Theft-deterrent device including clamp

Details Theft-deterrent device including clamp Theft-deterrent device including clamp

1991-09-19

1992-08-25

Luebke, Renee S.

Locks

Special application

For antitheft signaling device on protected article

70 38A, 70413, 292252, B65D 5510

Patent

active

051408368

ABSTRACT:
A clamp for use as a theft deterrent device includes a U-shaped member having first and second legs, with each leg including a shelf disposed on the inside edge of the member and extending laterally toward the opposite leg; a housing defining a pair of longitudinal channels for receiving the legs of the U-shaped member and a slot extending between the longitudinal channels; a pair of overlapping plates disposed for separate movement within the slot into and away from different ones of the longitudinal channels, with each plate including a row of teeth disposed on a longitudinal edge of the one plate that moves into one channel for engaging the shelf on one leg of the U-shaped member received by said one channel to prevent removal of the one leg from the channel. A positioning member is disposed within the housing for forcing one plate to move into one channel and the other plate to move into the other channel such that the teeth of the plates respectively engage the shelves of the legs of the U-shaped member received in the longitudinal channels to prevent removal of the U-shaped member from the housing. The positioning member includes a magnetically attractive element that is movable from a first position to a second position within the housing when attracted by a magnetic field applied in a predetermined direction such that when the magnetically attractive element moves to its second position, the plates are forced to move away from the longitudinal channels sufficiently to disengage the teeth from the shelves so that the U-shaped member can be removed from the housing.

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