WO2023017289A1 - Dispositif rotatif pour une pagaie et pagaie comprenant un tel dispositif rotatif - Google Patents

Dispositif rotatif pour une pagaie et pagaie comprenant un tel dispositif rotatif Download PDF

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Publication number
WO2023017289A1
WO2023017289A1 PCT/HU2022/050061 HU2022050061W WO2023017289A1 WO 2023017289 A1 WO2023017289 A1 WO 2023017289A1 HU 2022050061 W HU2022050061 W HU 2022050061W WO 2023017289 A1 WO2023017289 A1 WO 2023017289A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
rotating device
shaft
longitudinal axis
paddle
Prior art date
Application number
PCT/HU2022/050061
Other languages
English (en)
Inventor
Péter MÁTÉ
Original Assignee
Mate Peter
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 Mate Peter filed Critical Mate Peter
Priority to EP22782563.5A priority Critical patent/EP4384442A1/fr
Publication of WO2023017289A1 publication Critical patent/WO2023017289A1/fr

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/02—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • 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
    • B63H2016/043—Stop sleeves or collars for positioning oars in rowlocks, e.g. adjustable

Definitions

  • a rotating device for a paddle and a paddle comprising such a rotating device
  • the subject of the invention is a rotating device for a paddle with a shaft, which, by coupling the rotating device to the shaft of the paddle, enables the athlete to turn the shaft of the paddle between strokes more quickly and efficiently.
  • the invention also relates to a paddle with a shaft comprising such a rotating device.
  • the paddles of vehicles used for water sports have different designs.
  • paddles for kayaks have to meet the double-sided pull, i.e. , you can kayak with a double-bladed paddle.
  • paddles for canoes must meet the single-sided pull, so they are designed with one blade and one grip.
  • the two blades of the paddle are rotated relative to each other at a rotation angle of approximately 40°-90°, according to the athlete's technique.
  • the blade is placed in the correct position for the stroke by one hand (the ’rotating hand') holding the shaft of the paddle while the other hand is used to turn the shaft of the paddle so that the athlete reduces the grip on the shaft of the paddle to such an extent that the rotating hand can just turn the shaft of the paddle at the required angle.
  • This process is repeated continuously throughout the kayaking session for each stroke, resulting in a minimal time difference before and after each stroke and a different load on the forearms because of the asymmetric movement.
  • US patent US5851 132 describes an improved kayak paddle for recreational or competitive paddling having handles mounted perpendicular to the shaft or shafts, which handles rotate on the shafts during use to reduce twisting of the wrist and other joints of the athlete and improve efficiency and comfort.
  • the shape of the paddles is such that water falls off the blades of the paddles and does not run down the shaft to wet the athlete's hands.
  • US patent US2001053641 also describes a paddle for use in a kayak, canoe or similar craft.
  • the paddle is provided with a rotatable hand grip in the form of a sleeve, which sleeve is rotatable about the shaft of the paddle.
  • the rotatable handle is provided with an axially oriented securing means at a predetermined location along the length of the shaft.
  • the shaft of the paddle is provided with a rotating device comprising a locking element adapted to move radially to the longitudinal axis of the shaft between a locking position and a release position, not only can a faster and more efficient power transmission and technical movement be achieved during the turning of the blades, but also the blade can be held at the correct rotation angle during the stroke.
  • the blades can be automatically locked at the correct angle, as the locking of the rotor is activated by the forces generated by the pulling action of the paddle during use.
  • the aim of the invention is to create a rotation device that is free from the disadvantages of prior art solutions, i.e., that allows easy and fast rotation of the paddle between strokes, while blocking the rotation during the stroke.
  • the invention also aims at providing a paddle free from the disadvantages of prior art solutions, i.e., comprising a rotating device according to the invention.
  • the problem is solved by means of a rotating device according to claim 1 .
