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| Number | Title | Issue Date |
| 7669862 | Foldable spider wheel for ascending and descending stairs A collapsible spider wheel assembly on a towing device enables storage of the device into a standard rectangular space. Once collapsed, the collapsible spider assembly is protected within the body of the towing device. Furthermore, actuation of the folding and unfol... | 03/02/2010 |
| 7438145 | Vehicle adaptable to various terrains A vehicle is adaptable to various terrains. The vehicle includes a frame and two rolling sets connected to the frame. Each of the rolling sets includes two legs pivotally connected to the frame, two casters, a pin and a wheel. Each of the legs defines a slot. Each o... | 10/21/2008 |
| 7396023 | Driving system for passing fly-over obstacles by invalid chair A driving system allows an invalid chair having a seating structure, wheels on both sides of the seating structure and at least one front stabilizing wheel, to pass obstacles. The driving system has arms secured to both sides of the seating structure and on which sh... | 07/08/2008 |
| 7367581 | Baby stroller frame with seat direction changing mechanism A baby stroller frame with a seat direction changing mechanism comprising a wheeled support frame, a seat support, a handle bar and a releasing mechanism. The wheeled support frame comprises a front leg, a rear leg and wheel sets. The upper portion of the wheeled su... | 05/06/2008 |
| 7318628 | Multiple directional wheel A multiple directional wheel includes a frame having a central hub rotatable about a main axis, a plurality of roller supports radially spaced from the central hub, and a plurality of rollers evenly spaced around the circumference of the wheel and rotatably mounted ... | 01/15/2008 |
| 7270334 | Wheel assemblies for use with load bearing platforms A wheel assembly for supporting a load bearing platform includes a primary wheel and at least four secondary wheels that are of equal size. The primary wheel includes at least one planar member having an even number of axles at fixed locations extending perpendicula... | 09/18/2007 |
| 7249640 | Highly mobile robots that run and jump The present invention relates to novel, highly mobile small robots called “Mini-WHEGS™” that can run and jump. They are derived from our larger WHEGS™(“wheel-like lecis”) series of robots, which benefit from abstracted cockroach locomotion principles. Pa... | 07/31/2007 |
| 7188845 | Combined wagon and associated brake assembly A wagon and brake assembly includes a wagon including a platform having a top surface, a handle section attached to a proximal platform end, and sides protruding upwardly from the platform. The platform is provided with a bore that is intercalated between the platfo... | 03/13/2007 |
| 7152882 | Mobile carriage The invention provides a mobile carriage which is adapted to shift the center of gravity efficiently by utilizing the weight of wheel rotating means, power source means and control means to thereby increase the weight of a weight portion and reduce the increase in t... | 12/26/2006 |
| 7044481 | Wheel assemblies for use with load bearing platforms A wheel assembly for supporting a load bearing platform includes a primary wheel and at least four secondary wheels that are of equal size. The primary wheel includes at least one planar member having an even number of axles at fixed locations extending perpendicula... | 05/16/2006 |
| 7036185 | Arrangement in a wheel lifting mechanism The present invention relates to an arrangement in a wheel lifting mechanism designed to lift at least one wheel (1) running on an underlying surface so that it is capable of negotiating an obstacle (h) rising above the underlying surface. The arrangement com... | 05/02/2006 |
| 6926287 | Stroller assembly A stroller assembly includes a seat and a frame attached to the seat. A rear axle and a front axle is each mounted on the frame. A plurality of back wheels is rotatably attached to the rear axle. Each of a pair of hubs is rotatably coupled to one of a pair of free e... | 08/09/2005 |
| 6923475 | ATV trailer with fully-rotatable suspension An ATV trailer with fully-rotatable suspension is provided. The ATV trailer is formed of frame members fabricated of square, metal tubing and welded together to form a framework of rails. A downwardly sloping tongue terminates into a ball hitch coupler being mountab... | 08/02/2005 |
