Automatic fire extinguisher with acoustic alarm

Details Automatic fire extinguisher with acoustic alarm Automatic fire extinguisher with acoustic alarm

1983-08-31

1985-08-06

Kashnikow, Andres

Fire extinguishers

Alarms

169 26, A62C 3502

Patent

active

045329966

ABSTRACT:
An automatic fire extinguisher and alarm apparatus, particularly suitable for use with waste receptacles, which discharges fire extinguisher fluid when exposed to a fire and sounds an audible alarm. Fire extinguisher fluid is quickly discharged from a reservoir onto the fire when heat from the fire melts a fusible alloy plug. A second reservoir contains a partially gaseous alarm agent, and is connected through a valve to a vibrating diaphragm gas horn. The valve stem is connected to a diaphragm separating the two reservoirs. When pressure is lost in the first reservoir upon discharge of the fire extinguisher fluid, the pressure of the alarm agent in the second reservoir moves the diaphragm and valve stem and opens the valve, allowing alarm agent to be discharged through the gas horn, raising an audible alarm.

REFERENCES:
patent: 869415 (1907-10-01), Buell
patent: 1491301 (1924-09-01), Grafflin
patent: 1966661 (1932-11-01), Doughty
patent: 3670690 (1972-06-01), Swanson
patent: 3907037 (1975-09-01), Linsalato et al.
patent: 4034813 (1977-07-01), Le Day

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