  • the task is solved by providing a rotating device which is connectable to the shaft and which, when connected, surrounds a longitudinal axis of the shaft and can rotate about the longitudinal axis, and is fixed against displacement along the longitudinal axis, said rotor being provided with a locking element adapted to move radially to the longitudinal axis between a locking position and a release position, said locking element is adapted to prevent rotation of the rotor about the longitudinal axis in the locking position and to allow rotation of the rotor about the longitudinal axis in the release position.
  • Figure 1 is a schematic perspective view of an exemplary embodiment of a rotating device according to the invention, mounted in a paddle;
  • Figure 2 is a closer, schematic perspective view of the rotating device according to Figure 1 ;
  • Figure 3 is an exploded perspective view of the rotating device illustrated in Figure 2;
  • Figure 4 is a schematic perspective view of a rotor of the rotating device according to Figure 1 ;
  • Figure 5 is a B-B view of the rotor of Figure 4.
  • Figure 6 is a D-D sectional view of the rotor of Figure 5;
  • Fig. 7 is an exploded view of an exemplary embodiment of a paddle comprising a rotating device and a connecting tube according to Fig. 2;
  • Figure 8 is a schematic perspective view of another exemplary embodiment of a rotating device according to the invention, mounted on a paddle;
  • Figure 9 is an exploded view of the rotating device illustrated in Figure 8.
  • Figure 10 is a schematic perspective view of an exemplary embodiment of a paddle comprising a rotating device as shown in Figure 8;
  • FIG 11 is an exploded view of an exemplary embodiment of a paddle comprising a rotating device and a connecting tube as shown in Figure 8;
  • Figure 12 is an E-E sectional view as shown in Figure 8;
  • Figure 13 is a schematic perspective view of another possible embodiment of a rotor according to the invention.
  • Figure 14 is the A-A cross-sectional view of a rotor according to Figure 13;
  • Figure 15a is a schematic view of an outer member of the ring of the rotor shown in Figure 13;
  • Figure 15b is a schematic view of the inner member of the ring of the rotor shown in Figure 13.
  • FIG. 1 shows a schematic perspective view of an exemplary embodiment of a rotating device 101 according to the invention, mounted on a paddle 2.
  • paddle 2 is meant a single- or double-bladed paddle for propelling a human-powered watercraft such as a kayak, canoe, sup, boat, etc., or a handle-operated device for propelling land-based exercise machines or vehicles requiring the movement of the aforementioned sports, as is known to the skilled person.
  • the paddle 2 is configured as a kayak paddle 2, comprising two paddle blades 3,13 and straight shaft 4 having a longitudinal axis T.
  • the shaft 4 is preferably circular in cross-section and is generally made of some lightweight but strong composite material, such as carbon fibre or glass fibre.
  • the rotating device 101 comprises a cylindrical rotor 17 which can be connected to the shaft 4 and which, when connected, surrounds the longitudinal axis T of the shaft 4 and can rotate about the longitudinal axis T, but which is fixed against displacement along the longitudinal axis T.
  • the cylindrical design of the rotor 17 is understood to mean that the rotor 17 is elongated, internally hollow tubular in design and has an inner surface 29 of substantially circular cross-section.
  • the rotor 17 may be made, for example, of the same material as the shaft 4, e.g., composite material, plastic, metal, etc.
  • the axis of rotation of the rotor 17 coupled to the shaft 4 substantially coincides with the longitudinal axis T and can rotate around it.
  • Figures 2 and 3 show a closer view of the rotating device 101.
  • the rotor 17 is concentrically fitted directly onto the shaft 4 such that the diameter of the inner surface 29 of the rotor 17 is greater than the diameter of the outer surface of the shaft 4.
  • the rotor 17 turns directly around the shaft 4.
  • the rotating device 101 comprises a cylindrical connecting tube 5 guided through the interior of the cylindrical rotor 17 and having an axis substantially coincident with the axis of rotation of the rotor 17, wherein the connecting tube 5 comprises first and second ends 5a, 5b extending beyond the rotor 17 and adapted to be fixed to the shaft 4.
  • the rotor 17 is connected to the shaft 4 by the interposition of the connecting tube 5.
