Automatic on-off sprinkler head

F - Mech Eng,Light,Heat,Weapons – 16 – T

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236/2

F16T 1/02 (2006.01) A62C 37/08 (2006.01)

Patent

CA 1239913

A B S T R A C T An automatic on-off fire extinguishing sprinkler head including a housing defining inlet and outlet openings; a valve retained by the housing and disposed between the inlet and outlet openings, the valve being movable between a closed position in which it prevents fluid flow between the inlet and outlet openings and an open position in which it allows fluid flow therebetween and a latch releasably latching the valve in the closed position. A release mechanism responds to a sensor by releasing the latch to allow movement of the valve means into the open position at a predetermined ambient temperature. Operatively coupled to the valve is a temperature responsive actuator shaped and arranged to allow movement of the valve into its open position in response to ambient temperatures above a given level and to force the valve into its closed position in response to ambient temperatures below the given level.

479863

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