Fire extinguishers – Processes – Of extinguishing fire
Patent
1998-07-17
2000-04-25
Brinson, Patrick
Fire extinguishers
Processes
Of extinguishing fire
169 9, 169 28, 169 54, 169 61, 169 62, 1375133, 2441292, A62C 200, A62C 300
Patent
active
060532564
ABSTRACT:
A method for extinguishing fires in aircraft cargo spaces includes two pressure chambers separated by an annular boss which houses a restricting orifice and a check valve assembly. A lower chamber acts as a high rate discharge fire extinguisher and the upper chamber acts as a metering fire extinguisher. Upon receipt of an activation command from the cockpit, all the agent contained in the high rate discharge chamber is emptied within seconds. At the same time, the pressurized agent contained in the upper chamber pushes the check valve to a closed position and allows the agent in the metering chamber to flow through the orifice of the restrictor at a predetermined rate. With the properly sized orifice, the agent in the upper chamber will be emptied at a rate that lasts for the needed duration of the aircraft fire protection system.
REFERENCES:
patent: 4011911 (1977-03-01), Gow
patent: 4299289 (1981-11-01), Kato
patent: 4319640 (1982-03-01), Brobeil
patent: 4328867 (1982-05-01), Heath
patent: 4643260 (1987-02-01), Miller
patent: 4715448 (1987-12-01), McCulloch
patent: 5038867 (1991-08-01), Hindrichs et al.
patent: 5183116 (1993-02-01), Fleming
patent: 5232053 (1993-08-01), Gillis et al.
Prior product mentioned on p. 1 of application.
Brinson Patrick
Ganey Steven J.
Pacific Scientific Company
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