the first edge 14 or second edge 45 sink into the sliding surface S).
- the distance between the left foot front fixation portion 31 and the left foot front contact portion 32 is compressed, and, at the same time, the distance between the right foot rear fixation portion 34 and the right foot rear contact portion 35 is extended because of reaction force of the compression (see FIG. 6 ).
- the protruding portion 43 a slides along with the weight shift of the player P, because the left foot front contact portion 32 and the right foot rear contact portion 35 are only in contact with the upper surface of the slide board 7 , though the left foot front fixation portion 31 and the right foot rear fixation portion 34 of the upper blade 3 a are fixed to the lower surface of the upper board 6 .
- the upper blade 3 a, lower blade 3 b, and the support member 5 , 5 slide toward the rear side (heel side). That is, as shown in FIG. 9 , respective centers of the upper blade 3 a, the lower blade 3 b, and the support members 5 , 5 are substantially lapped over the central part C in resting state. However, when the weight shift of the player P to the left foot front side (tiptoe side), the upper blade 3 a, the lower blade 3 b and the support member 5 , 5 are pushed to slide toward the heel side.
- the second edge 45 a disposed on the protruding portion 43 a, the first edge 14 a disposed on the slide board 7 , and the second edge 45 d disposed on the protruding portion 43 d catch the sliding surface. Further, the player P can make a turn sharply, because the protruding portions 43 a, 43 d having the second edges 45 a, 45 d are each provided with a second side curve r (see FIG. 7 ) having a radius smaller than that of the first side curve R of the slide board 7 .
- the protruding portions 43 a, 43 d are pushed toward the sliding surface S along with the weight shift of the player P. This allows the second edges 45 a, 45 d to keep on contacting with the sliding surface S without bouncing back from the sliding surface S while the player P is making a turn.
- the player P can make a sharp turn and good braking, if the player P makes a turn in a direction of arrow 62 while shifting the weight (applying a large load) to the right foot front side (tiptoe side). This is because the edge 45 d disposed on the protruding portion 43 d further catches the sliding surface S.
- the player P can also make a turn to the left by shifting the weight to the right foot front side (tiptoe side) or the right foot rear side (heel side).
- the player P can make various types of turns because the player P can use the first edge 14 or the second edge 45 accordingly by adjusting the weight shift.
- the slide play apparatus 1 has a configuration in which the body part 2 is formed of a substantial cylinder, and the slide board 7 and the upper board 6 positioned above the slide board 7 are connected with the nose board 8 and the tail board 9 .
- the nose board 8 and the tail board 9 serves as cushions, to thereby cushion an impact exerted on the feet of the player P. Since the impact exerted on the feet of the player P is cushioned, the player P can have sliding fun and feeling different from those obtained from conventional apparatuses.
- the slide play apparatus 1 has the outer end 13 of the slide board 7 , having the first side curve R. This allows a turn to be made smoothly because the first edge 14 catches the sliding surface S along the first side curve R.
- the blade 3 has the protruding portion 43 with the second edge 45 disposed thereon.
- the second edge 45 is positioned further outside than the first edge 14 disposed on the outer end 13 of the slide board 7 .
- the blade 3 slides in a direction of the weight shift, and the second edge 45 disposed on the protruding portion 43 catches the sliding surface S.
- the player P can make a sharper turn because the second side curve r formed on the outer end 44 of the protruding portion 43 has a curvature larger than that of the first side curve R of the slide board 7 .
- the slide play apparatus 1 includes the upper blade 3 a and the lower blade 3 b disposed crossly with respect the longitudinal axis X of the slide board 7 to have a substantially X shape as viewed from above. If the player P puts his/her weight, for example, on the left foot front side (tiptoe side), the distance between the left foot front fixation portion 31 and the left foot front contact portion 32 is compressed, and, at the same time, the distance between the right foot rear fixation portion 34 and the right foot rear contact portion 35 is extended because of reaction force of the compression. This facilitates a smooth weight shift of the player P. Further, the curved portion of the blade 3 also enhances a cushioning property.
- the slide play apparatus 1 has the support member 5 . This allows friction caused between the slide board 7 and the blade 3 which are in contact with each other to be reduced, thus enabling a smooth slide of the blade 3 .
- the slide play apparatus 1 has the spring 4 interposed between the upper board 6 and the slide board 7 . This enhances a cushioning property therebetween, which allows a flexible response to a vertical load subjected to the upper board 6 and the slide board 7 .
- the slide board 7 has a width smaller than that of the upper board 6 . This allows frictional resistance of the slide board 7 to be reduced and a possible range of the weight shift to be narrowed, thus enabling a turn to be made easily.
- a slide play apparatus 71 includes: a body part 72 formed of a substantial cylinder; a blade 73 ; a spring 74 interposed therein at a central part thereof; and a support member (not shown) interposed between the blade 73 and a slide board 82 .
- the blade 3 in the first embodiment is formed by combining two boards.
- the blade 73 in the second embodiment includes a central part W, and a foot portion 76 ( 76 a to 76 d ) extending from the central part W to have a substantially X shape as viewed from above.
- the blade 73 has a curved portion 78 ( 78 a to 78 d ) formed by bending the foot portion 76 .
- An end 77 ( 77 a to 77 d ) of the foot portion 76 is fixed to a lower surface of the upper board 79 .
- the blade 73 has a protruding portion 85 ( 85 a to 85 d ) protruding more outward than outer ends (shown in dotted lines) of the slide board 82 .
- a second side curve r is formed on an outer end 86 ( 86 a to 86 d ) of the protruding portion 85 and has a radius smaller than that of a first side curve R formed on the outer end 85 of the slide board 82 .
- a second edge 84 ( 84 a to 84 d ) is disposed on the outer end 86 ( 86 a to 86 d ) of the protruding portion 85 .
- the foot portions 76 b, 76 d of the blade 73 are formed of a substantial chevron when cut along the line K-K in FIG. 17( b ). As shown in FIG. 18( b ), when the foot portion 76 b and the foot portion 76 d come in contact with an upper surface of the slide board 82 , the foot portions 76 b, 76 d are horizontally positioned.
- a manufacture method and operations in the second embodiment are substantially same as those in the first embodiment, and description thereof is omitted herefrom.
- the blade 73 has the foot portion 76 extending from the central part W to have a substantially X shape as viewed from above. That is, the blade 73 is formed from a single board. This prevents the upper blade 3 a and the lower blade 3 b from having different distances therebetween, unlike in the first embodiment. Therefore, it becomes easy to lap the foot portions 76 a to 76 d of the blade 73 .
- the feet of the player P are fixed at right angles with respect to a longitudinal direction of the slide play apparatuses 1 , 71 .
- the present invention is not limited to this configuration.
- one of the feet of the player P is fixed to one of a pair of the slide play apparatuses 90 , 90 , and the other to the other.
- the feet of the player P are fixed in parallel with respect to a longitudinal direction of the slide play 1 .
- the slide play apparatus 90 includes: a body part 93 including an upper board 91 and a slide board 92 ; a blade 94 ; a spring 95 ; and a support member (not shown).
- Each width of the upper board 91 and the slide board 92 is formed to be smaller than a width of the player P.
- a length in the longitudinal direction of the slide play apparatus 90 is formed shorter than that of the slide play apparatus 1 , and is about 100 cm.
- Each foot of the player P is fixed substantially above the spring 95 .
- a manufacture method and operations in the third embodiment are substantially same as those in the first embodiment, and description thereof is omitted herefrom.
- the slide play apparatus 90 has a configuration as described above, however, is not limited to this.
- the length, width, or the like of the slide play apparatus 90 may be determined according to a height and a playing style of the player P.
- a slide play apparatus 110 is different from the embodiments described above in structures of an upper board 116 and a support member 130 .
- the upper board 116 of the slide play apparatus 110 has recessed portions 120 , 120 substantially equally spaced from a central part C.
- the recessed portion 120 is formed by putting a dent in a portion of the upper board 116 toward the slide board 117 .
- a bottom face of the recessed portion 120 is flat, to which the foot of the player P is fixed with a foot fixing instrument T.
- both ends of the upper board 116 may be curved downward from the central part C thereof.
- the upper board 116 has the central part C is positioned higher than the bottom face of the recessed portion 120 , however, is not limited to this configuration.
- the central part C may be formed as high as the bottom face of the recessed portion 120 .
- the recessed portion 120 may have any other shape.
- a support member 130 in the fourth embodiment penetrates a through hole 131 formed in the lower blade 113 b and is disposed between the slide board 117 and the upper blade 113 a.
- the support member 130 includes: a rotating body 132 disposed to be in contact with above and below; a rotational axis 133 inserted into the rotating body 132 ; a T-shaped support metal 134 into which the rotational axis 133 is inserted; and a joint 135 jointing the T-shaped support metal 134 and the lower blade 113 b.
- the rotating body 132 includes a first rotating body 132 a positioned below and a second. rotating body 132 b positioned above, which are spherical bodies having same diameters and made of hard rubber.
