Pit mounted retractable vehicle restraint

Details Pit mounted retractable vehicle restraint Pit mounted retractable vehicle restraint

1994-09-07

1996-04-09

Huppert, Michael S.

Material or article handling

Load-transporting type vehicle and external means...

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

414584, B65G 6900

Patent

active

055055753

ABSTRACT:
Apparatus used in a loading dock comprising a dock leveler mounted at the loading dock with a pit positioned below said dock leveler. A frame is mounted in the pit to support a vehicle restraint. The restraint has an arm assembly mounted to said frame for pivoting motion and a hook assembly having multiple hook elements mounted on the arm assembly and outward from the frame. A first actuator is mounted to the frame and engaging the arm assembly to drive both the arm assembly and the hook assembly to a lower inoperative position. A second actuator is mounted to the first actuator and the arm assembly to provide a constant upward bias tending to pivot the arm assembly and the hook assembly upward to an operative position.

REFERENCES:
patent: 4488325 (1984-12-01), Bennett et al.
patent: 4555211 (1985-11-01), Metz
patent: 4560315 (1985-12-01), Hahn
patent: 4674941 (1987-06-01), Hageman
patent: 4695216 (1987-09-01), Erlandsson
patent: 4830563 (1989-05-01), Yeakle
patent: 4938647 (1990-07-01), Erlandsson
patent: 5096359 (1992-03-01), Alexander
patent: 5203663 (1993-04-01), Ruppe
patent: 5212846 (1993-05-01), Hahn
patent: 5336033 (1994-08-01), Alexander
Powerhook II Truck Restraint, p. 10 of Poweramp brochure dated Feb. 1991.

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