On-off sprinkler head having an offset drive motor

Details On-off sprinkler head having an offset drive motor On-off sprinkler head having an offset drive motor

1979-03-08

1981-03-31

Spar, Robert J.

Fire extinguishers

Automatic valves

137 79, 169 90, 236100, 239 75, A62C 3706

Patent

active

042587956

ABSTRACT:
An on-off sprinkler head for fire extinguishing systems comprises a housing having a central cavity with an inlet aperture and a discharge orifice disposed at opposing ends thereof in an aligned orientation. A reciprocating valve having a valve head, a mating seat, and a stem is mounted axially in the central cavity, and controls the flow of fire extinguishing fluid therethrough. A temperature responsive, on-off drive motor is connected with the free end of the valve stem, and reciprocates the valve head with respect to the valve seat in response to selected temperature changes. The drive motor is mounted in the housing in a position axially offset from the aligned inlet aperture and discharge orifice, whereby during a discharge condition, the fire extinguishing fluid flows substantially unimpeded through the valve, and a solid, uninterrupted stream of fluid is emitted from the discharge orifice. The valve includes a deflector plate on which the fluid stream impinges and is dispersed into a spray.

REFERENCES:
patent: 2155990 (1939-04-01), Hodgman, Jr.
patent: 2291818 (1942-04-01), Loepsinger
patent: 2768696 (1956-10-01), Sherburne
patent: 3007528 (1961-11-01), Gloeckler
patent: 3257573 (1966-05-01), Miller et al.
patent: 3734191 (1973-05-01), Johnson et al.
patent: 3874455 (1975-04-01), Klesow
patent: 4089461 (1978-05-01), Gocke

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