WO2004026679A1 - Variable resistance water skis with variable resistance paddles - Google Patents

Variable resistance water skis with variable resistance paddles Download PDF

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Publication number
WO2004026679A1
WO2004026679A1 PCT/PL2002/000102 PL0200102W WO2004026679A1 WO 2004026679 A1 WO2004026679 A1 WO 2004026679A1 PL 0200102 W PL0200102 W PL 0200102W WO 2004026679 A1 WO2004026679 A1 WO 2004026679A1
Authority
WO
WIPO (PCT)
Prior art keywords
variable resistance
water
resistance
paddle
paddles
Prior art date
Application number
PCT/PL2002/000102
Other languages
French (fr)
Inventor
Andrzej Hedrych
Original Assignee
Andrzej Hedrych
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 Andrzej Hedrych filed Critical Andrzej Hedrych
Priority to AU2002353681A priority Critical patent/AU2002353681A1/en
Publication of WO2004026679A1 publication Critical patent/WO2004026679A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H16/00—Marine propulsion by muscle power
    • B63H16/04—Oars; Sculls; Paddles; Poles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B34/00—Vessels specially adapted for water sports or leisure; Body-supporting devices specially adapted for water sports or leisure
    • B63B34/50—Body-supporting buoyant devices, e.g. bathing boats or water cycles
    • B63B34/56—Body-supporting buoyant devices, e.g. bathing boats or water cycles for use in a standing position, e.g. water shoes, water walking devices or buoyant skis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/30—Propulsive elements directly acting on water of non-rotary type
    • B63H1/32—Flaps, pistons, or the like, reciprocating in propulsive direction

Definitions

  • variable resistance water skis are characteristic features that their bottom side (being in contact with water) during the movement of the ski on the surface of water in one direction (forward) produces a minimal resistance on the water, whereas with the change of direction to opposite (backwards) the resistance becomes a lot greater which, while alternate movement of one leg is sliding forward and the other one backward, enables pushing against the water and moving forward.
  • Fig. 1 Cross section of variable resistance water ski on the level of attachment of one of the movable plates.
  • Fig. 2 Cross section of variable resistance water ski on the level of one of the movable plates.
  • FIG. 3 Schematic figure of variable resistance water ski. Side view.
  • the arrows show the direction of movement of the ski in water.
  • Variable resistance paddle for the variable resistance water skis is in practice comparable with the role played by standard winter ski sticks. They enable pushing against water (forward movement), changing direction of movement and keeping balance. Blade of the variable resistance paddle is made of movable plates which during movement of the paddle in one direction are raised due to water resistance - in that case blade of the paddle is open and resistance in water is minimal. With the change of direction to opposite they swing back by up to 90° and assume vertical position in relation to water surface - in that case blade of the paddle is closed and resistance in water is maximum. In order to facilitate the use of the paddle its blade is of such positive buoyancy that it floats freely under water surface.
  • the movable elements of the paddle's blade are made from material of negative buoyancy and are attached horizontally on the carrying frame and the required buoyancy is achieved by attaching floats to the blade.
  • the paddle with the operation described above may be used instead of a traditional paddle, e.g. in a row-boat. Nevertheless its application is indispensable for the use of variable resistance water skis to which purpose it has been designed.
  • J - stopper of movable plate opening - its purpose is to hold the plates in such position that during the movement of the paddle in the opposite direction they close in the same required direction thus making solid whole
  • Fig. 6 Schematic figure of variable resistance paddles operation for variable resistance skis use.
  • Fig. 7 Schematic figure of variable resistance paddles for a row-boat use (without floats).
  • variable resistance skis and paddles described above were constructed in accordance with the shown figures. They proved to function well in practice.
  • the variable resistance water skis ought to be characterized by displacement and dimensions adjusted to the weight and height of the person using them.
  • the assumed application of the variable resistance skis with variable resistance paddles is recreation and sport, opportunity of summer practice for winter skiers and occupational therapy.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Sewage (AREA)

Abstract

Variable resistance water skis are characterized by minimum resistance of their bottom side in water during movement in one direction and maximum resistance in water during movement in the opposite direction (Figure 3). The blade of variable resistance paddle characterized by minimum resistance of their bottom side in water during movement in one direction and maximum resistance in water during movement in the opposite direction (Figure 5).

