Hydraulically stowable and extendable ramp

Details Hydraulically stowable and extendable ramp Hydraulically stowable and extendable ramp

2005-03-01

2005-03-01

Lillis, Eileen D. (Department: 3652)

Material or article handling

Self-loading or unloading vehicles

Conveyor

Reexamination Certificate

active

06860702

ABSTRACT:
A linear hydraulic actuator mounted to the frame of a trailer to drive a slider longitudinally and return the slider to its rest position urging a ramp about a horizontal transverse axis such that the ramp moves between a stowed position and an extended position. The slider is operatively connected to a parallel rod which is connected to a bell crank on a pivotally mounted stand beneath the end of the trailer such that as the slider moves the stand is concomitantly urged between a stowed position and a deployed ground engaging position.

REFERENCES:
patent: 3834565 (1974-09-01), Goodman et al.
patent: 3866771 (1975-02-01), Reid et al.
patent: 4498836 (1985-02-01), Love
patent: 4647270 (1987-03-01), Maloney
patent: 5388949 (1995-02-01), Berg
patent: 5678984 (1997-10-01), Petersen
patent: 6386819 (2002-05-01), Schultz

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