- a lower end of the first rotating body 132 a is in contact with the slide board 117 , and an upper end thereof, with the second rotating body 132 b.
- a lower end of the second rotating body 132 b is in contact with the first rotating body 132 a, and an upper end thereof, with the upper blade 113 a.
- the rotational axis 133 includes a first rotational axis 133 a and a second rotational axis 133 b, which are inserted into respective centers of the first rotating body 132 a and the second rotating body 132 b.
- Axis directions of the first rotational axis 133 a and the second rotational axis 133 b are parallel to a longitudinal direction of the slide play apparatus 110 and are horizontal. Both ends of the rotational axis 133 are provided with grooves, on which respective nuts 133 c are screwed for fixation.
- T-shaped support metal 134 is configured by a first T-shaped support metal 134 a and a second T-shaped support metal 134 b in a pair.
- the T-shaped support metal 134 pivotally supports the rotating body 132 and is jointed to the lower blade 113 b via the joint 135 .
- the T-shaped support metal 134 includes: a long hole 136 ; a base portion 137 on which the long hole 136 is created; and an outrigger 138 vertically formed from the base portion 137 .
- Two long holes 136 are created on the base portion 137 and have each an oval cross section elongated upward and downward. The long hole allows the rotational axis 133 to be inserted thereinto and to move up and down therein.
- a diameter of the rotational axis 133 is formed smaller than a width of the long hole, 136 .
- the nuts 133 c disposed at both ends of the rotational axis 133 are fixed at respective positions spaced apart from the base portion 137 .
- the outrigger 138 extends parallel to the longitudinal direction of the slide play apparatus 110 and is jointed to the lower blade 113 b via the joint 135 .
- the joint 135 joints the T-shaped support metal 134 and the lower blade 113 b.
- the joint 135 includes an absorber 140 with a communication hole for communicating the outrigger 138 and the lower blade 113 b, which are fixed with a bolt 142 and a nut 143 via a washer 141 .
- the absorber 140 is formed of a cylinder having a hollow portion into which the bolt 142 is inserted.
- the absorber 140 is constricted in a middle portion thereof. That is, both ends of the absorber 140 are formed thicker than the middle portion.
- the absorber 140 may be, for example, a well-known rubber bush.
- the absorber 140 is used for absorbing load acting on the support member 130 and allowing a travel thereof in the longitudinal direction. Further, the absorber 140 flexibly responds to a load subjected thereto, because both ends of the absorber 140 are formed thicker than the middle portion.
- the support member 130 With the support member 130 , if the player P shifts his/her weight in a front/rear direction (on a tiptoe/heel side), the first rotating body 132 a and the second rotating body 132 b rotate about the rotational axis 133 while coming in contact with above and below. This causes a smooth slide of the upper blade 113 a and the lower blade 113 b in a width direction thereof.
- the support member 130 with the absorber 140 inserted thereinto absorbs load acting thereon and allows a travel of the upper blade 113 a and the lower blade 113 b in the longitudinal direction. This makes it possible to make a sharp turn, because, similarly to the slide play apparatus 1 in the first embodiment, the player P's weight shift enables the second edges of the upper blade 113 a and the lower blade 113 b to catch a sliding surface.
- the rotational axis 133 is fixed to the T-shaped support metal 134 .
- the first rotating body 132 a and the second rotating body 132 b gall to create a gap therebetween, rotating without any contact with each other.
- the long hole 136 is formed to allow the rotational axis 133 to travel up and down therein. This makes it possible for the first rotating body 132 a and the second rotating body 132 b to be constantly in contact with each other, when a load of the player P acts on the upper board 116 , thus preventing rotation without contact.
- the support member 130 used has a configuration as described above, however, other configuration is also available.
- the rotating body 132 used is spherical, however, it may be oval spherical.
- the T-shaped support metal 134 used is a pair of metal members, however, may be integrally formed.
- a shape and a material of the absorber 140 may be determined according to a playing style of the player P.
- a cushion may be provided in the long hole 136 in accordance with an inner shape thereof so as to prevent the long hole 136 and the rotational axis 133 from galling.
- the slide play apparatus 1 is used in a substantially same way as a snowboard.
- the slide play apparatus 1 may be used in a same way as a sled by putting a box-like body suited for carrying something or someone on the upper board 6 of the slide play apparatus 1 . This case is described with reference to FIG. 16 .
- a player rides in a box-like body (not shown) disposed on the upper board 6 .
- the player can operate the slide play apparatus 1 by shifting his/her weight with substantially same operations as those in the first embodiment.
- the slide play apparatus with such a box-like body put an object (including a person) therein may be pulled from a side of the nose board 8 (see FIG. 1 ).
- a load of the object put in the box-like body acts on the blade 3 according to a pulling direction or a change in the sliding surface S.
- the slide play apparatus 1 thus slides smoothly following the pulling direction, because the second edge 45 a acting in the pulling direction catches the sliding surface S.
- the slide play apparatus 1 has the protruding portion 43 , which can prevent an overturn thereof due to an abrupt operation.
- the slide play apparatus may only include the body part 2 without including the blade 3 , spring 4 , and support member 5 , for example (see FIG. 2( b )). This configuration minimizes components of the slide play apparatus to make the slide play apparatus lighter and to be applied to a play containing aerial actions.
- slide play apparatus in the first embodiment, description is made assuming that the slide play apparatus according to the present invention slides on a snow surface, however, is not limited to this configuration.
- the slide play apparatus may slide on a surface of, for example, lawn, sand or water.
- the blade 3 is used for the slide play apparatus 1 , however, is not limited to this configuration.
- the blade 3 may be used for other structure.
Landscapes
- Toys (AREA)
Abstract
To provide a slide play apparatus for sliding not only on the surface of snow but also on the surfaces of lawn and sand. The apparatus is constructed such that an impact from a sliding surface to a player can be cushioned and that sliding fun different from those obtained from conventional slide play apparatuses can be provided to the player.
[Means for Solving the Problems]
In the slide play apparatus 1, a body part 2 has a substantially cylindrical shape, and a slide board 7 and an upper board 6 positioned over the slide board 7 are connected to each other by a nose plate 8 and a tail plate 9. Therefore, the nose plate 8 and the tail plate 9 function as cushions to cushion an impact applied to the feet of the player P. Since the impact applied to the feet of the player P is cushioned, the player can have sliding fun and feeling different from those of the conventional apparatuses.
Description
- The present invention relates to a slide play apparatus for sliding on a surface of snow, lawn, or the like.
- Slide play apparatuses for sliding on a slope with a player's own weight have been known such as a snowboard for sliding on a snow surface. A snowboard which has been used according to previously existing technology is manufactured from a single board formed of a substantially oval as viewed from above. A lower surface of the board is used as a sliding surface, and an upper surface, as a boarding surface on which a player rides. The player can make a turn to right or left by transmitting his/her weight shift onto the board (see Japanese Published Patent Application Publication No. 2004-160095).
- Most snowboards are, however, manufactured from a single board and are formed of a substantially oval as viewed from above. Thus, sliding fun and feeling that a player on such snowboards receives from a snow surface is not so much different from one another. Further, it is only a single board that is interposed between the snow surface and the feet of a player, so that an impact which the player receives from the snow surface is extremely large.
- The present invention is made in an attempt to solve the problems and to provide: a slide play apparatus for sliding on a slope not only a surface of snow but also a surface of lawn, sand, or the like, which can reduce a physical load subjected to the player and obtain sliding fun different from that obtained from the apparatuses according to previously existing technology; and a blade suited to cushioning the impact.
- There is provided a slide play apparatus which includes: a slide board having a first edge at an outer end and sliding on a slope; an upper board positioned above the slide board; a nose board connecting one end of the slide board to one end of the upper board; and a tail board connecting the other end of the slide board to the other end of the upper board, and which is formed of a substantial cylinder.
- With the invention described above, the slide play apparatus is formed of a substantial cylinder, and the slide board and the upper board positioned above the slide board are connected with the nose board and the tail board. Therefore, the nose board and the tail board function as cushions to cushion an impact applied to the feet of a player. Since the impact applied to the feet of the player is cushioned, the player can have sliding fun and feeling different from that obtained from the apparatuses according to previously existing technology.
- In the present invention, the outer end may have a first side curve.
- With the invention described above, the outer end has a first side curve. Therefore, a first edge disposed at the outer end and having a curve catches the sliding surface, which enables a turn to be made smoothly.
- In the present invention, a blade includes; a protruding portion protruding more outward than the outer end of the slide board; a second side curve formed on the outer end of the protruding portion and having a curvature larger than that of the first side curve; and a second edge disposed on the outer end of the protruding portion, and the blade may come in contact with the upper surface of the slide board.
