Patent ID: RE41793

Claim:
A security switch assembly comprising: an enclosure made of non-ferromagnetic material mountable to a sliding door track rail having a bolt-receiving aperture therein, said enclosure having at least one opening therein, alignable with said aperture, through which a ferromagnetic locking bolt, which has engaged said aperture, may be reversably reversibly inserted; a reed switch and a magnet, both of which are mounted within said enclosure, said switch and said magnet being positioned sufficiently near one another on opposite sides of said opening so that the locking bolt, when inserted through said opening, prevents the magnetic field generated by the magnet from acting on the reed switch ; and means for mounting the switch assembly on a rail of a sliding door track such that said at least one opening in said enclosure is aligned with a bolt - receiving aperture in said rail, said means comprising a mounting flange portion and a bolt receiving portion that facilitates mounting of said enclosure to at least a side of said door track rail .