Single charge pyrotechnic
AssigneeICI Americas Inc.
InventorsJohn Harold Evans, Michael Albert Lehmicke
Life of this patent
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Abstract
A single charge pyrotechnic material comprising a metal fuel, an oxidizer and a secondary fuel which can be used to control the rate of reaction of the pyrotechnic. The composition can be used as a single charge igniter in an automotive air bag system in place of the separate ignition charge and enhancer charge currently utilized.
Claims16
A single charge pyrotechnic composition comprising (a) about 5 to 55 percent by weight metal fuel selected from titanium, zirconium, magnesium, aluminum, hafnium, and chromium or combinations thereof, (b) about 35 to 80 percent by weight oxidizer selected from an alkali or alkali metal perchlorate, chlorate or nitrate, or combinations thereof, and (c) about 1 to 30 percent by weight of a secondary fuel selected from boron, silicon or carbon, or combinations thereof.
Dependencies are inferred from the claim text.