Fire extinguishers – Automatic valves
Patent
1989-02-28
1990-07-03
Basinger, Sherman D.
Fire extinguishers
Automatic valves
169 37, 169 57, A62C 3710
Patent
active
049382926
ABSTRACT:
A fire sprinkler head including a tubular body defining an inlet adapted for connection to a supply of pressurized fire extinguishing fluid, an outlet adapted for placement in a fire protected zone, and a cylindrical inner wall extending between the inlet and outlet and defining an annular recess; and a valve comprising a piston and a cup-shaped gasket retained by and mounted for movement within the body from a closed position to an open position and providing in the closed position a fluid tight seal between the inlet and the outlet and allowing in the open position fluid flow therebetween; the cup-shaped gasket comprising a bottom portion for receiving a force for inducing the gasket movement and produced by pressurized fluid at the inlet, an annular skirt portion having one end joined to the bottom portion and an opposite end retained by the piston, and an annular lip portion extending outwardly from the skirt portion and received by the annular recess so as to form a fluid tight seal therewith. Also included is a locking mechanism retained by the valve and movable between an engaged position and a disengaged position, the locking mechanism being shaped and arranged in the engaged position to exert on the cup-shaped gasket a locking force retaining the annular lip portion within the annular recess to thereby prevent relative movement therebetween.
REFERENCES:
patent: 2211399 (1940-08-01), Winslow
patent: 3080000 (1963-03-01), Gloeckler
patent: 3459266 (1969-08-01), Ault
patent: 3714989 (1973-02-01), Gloeckler
patent: 4117887 (1978-10-01), Anderson
patent: 4465141 (1984-08-01), Johnson
patent: 4830118 (1989-05-01), Capasso
Avila Stephen P.
Basinger Sherman D.
Jarcho Harold G.
Toupal John E.
U.S. Fire Control Corporation
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