Lifting apparatus for dockboard

Details Lifting apparatus for dockboard Lifting apparatus for dockboard

1978-12-18

1980-07-01

Byers, Jr., Nile C.

Bridges

Gangway, ramp, or dock leveler

14 725, E01D 100

Patent

active

042098696

ABSTRACT:
A lifting lever is rotatably mounted on at least one side of a dockboard for movement to a raised position for raising and holding one end of the dockboard above a loading dock or the like so that the forks of a lift truck or the like can be positioned under the dockboard to move it. The combination of the locations of the pivot point for the lever, a roller on the lever and a lever stop on the dockboard provide an over-center lock in the raised position of the lever and an automatic return of the lever to the lower position upon lifting of the dockboard by a forklift truck or similar vehicle. In one embodiment of the invention, the bearing roller engages the loading dock to lift the dockboard as the lever is moved to the raised position. In a second embodiment, the bearing roller engages a lifting arm pivotally mounted on the dockboard to move one end of the arm into engagement with the loading dock to lift the dockboard.

REFERENCES:
patent: 2329855 (1943-09-01), Rydner
patent: 2452289 (1948-10-01), Bryson
patent: 2597213 (1952-05-01), Whiteman
patent: 2829390 (1958-04-01), Noland
patent: 2880431 (1959-04-01), Noland
patent: 3122764 (1964-03-01), Ambli
patent: 4075729 (1978-02-01), Conner
patent: 4087876 (1978-05-01), Fillman

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