G - Physics – 09 – F
Patent
G - Physics
09
F
G09F 5/00 (2006.01) E05B 67/00 (2006.01) E05B 73/00 (2006.01) G08B 13/22 (2006.01) G09F 3/03 (2006.01) E05B 47/00 (2006.01)
Patent
CA 2117130
MAGNETICALLY RELEASABLE CLAMP ABSTRACT OF THE DISCLOSURE A clamp includes a U-shaped member having a pair of legs, with each leg having a cavity in the side of the leg facing the other leg; and a clutch for receiving and restraining the legs of the U-shaped member. Pads are attached to the insides of the legs for clamping an article between the legs to deter thetheft of such article. The clutch includes a housing defining a pair of lon- gitudinal channels for respectively receiving the legs of the U-shaped member and a chamber between the channels, with the chamber being open to the channels; two balls disposed for movement within the chamber; a highly mag- netically attractive plunger disposed within and at one end of the chamber; and a spring for biasing the plunger to move into such contact with the balls as to force the balls against respective inclined surfaces disposed at the other end of the chamber for respectively guiding the balls toward different channels. When the legs of the U-shaped member are inserted into the channels so that the cavities are respectively adjacent the balls while the plunger is forcing the balls against the inclined surfaces, the inclined surfaces guide the balls respectively into the cavities and into contact with portions of the respective legs adjacentthe respective cavities to thereby restrain the legs of the U-shaped member in the housing. To release the legs from the clutch, a magnet is placed adjacent the one end of the housing to magnetically attract the plunger and the balls toward the one end of the chamber and thereby release each ball from a locked position between the respective inclined surface and the portion of the leg thatcontacts the ball.
Security Tag Systems Inc.
Smart & Biggar
LandOfFree
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