Autoignition material additive
AssigneeTRW Inc.
InventorTimothy A. Swann
Life of this patent
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Abstract
An apparatus (12) for inflating an inflatable vehicle occupant protection device (14) comprises an inflator housing (20). A gas generating material (18) is within the inflator housing (20). The gas generating material (18), when ignited, generates a gas for inflating the vehicle occupant protection device (14). An autoignition material (24) is provided for igniting the gas generating material (18). The autoignition material (24) comprises an additive that has a ratio of absorptivity of incident radiation to emissivity of internal energy by radiation of at least about 10.
Claims6
An autoignition material for igniting a gas generating material, said autoignition material comprising an intimate mixture of an oxidizer, a fuel, and an additive, said additive having a ratio of absorptivity of incident radiant energy to emissivity of internal energy by radiation of at least about 10, wherein the amount of additive is that amount effective to improve the radiant energy absorption of said autoignition material and wherein said additive is selected from the group consisting of nickelic oxide (Ni2O3), chromium dioxide (CrO2), and cobaltic oxide (Co2O3), the autoignition temperature of said autoignition material being from about 150° C. to about 175° C.
An autoignition material for igniting a gas generating material, said autoignition material comprising an intimate mixture of an oxidizer, a fuel, and an additive, said additive having a ratio of absorptivity of incident radiant energy to emissivity of internal energy by radiation of at least about 10, wherein the amount of additive is that amount effective to improve the radiant energy absorption of said autoignition material, wherein said additive consists of nickelic oxide (Ni2O3), the autoignition temperature of said autoignition material being from about 150° C. to about 175° C.
Dependencies are inferred from the claim text.