Description

VARIABLE RESISTANCE WATER SKIS WITH VARIABLE RESISTANCE PADDLES
The characteristic feature of variable resistance water skis is that their bottom side (being in contact with water) during the movement of the ski on the surface of water in one direction (forward) produces a minimal resistance on the water, whereas with the change of direction to opposite (backwards) the resistance becomes a lot greater which, while alternate movement of one leg is sliding forward and the other one backward, enables pushing against the water and moving forward. In the model design it was achieved by installing on the bottom side of each ski a series a row of transverse plates, in relation to the axis of the ski, made from material of negative buoyancy, which with the forward movement of the ski and resistance caused by water close (minimum resistance in water), and with the change of movement to opposite and with the resistance of water they open up to 90 ° and position themselves vertically in relation to the bottom of the ski, therefore resistance grows dramatically. Description of figures.
Fig. 1. Cross section of variable resistance water ski on the level of attachment of one of the movable plates.
A - the ski
B - attachment socket for axis of movable plate
C - the axis of movable plate
D - the movable plate in the raised position - minimal resistance in water
E - stopper of movable plate opening - holds the movable plate in the vertical position in relation to the ski
Fig. 2. Cross section of variable resistance water ski on the level of one of the movable plates.
D - the movable plate in the open position (down) - resistance in water is maximum Fig. 3. Schematic figure of variable resistance water ski. Side view.
The arrows show the direction of movement of the ski in water.
D - movable plates raised during forward movement. Resistance in water is minimal.
D1 - movable plates in the open position (down) which is vertical in relation to the ski. Maximum resistance in water.
Variable resistance paddle for the variable resistance water skis is in practice comparable with the role played by standard winter ski sticks. They enable pushing against water (forward movement), changing direction of movement and keeping balance. Blade of the variable resistance paddle is made of movable plates which during movement of the paddle in one direction are raised due to water resistance - in that case blade of the paddle is open and resistance in water is minimal. With the change of direction to opposite they swing back by up to 90° and assume vertical position in relation to water surface - in that case blade of the paddle is closed and resistance in water is maximum. In order to facilitate the use of the paddle its blade is of such positive buoyancy that it floats freely under water surface. In the model design the movable elements of the paddle's blade are made from material of negative buoyancy and are attached horizontally on the carrying frame and the required buoyancy is achieved by attaching floats to the blade. The paddle with the operation described above may be used instead of a traditional paddle, e.g. in a row-boat. Nevertheless its application is indispensable for the use of variable resistance water skis to which purpose it has been designed.
Description of figures.
Fig. 4. Open blade of variable resistance paddle (movable plates raised) - minimal resistance in water.
F - frame of the paddle's blade
G - axis of the movable plate
H - movable plate
I - socket for axis of movable plate
J - stopper of movable plate opening - its purpose is to hold the plates in such position that during the movement of the paddle in the opposite direction they close in the same required direction thus making solid whole
K - closed stopper of the last plate - for the other plates this function is performed by the top edge of the next plate L - shaft of the paddle
M - active joint with a positioning blocking joining the shaft with the blade and which enables their relative positioning at the required angle
N - float of the paddle
Fig. 5. Closed blade of the variable resistance paddle (movable plates down) - maximum resistance in water.
Fig. 6. Schematic figure of variable resistance paddles operation for variable resistance skis use.
Fig. 7. Schematic figure of variable resistance paddles for a row-boat use (without floats).
The variable resistance skis and paddles described above were constructed in accordance with the shown figures. They proved to function well in practice. The variable resistance water skis ought to be characterized by displacement and dimensions adjusted to the weight and height of the person using them. The assumed application of the variable resistance skis with variable resistance paddles is recreation and sport, opportunity of summer practice for winter skiers and occupational therapy.

