WO1997018017A1 - Chassis flexible de patin - Google Patents

Chassis flexible de patin Download PDF

Info

Publication number
WO1997018017A1
WO1997018017A1 PCT/US1996/016265 US9616265W WO9718017A1 WO 1997018017 A1 WO1997018017 A1 WO 1997018017A1 US 9616265 W US9616265 W US 9616265W WO 9718017 A1 WO9718017 A1 WO 9718017A1
Authority
WO
WIPO (PCT)
Prior art keywords
skate
ofthe
arms
boot
flexible frame
Prior art date
Application number
PCT/US1996/016265
Other languages
English (en)
Inventor
Tomas Leszczynski
Original Assignee
Tomas Leszczynski
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tomas Leszczynski filed Critical Tomas Leszczynski
Publication of WO1997018017A1 publication Critical patent/WO1997018017A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C1/00—Skates
    • A63C1/30—Skates with special blades
    • A63C1/36—Skates with special blades with several blades
    • 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
    • A63C17/00—Roller skates; Skate-boards
    • A63C17/02—Roller skates; Skate-boards with wheels arranged in two pairs
    • 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
    • A63C17/04—Roller skates; Skate-boards with wheels arranged otherwise than in two pairs
    • A63C17/06—Roller skates; Skate-boards with wheels arranged otherwise than in two pairs single-track type
    • A63C17/061—Roller skates; Skate-boards with wheels arranged otherwise than in two pairs single-track type with relative movement of sub-parts on the chassis
    • A63C17/062—Roller skates; Skate-boards with wheels arranged otherwise than in two pairs single-track type with relative movement of sub-parts on the chassis with a pivotal frame or cradle around transversal axis for relative movements of the wheels

