Airbag inflators employing coated porous substrates
AssigneeMorton International, Inc.
InventorsDavid D. Schroeder, Brett Hussey, Walter A. Moore
Life of this patent
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Abstract
A hybrid inflator has porous substrate coated with a heat-producing, essentially non gas-producing composition for heating pressurized inflation gases in the inflator.
Claims20
In a hybrid airbag inflator having a heat-producing, non gas-producing composition present for heating stored pressurized inflation gases in said inflator, the improvement comprising the heat-producing, essentially non gas-producing composition being present in the inflator as a coating on a porous substrate.
In a hybrid airbag inflator having a heat-producing non gas-generating composition present for heating stored pressurized inflation gases in said inflator, the improvement comprising the heat-producing, essentially non gas-producing composition being present in the inflator as a coating on a porous metal or ceramic substrate and the heat-producing, non gas-producing composition is a thermite composition comprising:
- (a) about 26.94 weight percent aluminum metal powder fuel having a particle size of from about 5 to about 30 microns,
- (b) about 61.06 weight percent ferric oxide oxidizer having a particle size of from about 0.1 to about 3 microns,
- (c) about 10.00 weight percent hydrated calcium sulfate binder, and
- (d) about 2.00 weight percent potassium perchlorate as a supplemental oxidizing agent.
In a hybrid airbag inflator having a heat-producing non gas-generating composition present for heating stored pressurized inflation gases in said inflator, the improvement comprising the heat-producing, essentially non gas-producing composition being present in the inflator as a coating on a porous metal or ceramic substrate and the heat-producing, non gas-producing composition is a thermite composition comprising:
- (a) about 27.00 weight percent aluminum metal powder fuel having a particle size of from about 5 to about 30 microns,
- (b) about 61.00 weight percent ferric oxide oxidizer having a particle size of from about 0.1 to about 3 microns,
- (c) about 10.00 weight percent hydrated calcium sulfate binder, and
- (d) about 2.00 weight percent potassium perchlorate as a supplemental oxidizing agent.
Dependencies are inferred from the claim text.