Portable breakaway alarm system

Claim 1

An alarm system comprising: a) a first element having a first sidewall and having a magnet generating a magnetic:field associated therewith, said magnet being located immediately adjacent to said first sidewall; b) a second element having a second sidewall and having a metallic magnetically attractable material located immediately adjacent to said second sidewall; c) alignment means associated with both said first and second sidewall comprising first and second rodlike extension attached to and extending from one of said first and second sidewalls in spaced apart relation in the direction of said other sidewall, and said other sidewall having first and second corresponding openings for receiving respective rodlike extensions whereby, said first and second elements are interlocked with said first and second sidewalls held side by side by the attraction between said magnet and said magnetic material; d) alarm means associated with said second element and operable in response to physical separation of said first and second elements which results in a reduction of the magnetic field generated by said magnet said alarm means comprising: i) an electrical circuit including a source of power; ii) a switch means connected in said circuit and located immediately adjacent said second sidewall and within the magnet field of said magnet when said first and second elements are interlocked, said switch means being adapted to assume a first state when within said magnetic field, and to assume a second state when outside magnet field; and iii) an audible alarm connected to said switch means for sounding an alarm when said switch means assumes said second state; e) means for securing at least said second element to an object; and f) arming means comprising one of a keypad and keyed lock connected with said electrical circuit for permitting operation of said audible alarm only upon actuation of said arming means.