Patent ID: 6053256
Filing Date: 2000-04-25
Classification: A62C,Y10T

Abstract:
A fire extinguishing system comprising:a high rate discharge chamber for discharging a fire extinguishing agent at a high rate to quickly extinguish a fire in a confined area;a metering chamber for discharging the fire extinguishing agent at a low rate to prevent said fire from reigniting;a check valve located in a first passage connecting said chambers, said check valve permitting flow of the agent from the high rate discharge chamber to the metering chamber, but preventing flow from the metering chamber to the high rate discharge chamber when the pressure in the metering chamber exceeds the pressure in the high rate discharge chamber;an orifice located in a second passage connecting said chambers, said orifice metering flow from the metering chamber to the high rate discharge chamber when the pressure in the metering chamber exceeds the pressure in the high rate discharge chamber; anda discharge outlet connected to said high rate discharge chamber, through which the fire extinguishing agent exits to the confined area.