Hydraulically operated bus ramp mechanism

Details Hydraulically operated bus ramp mechanism Hydraulically operated bus ramp mechanism

1993-01-06

1995-02-21

Huppert, Michael S.

Material or article handling

Self-loading or unloading vehicles

Conveyor

91464, 414921, B65G 6700

Patent

active

053910419

ABSTRACT:
A mechanism is provided for deploying a wheelchair ramp at the door of a vehicle, especially a bus, the ramp being of the kind which rotates between a stowed position at which it is flush with the vehicle floor and a deployed position in which it slopes downwardly and outwardly from the vehicle. The mechanism provides a "float down" feature which permits the ramp to move downward under gravity without the need for operator control and prevents crushing of obstacles that get in the downward path of the ramp. The mechanism includes a transmission for translating a single hydraulic cylinder stroke into more than 180.degree. of rotation of the ramp.

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