Claims

Significant by the fact that the resistance of the bottom side of the variable resistance water skis during the movement in one direction on the water surface is minimum whereas with the change of direction to opposite it is maximum.
Significant by the fact that the resistance of variable resistance paddle in water during the movement in one direction is minimum whereas with the change of direction to opposite it is maximum.
PCT/PL2002/000102 2002-09-17 2002-12-05 Variable resistance water skis with variable resistance paddles WO2004026679A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002353681A AU2002353681A1 (en) 2002-09-17 2002-12-05 Variable resistance water skis with variable resistance paddles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL02356117A PL356117A1 (en) 2002-09-17 2002-09-17 Variable resistance water-skis equipped with variable resistance paddles
PLP.356117 2002-09-17

Publications (1)

Publication Number Publication Date
WO2004026679A1 true WO2004026679A1 (en) 2004-04-01

Family

ID=32026331

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL2002/000102 WO2004026679A1 (en) 2002-09-17 2002-12-05 Variable resistance water skis with variable resistance paddles

Country Status (3)

Country Link
AU (1) AU2002353681A1 (en)
PL (1) PL356117A1 (en)
WO (1) WO2004026679A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2927060A1 (en) * 2008-01-31 2009-08-07 Christophe Rouanet Aquatic propulsion device for boat, has maintaining base joining walls and forming gripping bar or handle for receiving heads of device at its ends, where device is set in rowing action by driving force of individuals to pass between walls
WO2012066193A2 (en) 2010-11-09 2012-05-24 Christophe Rouanet Hydrodynamic oar
FR2980450A1 (en) * 2011-09-23 2013-03-29 Jean Claude Roumieux Device for traveling on e.g. sea water by walking during sports, has identical surfboards independently provided with immersed mechanism for preventing backward movement of surfboard and slid forward alternately by advance movement of foot

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1029093A (en) * 1950-12-05 1953-05-29 New water skis powered by user action alone
GB1386952A (en) * 1971-08-10 1975-03-12 Gibson C M Water shoes snow skis and snow shoes
DE19857430A1 (en) * 1998-12-12 2000-06-15 Harald Schlorff Water ski board is a one-piece float for each foot with twin catamaran runners on the under surface for balance and stability and a lever-operated flap system for manual propulsion
US20010053642A1 (en) * 2000-06-15 2001-12-20 Yu-Chao Chao Water and land walking device
US20020115364A1 (en) * 2001-02-20 2002-08-22 Judson Ko Self propelled water ski

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1029093A (en) * 1950-12-05 1953-05-29 New water skis powered by user action alone
GB1386952A (en) * 1971-08-10 1975-03-12 Gibson C M Water shoes snow skis and snow shoes
DE19857430A1 (en) * 1998-12-12 2000-06-15 Harald Schlorff Water ski board is a one-piece float for each foot with twin catamaran runners on the under surface for balance and stability and a lever-operated flap system for manual propulsion
US20010053642A1 (en) * 2000-06-15 2001-12-20 Yu-Chao Chao Water and land walking device
US20020115364A1 (en) * 2001-02-20 2002-08-22 Judson Ko Self propelled water ski

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2927060A1 (en) * 2008-01-31 2009-08-07 Christophe Rouanet Aquatic propulsion device for boat, has maintaining base joining walls and forming gripping bar or handle for receiving heads of device at its ends, where device is set in rowing action by driving force of individuals to pass between walls
WO2012066193A2 (en) 2010-11-09 2012-05-24 Christophe Rouanet Hydrodynamic oar
FR2980450A1 (en) * 2011-09-23 2013-03-29 Jean Claude Roumieux Device for traveling on e.g. sea water by walking during sports, has identical surfboards independently provided with immersed mechanism for preventing backward movement of surfboard and slid forward alternately by advance movement of foot

Also Published As

Publication number Publication date
PL356117A1 (en) 2004-03-22
AU2002353681A1 (en) 2004-04-08

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