Definitions

  • This invention generally relates to a skate construction, and particularly to skates having a flexible frame construction to improve their stability in turns and at high speeds and create a smoother ride over uneven terrain
  • a popular form of skating called “roller blading” or “in-line skating” uses skates having four or five wheels mounted in-line to the bottom of a skate boot
  • Such in-line skates resemble ice skates which have a single blade mounted in the center ofthe skate boot
  • turns for in-line skates are executed similar to ice skates in that the skater turns by leaning and angling the blade of the skate in the direction ofthe turn
  • This type of edge-controlled turn requires precise control ofthe skater's vertical balance as well as the knees and ankles to maintain the correct inclination angle ofthe skates
  • the skater must exert a high degree of control effort continuously while applying only a light force to execute the turn Even a small bump or nick in the skating surface can cause the skate's edge to be deflected from the desired curvature ofthe turn and veer off or lose contact with the skating surface
  • the skater can overcome the skate's tendency to veer by applying somewhat greater force to bear down on a turn.
  • Specific objectives include providing the new skate construction with means for controlling the degree of stability in turning movements, and also interchangeability of parts for different types of skating
  • an improved sate construction comprises of skate boot normally oriented in a vertical direction and having a bottom of a given width with a centerline thereof, a pair of skate edge members mounted side-by-side in parallel with each other to the bottom ofthe skate boot on respective sides ofthe centerline, and flexible frame means for mounting said pair of skate edge members to the bottom such that the skate edge members can shift flexibly with respect to each other to maintain contact on a skating surface when the skate boot is inclined at the inclination angle to the vertical direction during a turn
  • pivotable arms are mounted perpendicular to and on opposite sides ofthe centerline ofthe bottom of the skate boot (referred to as a "flex-skate” construction)
  • pivotable arms mounting roller wheels are mounted in in-line configuration parallel to the centerline ofthe boot (referred to as a "flex-blade” construction)
  • the skate edge members consist of paired sets of front and rear roller wheels carried on respective wheel plates mounted on respective sides ofthe centerline ofthe boot
  • the flexible frame is formed by front and rear posts secured to the bottom each having a plurality of arms pivotably mounted thereon with distal ends extending on respective sides of the centerline of the skate boot
  • the wheel plates for the roller wheels are pivotably mounted to the distal ends ofthe arms
  • a turning stability control member can be provided for controlling the flexible response ofthe arms during a turn in a flex-skate system
  • the control member may take the form of an elastic block, elastic bands, friction member, dampening member, or a torsion spring controlling the pivoting movement ofthe flexible arms
  • the skate edge members consist of a pair of blades pivotably mounted to the distal ends ofthe arms
  • the pair of blades can be interchangeable with the paired sets of wheel plates and roller wheels to allow conversion of the skates between ice skating and roller skating
  • the invention encompasses the flexible frame structure itself which may be used in other types of skating apparatus as well
  • the flexible frame construction with roller wheels is attached to a skate board
  • the skate edge members consist of paired sets of front and rear roller wheels carried on pivotable arms mounted in-line in parallel with the centerline ofthe boot
  • the flexible frame is formed by front and rear posts secured to the bottom of the skate boot having the arms pivotably mounted thereon with distal ends coupled to the axles for the roller wheels
  • the skate edge members consist of a pair of blades attached to the distal ends of the arms of the flexible frame construction The pair of blades can be interchanged with the paired sets of wheels for roller skating
  • Figs IA - ID illustrate the dynamics of flex-skate turning in sharp edge skating as compared to flat surface skating
  • Figs 1 E - IF illustrate the dynamics of skating over an obstacle with in-line and flex-blade system
  • Fig 2 illustrates a preferred embodiment of a flex-skate roller skate having a flexible frame skate construction in accordance with the invention
  • Fig 3 A is a schematic view of a flex-skate four-arm flexible frame skate construction in accordance with the invention.
  • Fig 3B is a detailed view ofthe post and arm construction for the skate
  • Fig. 3C - 3D illustrates a preferred embodiment of a flex-blade roller skate having a flexible frame construction in accordance with the invention
  • Fig. 3E illustrates the braking action of a flex-blade skate
  • Fig 3G illustrates an arm with openings for the spring
  • Fig 4 illustrates the dynamics of turning using a flex-skate flexible frame skate construction in accordance with the invention
  • Fig 5 A is a schematic view of a flex-skate three-arm flexible frame skate construction in accordance with the invention
  • Fig 5B is a detailed view ofthe post and arm construction for the skate
  • Fig 6 shows the construction of an embodiment ofthe arm used in the flex-skate flexible frame construction
  • Fig 7 shows the construction of another embodiment of the arm used in the flex-skate flexible frame construction
  • Figs 8A - 8C (and 10B) show alternative structures for a stability control member for controlling the flexible response ofthe arms in the flex-skate flexible frame construction
  • Fig 8D shows a dampening element which can be used with a stability control member
  • Figs 9A - 9C show four-arm and three-arm wheel plate structures for the flex-skate flexible frame construction
