G - Physics – 01 – P
Patent
G - Physics
01
P
G01P 13/00 (2006.01) G01P 15/135 (2006.01) G08B 13/14 (2006.01) H01H 35/14 (2006.01)
Patent
CA 2255190
The present invention provides an alarm for detecting the unauthorized movement of an object said alarm comprising a motion detection means and an audible alarm means. The motion detection means comprises a series of radially extending electrical contacts together with a peripheral electrical contact ring that encircles the perimeter of the outside edges of the radially extending electrical contacts. A metallic ball is provided within the electrical contact ring and is of sufficient size that it can roll freely within the interior of the ring. When the object to which the motion detection means is attached is stationary, the ball will tend to come to rest in a position against the contact ring while touching one or more of the radially extending contacts to form an electrical circuit. Means to detect when an electrical circuit is formed by the contact ring, ball and any radially extending contact and to detect when this circuit is broken by movement of the object. The means to detect when an electrical circuit is formed or broken preferably consists of a programmable control microprocessor and input means for programming said processor. The alarm can be attached to valuable items such as televisions, stereo systems, VCR's, video cameras, computers etc. When the alarm is armed it will sense any motion of the item to which it is attached and will sound an alarm if sufficient motion has been detected.
Blaney Mcmurtry Llp
Devine James Brian Paul
LandOfFree
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