Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2006-10-31
2006-10-31
Hofsass, Jeffery (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C342S021000, C340S572700, C340S572800
Reexamination Certificate
active
07129843
ABSTRACT:
A security tag includes a combination of a resonant frequency circuit with an adjacent amplification shield for enhancing output signal amplitude. The amplification shield is located adjacent to the resonant frequency circuit and is preferably in the same or substantially the same plane as the resonant frequency circuit or is in a close, generally parallel plane. In an exemplary embodiment, the resonant frequency circuit includes an inductor electrically coupled to a capacitor. The resonant frequency circuit has a center frequency and is arranged to resonate in response to exposure to electromagnetic energy at or near the center frequency, providing an output signal having an amplitude. The amplification shield is arranged to direct a portion of the electromagnetic energy to the resonant frequency circuit to amplify the amplitude of the output signal from the resonant frequency circuit.
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Appalucci Lawrence
Mazoki Gary T.
Perez David Lopez
Piccoli Anthony F.
SolerBonnin Luis Francisco
Caesar Rivise Bernstein Cohen & Pokotilow Ltd.
Checkpoint Systems Inc.
Hofsass Jeffery
Lau Hoi C.
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