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8763732 Robotic platform  
A method of negotiating an obstacle including driving an articulated vehicle along a drive direction over a surface, driving the articulated vehicle to approach an obstacle with a rearward portion...
8764028 Stair climbing wheel with multiple configurations  
A stair climbing wheel and vehicles are described. The stair climbing wheel has a rolling wheel and a plurality of deployable protrusions that allow the wheel to climb stairs. The deployable...
8702108 Vehicle having a level compensation system  
A vehicle having a multiple of level compensation systems is disclosed. The vehicle comprising a chassis having a left frame, a right frame and a base plate, a first level compensation system...
8662215 Maneuvering robotic vehicles having a positionable sensor head  
Configurations are provided for vehicular robots or other vehicles to provide shifting of their centers of gravity for enhanced obstacle navigation. Various head and neck morphologies are provided...
8322470 Maneuvering robotic vehicles having a positionable sensor head  
Configurations are provided for vehicular robots or other vehicles to provide shifting of their centers of gravity for enhanced obstacle navigation. Various head and neck morphologies are provided...
8231131 Staircase movable cart  
A cart that can be used as a hand truck for carrying heavy loads up and down a staircase is disclosed. The design has means for accommodating in any size of staircase steps and the small compact...
8167317 Wheelchair attachments  
Attachments for a manual wheelchair are provided for navigating a wheelchair over obstacles and uneven terrain, such as a typical curb on a street. The attachments provide for regulating the...
8157031 Multi-legged walking device  
A multi-legged walking device includes a crankshaft, a plurality of linkage bar mechanisms, a support member, and a driving device. The crankshaft includes a plurality of main journals and...
8100415 Wheel suspension  
The present invention relates to a wheel suspension for mounting on a frame (3) of a vehicle, which, in its direction of propulsion, is arranged to be able to scale an obstacle (7), the wheel...
8079432 Maneuvering robotic vehicles having a positionable sensor head  
Configurations are provided for vehicular robots or other vehicles to provide shifting of their centers of gravity for enhanced obstacle navigation. Various head and neck morphologies are provided...
7784569 Barrier-overpassing transporter  
The present invention discloses a barrier-overpassing transporter, which comprises: a support frame carrying a rider or another load; a sensing/adjusting module detecting a tilting state of the...
7766342 Wheelchair attachments  
Attachments for a manual wheelchair are provided for navigating a wheelchair over obstacles and uneven terrain, such as a typical curb on a street. The attachments provide for regulating the...
7654348 Maneuvering robotic vehicles having a positionable sensor head  
Configurations are provided for vehicular robots or other vehicles to provide shifting of their centers of gravity for enhanced obstacle navigation. Various head and neck morphologies are provided...
6550787 Conveying apparatus for ascending or descending stairways  
A conveying apparatus capable of ascending or descending stairways and carrying goods consists of a frame, a transmission mechanism and a driving mechanism located on a lower section of the frame....
6547026 Safety separation system  
A safety mechanism for a personal vehicle that provides for separation of the motion of a body support from a ground contacting assembly of the vehicle in case of accident. In one embodiment, the...
6386552 Two-wheel hand truck  
A sack trolley (1) comprises a support frame (2) presenting a lower pair of carrying wheels (4) and a hoist mechanism (6) for climbing steps, which comprises a lifting arm (10) equipped with...
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...
5833248 Stairway ascending/descending vehicle having an arm member with a torque transmitting configuration  
A stairway ascending/descending vehicle which may ascend/descend the steps of the stairs having a height greater than a diameter of wheels and in which vertical vibration is suppressed. The...
5372211 Method for surmounting an obstacle by a robot vehicle  
Surmounting obstacles in the path of a robot vehicle is accomplished by rotating the wheel forks of the vehicle about their transverse axes with respect to the vehicle body so as to shift most of...
5273296 Obstacle overcoming vehicle suspension system  
A suspension for propelling a vehicle so as to overcome an obstruction in its desired path of progress. The suspension includes connections between the chassis and body of the vehicle with its...
5263547 Stair climbing device  
A stair climbing device, such as a wheelchair for handicapped comprises a frame having two sides, two wheel pairs each arranged on a respective one of the sides of the frame, each of the wheel...
5195762 Hand truck lift  
A novel hand truck lift is provided comprising an elevating assembly which is extendable downwardly to easily enable the hand truck lift to be used to move objects supported thereon up and down...
5096265 Folding hand truck auxiliary wheel structure  
A folding hand truck auxiliary wheel structure comprising an U-shaped auxiliary wheel frame adjustably secured to the wheel frame of a folding hand truck by a stop plate and a U-shaped spring wire...
4993912 Stair climbing robot  
A stair climbing robot and method of operation is described. The robot includes a chassis having powered opposed front wheels and two pairs of rear wheels each pair being rotatably mounted on a...
4962942 Minimum energy curb negotiating wheelchair  
A wheelchair which can negotiate curbs and other obstructions with a minimum of effort by the wheelchair occupant. The wheelchair has conventional front caster wheels and rear propulsion wheels,...
4960179 Powered heavy-duty hand truck  
This hand truck is designed to enable heavy cargo to be easily transported up or down stairs. The truck utilizes a pair of rotatable large wheels with radially and equally spaced apart lobes or...