| 6907945 | Wheel chair Disclosed is a wheel chair capable of going over an obstacle or ascending or descending a stair. The wheel chair comprises a wheel frame; an actuator coupled to the wheel frame; a power generating unit coupled to the actuator; a first transmission having a sun gear ... | 06/21/2005 |
| 6793026 | Wall-climbing robot A wall-climbing robot or mobility platform able to ascend and descend various horizontal and vertical surfaces having a chassis, a rotor rotatable with respect to the chassis, one or more prominences on the rotor, and means for adhering to a surface attached to the ... | 09/21/2004 |
| 6742787 | ATV trailer This device is a trailer hitched to an atv or off road vehicle to haul cargo over an uneven or rough terrain. The trailer has a frame of steel tubing, a main axle, low pressure tires, trailer cargo box. The axle is comprised of a plurality of wheels rotatable about ... | 06/01/2004 |
| 6644675 | Stair chair A stair chair is provided and includes a seat 30, a backrest 34, a foot rest 32, upper handles 84 and lower handles 82. Three wheels 62 are mounted at each side of the chair. The wheels are pivotal about their own axis and also a common axis. Rotation abo... | 11/11/2003 |
| 6609719 | Walker and wheel assembly therefor A walker includes a frame with downwardly extending front and rear legs. An obstacle traversing wheel assembly is disposed at the lower end of each front leg, and a wheel having a brake that is engaged by a downward force on the walker frame is disposed a... | 08/26/2003 |
| 6491119 | Mechanical walker A mechanical walker comprises six legs extending from a sphere, the legs organized in a X-Y-Z axial configuration. The sphere and legs support a bearing member. A shell holds the sphere and legs to the bearing member. Movement is accomplished by applying ... | 12/10/2002 |
| 6443250 | Control of a balancing personal vehicle A vehicle for transporting a payload over a surface that may be irregular and may include stairs. The vehicle has a support for supporting the payload and a ground contacting element movable with respect to a local axis, where the local axis can be moved ... | 09/03/2002 |
| 6435538 | Stair chair A stair chair is provided and includes a seat 30, a backrest 34, a foot rest 32, upper handles 84 and lower handles 82. Three wheels 62 are mounted at each side of the chair. The wheels are pivotal about their own axis and also a common axis. Rotation abo... | 08/20/2002 |
| 6415879 | Control inputs for a balancing personal vehicle A vehicle for transporting a payload over a surface that may be irregular and may include stairs. The vehicle has a support for supporting the payload and a ground contacting element movable with respect to a local axis, where the local axis can be moved ... | 07/09/2002 |
| 6357765 | Obstacle traversing wheel assembly An obstacle traversing wheel assembly that rolls easily without dragging over electrical cords, trash and debris includes a primary wheel that is journaled on an axle which is attached to a load carrying frame. At least four independently rotatable second... | 03/19/2002 |
| 6343798 | Scooter A scooter including a footboard, a rear wheel, a front wheel rod fastened to the front end of the footboard in conjunction with a folding member, a handlebar fastened to the top end of the front wheel rod, a wheel frame fastened to the bottom end of the f... | 02/05/2002 |
| 6336642 | Safety device for stair-climbing systems A safety device for stairway elevator systems (10) used for transporting apparatus and goods, especially wheelchairs (9) with persons who are unable to walk. The device is characterized in that the stairway elevator (10) or wheelchair (9) is fitted with a... | 01/08/2002 |
| 6224068 | Baggage pushcart configured for negotiating escalator stairways The present invention configures a pushcart, in particular a baggage cart such as is used in airports, for ease of maneuverability in negotiating an escalator stairway. The cart is fitted with a front wheel assembly and pivotable rear wheel assemblies, as... | 05/01/2001 |
