Automatic cargo elevator for vehicle

Details Automatic cargo elevator for vehicle Automatic cargo elevator for vehicle

1980-10-24

1983-07-26

Noland, Kenneth W.

Material or article handling

Self-loading or unloading vehicles

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

414558, 187 9R, 296 57R, B60P 148

Patent

active

043951872

ABSTRACT:
A cargo elevator, designed particularly for attachment to the rear end of a truck or trailer having a cargo bed, includes a mounting frame secured at the rear end of the cargo bed and disposed downwardly and forwardly with the forward end secured to the vehicle frame. The mounting frame includes aligned and axially spaced bearing sleeves for rotatably supporting a torque shaft and the mounting frame supports an hydraulic power cylinder, acting on a radial arm of the torque shaft between the sleeves to oscillate the torque shaft. Elevator platform lift arms are nonrotatably fixed to the ends of the torque shaft, and parallel arms are pivotally mounted on the mounting frame; and these are pivotally attached to a base platform of the elevator platform, to maintain it generally horizontal. The elevator platform includes an outer folding platform hinged to the base platform; and an articulated locking and folding mechanism, connected between fixed pivots on the base platform and folding platform, effects the unfolding of and locking of the folding platform in the load position and the folding of the platform to a stored position. An actuator arm pivotally mounted on the cargo bed may be engaged with an actuator lever of the articulated mechanism, to effect the folding of the folding platform during upward movement of the base platform, and to effect unfolding of the folding platform during downward movement of the base platform.

REFERENCES:
patent: 2792135 (1957-05-01), Wood
patent: 3257011 (1966-06-01), Randall et al.
patent: 3282451 (1966-11-01), Corley, Jr.
patent: 3369678 (1968-02-01), Robinson
patent: 3799373 (1974-03-01), Randall
patent: 3883014 (1975-05-01), Glomski et al.
patent: 4078676 (1978-03-01), Mortenson
patent: 4111317 (1978-09-01), Robinson

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