Bridges – Gangway – ramp – or dock leveler – Attached
Patent
1977-07-26
1978-09-05
Byers, Nile C.
Bridges
Gangway, ramp, or dock leveler
Attached
B65G 6924
Patent
active
041108604
ABSTRACT:
A leveler assembly is provided for mounting within a pit which is normally formed in a loading dock. The pit includes a base recessed a substantial distance below the platform surface of the dock, a rear wall, an open top and an open front side. The assembly includes a frame anchored within the pit adjacent the base thereof. The frame includes a front section disposed adjacent the open front side of the pit and recessed a substantial distance from the open top. The frame also includes a rear section having a top portion disposed adjacent to but beneath the pit open top. Hingedly connected to the rear section top portion is a loading bearing deck member which is adapted to normally assume a neutral position, wherein the exposed surface thereof is substantially coplanar with the dock platform surface. Adjustably connected to the underside of the deck member at a location spaced rearwardly a substantial distance from the front edge of the deck member is a first fluid pressure-responsive telescoping component. A complemental second fluid pressure-responsive telescoping component is adjustably connected to the frame front section. The telescoping components coact with one another to effect pivoting of the deck member to selected positions either up or down relative to the neutral position. Control means are provided for regulating the fluid pressure to the telescoping components and, thus, the orientation of the deck member.
REFERENCES:
patent: 2644971 (1953-07-01), Rowe
patent: 2881457 (1959-04-01), Rodgers
patent: 2993219 (1961-07-01), Pennington
patent: 3201814 (1965-08-01), LeClear
patent: 3290710 (1966-12-01), Whitenack
patent: 3345665 (1967-10-01), Anderson
patent: 3388413 (1968-06-01), Clarke
patent: 3456274 (1969-07-01), McGuire
patent: 3685076 (1972-08-01), Loblick
patent: 3694839 (1972-10-01), Loblick
Grunwald Lynn O.
Hahn Norbert
Neff Robert O.
Potter Roderick B.
Byers Nile C.
Rite-Hite Corporation
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