Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1991-05-22
1992-08-25
Ng, Jin F.
Communications: electrical
Condition responsive indicating system
Specific condition
343895, G08B 1314, H01Q 136
Patent
active
051422700
ABSTRACT:
A stabilized resonant tag circuit and deactivator therefore for use as an electronic article surveillance tag. The tag has a flexible substantially planar dielectric substrate having conductors positioned on either side, at least one of the conductors including an inductor. The tag is stabilized by a flexible, substantially planar, tear-resistant, polymeric film adhered to and covering one of the conductors and the substrate. The film provides a vapor barrier which minimizes the effects of body detuning on the circuit and promotes the secured integrity of the tag. Another embodiment of the present invention is a stabilized deactivatable resonant tag circuit, further including a deactivator for deactivating the tag in response to an electromagnetic field of sufficient energy to destroy the resonant properties of the circuit, the deactivator being an indented portion of at least one of the conductors such that the conductors are closer to each other at the indented portion than at the remainder of the conductor.
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Appalucci Lawrence C.
Ortiz Luis F.
Checkpoint Systems Inc.
Mullen Jr. Thomas J.
Ng Jin F.
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