Antitheft system

Details Antitheft system Antitheft system

1998-08-10

2000-03-28

Lee, Benjamin C.

Communications: electrical

Condition responsive indicating system

Specific condition

3405721, 3405724, G08B 1314

Patent

active

060437448

ABSTRACT:
An antitheft system embodying the invention comprises an alarm unit 2 attached to a commodity for producing an alarm on receiving a detection signal or an alarm activating signal while stopping the alarm on receiving an alarm stopping signal, and a signal generator provided on a cashier's counter for producing alarm activating signals and alarm stopping signals alternately. When the commodity is handed by the customer to the clerk at the cashier's counter, with the alarm unit 2 attached to the commodity, the alarm unit 2 intermittently produces an alarm on receiving alarm activating signals and alarm stopping signals alternately, thereby enabling the clerk to reliably recognize that the alarm unit 2 is attached to the commodity. When the clerk thereafter removes the alarm unit 2 from the commodity, the production of alarm is forcibly ceased.

REFERENCES:
patent: 5245317 (1993-09-01), Chidley et al.
patent: 5726627 (1998-03-01), Kane et al.
patent: 5808548 (1998-09-01), Sasagawa et al.

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