Releasable locking device

Details Releasable locking device Releasable locking device

1993-07-08

1994-03-29

Huppert, Michael S.

Material or article handling

Load-transporting type vehicle and external means...

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

414396, B65G 6900

Patent

active

052979210

ABSTRACT:
A device for releasably locking a parked vehicle at a loading dock during loading and unloading thereof. The device is provided with a carriage mounted for vertical adjustment relative to the front wall of the dock and adapted to be yieldably engaged by a depending safety bar of the parked vehicle. A hook-like member is mounted on the carriage for independent rectilinear movement between an operative mode wherein the vehicle safety bar is lockingly engaged thereby and an inoperative safety bar-release mode. A power-actuated unit is mounted on the carriage and is connected by a linkage assembly to the hook-like member and effects movement thereof between the operative and inoperative modes. The linkage assembly includes a pair of pivotally connected links one of which has an end portion pivotally connected to the hook-like member and the other has an end portion pivotally connected to a lower portion of the carriage. One of the links is pivotally connected to a movable portion of the unit and when the latter is moving in one relative direction causes the linkage assembly to move the hook-like member to the operative mode. When the unit portion is moved in a second relative direction, the linkage assembly moves the hook-like member to the inoperative mode. A control assembly is operatively connected to the power-actuated unit and is adapted to selectively actuate and deactuate the power-actuated unit.

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