- With the invention described above, the blade has the protruding portion having the second edge positioned more outward than the first edge disposed on the outer end of the slide board, and the blade comes in contact with the upper surface of the slide board. Therefore, the slide board and the blade tilt when the player shifts his/her weight, which allows the second edge disposed on the protruding portion to catch the sliding surface. The second side curve having the curvature larger than that of the first side curve of the slide board is disposed on the outer end of the protruding portion, which allows a turn to be made sharply. The player can make various types of turns because the player can use the first edge or the second edge as he/she likes by adjusting the weight shift.
- The blade in the present invention means a board interposed between the slide board and the upper board, functioning as a cushion for absorbing an impact, and guiding a turn by contacting with the sliding surface.
- In the present invention, two blades are disposed crossly with respect the longitudinal axis X of the slide board to have a substantially X shape as viewed from above. Each blade may have a contact portion coming in contact with the upper surface of the slide board, curved portions disposed on a nose board side and on a tail board side, and a fixing portion fixed to the lower surface of the upper board.
- Herein, description of the present invention is made assuming that a left foot of a player is positioned frontward in a sliding direction.
- With the invention described above, the two blades each having the curved portions disposed on the nose board side and on the tail board side are disposed crossly with respect the longitudinal axis X of the slide board to have a substantially X shape as viewed from above. That is, one blade is disposed at a part covering from a left foot tiptoe through a right foot heel. The other blade is disposed a part covering from a left foot heel through a right foot tiptoe. Therefore, if the player shifts the weight to a left foot tiptoe side, a distance between the fixing portion and the contact portion on the left foot tiptoe side is compressed, and, at the same time, because of reaction force, a distance between the fixing portion and the contact portion on a right foot heel side is extended. This facilitates a smooth weight shift of the player due to elasticity of the blade.
- Further, the curved portion of the blade functions as a cushion, which cushions an impact applied to the feet of the player.
- In the present invention, a support member for reducing friction between the slide board and the blade and between the two blades may be disposed at respective portions at which the slide board and the blade, and the two blades are crossed.
- With the invention described above, friction caused when the slide board and the blade, and the two blades each come in contact with each other can be reduced. This enables a smooth slide of the blade.
- In the present invention, an elastic body may be interposed between the slide board and the upper board.
- With the invention described above, the interposition of the elastic body between the slide board and the upper board enhances a cushioning property therebetween, which allows a flexible response to a vertical load subjected to the upper board and the slide board.
- In the present invention, a width of the sliding surface is smaller than that of the boarding surface.
- With the invention described above, the frictional resistance of the sliding surface is reduced, and a sliding speed is increased. Additionally, a possible range of the weight shift is narrowed, thus enabling a turn to be made easily.
- In the present invention, the upper board may have a recessed portion which is depressed toward the slide board.
- With the invention described above, a height of the foot of the player can be lowered, thus enabling the player to get on and off the slide play apparatus without difficulty. Further, a distance between the foot of the player and the slide board is reduced. This makes it possible to easily transmit the weight shift of the player onto the slide board, thus enabling a further smooth slide.
- In the present invention, the two blades are disposed crossly with respect the longitudinal axis X of the slide board between the slide board and the upper board disposed thereabove to have a substantially X shape as viewed from above. Each blade has the contact portion coming in contact with the upper surface of the slide board, the curved portions disposed on both ends of the contact portion, and the fixing portion fixing both ends of the blade to the lower surface of the upper board. Each blade further has a protruding portion protruding more outward than the outer end of the slide board.
- With the invention described above, the blade with the curved portions provided therein is interposed between the slide board and the upper board. Therefore, an impact applied to the slide board and the upper board can be reduced.
- In the present invention, the slide play apparatus can cushion the impact applied to the feet of the player and can give the player sliding fun and feeling different from that obtained from the slide play apparatuses according to previously existing technology.
-
FIG. 1 A perspective view showing a slide play apparatus according to a first embodiment. -
FIG. 2 Views each showing the slide play apparatus according to the first embodiment.FIG. 2( a) is a side view showing the slide play apparatus.FIG. 2( b) is a side view showing a body part thereof.FIG. 2( c) is a cross sectional view showing the apparatus when cut along the line F-F inFIG. 2( b).FIG. 2( d) is an enlarged view of the part G inFIG. 2( c), -
FIG. 3 A plan view showing the slide play apparatus according to the first embodiment. -
FIG. 4 A rear view showing the slide play apparatus according to the first embodiment. -
FIG. 5 A front view showing the slide play apparatus as viewed from a nose board according to the first embodiment. -
FIG. 6 Views each showing a blade according to the first embodiment.FIG. 6( a) is a perspective view.FIG. 6( b) is a cross sectional view when cut along the line H-H inFIG. 6( a).FIG. 6( c) is an enlarged view of the part I inFIG. 6( b). -
FIG. 7 A cross sectional view when cut along the line D-D inFIG. 2 . -
FIG. 8 A cross sectional view when cut along the line E-E inFIG. 2 . -
FIG. 9 A cross sectional view when cut along the line A-A inFIG. 4 . -
FIG. 10 A cross sectional view when cut along the line B-B inFIG. 4 . -
FIG. 11 A cross sectional view when cut along the line C-C inFIG. 4 . -
FIG. 12 A front view showing the slide play apparatus in a resting state according to the first embodiment, in which a weight of a player acts thereon in a vertical direction. -
FIG. 13 A view showing the slide play apparatus in an operating state according to the first embodiment, in which a player shifts his/her weight to his/her left foot along a sliding direction. -
FIG. 14 Views each showing the slide play apparatus in an operating state according to the first embodiment.FIG. 14( a) is a front view showing the state in which the player shifts his/her weight to a left foot front side (tiptoe side).FIG. 14( b) is a front view showing the state in which the player shifts his/her weight to a left foot rear side (heel side). -
FIG. 15 A cross sectional view at a lapping portion La showing the slide play apparatus in an operating state according to the first embodiment, in which the player directs toward a central part C. -
FIG. 16 A perspective view showing the slide play apparatus in an operating state according to the first embodiment, in which the player makes a turn. -
FIG. 17 Views each showing a second embodiment.FIG. 17( a) is a perspective view showing a slide play apparatus.FIG. 17( b) is a cross sectional view when cut along the line J-J inFIG. 17( a). -
FIG. 18 Views each showing the second embodiment.FIG. 18( a) is a cross sectional view when cut along the line K-K inFIG. 17( a).FIG. 18( b) is a cross sectional view when cut along the line L-L inFIG. 17( a). -
FIG. 19 A perspective view showing a third embodiment. -
FIG. 20 Views each showing a fourth embodiment.FIG. 19( a) is a perspective view showing a slide play apparatus.FIG. 19( b) is a cross sectional view when cut along the line V-V inFIG. 19( a). FIG.(c) is a sectional side view showing a body part. -
FIG. 21 Views each showing a support member according to the fourth embodiment.FIG. 21( a) is a perspective view.FIG. 21( b) is a side view. -
FIG. 22 An enlarged side view showing a joint according to the fourth embodiment. - Embodiments of the present invention are described in detail hereinafter with reference to related drawings. In the description, the same reference numerals are assigned to the same components, and the overlapped description thereof is omitted herefrom. Arrows in
FIG. 1 indicating up, down, right, left, front, and rear are applicable to the description in whole, if not otherwise specified. - As shown in
FIG. 1 andFIG. 2 , aslide play apparatus 1 in the first embodiment includes: abody part 2 formed of a substantially elongated cylinder; ablade 3 including anupper blade 3 a and alower blade 3 b; aspring 4 inserted between anupper board 6 and aslide board 7 of thebody part 2; andsupport members 5, 5 (seeFIG. 2 ) disposed at a part (a central part C) at which theupper blade 3 a and thelower blade 3 b intersect. - As shown in
