Optional manual gravity wheelchair lift

Details Optional manual gravity wheelchair lift Optional manual gravity wheelchair lift

1982-06-25

1984-10-02

Spar, Robert J.

Material or article handling

Self-loading or unloading vehicles

Loading or unloading by other carrier or mover means, and...

414629, 414921, B60P 146

Patent

active

044745273

ABSTRACT:
A wheelchair lift such as for vehicles, comprising a stationary outer rectangular frame across the top of which swings an inner rectangular telescopic frame, the lower telescoping end of which has a foldable platform for the wheelchair. The inner frame swings out to clear the side of the vehicle, which swinging movement is limited by a pair of toggles that support a bridging platform between the lift platform and the floor of the vehicle. An electric motor-driven hydraulic pump, valve, and accumulator assembly provides the power for lifting the platform by telescoping the inner frame parts, and a valve in the hydraulic system damps the lowering of the platform. The folding of the platform from a vertical to a horizontal position and swinging of the inner frame may be done manually or by a separate reciprocating motor mounted on the upper telescopic frame.

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"Saf-T-Lift" by Collins, Apr. 14, 1978.

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