Step-climbing wheel chair

Details Step-climbing wheel chair Step-climbing wheel chair

1978-06-08

1980-09-16

Pekar, John A.

Motor vehicles

Special driving device

Stepper

280 52, 280DIG10, A61G 504

Patent

active

042224497

ABSTRACT:
An improved step-climbing wheel chair with integral retractable ramps for ascending or descending a step, curb or the like. The conveyance is provided with a two-speed transmission capable of driving the wheel chair on level terrain at conventional speeds or selecting a low speed high torque capability for driving the conveyance up an inclined ramp.
The invention further contains a self-leveling chair seat which automatically maintains the occupant in a level seated position regardless of the inclined position assumed by the wheel chair frame, thereby contributing to the stability of the wheel chair and the safety of the occupant.

REFERENCES:
patent: 468022 (1892-02-01), Bray
patent: 3259200 (1966-07-01), Maijala
patent: 3976152 (1976-08-01), Bell

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