FIG. 1 andFIG. 2 , thebody part 2 includes: anupper board 6 on which a player P rides; aslide board 7 for contacting with a sliding surface; anose board 8 for connecting a left side end of theupper board 6 and a left side end of theslide board 7; and atail board 9 for connecting a right side end of theupper board 6 and a right side end of theslide board 7. As shown inFIG. 2( a) andFIG. 2( b), thebody part 2 is formed of a substantially elongated circle as viewed from a lateral side and is substantially symmetrical with respect to a vertical axis Z. - As shown in
FIG. 3 , theupper board 6 is formed of a substantially elongated circle having a constricted portion K in the middle thereof as viewed from above and is substantially symmetrical with respect to a longitudinal axis X and an across-the-width axis Y. - An upper surface of the
upper board 6 includes boardingportions 11 on which the player P rides. Theblade 3 to be described later is fixed to a lower surface of theupper board 6. A foot fixing instruments T (seeFIG. 1 ) for fixing a foot of the player P is provided on an upper surface of theboarding portion 11. A position of the foot fixing instrument T may be changed according to a height, a playing style, or the like of the player P. A well-known technique such as a binding may be used in providing the foot fixing instrument T. The constricted portion K may not be provided. - As shown in
FIG. 2( c),FIG. 2( d) andFIG. 4 , theslideboard 7 is flat. Each of twoouter ends slide board 7 contacts with theblade 3 to be described later. As shown inFIG. 4 , the outer ends 13, 13 have respective first side curves R (for example, a radius of the side curve of 8.8 m) As shown inFIG. 5 , theslide board 7 has a width smaller than that of theupper board 6. In the first embodiment, theouter end 13 has the first side curve R, however, is not limited to this configuration. Theouter end 13 may be formed linearly. - As shown in
FIG. 1 andFIG. 2 , thenose board 8 connects the left side end of theupper board 6 and the left side end of theslide board 7. Thetail board 9 connects the right side end of theupper board 6 and the right side end of theslide board 7. Thenose board 8 and thetail board 9 are each curved to protrude outwardly. - In the first embodiment, the
slide board 7 is formed flat, however, is not limited to this configuration. Theslide board 7 may have a raised central part as a camber (not shown). - In the first embodiment, the
body part 2 is formed substantially symmetrical with respect to the longitudinal axis X, the across-the-width axis Y, and the vertical axis Z. This is advantageous in that thebody part 2 is equally used even when either a right foot or a left foot is put forward. In the first embodiment, thebody part 2 is formed as described above, however, is not limited to this configuration. Thebody part 2 may be formed asymmetrical. - In the first embodiment, the
nose board 8 and thetail board 9 are formed as described above, however, are not limited to this configuration. Thenose board 8 and thetail board 9 may be formed vertically to theslide board 7. Thenose board 8 and thetail board 9 may be formed streamlined. - As shown in
FIG. 6 , theblade 3 is formed of a substantially X shape as viewed from above and includes anupper blade 3 a disposed on an upper side and alower blade 3 b disposed on a lower side. Theupper blade 3 a and thelower blade 3 b are formed of a substantially same shape and have each a C shape with an upper part thereof opened as viewed from above. - Description hereinafter assumes that a left foot of the player P is put on a left side on the
upper board 6. - As shown in
FIG. 1 andFIG. 6 , theupper blade 3 a includes: on a front side (a toe side) of the left foot, a left footfront fixation portion 31 fixed to the lower surface of theupper board 6; a left footfront contact portion 32 positioned below the left footfront fixation portion 31 and contacted by the upper surface of theslide board 7; and a left foot frontcurved portion 33 connecting the left footfront fixation portion 31 and the left footfront contact portion 32; and, on a right foot rear side (on a heel side) of the right foot, a right footrear fixation portion 34 fixed to the lower surface of theupper board 6; a right footrear contact portion 35 positioned below the right footrear fixation portion 34 and contacted by the upper surface of theslide board 7; and a right foot rearcurved portion 36 connecting the right footrear fixation portion 34 and the right footrear contact portion 35. - As shown in
FIG. 1 andFIG. 6 , thelower blade 3 b includes: on a rear side (a heel side) of the left foot, a left footrear fixation portion 37 fixed to the upper surface of theupper board 6; a left footrear contact portion 38 positioned below the left footrear fixation portion 37 and contacted by the upper surface of theslide board 7; and a left foot rearcurved portion 39 connecting the left footrear fixation portion 37 and the left footrear contact portion 38; and, on a front side (on a toe side) of the right foot, a right footfront fixation portion 40 fixed to the lower surface of theupper board 6; a right footfront contact portion 41 positioned below the right footfront fixation portion 40 and contacted by the upper surface of theslide board 7; and a right foot front curvedportion 42 connecting the right footfront fixation portion 40 and the right footfront contact portion 41. - The left foot
front fixation portion 31, right footrear fixation portion 34, left footrear fixation portion 37, and right footfront fixation portion 40 may each be simply referred to as a fixation portion. The left footfront contact portion 32, right footrear contact portion 35, left footrear contact portion 38, and right footfront contact portion 41 may each be simply referred to as a contact portion. The left foot frontcurved portion 33, right foot rearcurved portion 36, left foot rearcurved portion 39, and right foot front curvedportion 42 may each be simply referred to as a curved portion. - As shown in
FIG. 4 andFIG. 7 , theblade 3 includes a protruding portion 43 (including protrudingportions 43 a to 43 d) protruding more outward than the outer ends 13, 13 of theslide board 7. As shown inFIG. 6( b) andFIG. 6( c), asecond edge 45 b made of carbon steel is disposed at theouter end 44 b of the protrudingportion 43 b. Similarly,second edge portions FIG. 7 , a second side curve r formed on the outer end 44 (44 a to 44 d) of the protrudingportion 43 has a radius smaller (or a curvature larger) than that of a first side curve R formed on the outer ends 13, 13 of theslide board 7. As shown inFIG. 7 , theblade 3 includes a lapping portion L (La to Ld) having torsion starting from a central part C of theslide board 7 in respective longitudinal directions of the left footfront contact portion 32, right footrear contact portion 35, left footrear contact portion 38, and right footfront contact portion 41. - As shown in
FIG. 1 andFIG. 6( a), theblade 3 comes in contact with the upper surface of theslide board 7 at the left footfront contact portion 32, right footrear contact portion 35, left footrear contact portion 38, and right footfront contact portion 41. Theblade 3 can slide on the upper surface of theslide board 7 because it comes in contact only with the upper surface of theslide board 7. - As shown in
FIG. 8 , the left footfront fixation portion 31, right footrear fixation portion 34, left footrear fixation portion 37, right footfront fixation portion 40 are each fixed to the lower surface of theupper board 6. - As shown in
FIG. 9 , theupper blade 3 a,lower blade 3 b,upper board 6, and slideboard 7 are disposed in this order from top to bottom and substantially in parallel to one another, at a central intersection part of theblade 3. Respective cross sections of theupper blade 3 a and thelower blade 3 b are curved downwards. This facilitates a catch of a sliding surface by theblade 3. However, the curved cross sections may not be necessarily provided. - As shown in
FIG. 10 , theupper blade 3 a andlower blade 3 b have respective torsion angles, α and β, so as to have substantially chevron shapes at respective lapping portions Ld and Lb (seeFIG. 7 ). More specifically, theupper blade 3 a is warped at a prescribed angle from a horizontal axis h at a center of theupper blade 3 a in a counterclockwise direction. Thelower blade 3 b is warped at a prescribed angle from a horizontal axis f at a center of thelower blade 3 b in a clockwise direction. Theupper blade 3 a andlower blade 3 b have torsion angles also at the lapping portions La and Lc. - As shown in
FIG. 9 , the central part C has a torsion angle of 0°. As shown inFIG. 11 , thecontact portions 35, 41 (as well as thecontact portions 32, 38) each have a torsion angle of 0°. That is, the lapping portions La to Ld (seeFIG. 7 ) are lapped so as to maximize the torsion angles α and β in substantially middle parts between the central part C and thecontact portions upper blade 3 a is made larger than the torsion angle β of thelower blade 3 b. This is because theupper blade 3 a has a longer lapping distance than thelower blade 3 b as the formed is positioned more upwards than the latter. It is desirable that the torsion angles α and β satisfy following inequalities, respectively: 0°<α<45° and 0°<β<45° - As shown in
