G - Physics – 08 – B
Patent
G - Physics
08
B
340/124.3
G08B 13/24 (2006.01)
Patent
CA 2029245
44692 CAM 8A Abstract of the Disclosure An apparatus for use with magnetically based electronic article surveillance systems employing certain types of markers includes a hollow core having a gap in its perimeter, a coil of wire wrapped around a portion of the core, and appropriate circuitry to drive the combination as an electromagnet. The gap configuration produces an external field of large intensity but limited range, such that the magnetizable portion of a marker is magnetized without affecting magnetic states of the article to which the marker is affixed. Depending on the nature of the circuit, the apparatus may be used as a desensitizer of such markers, or preferably as a resensitizer. PF-FOR2.3
Montean Samuel
Sanetra Juergen
Schug Heinrich
Minessota Mining And Manufacturing Company
Smart & Biggar
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