Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1993-04-22
1995-09-26
Noland, Thomas P.
Communications: electrical
Condition responsive indicating system
Specific condition
235493, G08B 1326
Patent
active
RE0350427
ABSTRACT:
A magnetic theft detection system marker is adapted to generate magnetic fields at frequencies that (1) are harmonically related to an incident magnetic field applied within an interrogation zone and (2) have selected tones that provide the marker with signal identity. The marker is an elongated, ductile strip of amorphous ferromagnetic material having a value of magnetostriction near zero that retains its signal identity under stress.
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Egami, T. et al. Amorphous Alloys as Soft Magnetic Materials, Publication of Univ. of Penn. 1975, 17 pages.
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Anderson, III Philip M.
Hasegawa Ryusuke
VonHoene Robert M.
Allied Corporation
Brown Melanie L.
Buff Ernest D.
Noland Thomas P.
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