Flash type sprinkler head

Details Flash type sprinkler head Flash type sprinkler head

1984-06-20

1987-03-24

Peters, Jr., Joseph F.

Fire extinguishers

Sprinkler heads

Collapsible strut

169 42, A62C 3712, A62C 3730

Patent

active

046518320

ABSTRACT:
A flash type sprinkler head which includes a main body including an upper portion for connection to a water pipe and a lower portion having an outlet, a valve member which includes a valve cap and a gasket for releasably closing the outlet, a heat sensitive member which disassembles in response to the heat of a fire, a guide pin mounted on the heat sensitive member received in a lower end of the valve member, a frame screwably fixed to the main body, surrounding the outlet and the valve member, the frame supporting the heat sensitive member on a step portion formed on a lower inner surface thereof, a spring between the guide pin and the heat sensitive member which presses the valve member upward to seal the outlet in response to upward pressure applied by the frame through the heat sensitive member, and a heat conductive plate which protectively surrounds the heat sensitive member. The plate is separated from the frame by only a slight gap so as to abut the lower end of the frame if impacted from below. The heat sensitive member includes a fusible segment between a head portion and a cylinder which flows out from the cylinder when it melts.

REFERENCES:
patent: 313724 (1885-03-01), Granger
patent: 2004833 (1935-06-01), Rowley
patent: 2553726 (1951-05-01), Rowley
patent: 3348617 (1967-10-01), Macartney
patent: 3716103 (1973-02-01), Tanaka et al.
patent: 4015665 (1977-04-01), Simons et al.

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