The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 2000
Filed:
Jul. 06, 1998
Applicant:
Inventors:
Jorge Fernando Alicot, Davie, FL (US);
Douglas A Narlow, Coral Springs, FL (US);
Richard L Copeland, Boca Raton, FL (US);
David N Lambeth, Pittsburgh, PA (US);
Assignee:
Sensormatic Electronics Corporation, Boca Raton, FL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
3405721 ; 3405723 ; 3405724 ; 3405725 ; 340551 ; 340556 ;
Abstract
A device for deactivating a magnetomechanical EAS marker includes two coils and an energizing circuit for alternately driving the coils. One coil is driven for one cycle of an alternating power signal, and then the other coil is driven for one cycle, and this sequence is repeated. The driving signal is switched from one coil to the other at a point in time which corresponds to a zero crossing of the current level of the driving signal.