Automatic on-off fire protection sprinkler

Details Automatic on-off fire protection sprinkler Automatic on-off fire protection sprinkler

1994-08-01

1996-07-09

Hoge, Gary C.

Fire extinguishers

Sprinkler heads

Shut off valve

169 38, A62C 3568

Patent

active

055335764

ABSTRACT:
A fire protection sprinkler is coupled to a pressurized fire extinguishing fluid supply line and positioned generally above a predetermined area to be protected against damage by fire. The sprinkler has a body with an inlet and at least one outlet, a divider defining bias and outlet chambers within the body, and a pilot valve assembly, forming an integral part of the body, is in communication with the bias chamber. The divider has a first "off" position substantially preventing fluid from exiting the outlet chamber and a second "on" position allowing fluid flow from the outlet chamber to be distributed over the area being protected. The pilot valve assembly includes a thermally responsive sensing element, e.g. a bimetal snap disc, disposed in a relatively horizontal plane generally below a main portion of the body for exposure to heat from all regions of the predetermined area to be protected by the sprinkler device.

REFERENCES:
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patent: 2230179 (1941-01-01), Cid
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patent: 3757866 (1973-09-01), Mears et al.
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patent: 3848676 (1974-11-01), Doherty, Jr.
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patent: 3911940 (1975-10-01), Johnson
patent: 4258795 (1981-03-01), Hansen
patent: 4368782 (1983-01-01), Bray
patent: 4553602 (1985-11-01), Pieczykolan

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