  • Figs 10A - 10B illustrate another embodiment of a stability control member for controlling the flexible response ofthe arms in the flex-skate flexible frame construction
  • Fig 1 1 illustrates a preferred embodiment of a flex-skate flexible frame construction having paired sets of blades for an ice skate which is interchangeable with the construction having paired sets of roller wheels for a roller skate
  • Fig 12 illustrates a preferred embodiment of a flex-blade flexible frame construction having paired sets of wheels
  • an improved flex-skate construction in accordance with the present invention includes a skate boot 10 normally oriented in a vertical direction having a substantially rigid bottom 12 defined by a given width and a centerline CL along the middle ofthe boot width
  • a pair of skate edge members 14a, 14b are mounted side-by-side in parallel with each other to the bottom of the skate boot spaced symmetrically on respective sides ofthe centerline CL
  • a flexible frame structure, described in further detail below, is used to mount the pair of skate edge members 14a, 14b to the bottom 12 ofthe skate boot 10 such that the skate edge members 14a, 14b can shift flexibly with respect to each other to maintain contact on a skating surface when the skate boot is inclined at an inclination angle to the vertical direction during a turn
  • the paired edge members and flexible frame mounting of the skates allow the skater to maintain stable contact on the skating surface by the skater's weight, applied downwardly through the skate boots, being distributed across the supporting edges in tandem This allows the skater to apply more dynamic weight force through the boot while need
  • a preferred embodiment of the flex-skate adapted for roller skating is shown
  • the flex-skate has the aforementioned skate boot 10 and rigid bottom 12, and the skate edge members are paired sets (left and right sides) of front and rear roller wheels 24a, 24b, 25a, 25b carried on respective wheel plates 26a, 26b, 27a, 27b
  • the roller wheels and wheel plates are mounted by the flexible frame symmetrically about the centerline CL ofthe boot
  • the flexible frame is formed by front and rear posts 18, 19, respectively, which are fixed to and extend from the bottom 12 of the skate boot 10
  • a plurality of arms 28 are pivotably mounted to each post with distal ends extending symmetrically on respective sides of the centerline CL.
  • the wheel plates 26a, 26b, 27a, 27b are pivotably mounted to the distal ends of the arms on respective (left and right) sides of the front and rear posts 18, 19
  • four arms are mounted to each of the front and rear posts
  • two ofthe arms are mounted in upper and lower positions on a front part ofthe front post 18, and the other two arms are mounted in corresponding upper and lower positions on a rear part ofthe post
  • the arm is formed as an elongated, rigid plate having a central journal opening 20 through which a pin 21 is inserted to secure the arm pivotably to the post so that its distal ends can shift up and down
  • the distal ends are provided with journal openings 32 for attachment to the respective wheel plates
  • each wheel plate 26 (27) for the four-arm flexible frame construction has four brackets 30 which are pivotally attached via bushings 3 1 provided through the journal openings 32 in the distal ends of the four arms 28
  • Each roller wheel is rotatably mounted on an axle 33 fixed to the corresponding wheel plate
  • a brake 22 is provided at the toe of each skate boot with a friction surface made of a durable material protruding toward the ground
  • a brake 22 can also be mounted to the rear ofthe back post similar to systems used with in-line skating today
  • a preferred embodiment of a flex-blade system using a flexible frame construction is shown
  • the skate boot 10 has a rigid bottom 12, and the skate edge members are paired sets (front and back pairs) of front roller wheels 60a, 60b and rear roller wheels 61a, 61b attached to respective sets of arms 62a, 62b and 63 a, 63b
  • the roller wheels are mounted by the flexible arms symmetrically with respect to the centerline CL ofthe boot.
  • the flexible frame is formed by front and rear posts 64 and 65 joined by a middle part 66
  • the paired sets or arms 62a, 62b and 63a, 63b are pivotably mounted to axles 68 through the respective posts and have distal ends attached to the roller wheel axles
  • the flex-blade system allows the roller wheels to flex their positions when encountering obstacles, thereby improving the smoothness ofthe ride
  • a rear brake pad 65a is installed at the back ofthe boot with braking parts positioned proximate the wheels 61a, 61 b A braking action can take place when a critical angle a of backward rotation of the skate boot is achieved
  • Various other brake pad designs may be used, such as one which brakes against only one wheel 61b
  • Fig 3F shows a detail ofthe post 64 or 65 with a spring 67 mounted on one side around the axle mount 68 with ends attached to a respective one ofthe arms 62 or 63
  • Fig 4 illustrates the dynamics ofthe flexible frame construction for flex-skating turns (viewed from the rear).
  • the skate is oriented in the vertical direction for going in a straight line
  • the skater's weight applied through the boot 10 is distributed via rear post 19, arms 28, and wheel plates 27 over both roller wheels 25a, 25b
  • the flexible frame construction operates to shift the relative positions ofthe roller wheels 25a, 25b so that the skater's boot can be inclined at the turning angle while both wheels stay in contact with the ground
  • the frame has reached the maximum extent of flexing where the wheel plate on the inner side reaches the limit of the post
  • the skater can incline the skate past the maximum extent of flex and maintain the inside wheel in contact with the ground
  • the point of contact of the inside wheel is inside of the turning arc, as compared to in-line skates, resulting in a more controlled turn
  • Figs 5A and 5B another embodiment ofthe flex-skate for roller skating is shown having a three-arm flexible frame construction
