POWDER-TYPE MINI-FIRE EXTINGUISHER Russian patent published in 1997 - IPC

FIELD: fire safety, in particular, manufacture of fire-fighting equipment designed for extinguishing of fires of solid and liquid substances, electric installations under voltage up to 1000 V, automobiles, tele- and radio apparatuses at initial stage of fire development indoors and outdoors. SUBSTANCE: propellant charge is used in the form of system of located in succession: vent bushing, igniting compound ST (85-88 mas.% of Pb₃O₄ and 12-26 mas.% of Ti) and nitrogen-generating compound (64.5 ± 3 mas.% of NaN₃ and 36 ± 3 mas. % of Fe₂O₃) taken in ratio of (1-1.5):(1.5-2.5). EFFECT: higher efficiency. 1 dwg , 1 tbl