Theft-detection wafer attachment system including shield member

Details Theft-detection wafer attachment system including shield member Theft-detection wafer attachment system including shield member

1985-10-11

1987-09-22

Wise, Robert E.

Communications: radio wave antennas

Antennas

With housing or protective covering

340572, H01Q 140

Patent

active

046958452

ABSTRACT:
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.

REFERENCES:
patent: 4156302 (1979-05-01), Van Niel
patent: 4187509 (1980-02-01), Weiner
patent: 4253084 (1981-02-01), Topputo
patent: 4590461 (1986-05-01), Cooper

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