Gas generating material
AssigneeTRW Automotive Products, 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 restraint 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 20 to 50% by weight of an alkali metal azide, 25 to 35% by weight of an inorganic oxidizer, 10 to 15% by weight of a fluoroelastomer binder, 15 to 25% by weight of magnesium, and 1 to 3% by weight of fumed silicon dioxide. The coating may also include 1 to 6% by weight of graphite as a roughening agent.
Claims8
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;
- 20 to 50% by weight of an alkali metal azide,
- 25 to 35% by weight of an inorganic oxidizer,
- 10 to 15% by weight of a fluoroelastomer binder,
- 15 to 25% by weight of magnesium, and
- 1 to 3% by weight of fumed silicon dioxide.
Dependencies are inferred from the claim text.