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:
May. 28, 2002
Filed:
Nov. 14, 2000
Reuel Andrew Ely, Plantation, FL (US);
Ronald B. Easter, Parkland, FL (US);
Sensormatic Electronics Corporation, Boca Raton, FL (US);
Abstract
An EAS activation/deactivation antenna in accordance with the invention comprises a core; a coil arrangement having at least two coils spirally wrapped about the core, the first coil having a first rotational direction and the second coil having a rotational direction counter to the first rotational direction; and, a current source operatively connected to the coil arrangement. In consequence of the inventive arrangement, a decaying or steady state, alternating or direct current supplied by a current source can excite the coil arrangement to produce a significant near magnetic field and a reduced far magnetic field, for activation or deactivation of EAS markers.