  • Three arms 28 are mounted to each of the front and rear posts 38, 39
  • One arm is mounted in an upper position through a slot 35 formed in the post, and the other two arms are mounted in lower positions on the front and rear parts of the post
  • the wheel plate for the three-arm version has three brackets 30 for attachment to the corresponding distal ends ofthe three arms Due to the enhanced stability and control ofthe flex-skate construction, the height ofthe boot can be reduced as compared to conventional in-line skate boots, and the boot sole mounting to the frame for the wheels need not be as rigid as in conventional skating boots
  • the skater can even wear ordinary shoes such as sneakers which can re removably attached to the frame be step-in clamps or even VelcroTM fasteners
  • Fig 5 A by the frame having platforms 12a and 12b for the toe and heel ofthe skater's shoe, respectively, and
  • the flexible frame mounting can also employ two arms for each post instead of three or four as previously described At each post, the two arms are mounted in upper and lower positions through a lateral opening in the post
  • the arm for the two-arm version may be formed, as shown in Fig 7, for example, with a double-wall, box-like structure 28', for the requisite strength and torsional rigidity
  • the wheel plate correspondingly has upper and lower brackets for the distal ends ofthe two arms
  • the flexible frame skate construction can also include a turning stability control member for controlling the flexible response ofthe arms for shifting the relative positions of the inside versus outside roller wheels during a turn
  • a turning stability control member for controlling the flexible response ofthe arms for shifting the relative positions of the inside versus outside roller wheels during a turn
  • One embodiment shown in Fig 8 A can consist simply of a block 40 secured to each post 18 ( 19) proximate to and in the same plane as the plane of movement of one or more arms mounted to the post
  • the block has a surface 41 made of a shock absorbing material such as rubber against which the sides ofthe arm can butt against during an upward vertical movement, corresponding to the shifting of the inside wheel in a turn This acts to dampen the shift forces on the flexible frame during a turn
  • FIG 8B another embodiment ofthe turning stability control member is in the form of elastic bands 43 linked between opposite distal ends of arms in upper and lower positions This also has the effect of dampening the shift forces loaded on the arms during a turn
  • a third example ofthe control member has a frictional clip member 44 which applies a friction resistance against a bearing member 45 secured to one of the pins 21 for the arms
  • the bearing member 45 can have a conical shape for progressively increased frictional resistance, and a screw rod 46 and control knob 47 can be used to shift the position of the clip member 44 along the length ofthe bearing member 45
  • a dampening element 48 is provided for absorbing shock to the wheels du ⁇ ng a turn
  • the dampening element is in the form of a triangular shape interposed between the inner ends ofthe halves 28a, 28b forming the arm 28 Forces applied on the arm, particularly by the inside wheel during a turn, cause the two arm halves to assume a straight, extended position in which the inner ends ofthe two halves compress the dampening element for shock absorption
  • This version is readily adapted to the box-like configuration for the arm shown in Fig 7, wherein the dampening element can be positioned in the lateral side joining the parallel arm walls
  • a further example ofthe turning stability control member is shown in the form of a torsion sp ⁇ ng 50 coupled to one side of an arm (for the inside wheel) to provide a sp ⁇ ng resistance to the shift forces du ⁇ ng a turn
  • This version is suitable for the three-arm frame structure, as shown in Fig 5 A, since the spring can be housed within the post 38 (39)
  • the spring 50 is retained by a block 49 in the post housing, and the tension in the spring can be adjusted by a screw rod 5 l which is threaded for progressively pulling the end ofthe spring to wind it or unwind it as desired
  • a further example of the turning stability control member is shown in the form of an extension spring 80 coupled to one side of wheel plate 81 to provide a spring resistance to the shift forces du ⁇ ng a turn
  • This version is suitable for the three-arm frame structure, as shown in Fig 5A, as the spring can be housed within the post 38 (39)
  • the flex-skate flexible frame construction can be adapted to interchange skate edge elements for different kinds of skating
  • Fig 1 1 depicts how the flexible frame construction of the two-arm type can be used to mount paired sets of roller wheels for roller skating
  • Each blade 55 is formed with front and rear mounting plates 58, 59 provided with brackets or other fixtures for attachment to the distal ends of the arms 28
  • the posts can be fixed to the bottom of a skate boot, as in Fig 3 A, which is used for both types of skating, or they can be secured to toe and heel platforms onto which the skater s own shoe for that type of skating is clamped
  • the flex-skate flexible frame construction can also be adapted to other types of sports apparatus in which it is desired to maintain paired edge elements in contact with the ground for turns
  • a conventional skateboard usually has paired sets of front and rear wheels mounted on fixed axles and the board is pivotably mounted to a central part ofthe axle structure
  • a new type of skateboard can be formed having fixed posts secured to the bottom ofthe board and provided with the above-described pivotable arms mounting wheel plates and wheels
  • the flex-skateboard ofthe invention would be controlled by applying the skater's weight downwardly to carve turns by flexing the wheels on one side relative to the other, thereby resulting in a feeling more akin to snowboarding
  • a flex-blade system can also improve the smoothness of in-line skating systems in encountering obstacles

