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US 4,806,180 AGranted
Gas generating material
AssigneeTRW Vehicle Safety Systems Inc.
InventorsGeorge W. Goetz, Brian K. Hamilton
Life of this patent
Estimating the term…
Abstract
Structure for generating nitrogen gas for inflating an air bag vehicle occupant resistant comprises a grain made of an azide based material which generates gas upon combustion. The grain has an ignition enhancing coating thereon consisting essentially of 30 to 50% by weight of an alkali metal azide, 40 to 60% by weight of sodium nitrate or potassium perchlorate, 5 to 15% by weight of boron, and 1 to 15% by weight of sodium silicate. The coating may also include 1 to 6% by weight of graphite fibers as a roughening agent.
Claims10
Structure for generating gas, said structure comprising:
- a grain made of an azide based material which generates gas upon combustion;
- said grain having an ignition enhancing coating thereon comprising;
- 30 to 50% by weight of an alkali metal azide, 40 to 60% by weight of an inorganic oxidizer, 5 to 15% by weight of boron, and 1 to 15% by weight of a metal silicate.
Dependencies are inferred from the claim text.