  • the material of the connecting tube 5 may be, for example, plastic, composite, metal, etc., similar to the material of the shaft 4, which has sufficient rigidity while preferably having a low weight.
  • the shaft 4 comprises two portions which are connected by the respective ends 5a, 5b of the connecting tube 5, for example by sliding the ends 5a, 5b and the portions of the shaft 4 into each other and gluing or fastening by fasteners. That is, the connecting tube 5 is inserted between the parts of the shaft 4, as can be seen in Figures 7 and 11.
  • the rotor 17 is concentrically mounted onto the connecting tube 5, and therefore the diameter of the inner surface 29 of the rotor 17 is selected to be larger than the diameter of the outer surface of the connecting tube 5.
  • the rotor 17 turns directly around the connecting tube 5.
  • the outer cross-section of the connecting tube 5 is smaller than the inner cross-section of the shaft 4, whereby the ends 5a, 5b slide into corresponding portions of the shaft 4. In this way, the outer surface of the rotor 17 can be made to fit into the plane of the outer surface of the shaft 4.
  • the easy rotation of the rotor 17 is provided by reducing the friction force between the rotor 17 and the shaft 4 and between the rotor 17 and the connecting tube 5.
  • the rotor 17 is coupled to the shaft 4 and the connecting tube 5 by interposition of one or more bearings, preferably one or more plain bearings, preferably arranged at both ends of the rotor 17 (not shown).
  • both the rings 16 and the shaft 4 are provided with bores 11 and the rings 16 can be secured to the shaft 4 by means of fastener 10 (e.g., threaded bolts) passing through the bore 11 .
  • fastener 10 e.g., threaded bolts
  • the connecting tube 5 also comprises bores 11 and the fasteners 10 are also passed through the connecting tube 5, as shown in Figures 7 and 11 .
  • the rings 16 do not have bores 11 and fasteners 10 passed therethrough, which would leave a trace on the shaft 4 after possible removal of the rings 16.
  • the rings 16 comprise an inner member 16a with an external thread 50a and a deformable portion 16a', and an outer member 16b with an internal thread 50b which can be screwed onto the external thread 50a of the inner member 16a, schematic views of which are shown in Figures 15a and 15b.
  • the inner member 16a is cylindrical in shape and has an internal diameter such that the inner member 16a can be fitted onto the shaft 4 in its default position.
  • the inner member 16a is preferably formed of a flexible material, such as plastic, carbon fibre or other composite material, the deformable portion 16a' being thereby formed from the material of the inner member 16a, for example by notching, as can be seen in Figure 15b.
  • the outer member 16b may also be made of, for example, plastic or carbon fibre, or even metal, as the outer member 16b need not necessarily be flexible. It is noted that the outer surface of the outer element 16b may optionally be roughened for ease of grip, as shown, for example, in Figure 15a.
  • the outer member 16b is also cylindrical in shape and is dimensioned to be fitted over the shaft 4.
  • the ring 16 is secured to the shaft 4 by screwing the outer element 16b onto the inner element 16a, while a tapered portion 16b' slides onto the deformable portion 16a'.
  • the end of the deformable portion 16a' is compressed by the tapered (conical) end of the tapered portion 16b' in the direction of the shaft 4.
  • the compressive force between the deformable portion 16a' and the shaft 4 prevents the ring 16 from moving along the longitudinal axis T.
  • the rings 16 may also be secured to the shaft 4 by other known means, such as adhesive, as will be apparent to the skilled person.
  • the rings 16 prevent displacement of the rotor 17 along the longitudinal axis T, but allow rotation about the longitudinal axis T, since there is no significant friction between the rotor 17 and the rings 16.
  • the amount of friction between the rotor 17 and the rings 16 can be further reduced by an appropriate choice of material (e.g., polymer) for the rotor 17 and the rings 16.
  • the rotor 17 is equipped with a locking element 100 adapted to move radially to the longitudinal axis T between a locking position and a release position. It is noted that, in the context of this description, the radial direction is understood to be substantially perpendicular to the longitudinal axis T.
