Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 4943250 | Articulated hydrofoil oar An oar and oarlock arrangement comprising, in combination: a handle loom and a structurally separate blade loom having a hydrofoil blade mounted to its outermost end, the handle loom and blade loom being hinged for sweep action about a rockable oarlock. T... | 07/24/1990 |
| 4926772 | Emergency paddle kit An emergency paddle kit for sailboards is disclosed. The kit comprises at least one shaft which has a paddle blade attached to one end, which shaft is releasably attached to the boom of a sailboard. When the sail of the sailboard is not used to propel the... | 05/22/1990 |
| 4897062 | Water walker's propulsion pole The subject pole is used to help propel a person on ski floats or water walkers. Each pole comprises a shaft with a hand grip at the top end and, in order from the bottom end: a small float, a propulsion apparatus and a larger float. The floats are bodies... | 01/30/1990 |
| 4867718 | Hydrofoil oar A rowing apparatus comprising, in combination: a boat having a hull with fore and aft ends and having an outrigger projecting laterally outwards from each side of the hull and at least two oars located one on each side of the hull, each of the oars compri... | 09/19/1989 |
| 4867719 | Hydrofoil oar with movable outrigger A rowing apparatus comprising, in combination: a boat having a hull with fore and aft ends and an outrigger frame movably mounted onto the hull and having opposite ends projecting laterally outwards from each side of the hull. The apparatus further includ... | 09/19/1989 |
| 4865571 | Hand-held ice grab and water paddle A flat rigid rectangular plate has four corners bent down to form rigid V-shaped points to grip on an ice surface. The plate is larger than an adult hand and serves as a hand-held paddle in water. A longer spike or triangular point extends away from the p... | 09/12/1989 |
| 4842482 | Paddle construction A high-efficiency paddle construction having a blade and a stem extending therefrom, and wherein the blade has a pair of opposite, longitudinally extending edges, with flanges extending along the edges. The arrangement is such that there is provided resis... | 06/27/1989 |
| 4832631 | Swimming aid A manually powered pair of crank operated flat paddles used by a swimmer combines a rotary and paddling motion. One paddle is rotated to engage the water while the opposite paddle is disengaged and provides flotation only. The opposite paddle is then rota... | 05/23/1989 |
| 4820216 | Adjustable kayak paddle An adjustable paddle (A) is disclosed which includes an adjustable joint (C) which allows for two handle sections (14, 16) to be fitted together in a desired axial and rotational positions to fix the length of paddle (A) and the relative blade angle setti... | 04/11/1989 |
| 4810217 | Propulsion device for small boats A propulsion device for small craft having a shaft, a flexible bag on the shaft at one end, the bag having a larger end which is open and a smaller end with a water flow opening, a cross member extending transversely of the shaft and across the larger bag... | 03/07/1989 |
| 4804345 | Equipment for towless skiing on water surface Equipment for towless skiing on water surface includes a pair of propulsion sticks having buoyant members at one end and handles at the other end. The buoyant members provide increased thrust against the hydrodynamic resistance of the water, and the shape... | 02/14/1989 |
| 4800832 | Recreational boat A knock-down boat assembly comprises bow, mid and stern water-tight transverse hull sections, each having fore and aft ends, concave side walls and a transverse bulkhead at the aft end of the bow section, at the fore and aft ends of the mid section and at... | 01/31/1989 |
| 4776821 | Forwards facing hydrofoil oar The present invention improves the efficiency of high performance rowing in shells. The oarsman faces forwards and uses "L" shaped oars with hydrofoil blades. The conventional handle loom section ends at the "L" at the outboard end of the usual outrigger.... | 10/11/1988 |
| 4737126 | Paddle A blade (9) for a paddle intended for paddling a canoe or corresponding water-craft, which paddle comprises a paddle shaft and a blade arranged on at least one end of the paddle shaft and intended to be inserted fully or partially into the water with the ... | 04/12/1988 |
| 4701142 | Paddle handle accessory A handle for attachment to the shaft of a paddle to improve the efficiency and comfort of paddling. The handle having a grip portion and spaced outwardly extending arms on the grip portion. The arms are coupled to the paddle shaft so that the handle is sw... | 10/20/1987 |
