Anti-theft tag with conical coil

Details Anti-theft tag with conical coil Anti-theft tag with conical coil

1989-02-14

1990-07-10

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340693, G08B 1324

Patent

active

049409689

ABSTRACT:
An anti-theft tag includes two dishes (3, 4) fixed to each other. One dish (4) is provided with a feed-through hole (15) for inserting a pin (10) with a head (29). The dishes define an internal space for accomodating a releasable lock for locking the inserted pin and a circuit composed of a coil (22) and a capacitor (23). Said coil is conical and its base runs substantially parallel to the faces of the dishes.

REFERENCES:
patent: 4187509 (1980-02-01), Weiner
patent: 4590461 (1986-05-01), Cooper
patent: 4751500 (1988-06-01), Minasu et al.

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