Fire extinguishers – Sprinkler heads
Patent
1981-10-13
1984-08-14
Rolla, Joseph J.
Fire extinguishers
Sprinkler heads
169 19, A62C 3708
Patent
active
044651414
ABSTRACT:
A fire sprinkler including a valve retained by a tubular body that defines an inlet for connection to a supply of pressurized fire extinguishing fluid and an outlet for placement in a fire protected zone. The valve is movable from a closed position to an open position by a primary force produced by the pressurized fluid at the inlet. In the closed position, the valve provides a fluid tight seal between the inlet and the outlet and in the open position allows fluid flow therebetween. Retained by the valve and movable therewith is a locking mechanism reciprocably movable between an engaged position and a disengaged position. The locking mechanism is adapted in the engaged position to transfer between the valve and the tubular body a substantial first component of the primary force and to thereby prevent relative movement therebetween and is adapted in the disengaged position to substantially eliminate the first component of force and thereby allow relative movement therebetween. A latching mechanism is automatically movable from a latched position to a released position in response to a predetermined condition. In the latched position the latching mechanism is adapted to retain the locking mechanism in the engaged position and to receive therefrom only a substantially reduced component of the primary force and is adapted in the released position to permit movement of the locking mechanism into the disengaged position.
REFERENCES:
patent: 278217 (1883-05-01), Brown
patent: 3001586 (1961-09-01), Kyle
patent: 3924687 (1975-12-01), Groos
patent: 4015665 (1977-04-01), Simons et al.
Compton Charles C.
Jarcho Harold G.
Rolla Joseph J.
Toupal John E.
U.S. Fire Control Corporation
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