U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Power-up vehicle restraint

Patent 6431819 Issued on August 13, 2002. Estimated Expiration Date: Icon_subject June 30, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Device for releasably securing a vehicle to an adjacent support
Patent #: 4208161
Issued on: 06/17/1980
Inventor: Hipp ,   et al.

Releasable locking device
Patent #: 4264259
Issued on: 04/28/1981
Inventor: Hipp

Releasable lock mechanism
Patent #: 4267748
Issued on: 05/19/1981
Inventor: Grunewald ,   et al.

Releasable locking device
Patent #: 4282621
Issued on: 08/11/1981
Inventor: Anthony ,   et al.

Releasable locking device
Patent #: 4373847
Issued on: 02/15/1983
Inventor: Hipp ,   et al.

Releasable locking device
Patent #: 4379354
Issued on: 04/12/1983
Inventor: Hahn ,   et al.

Truck locking device
Patent #: 4400127
Issued on: 08/23/1983
Inventor: Metz

Releasable locking device
Patent #: 4443150
Issued on: 04/17/1984
Inventor: Hahn ,   et al.

Releasable locking device
Patent #: 4472099
Issued on: 09/18/1984
Inventor: Hahn ,   et al.

Truck locking device
Patent #: 4488325
Issued on: 12/18/1984
Inventor: Bennett ,   et al.

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Inventor

Assignee

Application

No. 608984 filed on 06/30/2000

US Classes:

414/809, Of loading or unloading load-transporting type vehicle and external means cooperating in loading or unloading thereof414/401Means serves to align wheeled vehicle and load receiving or relinquishing structure

Examiners

Primary: Keenan, James W.

Attorney, Agent or Firm

International Class

B65G 067/02

Abstract

A vehicle restraint for a truck loading dock includes an actuator that rides up with a carriage to sense that a truck's ICC bar is within a predetermined region before fully extending a restraining member to engage the bar. The carriage and restraining member are raised and lowered by a drive unit, such as a cable extending from a winch. The winch may be attached directly to the carriage, or optionally remotely mounted to the dock. One end of the cable connects to a spring that compensates for incidental vertical movement of the ICC bar caused by the truck being loaded or unloaded. Large downward movement of the ICC bar is accommodated by a clutch associated with the winch. For large upward movement, the winch automatically restarts to pull the carriage up to meet the new height of the bar. An optional ICC bar deflector mounted at the base of the dock, along side the carriage, wedges underneath an exceptionally low ICC bar as the truck backs into the dock. The deflector guides and lifts the low bar above the actuator to prevent premature and uncontrolled extension of the restraining member.

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