FIG. 11 , the outer ends 44 b, 44 d at respective protrudingportions respective contact portions 32, 38) have equivalent relative heights at thecontact portions second edge 45 b of theouter end 44 b to the sliding surface is equivalent to a distance from thesecond edge 45 d of theouter end 44 d to the sliding surface. This allows the player P to make a turn equally to right and left. - The
blade 3 is not limited to have a configuration as described in the first embodiment. The lapping portion L may not be provided, for example. Theblade 3 may have a torsion angle at thecontact portions - As shown in
FIG. 9 , thespring 4 is interposed between the lower surface of theupper board 6 and the upper surface of theupper blade 3 a, at the central part C of thebody part 2. Rubber M is disposed both an upper end and a lower end of thespring 4 so as to closely attach thespring 4 to theupper board 6 and theupper blade 3 a, respectively. Thespring 4 in the first embodiment has a diameter of about 8 cm. The rubber M may not be used. The interposition of thespring 4 between theupper board 6 and theslide board 7 enhances a cushioning property therebetween, which allows a flexible response to a vertical load subjected to theupper board 6 and theslide board 7. - In the first embodiment, an elastic body interposed between the
upper board 6 and theslide board 7 is thespring 4, however, is not limited to this configuration. A well-known elastic body such as rubber (not shown) may be used. A size, a type, or the like of the elastic body may be selected according to a size and a material of thebody part 2, a weight and a playing style of the player P, or the like. In the first embodiment, one unit of thespring 4 is used, however, a plurality of springs may be used. A position of thespring 4 is not specifically limited. - As shown in
FIG. 9 , thesupport member 5 is a ball transfer with a spherical body installed therein and serves for a smooth slide of theblade 3. Thesupport member 5 used in the first embodiment is, for example, manufactured by FREEBEAR Corporation (FreeBare: C-85). - As shown in
FIG. 2 andFIG. 9 , twosupport members 5 are interposed, each at the central part C, between the lower surface of theupper blade 3 a and the upper surface of thelower blade 3 b and between the lower surface of thelower blade 3 b and the upper surface of theslide board 7. In one of the twosupport members 5, a spherical body installed therein is formed to come in contact with the lower surface of theupper blade 3 a. In anothersupport member 5, a spherical body installed therein is formed to come in contact with the upper surface of theslide board 7. - The
blade 3 slides according to a weight shift of the player P as described later. Therefore, theblade 3 slides smoothly by interposing thesupport members 5 at a part where theupper blade 3 a and thelower blade 3 b intersect and at a part where thelower blade 3 b and theslide board 7 intersect. - In the first embodiment, an iron plate (not shown) is each disposed at a part where the spherical body installed in the
support member 5 comes in contact with the lower surface of theupper blade 3 a and the upper surface of theslide board 7. In the first embodiment, thesupport member 5 is a ball transfer, however, is not limited to this. Thesupport member 5 may be a well-known means for a smooth slide of two plates being in contact with each other. - In the first embodiment, the first edge 14 and the
second edge 45 are made of carbon steel, however, are not limited to this, and any other material may be used. - Next is described a method of manufacturing the
slide play apparatus 1. - The
body part 2 is unitarily formed and is made of carbon fiber reinforced plastic (CFRP) having elasticity and high strength. As shown inFIG. 2( c), in the first embodiment, the body part 2 (or a carbon fiber reinforced plastic plate 51) is formed by laminating commercially available prepreg while changing orientation directions of fiber thereof, into a tubular mold, and allowing it to cure. The prepreg may be, for example, Besfight (registered trademark) (original yarn: HTA-12K, containing a 37% by mass of epoxy resin) manufactured by TOHO TENAX Co., Ltd. - As shown in
FIG. 2( c) andFIG. 2( d), theslide board 7 is formed by adhering thepolyethylene plate 52 to the lower surface of the carbon fiber reinforcedplastic plate 51 with an epoxy resin-based adhesive. The first edges 14 a, 14 b made of chevron-shaped carbon steel are fitted to both ends of thepolyethylene plate 52 and are attached by pressure to the carbon fiber reinforcedplastic plate 51 and thepolyethylene plate 52. - Material of which the
body part 2 is made is not limited to the carbon fiber reinforced plastic, and may be, for example, glass fiber reinforced plastic (GFRP), acrylonitrile butadiene styrene (ABS), or the like. Further, the material is not limited to resin and may be wood, metal, or the like. The material is preferably light and excellent in durability, elasticity and strength. - In the first embodiment, the
body part 2 is unitarily formed, however, is not limited to this configuration. Thebody part 2 may be formed by joining separately-formed boards such as, for example, theupper board 6, slideboard 7,nose board 8, andtail board 9. - Alternatively, the
body part 2 maybe formed in a so-called sandwich structure, in which a wooden board or foamed polyurethane is interposed between a pair of carbon fiber reinforcedplastic plates - As shown in
FIG. 6( a),FIG. 6( b) andFIG. 6( c), to form theblade 3, both ends of the carbon fiber reinforcedplastic plate 51, in which the fixingportions portion 43 are formed, are curved and are adhered to the lower surface of theupper board 6. More specifically, theupper blade 3 a and thelower blade 3 b are crossed at respective substantially central parts and are fixed to the lower surface of theupper board 6 at the left footfront fixation portion 31 and right footrear fixation portion 34 and at the left footrear fixation portion 37 and right footfront fixation portion 40, respectively (seeFIG. 8) . The second edge 45 (45 a to 45 d) is disposed at the outer end 44 (44 a to 44 d). The respective central parts of theupper blade 3 a and thelower blade 3 b are preferably lapped over the central part C of the body part 2 (seeFIG. 7 ). - In the first embodiment, material of which the
blade 3 is made is carbon fiber reinforced plastic, however, is not limited to this. For example, the material may be glass fiber reinforced plastic (GFRP), acrylonitrile butadiene styrene, (ABS), or the like. Further, the material is not limited to resin and may be wood, metal, or the like. The material is preferably light and excellent in durability, elasticity and strength. The material for thebody part 2 may be different from that for theblade 3. - The
support members upper blade 3 a andlower blade 3 b and between thelower blade 3 b and the upper surface of the slide board 7 (seeFIG. 2 ). An iron plate is each embedded at the part where the spherical body of thesupport member 5 comes in contact with the lower surface of theupper blade 3 a and the upper surface of theslide board 7. Respective centers of thespring 4 and thesupport members 5 are preferably lapped over the central part C of thebody part 2. In the first embodiment, a configuration is provided, but is not limited to, that each spherical body of thesupport members 5 is brought into contact with the lower surface of theupper blade 3 a and the upper surface of the slide board 7 (seeFIG. 9 ). - The
spring 4 is then interposed between theupper board 6 and theupper blade 3 a. In the first embodiment, an upper end of thespring 4 and the lower surface of theupper board 6 as well as a lower end of thespring 4 and the upper surface of theupper blade 3 a are fixed with an epoxy resin adhesive. Thespring 4 may not necessarily be fixed but may only come in contact with the lower surface of theupper board 6 and the upper surface of theupper blade 3 a utilizing elasticity of thespring 4. - In the first embodiment, a configuration is provided, but is not limited to, that the
blade 3 and the lower surface of theupper board 6 are fixed to each other with the epoxy resin adhesive. Any other adhesive or a fastening member such as a screw may be used for the fixation. Both an adhesive and a fastening member may be used for the fixation. - As shown in
FIG. 1 throughFIG. 4 , theslide play apparatus 1 according to the first embodiment has a longitudinal length thereof of about 150 cm and a length between the lower surface of theslide board 7 and the upper surface of theupper board 6 of about 20 cm. Thebody part 2 has a thickness of about 1.5 cm. Theupper board 6 has a maximum width of about 35 cm and a width at the constricted portion K of about 25 cm. Theslide board 7 has a width of 22 cm. As shown inFIG. 4 , the first side curve R of theslide board 7 has a radius of about 8.8 m (seeFIG. 4 ), and the second side curve r of theblade 3 has radius of about 8.2 m. In the first embodiment, a configuration is provided, but is not limited to, that the first side curve R and the second side curve r are formed of circular arcs. The curves may be formed of quadratic curves of the like. - Dimensions described above are not intended to limit the present invention.
- The manufacture method described above is only for illustration and is not intended to limit the present invention.
