Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1992-10-06
1995-04-25
Swarthout, Brent
Communications: electrical
Condition responsive indicating system
Specific condition
340551, G08B 1314
Patent
active
054102960
ABSTRACT:
A magnetic tag deactivator for use in an electromagnetic article surveillance system. [The deactivator is adapted for use in conventional, pre-existing retail store check-out counters.] An elongated magnet assembly is secured beneath a transition plate which spans the distance between a [check-out counter] conveyor belt and countertop of a conventional, pre-existing retail store check-out counter. The magnet assembly provides a magnetic field above the transition plate that is capable of deactivating a magnetically alterable tag secured to an object to be purchased as the object is passed over the transition plate from the conveyor belt to the countertop.
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"Demag characteristics of Magnequench.TM.," Delcoremy Division of General Motors, 2 pgs.
Montbriand David P.
Zarembo Peter J.
Griswold Gary L.
Kirn Walter N.
Levinson Eric D.
Minnesota Mining and Manufacturing Company
Mullen Jr. Thomas J.
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