Automatically and manually controlled fire extinguisher

Details Automatically and manually controlled fire extinguisher Automatically and manually controlled fire extinguisher

1977-01-19

1978-07-04

Saifer, Robert W.

Fire extinguishers

Portable vessels

Gas pressure

169 42, A62C 3712, A62C 2302

Patent

active

040983439

ABSTRACT:
A thermally responsive valve is connected to a fire extinguisher between a pressure gauge and an extinguisher outlet to which such gauge would normally be secured. The valve includes a fitting having a passage extending therethrough so that pressure in the extinguisher may be sensed and displayed by the gauge. Detachably mounted to the fitting is a spray head having a port communicating with the passage, the port being normally sealed by a heat collecting disc. The disc is fused to the spray head by fusible material and when the environment surrounding the extinguisher reaches a predetermined temperature, the fusible material will melt thereby releasing the disc from sealing the port. The extinguisher's pressurized contents are then automatically expelled through the port for extinguishing a fire.

REFERENCES:
patent: 1510649 (1924-10-01), Boyce
patent: 2070942 (1937-02-01), Engard et al.
patent: 2526159 (1950-10-01), Rowley
patent: 2824614 (1958-02-01), Bowman
patent: 3010520 (1961-11-01), Seaberg
patent: 3719231 (1973-03-01), Haggard

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