- Next are described operations of the
slide play apparatus 1. In the first embodiment, description is made assuming a slide on snow surface (piste). - As shown in
FIG. 1 , theslide play apparatus 1 has foot fixing instruments T, T fixed to theupper board 6, into which feet of the player P are fixed, and, when the player P goes on to a slope (sliding surface), slides on the sliding surface with the player P's own weight. In the first embodiment, description is made assuming that a left foot of the player is positioned frontward in a sliding direction. - In the first embodiment, a term “compressed” means that a distance between the
upper board 6 and the slide board 7 (between the fixing portion and the contact portion) becomes smaller than that in a resting state, due to a weight shift of the player P. Herein, the resting state is referred to as a state in which the player P's weight acts on theslide board 7 in a vertical direction. Further, a term “extended” means that the distance between theupper board 6 and the slide board 7 (between the fixing portion and the contact portion) becomes smaller than that in the resting state. - As shown in
FIG. 12 , the player P can slide straight by acting his/her weight on theslide board 7 in the vertical direction. That is, if the player P's weight acts on theslide board 7 in the vertical direction, the second edges 45 a, 45 c disposed on theblade 3 do not come in contact with the sliding surface S. This allows a substantially whole area of the lower surface of theslide board 7 to come in contact with the sliding surface, thus enabling the player P to slide straight. - As shown in
FIG. 13 , if the player P shifts the weight to the left foot along the sliding direction, the distance between theupper board 6 and theslide board 7 on a left foot side is compressed (see arrow 55), and, at the same time, the distance therebetween on a right foot side is extended (see arrow 56) because of reaction force of theblade 3. This facilitates a smooth weight shift. - As shown in
FIG. 14 , theslide play apparatus 1 according to the first embodiment makes a turn when the player P shifts his/her weight to bring the first edge 14 orsecond edge 45 into contact with the sliding surface S (that is, make the first edge 14 orsecond edge 45 sink into the sliding surface S). - Herein, description is made assuming that the player P makes a turn to the right in the sliding direction (in a direction of
arrow 62 ofFIG. 16 ). - As shown in
FIG. 14( a), if the player P shifts his/her weight to a left foot front side (tiptoe side), the distance between theupper board 6 and theslide board 7. on the left foot font side (tiptoe side) is compressed (see arrow 57), and, at the same time, the distance therebetween on a rear side (heel side) is extended (see arrow 58). This tilts theslide play apparatus 1 as a whole at a degree of γ to allow thefirst edge 14 a to catch the sliding surface S. - Then the protruding
portion 43 a of theupper blade 3 a is pushed in a direction of the weight shift. This allows thesecond edge 45 a to catch the sliding surface S, enabling a turn to be made sharply. - More specifically, if the player P shifts his/her weight to the left foot font side (tiptoe side), the distance between the left foot
front fixation portion 31 and the left footfront contact portion 32 is compressed, and, at the same time, the distance between the right footrear fixation portion 34 and the right footrear contact portion 35 is extended because of reaction force of the compression (seeFIG. 6 ). At this time, the protrudingportion 43 a slides along with the weight shift of the player P, because the left footfront contact portion 32 and the right footrear contact portion 35 are only in contact with the upper surface of theslide board 7, though the left footfront fixation portion 31 and the right footrear fixation portion 34 of theupper blade 3 a are fixed to the lower surface of theupper board 6. - As shown in
FIG. 15 , when the distance between the left footfront fixation portion 31 and the left footfront contact portion 32 of theupper blade 3 a is compressed (seeFIG. 6 ), theupper blade 3 a turns around in a direction ofarrow 60 owing to the torsion in the lapping portion La. Since theupper blade 3 a has both ends thereof fixed at the left footfront fixation portion 31 and the right footrear fixation portion 34, the protrudingportion 43 a then slides with the upper surface of theslide board 7 and is pushed in the direction of the weight shift (see arrow 61). As shown inFIG. 14( a), this allows thesecond edge 45 a disposed in the protrudingportion 43 a to catch the sliding surface S. - In the central part C, the
upper blade 3 a,lower blade 3 b, and thesupport member FIG. 9 , respective centers of theupper blade 3 a, thelower blade 3 b, and thesupport members upper blade 3 a, thelower blade 3 b and thesupport member - As shown in
FIG. 16 , if the weight is shifted to the left foot front side (tiptoe side), a load is also applied to the tiptoe side of the right foot, which compresses a distance between the right footfront fixation portion 40 and the right foot front contact portion 41 (see arrow 59). Nevertheless, the weight of the player P is consistently applied to the left foot front side, the distance between the left footfront fixation portion 31 and the left footfront contact portion 32 is more compressed than the distance between the right footfront fixation portion 40 and the right footfront contact portion 41. The protrudingportion 43 d slides along a shift of the player P due to an action similar to that of the protrudingportion 43 a to be pushed toward the sliding surface S. This allows thesecond edge 45 d to catch the sliding surface S (see arrow 63). - For the reasons described above, the
second edge 45 a disposed on the protrudingportion 43 a, thefirst edge 14 a disposed on theslide board 7, and thesecond edge 45 d disposed on the protrudingportion 43 d catch the sliding surface. Further, the player P can make a turn sharply, because the protrudingportions FIG. 7 ) having a radius smaller than that of the first side curve R of theslide board 7. - The protruding
portions - Further, the player P can make a sharp turn and good braking, if the player P makes a turn in a direction of
arrow 62 while shifting the weight (applying a large load) to the right foot front side (tiptoe side). This is because theedge 45 d disposed on the protrudingportion 43 d further catches the sliding surface S. - As shown in
FIG. 14( b), if the player P makes a turn to the left, the player P shifts his/her weight to a left foot rear side (heel side). - The player P can also make a turn to the left by shifting the weight to the right foot front side (tiptoe side) or the right foot rear side (heel side).
- The player P can make various types of turns because the player P can use the first edge 14 or the
second edge 45 accordingly by adjusting the weight shift. - As shown in
FIG. 14( a), if the player P shifts his/her weight to the left foot front side (left foot tiptoe side, the distance between theupper board 6 and theslide board 7 on the front side is compressed (see arrow 57), and, at the same time, the distance between theupper board 6 and theslide board 7 on the rear side (heel side) is extended (see arrow 58). At this time, as shown inFIG. 6 , because theblade 3 is formed of a substantially X shape as viewed from above, the distance between the left footfront fixation portion 31 and the left footfront contact portion 32 is compressed, and, at the same time, the distance between the right footrear fixation portion 34 and the right footrear contact portion 35 is extended because of reaction force of the compression. This facilitates a smooth weight shift in a diagonal direction of the longitudinal axis. - The
slide play apparatus 1 according to the first embodiment has a configuration in which thebody part 2 is formed of a substantial cylinder, and theslide board 7 and theupper board 6 positioned above theslide board 7 are connected with thenose board 8 and thetail board 9. In the configuration, thenose board 8 and thetail board 9 serves as cushions, to thereby cushion an impact exerted on the feet of the player P. Since the impact exerted on the feet of the player P is cushioned, the player P can have sliding fun and feeling different from those obtained from conventional apparatuses. - The
slide play apparatus 1 has theouter end 13 of theslide board 7, having the first side curve R. This allows a turn to be made smoothly because the first edge 14 catches the sliding surface S along the first side curve R. - The
blade 3 has the protrudingportion 43 with thesecond edge 45 disposed thereon. Thesecond edge 45 is positioned further outside than the first edge 14 disposed on theouter end 13 of theslide board 7. Upon the weight shift of the player P, theblade 3 slides in a direction of the weight shift, and thesecond edge 45 disposed on the protrudingportion 43 catches the sliding surface S. The player P can make a sharper turn because the second side curve r formed on theouter end 44 of the protrudingportion 43 has a curvature larger than that of the first side curve R of theslide board 7. - The
slide play apparatus 1 includes theupper blade 3 a and thelower blade 3 b disposed crossly with respect the longitudinal axis X of theslide board 7 to have a substantially X shape as viewed from above. If the player P puts his/her weight, for example, on the left foot front side (tiptoe side), the distance between the left footfront fixation portion 31 and the left footfront contact portion 32 is compressed, and, at the same time, the distance between the right footrear fixation portion 34 and the right footrear contact portion 35 is extended because of reaction force of the compression. This facilitates a smooth weight shift of the player P. Further, the curved portion of theblade 3 also enhances a cushioning property. - The
slide play apparatus 1 has thesupport member 5. This allows friction caused between theslide board 7 and theblade 3 which are in contact with each other to be reduced, thus enabling a smooth slide of theblade 3. - The
slide play apparatus 1 has thespring 4 interposed between theupper board 6 and theslide board 7. This enhances a cushioning property therebetween, which allows a flexible response to a vertical load subjected to theupper board 6 and theslide board 7. - The
slide board 7 has a width smaller than that of theupper board 6. This allows frictional resistance of theslide board 7 to be reduced and a possible range of the weight shift to be narrowed, thus enabling a turn to be made easily. - As described above, the embodiment according to the present invention has been explained in detail with reference to the related drawings. However, the present invention is not limited to the embodiment, and various changes are possible without departing from the gist of the present invention.
- As shown in
FIG. 17 , aslide play apparatus 71 includes: abody part 72 formed of a substantial cylinder; a blade 73; aspring 74 interposed therein at a central part thereof; and a support member (not shown) interposed between the blade 73 and aslide board 82. - The
blade 3 in the first embodiment is formed by combining two boards. However, as shown inFIG. 17( a) andFIG. 17( b), the blade 73 in the second embodiment includes a central part W, and a foot portion 76 (76 a to 76 d) extending from the central part W to have a substantially X shape as viewed from above. - The blade 73 has a curved portion 78 (78 a to 78 d) formed by bending the
foot portion 76. An end 77 (77 a to 77 d) of thefoot portion 76 is fixed to a lower surface of theupper board 79. - As shown in
FIG. 17( b), the blade 73 has a protruding portion 85 (85 a to 85 d) protruding more outward than outer ends (shown in dotted lines) of theslide board 82. A second side curve r is formed on an outer end 86 (86 a to 86 d) of the protrudingportion 85 and has a radius smaller than that of a first side curve R formed on theouter end 85 of theslide board 82. A second edge 84 (84 a to 84 d) is disposed on the outer end 86 (86 a to 86 d) of the protrudingportion 85. - As shown in
FIG. 18( a), thefoot portions FIG. 17( b). As shown inFIG. 18( b), when thefoot portion 76 b and thefoot portion 76 d come in contact with an upper surface of theslide board 82, thefoot portions - A manufacture method and operations in the second embodiment are substantially same as those in the first embodiment, and description thereof is omitted herefrom.
- In the second embodiment, the blade 73 has the
foot portion 76 extending from the central part W to have a substantially X shape as viewed from above. That is, the blade 73 is formed from a single board. This prevents theupper blade 3 a and thelower blade 3 b from having different distances therebetween, unlike in the first embodiment. Therefore, it becomes easy to lap thefoot portions 76 a to 76 d of the blade 73. - In the first embodiment and the second embodiment, the feet of the player P are fixed at right angles with respect to a longitudinal direction of the
slide play apparatuses FIG. 19 , one of the feet of the player P is fixed to one of a pair of theslide play apparatuses slide play 1. - In the third embodiment, the
slide play apparatus 90 includes: abody part 93 including anupper board 91 and aslide board 92; ablade 94; aspring 95; and a support member (not shown). Each width of theupper board 91 and theslide board 92 is formed to be smaller than a width of the player P. A length in the longitudinal direction of theslide play apparatus 90 is formed shorter than that of theslide play apparatus 1, and is about 100 cm. Each foot of the player P is fixed substantially above thespring 95. - A manufacture method and operations in the third embodiment are substantially same as those in the first embodiment, and description thereof is omitted herefrom.