  • the locking element 100 is configured to prevent rotation of the rotor 17 about the longitudinal axis T in the locking position and to allow rotation of the rotor 17 about the longitudinal axis T in the release position. When the rotating device 101 is connected to the shaft 4, the locking element 100 is positioned closer to the longitudinal axis T in the locking position and further away from the longitudinal axis T in the release position.
  • the rotor 17 is made of a flexible material, such as a plastic or composite material
  • the locking element 100 is configured as a flexible tongue 18 formed by notching the rotor 17 material, which can be moved in the radial direction towards the longitudinal axis T.
  • the flexible tongue 18 is delimited by a longitudinal notch 19 formed parallel to the axis of rotation of the rotor 17 and by transverse notches 49, 59 intersecting the longitudinal notch 19 and formed perpendicular thereto.
  • Figures 2 and 3 show a length L1 of the flexible tongue 18 and a length L2 of the rotor 17, where L1 ⁇ L2.
  • the notches 19, 49, 59 enable the flexible tongue 18 to move in the radial direction towards the direction of the longitudinal axis T to the locking position under the action of an appropriate force, while the flexibility of the material of the rotor 17 ensures the return of the flexible tongue 18 to its initial position, i.e. to the release position.
  • Figure 6 shows the rotor 17 and the flexible tongue 18 of the rotor 17 delimited by notches 19,49. An angle of deflection
  • the angle of deflection p must be chosen sufficiently large to allow the pulling force, generated radially to the longitudinal axis T when pulling with the paddle 2, to bring the flexible tongue 18 into the locking position, i.e., to be clamped against the outer surface of the shaft 4 and the connecting tube 5, thus securing the paddle 2 in a stable position during the pulling action.
  • a protrusion 18' is formed on the outer surface of the flexible tongue 18. Due to its ergonomic shape, the protrusion 18' fits into the palm of the user's hand, thus facilitating and stabilising the grip of the rotor 17.
  • the protrusion 18' can also be advantageously formed, for example, from the material of the flexible tongue 18, as can be seen in Figure 14.
  • the inner surface of the flexible tongue 18 facing inwardly of the cylindrical rotor 17 is configured to be non-slip, thereby providing an even more stable attachment between the flexible tongue 18 and the shaft 4 or the connecting tube 5 in the locking position.
  • the anti-slip can be achieved, for example, by roughening the inner surface of the flexible tongue 18 or by applying an anti-slip coating (e.g., rubber layer).
  • the slip prevention is provided by one or more silicone inserts 40 in the form of strips or rods fixed to the inner surface of the flexible tongue 18, arranged parallel to the longitudinal axis T.
  • the locking element 100 comprises one or more brake pads 23 arranged on the inside of the cylindrical rotor 17 arranged on the inside of the cylindrical rotor 17 and adapted to move between a locking position and a release position radially to the longitudinal axis T, a cover element 31 being arranged on the outside of the rotor 17, and one or more pins 24 extending through the rotor 17 and connecting the brake pad 23 to the cover element 31 .
  • the brake pad 23 is shown outside the rotor 17 for ease of viewing, however, this element is arranged inside the rotor 17 in its intended state.
  • Figure 12 shows a sectional view of rotor 17 and locking element 100.
  • the rotor 17 has a rectangular outer groove 22 with a flat surface 43 on the outside of the rotor 17, while the rotor 17 has an inner groove 21 on the inside of the rotor 17.
  • the outer groove 22 is dimensioned to accommodate the cover element 31 .
  • the inner groove 21 is dimensioned to allow the brake pad 23 to retract into it when the locking element 100 is in the release position, as shown in Figure 12.
  • the brake pad 23 is connected to the cover element 31 by pins 24 passing through holes 25, forming a rigid connection between them.
  • the pins 24 may be formed, for example, as part of the brake pad 23, for example, from material thereof.
  • the pins 24 may be secured in bottom holes 32 formed in the cover element 31.
  • One or more flexible elements 30, in the embodiment shown a coil spring, are arranged between the brake pad 23 and the cover element 31 to return the locking member 100 to the release position.
