Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 8096563 | Recreation device for sliding downhill on a surface A recreation device, used for sliding downhill on a surface, on which the rider is suspended above the surface, either in a generally horizontal position—face up or face down—or in a reclined position, thereby providing the rider with a unique experience or sens... | 01/17/2012 |
| 7264250 | Snowmobile stabilizer A stabilizer comprising three parallel wear blades each of which is made to remain sharpened over a long period of time. The side blades may contain holes to divert the snow and to add roughness when engaging into a ski path, while a rectangular central part runner ... | 09/04/2007 |
| 7165775 | Sled with a center tie-down A sled includes a hull having opposed first and second side walls. First and second strap anchors are mounted on the respective first and second side walls. A center strap anchor is disposed between the first and second strap anchors. ... | 01/23/2007 |
| 6905128 | Maneuverable and brakeable high performance snow sled A maneuverable, brakeable, roll resistant high performance snow sled suitable for use on downwardly sloping terrain. The preferred embodiment of the sled embodies a tandem, mirror image, in-line suspension and shock absorbing system connecting the main frame member ... | 06/14/2005 |
| 6523835 | Blade for an ice skate The present invention teaches a runner or blade for an ice skate having a novel configuration and structure, such as a blade having greater width at the edge at both the anterior end and posterior end relative to the middle, or alternately, a blade having... | 02/25/2003 |
| 6520512 | Snow vehicle stabilizer A stabilizer made of metal or plastic, fit on snow vehicle ski. It comprises a vertical fin forming a wing of a U-shaped section of a length sufficient to cover the bearing surface of the ski. A central channel is placed longitudinally in the centre of th... | 02/18/2003 |
| 5752709 | Triple ski system and linkage therefor Ski apparatus with two outer skis and a third ski, located between the two outer skis, coupled to the outer skis by four cranks, connected as a front pair and a rear pair. Each crank has a gear on one end and a free end. The free end of a crank is attache... | 05/19/1998 |
| 5575490 | Ice fishing sled and caddy A sled apparatus for transportation and storage of equipment has a lower housing. There is an equipment chamber in the lower housing. A first runner and a second runner are connected to the lower housing. These runners are preferably an integral part of t... | 11/19/1996 |
| 4928983 | Snow glider A snow glider with a body shell having a convex bottom with reference to the surface. At least two skids are attached along the bottom so that according to the inclination angle of the snow glider the available skids in contact with the snow steer the sno... | 05/29/1990 |
| 4896893 | Ice skateboards An ice skateboard has front and rear trucks with horizontal axles attached thereto for pivotal steering movement of the axles in response to tilting of the skateboard. Each of the horizontal axles has a pair of runner blades attached thereto. An auxiliary... | 01/30/1990 |
| 4653763 | One runner ski sled with outriggers A sled having a ski as a main runner and a pair of side or outrigger skis for stability. An arched tubular frame located fore and aft connects cross-wise the main runner to each of the side runners and supports a wooden deck at the top. A pair of arched s... | 03/31/1987 |
| 4440408 | Recreational sleigh A recreational device for use on snow or grass-covered slopes consisting of a ski having a circular seat mounted thereon with at least one handle, preferably a pair of diametrically opposed handles, projecting radially from said seat or below said seat. A... | 04/03/1984 |
| 4260036 | Powered ski An improved ski device which incorporates a power unit for providing forward thrust and which is capable of operation over water, snow, ice, artificial surfaces, or the like. In one embodiment, the unit utilizes an upright chassis which is articulated to ... | 04/07/1981 |
| 4193609 | Ski device A new and improved ski device capable of operation over water, snow, ice, artificial surfaces, or the like. The unit utilizes a seat design articulated to a single runner in a fashion analogous to the spacing of foot bindings in an ordinary ski. The unit ... | 03/18/1980 |
| 4114912 | Sled apparatus An improved sled apparatus of the ski-type having a main ski bearing a seat and a foot retainer thereon, and steerable upon flanking outrigger auxiliary skis by means of a preferably unitary handlebar assembly operatively interconnected to a pivotable sta... | 09/19/1978 |
| 4082304 | Ski-sled A ski-sled including an elongated ski-like runner that carries a seat and is equipped with control runners extending from the forward end thereof. The control runners are pivotably movable relative to the ski-like runner for steering purposes and are hing... | 04/04/1978 |