- In the third embodiment, the
slide play apparatus 90 has a configuration as described above, however, is not limited to this. The length, width, or the like of theslide play apparatus 90 may be determined according to a height and a playing style of the player P. - As shown in
FIG. 20 , aslide play apparatus 110 according to a forth embodiment is different from the embodiments described above in structures of anupper board 116 and asupport member 130. - As shown in
FIG. 20( a) andFIG. 20( c), theupper board 116 of theslide play apparatus 110 has recessedportions FIG. 20( c), the recessedportion 120 is formed by putting a dent in a portion of theupper board 116 toward theslide board 117. A bottom face of the recessedportion 120 is flat, to which the foot of the player P is fixed with a foot fixing instrument T. - With the recessed
portion 120 on theupper board 116, a height of the foot of the player P is lowered, thus enabling the player P to get on and off theslide play apparatus 110 without difficulty. Further, a distance between the foot of the player and theslide board 117 is reduced. This makes it possible to easily transmit a weight shift of the player P onto theslide board 117, thus enabling a further smooth slide. Alternatively, as shown inFIG. 20( b), both ends of theupper board 116 may be curved downward from the central part C thereof. - In the fourth embodiment, as shown in
FIG. 20( c), theupper board 116 has the central part C is positioned higher than the bottom face of the recessedportion 120, however, is not limited to this configuration. For example, the central part C may be formed as high as the bottom face of the recessedportion 120. Additionally, the recessedportion 120 may have any other shape. - As shown in
FIG. 20( b) andFIG. 21( a), asupport member 130 in the fourth embodiment penetrates a throughhole 131 formed in thelower blade 113 b and is disposed between theslide board 117 and theupper blade 113 a. - The
support member 130 includes: a rotatingbody 132 disposed to be in contact with above and below; arotational axis 133 inserted into therotating body 132; a T-shapedsupport metal 134 into which therotational axis 133 is inserted; and a joint 135 jointing the T-shapedsupport metal 134 and thelower blade 113 b. - The
rotating body 132 includes a firstrotating body 132 a positioned below and a second.rotating body 132 b positioned above, which are spherical bodies having same diameters and made of hard rubber. A lower end of the firstrotating body 132 a is in contact with theslide board 117, and an upper end thereof, with the secondrotating body 132 b. A lower end of the secondrotating body 132 b is in contact with the firstrotating body 132 a, and an upper end thereof, with theupper blade 113 a. - The
rotational axis 133 includes a firstrotational axis 133 a and a secondrotational axis 133 b, which are inserted into respective centers of the firstrotating body 132 a and the secondrotating body 132 b. Axis directions of the firstrotational axis 133 a and the secondrotational axis 133 b are parallel to a longitudinal direction of theslide play apparatus 110 and are horizontal. Both ends of therotational axis 133 are provided with grooves, on whichrespective nuts 133 c are screwed for fixation. - T-shaped
support metal 134 is configured by a first T-shapedsupport metal 134 a and a second T-shapedsupport metal 134 b in a pair. The T-shapedsupport metal 134 pivotally supports therotating body 132 and is jointed to thelower blade 113 b via the joint 135. As shown inFIG. 22 , the T-shapedsupport metal 134 includes: along hole 136; abase portion 137 on which thelong hole 136 is created; and anoutrigger 138 vertically formed from thebase portion 137. Twolong holes 136 are created on thebase portion 137 and have each an oval cross section elongated upward and downward. The long hole allows therotational axis 133 to be inserted thereinto and to move up and down therein. That is, a diameter of therotational axis 133 is formed smaller than a width of the long hole, 136. Thenuts 133 c disposed at both ends of therotational axis 133 are fixed at respective positions spaced apart from thebase portion 137. Theoutrigger 138 extends parallel to the longitudinal direction of theslide play apparatus 110 and is jointed to thelower blade 113 b via the joint 135. - As shown in
FIG. 22 , the joint 135 joints the T-shapedsupport metal 134 and thelower blade 113 b. The joint 135 includes anabsorber 140 with a communication hole for communicating theoutrigger 138 and thelower blade 113 b, which are fixed with abolt 142 and anut 143 via awasher 141. Theabsorber 140 is formed of a cylinder having a hollow portion into which thebolt 142 is inserted. Theabsorber 140 is constricted in a middle portion thereof. That is, both ends of theabsorber 140 are formed thicker than the middle portion. Theabsorber 140 may be, for example, a well-known rubber bush. Theabsorber 140 is used for absorbing load acting on thesupport member 130 and allowing a travel thereof in the longitudinal direction. Further, theabsorber 140 flexibly responds to a load subjected thereto, because both ends of theabsorber 140 are formed thicker than the middle portion. - With the
support member 130, if the player P shifts his/her weight in a front/rear direction (on a tiptoe/heel side), the firstrotating body 132 a and the secondrotating body 132 b rotate about therotational axis 133 while coming in contact with above and below. This causes a smooth slide of theupper blade 113 a and thelower blade 113 b in a width direction thereof. Thesupport member 130 with theabsorber 140 inserted thereinto absorbs load acting thereon and allows a travel of theupper blade 113 a and thelower blade 113 b in the longitudinal direction. This makes it possible to make a sharp turn, because, similarly to theslide play apparatus 1 in the first embodiment, the player P's weight shift enables the second edges of theupper blade 113 a and thelower blade 113 b to catch a sliding surface. - Suppose that the
rotational axis 133 is fixed to the T-shapedsupport metal 134. The firstrotating body 132 a and the secondrotating body 132 b gall to create a gap therebetween, rotating without any contact with each other. In the fourth embodiment, however, thelong hole 136 is formed to allow therotational axis 133 to travel up and down therein. This makes it possible for the firstrotating body 132 a and the secondrotating body 132 b to be constantly in contact with each other, when a load of the player P acts on theupper board 116, thus preventing rotation without contact. - In the fourth embodiment, the
support member 130 used has a configuration as described above, however, other configuration is also available. For example, therotating body 132 used is spherical, however, it may be oval spherical. The T-shapedsupport metal 134 used is a pair of metal members, however, may be integrally formed. A shape and a material of theabsorber 140 may be determined according to a playing style of the player P. A cushion may be provided in thelong hole 136 in accordance with an inner shape thereof so as to prevent thelong hole 136 and therotational axis 133 from galling. - As described above, the embodiment according to the present invention has been explained with reference to the related drawings. However, the present invention is not limited to the embodiments, and various changes are possible without departing from the gist of the present invention. Further, the present invention may be used not only for recreation but also for other purpose.
- In the first and second embodiments, the
slide play apparatus 1 is used in a substantially same way as a snowboard. However, for example, theslide play apparatus 1 may be used in a same way as a sled by putting a box-like body suited for carrying something or someone on theupper board 6 of theslide play apparatus 1. This case is described with reference toFIG. 16 . A player rides in a box-like body (not shown) disposed on theupper board 6. The player can operate theslide play apparatus 1 by shifting his/her weight with substantially same operations as those in the first embodiment. - Further, the slide play apparatus with such a box-like body put an object (including a person) therein may be pulled from a side of the nose board 8 (see
FIG. 1 ). For example, if pulled from a side ofarrow 62 inFIG. 16 , a load of the object put in the box-like body acts on theblade 3 according to a pulling direction or a change in the sliding surface S. This makes theblade 3 slide, and theslide play apparatus 1 thus slides smoothly following the pulling direction, because thesecond edge 45 a acting in the pulling direction catches the sliding surface S. Moreover, theslide play apparatus 1 has the protrudingportion 43, which can prevent an overturn thereof due to an abrupt operation. - The slide play apparatus according to the present invention may only include the
body part 2 without including theblade 3,spring 4, andsupport member 5, for example (seeFIG. 2( b)). This configuration minimizes components of the slide play apparatus to make the slide play apparatus lighter and to be applied to a play containing aerial actions. - In the first embodiment, description is made assuming that the slide play apparatus according to the present invention slides on a snow surface, however, is not limited to this configuration. The slide play apparatus may slide on a surface of, for example, lawn, sand or water.
- In the first embodiment, the
blade 3 is used for theslide play apparatus 1, however, is not limited to this configuration. Theblade 3 may be used for other structure.
Claims (9)
1. A slide play apparatus comprising:
a slide board having a first edge at an outer end thereof and sliding on a slope;
an upper board positioned above the slide board;
a nose board connecting one end of the slide board to one end of the upper board; and
a tail board connecting the other end of the slide board to the other end of the upper board,
the slide play apparatus being formed of a substantial cylinder.
