Intrusion detecting apparatus to signal movement of a partition

Details Intrusion detecting apparatus to signal movement of a partition Intrusion detecting apparatus to signal movement of a partition

G - Physics

08

B

340/128

G08B 13/08 (2006.01) G08B 13/12 (2006.01)

Patent

CA 1060971

Abstract of the Disclosure An intrusion detecting apparatus for an alarm system to signal breakage and movement of a door, window, or other movable partition comprising an elongated member forming an interior channel in which is disposed a switch actuating element for motion into and out of cooperative relation with a switch element supported on the channel. The switch actuating element is connected to the parti- tion by a tensile member and is coupled to the elongated member by a spring so that movement of the partition from a predetermined position causes the switch actuating element to move out of coopera- tive relationship with the switch element and movement of the parti- tion back to the predetermined position restores the element to a cooperative relationship. The tensile member may include a pair of electrical conductors which are connected to a device for detecting breakage of the partition.

253493

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