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Abstract

Ensemble patin flexible comprenant une chaussure (10), une paire d'éléments latéraux (14a, 14b) montée sur les côtés respectifs de la ligne centrale de la chaussure et un châssis flexible (28, 26a, 26b, 27a, 27b) reliant les éléments latéraux à la chaussure, afin qu'ils se déplacent en souplesse l'un par rapport à l'autre, tout en maintenant le contact sur une surface quand la chaussure est inclinée dans un virage. Ce châssis possède des piliers avant (18) et arrière (19) fixés à la base de la chaussure et sur lesquels sont montés pivotants une pluralité de bras (28) dont les extrémités distales s'étendent sur les côtés respectifs de sa ligne centrale. Pour le patinage à roulettes, des roulettes avant (24a, b) et arrières (25a, b) supportées par des plaques de roues (26a, b; 27a, b) sont montées pivotantes sur les extrémités distales des bras. On peut utiliser ce châssis pour le patinage à glace en fixant une paire de lames (55a, 55b) aux bras. L'ensemble peut éventuellement comporter un élément de commande de stabilité en virage (41, 43, 44, 48, 50) afin de commander la souplesse des bras pendant le virage, ainsi qu'un élément amortisseur destiné à amortir les chocs. On peut mettre en application une construction à lames souples dans laquelle les roues avant (60a, 60b) et arrière (61a, 61b) sont portées par des bras pivotants avant et arrière (62a, b; 63a, b) montés pivotant en alignement par rapport à la base de la chaussure.
PCT/US1996/016265 1995-11-13 1996-10-10 Chassis flexible de patin WO1997018017A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US659595P 1995-11-13 1995-11-13
US60/006,595 1995-11-13
US61803096A 1996-03-25 1996-03-25
US08/618,030 1996-03-25

Publications (1)

Publication Number Publication Date
WO1997018017A1 true WO1997018017A1 (fr) 1997-05-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/016265 WO1997018017A1 (fr) 1995-11-13 1996-10-10 Chassis flexible de patin

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WO (1) WO1997018017A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2766382A1 (fr) * 1997-07-23 1999-01-29 Bernard Jonas Planche a roulettes tout terrain
EP1213043A1 (fr) * 2000-12-06 2002-06-12 Wolfram Gorisch Appareil à roulettes dirigé par inclinasion
US7306240B2 (en) 2003-01-17 2007-12-11 Shane Chen Turnable wheeled skate
DE102007031237A1 (de) 2007-07-05 2009-01-08 Gorisch, Wolfram, Dr. Kippwinkel-gelenktes Rollgerät mit versetzten Rollen
FR2931395A1 (fr) * 2008-05-21 2009-11-27 Olivier Antenat Dispositif de suspension d'un mobile
EP2501444A1 (fr) * 2009-11-16 2012-09-26 Triskate Technology, LLC. Patin à roulettes et blocs de roues pour celui-ci

