Theft alarm for portable articles

Details Theft alarm for portable articles Theft alarm for portable articles

1976-10-18

1977-05-10

Swann, III, Glen R.

Communications: electrical

Systems

Call station

340282, 340283, G08B 1314

Patent

active

040231577

ABSTRACT:
A theft alarm for portable articles includes a pocket-sized housing from which extend a pair of opposed, pivotting jaws. One of the jaws is secured to an extendable ratchet shaft disposed within the housing. A cam rotated by a key lock device actuates a pawl which selectively retains the ratchet to lock the jaws about the article. The cam also actuates a leaf switch which activates a motion-sensing electronic circuit. The circuit actuates a pulsating audible alarm whenever the article is moved.

REFERENCES:
patent: 2724823 (1955-11-01), Toepfer
patent: 2826656 (1958-03-01), Gordon
patent: 3327300 (1967-06-01), Birrenkott
patent: 3597753 (1971-08-01), Tabankin
patent: 3644921 (1972-02-01), Duggan et al.

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