Automatic sprinkler head

Details Automatic sprinkler head Automatic sprinkler head

1989-12-07

1991-04-30

Basinger, Sherman D.

Fire extinguishers

Sprinkler heads

169 90, A62C 3708

Patent

active

050109596

ABSTRACT:
An automatic sprinkler head comprising a body with a passageway for fire-extinguishing fluid, a frame extending from the body having a deflector plate opposite the passageway, a closure assembly (including a closure thimble) for closing the passageway, a thermally responsive glass bulb interposed between the closure assembly and the deflector plate, and a means to minimize lodgement of the closure assembly. The means to minimize lodgement of the closure assembly is interposed between the glass bulb and the closure thimble. The means to minimize lodgement is preferably an underground spiral spring and causes the closure assembly and any glass bulb fragments to tumble away from the axis of the passageway when the glass bulb fractures, thus minimizing the possibility of the closure assembly and glass bulb fragments becoming lodged against the deflector plate.

REFERENCES:
patent: 1996077 (1935-04-01), Loepsinger
patent: 2519704 (1950-08-01), Rowley
patent: 2528063 (1950-10-01), Loepsinger
patent: 2768696 (1956-10-01), Sherburne
patent: 3223171 (1965-12-01), DeGroot et al.
patent: 4108247 (1978-08-01), Mohler
patent: 4167974 (1979-09-01), Job
patent: 4830115 (1989-05-01), Polan

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