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US 4,695,845 AGranted
Theft-detection wafer attachment system including shield member
OwnerEarl H. Hildtinventor
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OwnerEarl H. Hildtinventor
Estimating the term…
A theft-detection wafer attachment system that increases the tamper-resistance of theft-detection wafers used in the retail apparel industry includes a disc-like theft-detection wafer of the type having a central projection for receiving a tack-like fastener and a concentric ridge that surrounded the projection. A shield member is mounted over the projection and includes a counterbore for receiving a tack-like fastener. The outside diameter of the shield member is less than the diameter of the concentric ridge to eliminate the opportunity to use the ridge as a fulcrum for prying the secured fastener from the wafer. Additionally, the counterbore receives the head of the fastener to deny access to the fastener head with a prying tool. The exposed portions of the shield member are preferably formed with tapered surface to prevent gripping with conventional gripping tools.
A theft-prevention wafer attachment system, comprising:
A theft-detection wafer attachment system, comprising:
A shield member for use with theft detection wafers and fasteners, the wafers of the type having a projection with a shank-receiving bore and a concentric ridge that surrounds the projection, a shank-locking means for releasably engaging a shank inserted into the shank-receiving bore, and means for responding in a predetermined manner to an interrogation field, the fastener of the type having a head and a pointed shank attached to the head, the shield member comprising:
Dependencies are inferred from the claim text.