|
Match
|
Document |
Document Title |
|
|
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...
|
|
|
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 set...
|
|
|
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 platforms...
|
|
|
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 each...
|
|
|
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...
|
|
|
3554309 |
POWER-OPERATED LOAD TRANSPORTING DEVICE
A power-operated load-transporting device operable up and down steps and along passageways. The device is equipped with front and rear supports selectively reciprocal to elevate the main frame...
|
|
|
3438641 |
STAIR CLIMBING WHEELCHAIR
|
|
|
3346270 |
Step climbing wheel carriage
|
|
|
3279812 |
Baby carriage wheel lowering mechanism
|
|
|
3235278 |
Obstacle or stair-climbing trailer
|
|
|
3215446 |
Stair-climbing wheel chair
|
|
|
3142351 |
Stair climbing wheelchair
|
|
|
3133742 |
Stairclimbing wheelchair
|
|
|
3104112 |
Stair climbing wheel chair
|
|
|
3049364 |
Stair climbing wheel chair
|
|
|
2982560 |
Chassis mechanism for wheeled vehicles
|
|
|
2981546 |
Vehicle undercarriage facilitating the lifting of the vehicle over curbs and steps
|
|
|
2787472 |
Device for moving baby carriages over curb and steps
|
|
|
2770464 |
Undercarriage for vehicles designed to run over uneven ground and, in particular, up and down stairs
|