Apparatus and method for hydraulically controlling a vehicle...

Details Apparatus and method for hydraulically controlling a vehicle... Apparatus and method for hydraulically controlling a vehicle...

2005-05-24

2005-05-24

Lillis, Eileen D. (Department: 3651)

Material or article handling

Load-transporting type vehicle and external means...

Means serves to align wheeled vehicle and load receiving or...

C414S584000, C188S031000

Reexamination Certificate

active

06896469

ABSTRACT:
A valve circuit, including a first and second circuit portion, for hydraulically controlling a loading dock vehicle restraint. The first circuit portion permits raising and lowering of the vehicle restraint. The second circuit portion permits extension and retraction of the vehicle restraint. Preferably, the first and second circuit portion are separate and are configured on the same valve block.

REFERENCES:
patent: 4560315 (1985-12-01), Hahn
patent: 4674941 (1987-06-01), Hageman
patent: 4865508 (1989-09-01), Carlson
patent: 4938648 (1990-07-01), Horan et al.
patent: 4946330 (1990-08-01), Pedersen et al.
patent: 5120181 (1992-06-01), Alexander
patent: 5505575 (1996-04-01), Alexander
patent: 20030170091 (2003-09-01), Shomler et al.

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