  • both the cover element 31 and the brake pad 23 have an elongate configuration extending along the axis of rotation of the rotor 17 and the brake pad 23 has a curved inner surface 15.
  • the curved inner surface 15 is configured to preferably follow the curve of the inner surface 29 of the rotor 17.
  • the rotor 17 has an outer surface with an oval cross-section, as observed, for example, in Figure 12.
  • this is ergonomically advantageous as it allows the rotor 17 to fit better into the palm of the user's hand.
  • the thicker section created by the oval design makes it easier to form the grooves 21 , 22.
  • the brake pad 23 In the release position of the locking element 100 shown in Figure 12, i.e., when no external force is applied to the cover element 31 , the brake pad 23 is forced into the inner groove 21 by the one or more flexible elements 30.
  • the design of the brake pad 23 is such that the inner surface 15 of the brake pad 23 is then not in contact with the outer surface of the shaft 4 or the connecting tube 5, so that no friction is created between them, and the rotor 17 is free to rotate around the shaft 4 or the connecting tube 5. If a sufficient amount of external pressure is applied to the cover element 31 during the pulling action, the cover element 31 is forced into the outer groove 22, thereby pressing the brake pad 23 against the outer surface of the shaft 4 or the connecting tube 5 through the pins 24. The locking element 100 is moved into the locking position.
  • a friction force is created between the brake pad 23 and the shaft 4 or the connecting tube 5, which prevents the rotor 17 from rotating around the shaft 4 or the connecting tube 5.
  • the strength of the friction force may be further enhanced by appropriate arrangement of the inner surface 15 of the brake pad 23 (e.g., increasing the surface roughness, applying a non-slip coating), as will be apparent to the skilled person.
  • the invention also relates to a paddle 2 comprising a rotating device 101 according to the invention.
  • the paddle 2 is configured as kayak paddle or canoe paddle.
  • the connecting tube 5 of the rotating device 101 with bore 11 , the rotor 17 formed with the flexible tongue 18 and the rings 16 with flanges 20 and bores 11 are first formed.
  • the rotating device 101 is assembled by fitting the rotor 17 onto the connecting tube 5, such that the rotor 17 is positioned between the two bores 11 of the connecting tube 5.
  • the two rings 16 are fitted onto the connecting tube 5 in such a way that they fit onto one end 5a, 5b of the rotor 17.
  • the paddle 2 is then assembled, for example as follows.
  • One part of the shaft 4 is pushed into a neck 44 of the blade 3 and fastened together in the known manner.
  • the other end of the shaft 4 is pushed onto the end of the connecting tube 5a, so that the shaft 4 abuts one of the rings 16 at the flange 20 of the ring 16, and the shaft 4 is then fastened together with the rotor 17 and the ring 16 with the fasteners 10 passed through the bores 11 (or fastened together by gluing without the 10 fasteners).
  • the other part of the shaft 4 is then pushed into a neck 45 of the blade 13 and fastened together in the usual way.
  • the connecting tube 5 of the rotating device 101 is first formed with bores 11 , as well as the rotor 17 equipped with groove 22, holes 25, flat surface 43, oval outer surface 28 and inner surface 29, and the brake pad 23 with curved inner surface 15 and flat surface 35 with pins 24. Also, the flexible elements
  • the rotating device 101 is assembled by inserting the brake pad 23 into the opening of the rotor 17 and pushing it towards the outer surface below the groove 22 of the rotor 17, so that the pins 24 of the brake pad 23 are pushed through the holes 25 formed in the groove 22.
  • the flexible elements 30, which are formed as spiral springs, are then placed on the pins 24. Further, the pins 24 are fitted into the bottom holes 32 formed in the cover element
  • the user grips the rotating device 101 with the non-rotating hand and the shaft 4 with the rotating hand.
  • the athlete does not need to release the shaft 4, because the spring-loaded braking mechanism allows the pulling force during the pulling action to cause the curved inner surface 15 of the brake pad 23 of the rotating device 101 to be tightened against the connecting tube 5 (or shaft 4), thus locking the shaft 4 at the appropriate angle.
  • the gripping action of the inner surface 15 is released, so that the rotating device 101 is free to rotate again according to the athlete's movement.