| 4673361 | Kayak/canoe paddle An improved paddle for canoe or kayak recreational or competitive paddling incorporates crossbar structure formed such that when incorporated either with a single blade canoe paddle or with a double blade kayak paddle both hands grip available crossbars w... | 06/16/1987 |
| 4664637 | Oar The oar disclosed herein is re-enforce by a stay which is anchored at both ends of the oar shaft and is supported near the oar lock location by a brace. The two points, where the stay emanates from the oar shaft, lie in the same plane as a set of points a... | 05/12/1987 |
| 4650433 | Water ski with propulsion guide poles A single water ski and propulsion pole combination makes use of a buoyant hull of sufficient width to accommodate both feet of the user. Two buoyant poles are included, each adapted to be grasped at one end. On the opposite end of each pole is a propulsio... | 03/17/1987 |
| 4622017 | Oar with pivotal blades An oar or paddle comprising a shaft having two parallel grooves of circular cross-section extending throughout its length, each groove pivotally supporting a blade. The grooves have a peripheral extent which permits the blades to pivot between a position ... | 11/11/1986 |
| 4610633 | Kayak paddle A wood kayak or canoe paddle having a rubber-like shock-absorbing abrasion-resistant flexible strong strip of urethane rubber adhered to the tip of each blade, and preferably extending also along the opposite edges of the blade, to strengthen the blade an... | 09/09/1986 |
| 4578038 | Elongated propelling means for manually moving a sailing craft over the water surface A thrust device for manually advancing a water craft over a water surface includes a stick-like grip forming part of a stick carrying a thrust apparatus made of a flexible, substantially circular foil provided with radial stiffening members attached at eq... | 03/25/1986 |
| 4527984 | Water skis and oaring sticks The invention consists of a pair of water oaring sticks to be used in conjunction with flotation skis to be secured to the feet of a user, in order to facilitate the movement of the latter over aqueous surfaces. Each stick comprises a fixed or telescopica... | 07/09/1985 |
| 4493663 | One-handed paddle A one-handed paddle having a blade portion, a hand-grip portion and an arm brace portion. The arm brace portion has a resilient member which releasably grips the forearm of a user to maintain the arm brace portion in contact with the forearm of the user d... | 01/15/1985 |
| 4303402 | Paddle A strong, lightweight paddle for manually propelling a water craft with increased stroke efficiency comprises a cupped-shaped blade formed of a foam injected plastic, the blade being angularly displaced from the shaft of the paddle, the shaft is hollow an... | 12/01/1981 |
| 4302194 | Combined aquatic support and propulsion device A combined propulsion and support device for use by a swimmer when the device is in a first operating position, but with the device being quickly and easily transformed to a second position in which it is more compact and occupies a minimum of space when ... | 11/24/1981 |
| 4233925 | Paddles for boats A plastic paddle of unitary construction defining a hand grip with a wrist engageable portion at one end, and a blade portion at the opposite end, which blade has a tapered cross sectional shape with flanges defined along its marginal edges to achieve max... | 11/18/1980 |
| 4133285 | Boat paddle A paddle for a boat such as a canoe having a blade and a handle connected by an intermediate portion, all on a common axis, is formed with a modified T-shaped or contoured handle comprising a cross member at the end of the intermediate portion, the cross ... | 01/09/1979 |
| 4098219 | Ski propulsion paddles Manually operable propulsion paddles, for use in water skiing or boating are provided with a lower water-engaging portion, an upwardly-extending shaft and a handle at the upper portion of the shaft. The water engaging portion comprises a pair of plates hi... | 07/04/1978 |
| 4068610 | Ski propulsion poles Manually operable ski propulsion poles or paddles, for use in water skiing or snow skiing or the like, are provided with a lower medium-engaging portion, an upwardly extending shaft, a handle at the upper portion of the shaft, and arm supporting means piv... | 01/17/1978 |
| 4061106 | Racing paddle and method of making the same An extremely light-weight racing paddle is disclosed which is formed of a very light-weight core of low structural strength surrounded by a shell formed of an extremely strong, light-weight fibrous material which supplies structural strength to the core m... | 12/06/1977 |
