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"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 7784833 | Roller skis A pair of roller skis each comprising at least four fixed rollers disposed in parallel on the central lower face of a long and narrow board made of an elastic material while having a left-right spacing corresponding to the width of the board and while having a front... | 08/31/2010 |
| 7677600 | Roller ski In-one aspect, a leg activated brake for a foot supporting rolling device, such as a roller ski. Roller skis generally have one wheel mounted to each end of the foot supporting frame which houses a ski binding for the skier's boot. The brake system mounts to the fra... | 03/16/2010 |
| 7441787 | Off road sports board An off road sports board provides a rider with the experience of snowboarding on dirt, gravel or other particulate materials when and where snow is not present, the sports board having an overall elongated oval configured deck having an upper surface having front an... | 10/28/2008 |
| 7314223 | Brake device and wheel assembly for skateboards A skateboard includes a deck and a plurality of trucks connected to an underside of the deck. Each truck includes two shafts and two wheels are rotatably connected to the two shafts. At least one active device is connected to a top of the deck and controlled by user... | 01/01/2008 |
| 7240908 | Pogo-ski This invention relates to recreational equipment for use on a sliding surface, such as skis, snowboards, or other equipment for use by a person such as a skier, snowboarder or water-skier. This invention provides a pogo-ski comprising a ski and a post thereon which ... | 07/10/2007 |
| 7239505 | Direct hinge for optimizing conversion An electronic device that has a body portion having an internal track, a display portion having a follower member that runs along the internal track and a support arm pivotally coupled to the body portion and to the display portion and enabling the display portion t... | 07/03/2007 |
| 7226063 | All-terrain board An all-terrain board comprises an elongate deck structure 10 having an upper surface on which front and rear axle assemblies 13,14 are mounted, such that the deck structure 10 extends under the axis of wheel rotation. The rear end 12 of t... | 06/05/2007 |
| 7213823 | Two-wheeled riding-board apparatus This novel all-terrain, two-wheeled, riding-board provides a safe operating sport-ride to the user. Two large diameter wheels, one fore and one aft, are provided to improve the safety of this novel riding-board. Each wheel has a resilient elastomeric pneumatic tire ... | 05/08/2007 |
| 7178814 | Sport board A sport board and a shock absorption system therefor, includes a glide board used in snow and aquatic sports or a roller or skate board, a rocker platform mounted in a seesaw fashion atop the sport board, whereupon opposite ends of the rocker platform may alternatel... | 02/20/2007 |
| 7175187 | Wheeled skate with step-in binding and brakes The present invention teaches an apparatus and method for removably securing an article of footwear suitable for walking, running, or bicycling to a wheeled skate. Further, the present invention also teaches a brake device for use with a wheeled skate. In addition, ... | 02/13/2007 |
| 7172205 | Two-wheeled riding-board apparatus This novel all-terrain, two-wheeled, riding-board provides a safe operating sport-ride to the user. Two large diameter wheels, one fore and one aft, are provided to improve the safety of this novel riding-board. Each wheel has a resilient elastomeric pneumatic tire ... | 02/06/2007 |
| 7165774 | External wheeled heeling apparatus and method An external wheeled heeling apparatus for walking and running and transitioning to rolling on a surface is provided. The apparatus includes a sole having a forefoot, an arch and a heel portion provided with a first side of the heel portion and a second side of the h... | 01/23/2007 |
| 7165773 | Heeling apparatus and method A heeling apparatus includes a shoe with a unique feature in the heel that allows one to walk, run, or roll seamlessly. The appearance is that of normal footwear because of the covert wheel assembly. The stealth wheel in the heel gives one the ability to roll or sli... | 01/23/2007 |
| 7159891 | All-terrain ski An all-terrain ski upon which various cross-country skiing techniques can be used by having a sliding member (2) slide over a base member (1) to simulate gliding on snow. The sliding member is held down by medium washers (6) and uses wheel and b... | 01/09/2007 |
| 7147235 | Wheeled footboard sport conveyance A steerable wheeled sport conveyance is disclosed employing a unique diamond shaped footprint especially adapted for riding at relatively high speeds over various types of terrain. A first set of singular in-line steering wheels are rotatably mounted on the opposing... | 12/12/2006 |
| 7093839 | Hockey stop multi-line roller skate and wheels for use therewith A wheel with an asymmetrical cross-section for use with a roller skate. The wheel also has a tread portion that can be easily and inexpensively replaced. An apparatus for multi-line roller skates that has two or three lines of wheels. The wheels in the center line h... | 08/22/2006 |
| 7073799 | Asymmetrically steering rolling device The two skates steered by leaning sideways normally curve along circles of similar curvature. As the two circles are offset by the legs' distance they intersect. In order to avoid this disadvantage it is desirable that the outer leg's curved track has a larger radiu... | 07/11/2006 |
| 7063335 | In-line roller skate An in-line roller skate is disclosed to include a frame with a curved lower portion, which supports a point stop at the front end followed by a ball support, a string of rotating rollers and a tail ball support. The point stop is preferably another roller fixed in p... | 06/20/2006 |
| 7063336 | External wheeled heeling apparatus and method An external wheeled heeling apparatus for walking and running and transitioning to rolling on a surface is provided. The apparatus includes a sole having a forefoot, an arch and a heel portion provided with a first side of the heel portion and a second side of the h... | 06/20/2006 |
| 7059613 | Personal transportation device for supporting a user's foot having multiple transportation attachments A personal transport device including a transportation attachment, a foot platform situated above the transportation attachment and at least one fastener connecting the foot platform to the transportation attachment. The foot platform has two parallel extending surf... | 06/13/2006 |