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

Abstract

La présente invention concerne un dispositif rotatif (101) pour une pagaie (2) ayant un arbre (4), le dispositif (101) comprend un rotor cylindrique (17) qui peut être relié à l'arbre (4), et qui, lorsqu'il est relié, entoure un axe longitudinal (T) de l'arbre (4) et peut tourner autour de l'axe longitudinal (T), et est fixé contre un déplacement le long de l'axe longitudinal (T), ledit rotor (17) étant pourvu d'un élément de verrouillage (100) apte à se déplacer radialement par rapport à l'axe longitudinal (T) entre une position de verrouillage et une position de libération, ledit élément de verrouillage (100) est conçu pour empêcher la rotation du rotor (17) autour de l'axe longitudinal (T) dans la position de verrouillage et pour permettre la rotation du rotor (17) autour de l'axe longitudinal (T) dans la position de libération. L'invention concerne également une pagaie comprenant un dispositif rotatif (101) selon l'invention.
PCT/HU2022/050061 2021-08-12 2022-08-08 Dispositif rotatif pour une pagaie et pagaie comprenant un tel dispositif rotatif WO2023017289A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22782563.5A EP4384442A1 (fr) 2021-08-12 2022-08-08 Dispositif rotatif pour une pagaie et pagaie comprenant un tel dispositif rotatif

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU2100296A HUP2100296A1 (hu) 2021-08-12 2021-08-12 Forgató eszköz evezõhöz, valamint evezõ, amely ilyen forgató eszközt tartalmaz
HUP2100296 2021-08-12

Publications (1)

Publication Number Publication Date
WO2023017289A1 true WO2023017289A1 (fr) 2023-02-16

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ID=89993408

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HU2022/050061 WO2023017289A1 (fr) 2021-08-12 2022-08-08 Dispositif rotatif pour une pagaie et pagaie comprenant un tel dispositif rotatif

Country Status (3)

Country Link
EP (1) EP4384442A1 (fr)
HU (1) HUP2100296A1 (fr)
WO (1) WO2023017289A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2771374A1 (fr) * 1997-11-21 1999-05-28 Aeroforme Dispositif de reglage des bras de levier d'un aviron sur la dame de nage d'une embarcation et aviron equipe d'un tel dispositif
US6328617B1 (en) * 2000-07-10 2001-12-11 Lance F. Gunnell Kayak paddle
US20010053641A1 (en) * 2000-06-06 2001-12-20 Zwaan Hendrik Johannes Paddle
US20130074288A1 (en) * 2011-09-23 2013-03-28 Paul D. Johnson Nonblistering paddle sleeve
WO2019104005A1 (fr) * 2017-11-22 2019-05-31 Retter Dale Jared Système de pagaie et procédés associés

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2771374A1 (fr) * 1997-11-21 1999-05-28 Aeroforme Dispositif de reglage des bras de levier d'un aviron sur la dame de nage d'une embarcation et aviron equipe d'un tel dispositif
US20010053641A1 (en) * 2000-06-06 2001-12-20 Zwaan Hendrik Johannes Paddle
US6328617B1 (en) * 2000-07-10 2001-12-11 Lance F. Gunnell Kayak paddle
US20130074288A1 (en) * 2011-09-23 2013-03-28 Paul D. Johnson Nonblistering paddle sleeve
WO2019104005A1 (fr) * 2017-11-22 2019-05-31 Retter Dale Jared Système de pagaie et procédés associés

Also Published As

Publication number Publication date
HUP2100296A1 (hu) 2023-02-28
EP4384442A1 (fr) 2024-06-19

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