Anti-theft vibration detector switch and system

Claim 1

A vibration detection switch comprising in combination: a circuit board having a series of alternately occuring negative and positive electrical contacts arranged in a substantially circular arrangement, a ball having an electrically conductive surface of a size such that when resting between any two consecutive ones of said negative and positive electrical contacts, the ball contacts and completes electrical circuit between the two consecutive electrical contacts, said ball being of a material conductive of magnetic flux such that the ball is magnetically responsive to lines of magnetic flux of a magnet, confining means for preventing the ball from rolling off said series on said board, a magnet having first pole thereof extending substantially transversely of said board substantially centrally of said circular arrangement such that said ball is magnetically attracted and held in contact with said two consecutive ones of said negative and positive contacts, and said confining means being positioned to substantially circumscribe said series and said ball when the ball is magnetically held by said first pole, and a magnet having a second pole of a magnetic-pole charge identical to that of the first pole, the second pole being positioned extending substantially transversely of said board substantially centrally of said circular arrangement in a position of opposing relationship to said first pole and spaced from said ball when said ball is held magnetically by said first pole such that like-pole magnetic fluxes from said first and second poles cause said ball to be repelled by the second pole toward said confining means whereby at all times of rest the ball is forced to maintain contact and completed electrical circuit with said two electrical contacts except when jolted by a vibration resulting from a blow at which time there is movement of one or the other of the circuit board and the ball relative to one another sufficient to break electrical circuitry momentarily after which magnetic flux lines promptly re-establish contact and electrical circuitry between said two electrical contacts.