| 7044486 | Skateboard with suspension system A skateboard includes a board having a tip portion and a tail portion. A substantially U-shaped first aperture is formed in the tip portion, with an open end of the first aperture opening toward a central portion of the board. A substantially U-shaped second apertur... | 05/16/2006 |
| 7040638 | Occupant-propelled fluid powered rotary device, truck, wheeled platform, or vehicle An occupant propelled device having at least one hydraulic cylinder, a platform and a housing. The at least one hydraulic cylinder has at least two chambers in fluid communication. The platform is attachable to the at least one hydraulic cylinder, such that upon mov... | 05/09/2006 |
| 7011317 | Cart wheel with bearing components A wheel assembly for a material handling cart includes a wheel hub having first and second openings in first and second hub faces, each concentric with and extending along a central axis of the wheel hub. First and second ball bearings are located in the openings. I... | 03/14/2006 |
| 7000930 | Tandem-wheeled riding device A tandem-wheeled riding device includes first and second riding wheel assemblies secured to a bottom surface of a platform for supporting a rider. At least one of the riding wheel assemblies is swivelly coupled to the platform to provide aggressive turning agility t... | 02/21/2006 |
| 6979003 | Heeling apparatus and method A heeling apparatus includes a shoe with a unique feature in the heel that allows one to walk, run, or roll seamlessly. The appearance is that of normal footwear because of the covert wheel assembly. The stealth wheel in the heel gives one the ability to roll or sli... | 12/27/2005 |
| 6957830 | In-line skate frame protector Various structures designed to protect an in-line skate frame from direct impact with damaging and/or abrasive surfaces are disclosed. Such protective structures mount to the skate frame and may be manufactured from various materials, including metals, plastics, com... | 10/25/2005 |
| 6910698 | Skateboards Skateboards that incorporate a curved or arched board with wheel trucks and a cross member that may be repositioned on the board, with the board either in an arched upward or arched downward orientation. The cross member may have projections on its underside for loc... | 06/28/2005 |
| 6848750 | Generation of in-line skates and skate-boards with safety “edging friction control™” The frame of an in-line skate (FIG. 8B) supports a wheel (10), allowing a skater to effectively slow down and stop, using an athletic stance that skiers on snow and ice skaters on ice use. The wheel (10) has a hub (20A), allowing a wheel to rota... | 02/01/2005 |
| 6698776 | Skateboard with simulated snowboard response A skateboard for use on a hard surface, configured to simulate the response of a snowboard, has a support platform to which sets of wheels are mounted. The wheels have successively decreasing diameters mounted on a common axle. The wheels of successively ... | 03/02/2004 |
| 6676138 | Roller skate A shoe-plate, adapted to hold a boot of a user, is pivotally mounted on the middle portion of an elongated frame. The frame has one or two rear wheels and a fork pivoted on its front portion around a vertical axis, and supporting a front wheel. Steering s... | 01/13/2004 |
| 6568695 | All terrain riding assembly having braking capabilities An all-terrain riding assembly comprised of a body member, including a supporting surface for feet of the user disposed between a front housing member having a rotatably mounted roller member and a rear housing member having a rotatably mounted, cylindric... | 05/27/2003 |
| 6543769 | Snowboard apparatus A simulator for snowboarding, skateboarding, water skiing and the like includes a substantially flat board having a support which permits three degrees of freedom of motion. The support can include a convex body which, in combination with a thrust receivi... | 04/08/2003 |
| 6435558 | Roller ski board A roller ski board similar to an ordinary snow ski board having a board body with bending elasticity and repellant property, and having at least one of single roller at its central portion and with or without smaller twin rollers at its front and rear edg... | 08/20/2002 |
| 6375204 | Pitching skate board A skate board has a platform, at least one supporting frame integrally formed on a bottom surface of the platform and extending parallel to a longitudinal direction of the platform, and a plurality of wheel trucks fixed with the supporting frame. At least... | 04/23/2002 |
| 6254113 | All terrain riding assembly These and other objects of the present invention are achieved by an all-terrain riding assembly comprised of a body member, including a supporting surface for feet of the user disposed between a front housing member having a rotatably mounted roller membe... | 07/03/2001 |
| 6241264 | Steerable wheel assembly with damping and centering force mechanism for an in-line skate or roller ski A steerable wheel assembly for an in-line skate or roller ski comprises a hollow or dish-shaped wheel (11), a wheel bearing (13), and a wheel support (14) connecting the wheel (11) to a steering pivot (16) which is substantially disposed at a distance mea... | 06/05/2001 |
| 6237960 | Roller-type skiing device for negotiating a slope A roller-type skiing device, in particular a roller ski or a roller skiboard, includes a chassis defining a longitudinal axis and having an underside bounded by an envelope. Supported by the chassis is at least one row with a plurality of wheels which are... | 05/29/2001 |
| 6231483 | Sliding exercise apparatus and recreational device A sliding exercise apparatus used as a recreational device. The device includes a sport board housed within a carrying case. The carrying case has at least a low friction and board protective bottom surface to facilitate sliding the apparatus upon a suita... | 05/15/2001 |
| 6209894 | Summer sled A sled which will allow the user to experience the joy of sledding when there is no snow on the ground. The sled has wheel racks which are attached to the bottom of the base of the sled, and a plurality of oval wheels are attached to the wheel rack, and t... | 04/03/2001 |
| 6082768 | Roller ski In one aspect, a roller ski is provided that includes a foot-supporting enclosure that enables the ski to be used without ski boots or ski bindings. In another aspect, a roller ski is provided that includes a cuff-actuated brake.... | 07/04/2000 |
