Magnetic decoupler
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United States of America Patent
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Jul 4, 2000
Issued Date -
N/A
app pub date -
Apr 7, 1999
filing date -
Aug 21, 1998
priority date (Note) -
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Abstract
An improved magnetic decoupler with a magnetic field shape, strength and gradient optimized for releasing security tags, such as an antitheft device of the type described above. Due to the structure of the magnetic decoupler, it contains less ferrous material than prior art decouplers heretofore employed. Reduction in size of the magnetic decoupler, along with improved magnetic strength, derive from the magnet assembly including magnets arranged with orientations that increase axial magnetic field gradient by superposition of the magnetic fields of each magnet.
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