Portable unloading dock

Bridges – Gangway – ramp – or dock leveler

Reexamination Certificate

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Details

C014S072500

Reexamination Certificate

active

06898815

ABSTRACT:
A portable unloading dock for trucks including a frame structure, including a pair of trusses and lateral members supporting a ramp having an elevated end and a ground engaging end. The dock includes a plurality of wheels supporting the dock for manual movement, which are positioned inwardly from both ends of the ramp. A pair of linear actuators attached to the elevated end of the ramp having a contact foot for engaging the ground and lifting the elevated end of the ramp off its wheels and a plurality of adjustable length stabilizing legs mounted on the frame structure for ground engaging support when the dock is lifted off its wheels.

REFERENCES:
patent: 963918 (1910-07-01), Miller
patent: 3409923 (1968-11-01), Walker
patent: 4065825 (1978-01-01), Cohen
patent: 4517698 (1985-05-01), Lamp'l et al.
patent: 4972539 (1990-11-01), Reiter
patent: 5026243 (1991-06-01), Dell
patent: 5446937 (1995-09-01), Haskins
patent: 5833260 (1998-11-01), York
patent: 6330726 (2001-12-01), Hone et al.
patent: 6368043 (2002-04-01), Leum et al.
patent: 6526614 (2003-03-01), Anderson et al.

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