| 6126176 | Fall suppressing device for a vehicle configured to ride on descending and ascending escalators A fall suppressing device 8 provided in a cart for moving up and down an escalator includes an engagement member 87 and an oil damper 81. The engagement member 87 is vertically movably coupled to the cart, and engages with an upper step when a wheel 5 fal... | 10/03/2000 |
| 5975225 | Transportation vehicles with stability enhancement using CG modification There is provided, in a preferred embodiment, a vehicle for transporting a payload (which may but need not include a human subject) over ground having a surface that may be irregular. This embodiment has a support for supporting the payload. A ground-cont... | 11/02/1999 |
| 5791425 | Control loop for transportation vehicles There is provided, in a preferred embodiment, a transportation vehicle for transporting an individual over ground having a surface that may be irregular. This embodiment has a support for supporting the subject. A ground-contacting module, movably attache... | 08/11/1998 |
| 5701965 | Human transporter There is provided, in a preferred embodiment, a device for transporting a human subject over ground having a surface that may be irregular and may include stairs. This embodiment has a support for supporting the subject. A ground-contacting module, movabl... | 12/30/1997 |
| 5579857 | Stair climbing vehicle A vehicle which goes up and down stairs includes a vehicle body (101), front and rear wheels (102) and (103) provided at the front and rear of the vehicle body (101), respectively, front and rear auxiliary wheels (105) and (107) for lifting up or down the... | 12/03/1996 |
| 5172925 | Mobile prone stander with positioning chair A mobile inclinable stander with positioning chair (2) includes a mobile frame (4) and a body support frame (18) tiltably mounted to the mobile frame for movement between upright and reclined orientations. Chest (26), waist (28) and knee (30) supports are... | 12/22/1992 |
| 5167439 | Wheel and brake system A wheel and brake system adapted for use with a vehicle for transportation comprising: a tread having a plurality of elements circumferentially spaced around the wheel to define a substantially circular outer edge of the tread, the elements capable of fle... | 12/01/1992 |
| 5052237 | Transmission device The invention relates to a transmission device for the motorization of a rolling-chair for example. Said transmission device comprises a hollow shaft 7 provided at each of its ends with a rolling train 8-13 idly pivoted on the hollow shaft 7 and comprisin... | 10/01/1991 |
| 4794999 | Wheelchair and method of operating same A wheelchair is adjustable between a compact configuration, in which the center of gravity lies in a vertical plane (50), which intersects wheels (16,116) on a front carrier of the wheelchair and an extended configuration in which the center of gravity li... | 01/03/1989 |
| 4790548 | Climbing and descending vehicle A stair-climbing and descending vehicle is disclosed, comprising a frame and a pair of transverse, co-axial, power-driven axles, each rotatably carrying a spider assembly at its outer end. Each spider has at least three wheels, one at each equi-spaced ext... | 12/13/1988 |
| 4709772 | Motorized moving device A motorized moving device is provided of the type comprising a chassis equipped for receiving a person or an object to be transported and an axle mounted for pivoting on the chassis in the lower region thereof, the axle comprising, fixed to each of its en... | 12/01/1987 |
| 4687213 | Wheel assembly for traversing obstacles A wheel assembly comprises at least two wheels (9) rotatable along a contact surface (2) and equally spaced on a carrier member (8) movably connected with a frame, e.g. a portion of a wagon body, a vehicle chassis, a container or a conveyor. The invention... | 08/18/1987 |
| 4674757 | Stair-climbing wheel utilizing an involute curve configuration A wheel for use with a variety of devices for moving a load up or down a series of stairs is disclosed, which wheel is comprised of a plurality of lobes like teeth on a gear. Each lobe has two surfaces which are symmetrical around a lobe center line, with... | 06/23/1987 |
| 4645222 | Vehicle and method of operating same A wheelchair capable of climbing a flight of steps has a cluster of rear wheels rotatably mounted on a member (19) which can pivot on a body (10) of the chair to move the rear wheels upwardly and downwardly and thereby compensate for differences in the le... | 02/24/1987 |
