Antitheft system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 28, 2000
Grant Date -
N/A
app pub date -
Aug 10, 1998
filing date -
Aug 11, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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