2. The slide play apparatus according to claim 1 , wherein the outer end has a first side curve.
3. The slide play apparatus according to claim 2 , wherein a blade comprising: a protruding portion protruding more outward than the outer end of the slide board; a second side curve formed on the outer end of the protruding portion and having a curvature larger than that of the first side curve; and a second edge disposed on the outer end of the protruding portion, comes in contact with an upper surface of the slide board.
4. The slide play apparatus according to claim 3 , wherein the slide play apparatus further comprising two blades disposed crossly with respect a longitudinal axis of the slide board and having a substantially X shape as viewed from above, each blade having: a contact portion coming in contact with the upper surface of the slide board; curved portions disposed on a nose board side and on a tail board side; and a fixing portion fixed to a lower surface of the upper board.
5. The slide play apparatus according to claim 4 , wherein the slide play apparatus further comprising a support member each for reducing friction between the slide board and one of the two blades and between the two blades, the support member each being disposed at portions at which the slide board and the one blade, and the two blades are crossed.
6. The slide play apparatus according to claim 5 , wherein an elastic body is interposed between the slide board and the upper board.
7. The slide play apparatus according to claim 6 , wherein a width of the sliding surface is smaller than a width of the boarding surface.
8. The slide play apparatus according to claim 1 , wherein the upper board has a recessed portion which is depressed toward the slide board.
9. A pair of blades disposed crossly with respect a longitudinal axis of a slide board between the slide board and an upper board disposed thereabove and having a substantially X shape as viewed from above, each blade comprising:
a contact portion coming in contact with an upper surface of the slide board;
curved portions disposed on both ends of the contact portion; and
a fixing portion each fixed to both ends of the blade to a lower surface of the upper board,
each blade further comprising a protruding portion protruding more outward than the outer end of the slide board.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPPCT/JP2006/305505 | 2006-03-20 | ||
PCT/JP2006/305505 WO2007108085A1 (en) | 2006-03-20 | 2006-03-20 | Slide play apparatus and blade |
PCT/JP2007/055038 WO2007108380A1 (en) | 2006-03-20 | 2007-03-14 | Slide play apparatus and blade |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090179391A1 true US20090179391A1 (en) | 2009-07-16 |
Family
ID=38522125
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/293,779 Abandoned US20090179391A1 (en) | 2006-03-20 | 2007-03-14 | Slide play apparatus and blade |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090179391A1 (en) |
EP (1) | EP2002869A4 (en) |
JP (2) | JP4309425B2 (en) |
CN (1) | CN101389382B (en) |
WO (2) | WO2007108085A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100090425A1 (en) * | 2008-10-13 | 2010-04-15 | Alon Karpman | Recreational personal vehicle for sliding |
US20120061928A1 (en) * | 2010-09-09 | 2012-03-15 | Gregory George Ryan | Snowskate and a tip for a snowskate |
US10052549B2 (en) * | 2016-02-08 | 2018-08-21 | George Andrew Charkales | Snow ski and skate board platform combination |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010079590A1 (en) * | 2009-01-07 | 2010-07-15 | Ota Junzo | Sliding game tool |
CN114377375B (en) * | 2022-01-13 | 2023-10-20 | 惠州市朝鹏运动器材有限公司 | PU anticollision flax fiber balsawood slide core |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1587749A (en) * | 1924-07-14 | 1926-06-08 | Albert S Bierly | Propulsive-spring foot support |
US20060043697A1 (en) * | 2004-09-02 | 2006-03-02 | Graham Sommer | Snow ski with slotted edges |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7912699U1 (en) * | 1979-08-02 | Strassl, Peter, Dipl.-Ing., 8000 Muenchen | Archery skis | |
FR810762A (en) | 1935-12-16 | 1937-03-30 | Variable reverse bend ski | |
DE3505255A1 (en) * | 1985-02-15 | 1986-08-28 | Walter Dr. 4712 Werne Kuchler | Double-decked ski |
DE3602364A1 (en) | 1986-01-27 | 1987-07-30 | Meyer Hans Dipl Ing Fh | SPRINGBOARD FOR A SKI |
DE3705720A1 (en) * | 1987-02-23 | 1988-09-01 | Ludwig Stadthalter | Snow-board for winter sporting purposes |
JPH1024140A (en) * | 1996-07-11 | 1998-01-27 | Juzo Fukunaka | Portable snow shoes |
DE19652779A1 (en) * | 1996-12-19 | 1998-06-25 | Marker Deutschland Gmbh | Snowboard |
US5823562A (en) * | 1997-08-27 | 1998-10-20 | North Shore Partners | Snowboard |
JP2003093574A (en) * | 2001-09-26 | 2003-04-02 | Keetsuu Japan:Kk | Sport tool |
CN2581020Y (en) * | 2002-11-01 | 2003-10-22 | 荣和塑胶钢业(深圳)有限公司 | Skis |
JP2004160095A (en) | 2002-11-15 | 2004-06-10 | Mitsuo Sato | Snowboard |
DE10359228A1 (en) * | 2003-12-17 | 2005-07-14 | Kneissl Tirol Gmbh | Snow glider, especially carving skis |
-
2006
- 2006-03-20 WO PCT/JP2006/305505 patent/WO2007108085A1/en active Application Filing
- 2006-03-20 JP JP2006520554A patent/JP4309425B2/en not_active Expired - Fee Related
-
2007
- 2007-03-14 WO PCT/JP2007/055038 patent/WO2007108380A1/en active Application Filing
- 2007-03-14 CN CN2007800062453A patent/CN101389382B/en not_active Expired - Fee Related
- 2007-03-14 JP JP2008506260A patent/JPWO2007108380A1/en active Pending
- 2007-03-14 EP EP07738509A patent/EP2002869A4/en not_active Withdrawn
- 2007-03-14 US US12/293,779 patent/US20090179391A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1587749A (en) * | 1924-07-14 | 1926-06-08 | Albert S Bierly | Propulsive-spring foot support |
US20060043697A1 (en) * | 2004-09-02 | 2006-03-02 | Graham Sommer | Snow ski with slotted edges |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100090425A1 (en) * | 2008-10-13 | 2010-04-15 | Alon Karpman | Recreational personal vehicle for sliding |
US20120061928A1 (en) * | 2010-09-09 | 2012-03-15 | Gregory George Ryan | Snowskate and a tip for a snowskate |
US8632079B2 (en) * | 2010-09-09 | 2014-01-21 | Gregory George Ryan | Snowskate and a tip for a snowskate |
US10052549B2 (en) * | 2016-02-08 | 2018-08-21 | George Andrew Charkales | Snow ski and skate board platform combination |
US20180353841A1 (en) * | 2016-02-08 | 2018-12-13 | George Andrew Charkales | Locomotion apparatus having a snow ski and skate board platform combination with brake |
US10695657B2 (en) * | 2016-02-08 | 2020-06-30 | George Andrew Charkales | Locomotion apparatus having a snow ski and skate board platform combination with brake |
Also Published As
Publication number | Publication date |
---|---|
JPWO2007108085A1 (en) | 2009-07-30 |
EP2002869A9 (en) | 2009-04-22 |
EP2002869A4 (en) | 2009-05-27 |
CN101389382A (en) | 2009-03-18 |
CN101389382B (en) | 2010-06-02 |
JPWO2007108380A1 (en) | 2009-08-06 |
JP4309425B2 (en) | 2009-08-05 |
WO2007108380A1 (en) | 2007-09-27 |
EP2002869A2 (en) | 2008-12-17 |
WO2007108085A1 (en) | 2007-09-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6669215B2 (en) | Steerable locomotion device for sport or leisure | |
US6773021B2 (en) | Sliding device | |
US5782482A (en) | Snowboard and method of construction | |
US7425017B2 (en) | Sport board | |
US6105991A (en) | Core for a gliding board | |
US6502850B1 (en) | Core for a gliding board | |
US4029330A (en) | Cambered skateboard provided with longitudinally adjustable truck assemblies | |
US8226109B2 (en) | Splitboard bindings | |
US9022412B2 (en) | Splitboard bindings | |
US7484738B2 (en) | Multi-edge snowboard | |
US7537220B2 (en) | Skateboard system | |
JPWO2009037750A1 (en) | Playground equipment and elastic mechanism | |
US20090179391A1 (en) | Slide play apparatus and blade | |
US20030222420A1 (en) | Composit sport board | |
US6131939A (en) | Snow ski having slidingly interconnected upper and lower ski sections | |
JPH0558175U (en) | Skis having a non-rectangular cross section | |
US20020158430A1 (en) | Gliding apparatus having two boards | |
US20110272904A1 (en) | Skateboard wheel and method of maneuvering therewith | |
US20110148074A1 (en) | Articulated Two-piece Snowboard With Rigid, Flexible Connector | |
US10427026B1 (en) | Longboard-skateboard and longboard-skateboard conversion kit | |
US6520529B1 (en) | Integrated modular glide board | |
JP4996140B2 (en) | Snow slide |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |