System for deactivating a field-sensitive tag or label
First Claim
1. For use in an electronic security system, a field-sensitive tag comprising a resonant circuit, and a deactivating layer in contact with at least portions of said resonant circuit and incorporating means for physically opening a portion of said resonant circuit in contact with said deactivating layer.
3 Assignments
0 Petitions
Accused Products
Abstract
A field-sensitive tag or label incorporates a layer for mechanically deactivating the tag resulting from subsequent use of the article to which the tag has been applied. To this end, a layered tag is provided which, in addition to the layers which are traditionally provided to achieve the function of a resonant circuit (e.g., substrate and etched outer layers), further incorporates a circuit-deactivating layer which preferably takes the form of an abrasive substance disposed in a suitable binder. The resulting layer can then operate to mechanically deactivate the tag by damaging at least a portion of the resonant circuit which comprises the tag due to movement of the article in subsequent use. The field-sensitive tag of the present invention is advantageously applied to footwear in regions where flexure of the tag can be anticipated, preferably in the sole, making the article well suited to placement in a self-service retail setting while maintaining an adequate degree of security.
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Citations
20 Claims
- 1. For use in an electronic security system, a field-sensitive tag comprising a resonant circuit, and a deactivating layer in contact with at least portions of said resonant circuit and incorporating means for physically opening a portion of said resonant circuit in contact with said deactivating layer.
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5. The tag of claim wherein said resonant circuit further incorporates means for deactivating said resonant circuit responsive to an applied field.
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15. A method for protecting an article using an electronic security system, comprising:
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providing a field-sensitive tag including a resonant circuit, and a deactivating layer in contact with at least portions of said resonant circuit and incorporating means for physically opening a portion of said resonant circuit in contact with said deactivating layer; positioning said field-sensitive tag within portions of said article to be protected; and deactivating said field-sensitive tag following a purchase of said article by physically opening said portion of the resonant circuit in contact with the deactivating layer. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification