Method and apparatus for deactivating magnetic targets
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United States of America Patent
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Jun 30, 1992
Grant Date -
N/A
app pub date -
Jan 17, 1991
filing date -
Jan 17, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Articles of merchandise (42) which contain deactivatable theft detection targets (44) have their targets deactivated by passing them through a box-like apparatus (30) made of low coercive force, high saturation induction material with a multiplicity of permament magnets (48) on its inside surfaces so as to generate magnetic fields which extend at different directions and at decreasing intensities from one end of the apparatus to the other so that irrespective of a target's orientation while passing through the apparatus, the target's magnetic deactivation slugs or elements will encounter a magnetizing field along the target's length sufficient to magnetize the elements.
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