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US330133A (en) * 1885-11-10 Convertible skate
US1499448A (en) * 1922-07-03 1924-07-01 Wilber D Crawford Skate
US3292940A (en) * 1964-11-12 1966-12-20 Dorothea M Weitzner Convertible ice, hockey and roller skates
US4272090A (en) * 1979-03-09 1981-06-09 Wheat Ira N Roller skate
DE3040856A1 (de) * 1980-10-30 1982-06-03 Ulrich 7141 Oberstenfeld Gonell Sport- und freizeitgeraet fuer den winter
US4375293A (en) * 1979-11-07 1983-03-01 Francisco Solbes Front suspension and steering system for cycles and motorcycles having two interdependent points of support on the ground
US4403784A (en) * 1981-01-22 1983-09-13 Gray Robert C Roller skate axle suspension
GB2160780A (en) * 1984-05-29 1986-01-02 Barry Alan Hawkes Roller skates, skateboards and the like
US5330214A (en) * 1991-09-03 1994-07-19 Brooks Paul F Simplified steering mechanism for skateboards and the like
US5342071A (en) * 1993-05-06 1994-08-30 Mike Soo In-line roller skate brake assembly

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US330133A (en) * 1885-11-10 Convertible skate
US1499448A (en) * 1922-07-03 1924-07-01 Wilber D Crawford Skate
US3292940A (en) * 1964-11-12 1966-12-20 Dorothea M Weitzner Convertible ice, hockey and roller skates
US4272090A (en) * 1979-03-09 1981-06-09 Wheat Ira N Roller skate
US4375293A (en) * 1979-11-07 1983-03-01 Francisco Solbes Front suspension and steering system for cycles and motorcycles having two interdependent points of support on the ground
DE3040856A1 (de) * 1980-10-30 1982-06-03 Ulrich 7141 Oberstenfeld Gonell Sport- und freizeitgeraet fuer den winter
US4403784A (en) * 1981-01-22 1983-09-13 Gray Robert C Roller skate axle suspension
GB2160780A (en) * 1984-05-29 1986-01-02 Barry Alan Hawkes Roller skates, skateboards and the like
US5330214A (en) * 1991-09-03 1994-07-19 Brooks Paul F Simplified steering mechanism for skateboards and the like
US5342071A (en) * 1993-05-06 1994-08-30 Mike Soo In-line roller skate brake assembly

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2766382A1 (fr) * 1997-07-23 1999-01-29 Bernard Jonas Planche a roulettes tout terrain
EP1213043A1 (fr) * 2000-12-06 2002-06-12 Wolfram Gorisch Appareil à roulettes dirigé par inclinasion
US7306240B2 (en) 2003-01-17 2007-12-11 Shane Chen Turnable wheeled skate
DE102007031237A1 (de) 2007-07-05 2009-01-08 Gorisch, Wolfram, Dr. Kippwinkel-gelenktes Rollgerät mit versetzten Rollen
DE102007031237B4 (de) * 2007-07-05 2009-05-07 Gorisch, Wolfram, Dr. Kippwinkel-gelenktes Rollgerät mit versetzten Rollen
FR2931395A1 (fr) * 2008-05-21 2009-11-27 Olivier Antenat Dispositif de suspension d'un mobile
WO2009150364A1 (fr) * 2008-05-21 2009-12-17 Olivier Antenat Dispositif de suspension d'un mobile
EP2501444A1 (fr) * 2009-11-16 2012-09-26 Triskate Technology, LLC. Patin à roulettes et blocs de roues pour celui-ci
EP2501444A4 (fr) * 2009-11-16 2014-11-19 Cardiff Sport Technologies Llc Patin à roulettes et blocs de roues pour celui-ci

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