Locking mechanism for quick response fire sprinkler

Details Locking mechanism for quick response fire sprinkler Locking mechanism for quick response fire sprinkler

1995-08-15

1997-03-25

Pike, Andrew C.

Fire extinguishers

Sprinkler heads

Collapsible strut

169 42, A62C 3711

Patent

active

056135637

ABSTRACT:
A locking mechanism for a quick response fire sprinkler includes an arcuate leaf spring having an inherent radially inwardly directed biasing force being split to provide spaced end portions. A circumferentially extending detent is provided in the peripheral face of the arcuate leaf spring for engaging a circumferential groove provided in the sprinkler valve housing. A fusible temperature responsive element is inserted between the spaced ends of the arcuate spring for spreading the arcuate spring and associated detent radially outwardly into the circumferential groove for holding the sprinkler valve in the closed position. When the temperature responsive element becomes fused, the arcuate leaf spring is retracted radially inwardly from the valve housing allowing the sprinkler valve to open.

REFERENCES:
patent: 4465141 (1984-08-01), Johnson
patent: 4508175 (1985-04-01), Pieczykolan
patent: 4618002 (1986-10-01), Mears
patent: 4664198 (1987-05-01), Johnson
patent: 4766961 (1988-08-01), Macie
patent: 4977963 (1990-12-01), Simons

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