Key-operated, exit alarm, switch cam assembly, and...

Details Key-operated, exit alarm, switch cam assembly, and... Key-operated, exit alarm, switch cam assembly, and...

E - Fixed Constructions

05

B

340/124

E05B 17/04 (2006.01) G08B 13/06 (2006.01)

Patent

CA 1249867

A Key-Operated, Exit Alarm, Switch Cam Assembly, and Modification Kit, and Modification Method for Switch Cam Assemblies Abstract of Disclosure The assembly, in a first embodiment thereof, comprises an annular cam retainer which is rotatably journalled on the mortise cylinder of an exit alarm unit, and has a limb disposed for movement by the tailpiece of the mortise cylinder for engagement with a bearing surface on the rotary, switch cam of the assembly. The cam retainer retains the rotary, switch cam in an alarm-silenced position while the key may be rotated in its key cylinder to a disengageable position and removed. The modification kit comprises a cam retainer (i.e., an unthreaded annulus, in one embodiment) required for modifying a key-operated, exit alarm, switch cam assembly to enable removal of the key with the alarm in a silenced position as aforesaid. The modification method sets forth the precedural steps in retrofitting a switch cam assembly with such a modification kit. - 1 -

516843

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