Cargo door/ramp lift assist system

Details Cargo door/ramp lift assist system Cargo door/ramp lift assist system

2007-01-03

2011-11-22

Rodriguez, Saul (Department: 3652)

Material or article handling

Self-loading or unloading vehicles

Conveyor

C414S556000, C414S557000

Reexamination Certificate

active

08061954

ABSTRACT:
A lift assist system for cargo door ramps of trucks and trailers which includes one or more torsion arms that are housed in a tubular housing assembly attached at the pivotal axis of the door ramps. The housing assembly includes left and right door hinges and at least one center door hinge. Tubular housing members which house the torsion bars extend between the door hinges.

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patent: 2007/0262107 (2007-11-01), Brenneman et al.

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