Cart theft prevention system

Details Cart theft prevention system Cart theft prevention system

1992-08-10

1994-05-24

Mullen, Thomas

Communications: electrical

Condition responsive indicating system

Specific condition

280 33994, 340539, 361170, 455344, G08B 1314, B62D 3900

Patent

active

053152905

ABSTRACT:
A cart immobilizing mechanism responding to signals prescribing a permitted use area for the cart is contained entirely within a wheel of the cart. This mechanism preferably includes a circuit board containing a radio frequency receiver, a decoder, and a logic driver. The mechanism also includes a solenoid device. When the receiver detects that the cart has been moved outside the prescribed use area, the solenoid device is energized to drive its armature into an opening in a non-rotating shaft supporting a wheel, thereby locking the wheel against rotation and immobilizing the cart.

REFERENCES:
patent: 2964140 (1960-12-01), Berezny
patent: 3031037 (1962-04-01), Stollman
patent: 3652103 (1972-03-01), Higgs
patent: 4242668 (1980-12-01), Herzog
patent: 4577880 (1986-03-01), Bianco
patent: 4593273 (1986-06-01), Narcisse
patent: 4772880 (1988-09-01), Goldstein et al.
patent: 4791409 (1988-12-01), Reid
patent: 4987406 (1991-01-01), Reid

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