Stabilized article surveillance responder
AssigneeKnogo Corporation
InventorsArthur J. Minasy, Samuel Sensiper, Scott H. Fisher
Life of this patent
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Abstract
An electronic article surveillance system responder which comprises an electrical responder circuit and a housing which mounts the circuit on an article to be protected. The housing is arranged to support the circuit in such a manner that a dielectric region is formed between the circuit and the article. An electrically conductive plate is also held by the housing on the opposite side of the dielectric region from the circuit to isolate the circuit from the effects of metal objects on which the responder is mounted. The housing is flared so that it can be mounted on an article in proper orientation.
Claims24
A responder for use in detecting the unauthorized movement of an article to which it is attached, said responder comprising an electric circuit lying in a flat plane and configured to respond to incident electromagnetic interrogation waves by producing predetermined detectable disturbances thereto, and a support for securing said circuit to an article, said support being constructed to provide between said circuit and said article, a dielectric region of sufficient thickness to make the circuit response substantially independent of the material of the article.
A responder for use in detecting the unauthorized movement of an article to which it is attached, said responder comprising an electric circuit lying in a flat plane and configured to respond to incident electromagnetic interrogation waves by producing predetermined detectable disturbances thereto, an electrically conductive plate, a support which mounts said circuit over said plate, said support being constructed to provide between said circuit and said plate, a dielectric region of sufficient thickness to prevent substantial degradation by said plate of the response of said circuit to said electromagnetic interrogation waves.
Dependencies are inferred from the claim text.