Theft alarm for portable articles
First Claim
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1. A theft preventing alarm device for a valuable article, comprising:
- motion sensing means for sensing movement of said valuable article and generating an alarm actuating signal in response to said movement,alarm means, connected to said motion sensing means, for generating an alarm signal upon receiving said alarm actuating signal,a pair of pivotable clamping jaws variably spaced apart to secure said device to said valuable article,retaining means for releasably retaining said jaws in a predetermined spaced relationship, andlock means for both arming said alarm means and actuating said retaining means.
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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.
34 Citations
15 Claims
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1. A theft preventing alarm device for a valuable article, comprising:
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motion sensing means for sensing movement of said valuable article and generating an alarm actuating signal in response to said movement, alarm means, connected to said motion sensing means, for generating an alarm signal upon receiving said alarm actuating signal, a pair of pivotable clamping jaws variably spaced apart to secure said device to said valuable article, retaining means for releasably retaining said jaws in a predetermined spaced relationship, and lock means for both arming said alarm means and actuating said retaining means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification