G - Physics
08
B
340/125, 340/191
G08B 13/02 (2006.01) H01H 13/20 (2006.01) H01H 27/00 (2006.01)
Patent
CA 1155944
ALARM SWITCH ABSTRACT OF THE DISCLOSURE An alarm switch includes a hollow casing having a keyhole and a finger opening formed therein, at least one electrical switch mounted in the casing having a spring loaded actuation pin, a reversible cam pivotably mounted in the casing for movement between a first position, in which it is held in biased engagement with the switch pin so as to maintain the pin in a retracted biased state, and a second release position, in which it is disposed in a substantially non-engaging position with said pin so as to permit extension of said pin and triggering of an alarm signal by the electrical switch, a block slidably mounted in the casing having at least one latch lug which, in a first position of the block, maintains the cam in biased engagement with the switch pin and, in a second position of the block, releases the cam to permit movement to its release position so as to thereby activate the alarm. The cam has a bevelled end face and is removably mounted in said casing to permit mounting thereof with its bevelled end face directed towards or away from the actuation pin. Depending upon the cam disposition, the switch will function as either a momentary or latching switch. Depending on the block position, the switch will function as a finger operated or trip wire operating switch.
367842
Mcfadden Fincham
Walter John W.
LandOfFree
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