4906014 Flatcar for carrying the burden  
A handtruck for use in carrying a load, comprises springs installed on a frame, a connection shaft received rotatably in bearings mounted on the opposite end portion of the springs and...
4770429 Baby carriage capable of climbing stairs  
A baby carriage capable of climbing stairs utilizes a tubular frame with rear legs pivotably connected to and a basket tiltably positioned on said frame.The basket in its position is secured by a...
4709773 Variable geometry track vehicle  
The vehicle comprises two tracked bodies and one non-tracked body articulated about a common axis. Each tracked body comprises two laterally positioned tracks. The engines are carried by tracked...
4627508 Step-negotiating vehicle  
A step-negotiating vehicle comprises a low-level chassis structure with motor-driven tracks, for carrying a load such as a wheelchair. The vehicle is provided with an extension support means to...
4618155 Stair-climbing wheelchair  
The invention is an apparatus or wheelchair of conventional doorway width capable of negotiating stairways, turning about landings as necessary. The chair includes an outer supporting assembly,...
4569409 Stair climbing wheelchair  
A wheelchair for handicapped persons with a seat disposed on a movable frame, a battery set for the power supply of drive motors coordinated to the wheels of the wheelchair and a steering system...
4550924 Hand-operated cart  
Hand-operated cart for transporting loads, such as household machines, bags or the like and including a traveling frame with two running wheels and a load-carrying frame with two supporting wheels...
4541644 Manual utility cart  
A manual utility cart including a frame having spaced cargo retaining portions and a lower portion. An axle journaled in the lower portion of said frame journals a first set of wheels. A second...
4455029 Wheel chairs  
A wheel chair has means for surmounting obstacles, comprising extensible legs 8 with wheels 10 at their feet ends, a link cable or the like mechanical connection actuable by a handle, 18 for...
4353428 Suspension of vehicles for rugged terrain  
The invention relates to the suspension of a vehicle for rugged terrain with a wheel or wheel-like ground engaging element, the ground-engaging surface of which has the shape of a body of...
4326622 Cooperative escalator and wheel chair  
The combination of an escalator and a wheel chair, the escalator having side walls between which an endless belt of flights is moved, there being a track extending between lower and upper...
4310167 Center of gravity wheelchair with articulated chassis  
A center of gravity wheelchair with an articulated chassis front and rear caster wheels, in which the main wheels and front and rear caster wheels are arranged in a diamond pattern, and the main...
4310166 Transport apparatus especially for goods, capable of travelling over stairs  
A transport apparatus having a loading bridge, is movable by hand for transporting loads over stairs. There are two front rollers (3), which are either extendable or variable in their angular...
4264085 Wheelchair convenience attachments  
The commonplace laterally collapsible wheelchair is rendered more convenient and versatile by the addition thereto of several add-on attachments which can be readily installed by the purchaser of...
4119163 Curb climbing wheel chair  
A self-propelled wheel-chair capable of climbing up or down a curb is disclosed. The wheel-chair is able to elevate an occupant higher than existing types of wheel-chairs practically to the height...
4108449 Stair-climbing wheelchair  
A wheelchair which has a seat, back and foot and leg supporting structure in which there are main and auxiliary wheels for supporting the body of the wheelchair when it is operating on a...
RE28936 Cart with automatic positioning handle and independently positionable wheels  
The disclosure relates to a cart or pick-up truck capable of transporting a load on level ground, hills and inclines and up stairways and the like wherein the operator thereof is capable of...
3836160 STAIR ASCENDING OR DESCENDING CART  
A cart is disclosed for assisting one in moving an object up or down stairs. Rear wheels rotatable about a fixed axis and rotatable front wheels mounted movably with respect to the rear wheels are...
3724864 CRAWLER TYPE LOAD TRANSPORTING DEVICE  
A combination hand truck and a manual or power driven propulsion unit including means for removably securing the propulsion unit to the body of the hand truck. The hand truck is of conventional...
3724863 CART WITH AUTOMATIC POSITIONING HANDLE AND INDEPENDENTLY POSITIONABLE WHEELS  
The disclosure relates to a cart or pick-up truck capable of transporting a load on level ground, hills and inclines and up stairways and the like wherein the operator thereof is capable of...
3592282 STAIR-TRAVERSING WHEELCHAIR APPARATUS  
An apparatus adapted to carry a wheelchair comprises a frame having side members between which the wheelchair is mounted which frame members carry adjustable support means for raising and lowering...
3591195 WHEEL ASSEMBLY FOR VEHICLES PARTICULARLY INTENDED FOR COMBINED ROAD AND CROSS-COUNTRY TRANSPORTS  
A vehicle wheel assembly for use in pairs on combined road and cross-country transport vehicles includes two links each articulated with a common frame and a balancing arm pivotally carried by...
3580591 WHEELCHAIR ATTACHMENT  
Wheelchair attachments, ordinarily installed in pairs, for enabling patients confined to wheelchairs to easily negotiate obstacles, such as curbs, in a conventional wheelchair having two small...
3567236 WHEELCHAIR ATTACHMENT  

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