Suspension system for powered wheelchair

Details Suspension system for powered wheelchair Suspension system for powered wheelchair

1996-11-05

1998-06-30

Culbreth, Eric D.

Land vehicles

Wheeled

Running gear

180 651, 180 655, 180907, 280 43, 280 4317, 280 4322, 280 4323, B60G 1126

Patent

active

057722374

ABSTRACT:
A suspension system for the ground engaging powered and/or caster wheels of a power wheelchair utilizes three links, two of which are universally pivotally connected between the frame of the wheelchair and a wheel mounting transaxle housing or subframe so that the wheels can tilt relative to the frame of the wheelchair in a vertical plane. A third link is connected between the vehicle frame and the wheel mounting structure which can only pivot in a vertical plane, thus restraining the wheels from any lateral displacement relative to the vehicle frame. Fluid cylinders operable between the links and the vehicle frame provide cushioning of the frame and also, by subtraction of fluid from the fluid cylinders, can lower the entire frame of the wheelchair relative to the ground engaging wheels to permit the wheelchair and occupant to drive into the side door opening of a conventional van.

REFERENCES:
patent: 3578352 (1971-05-01), Heine

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