초록 ▼

A two-part igniter for inflators used to inflate inflation devices such as air bags, lift rafts, slide chutes, and the like which includes a heterogeneous mixture of an ignition material and a consolidated mass of either i) a pyrotechnic component or ii) a composite propellant. The ignition material

A two-part igniter for inflators used to inflate inflation devices such as air bags, lift rafts, slide chutes, and the like which includes a heterogeneous mixture of an ignition material and a consolidated mass of either i) a pyrotechnic component or ii) a composite propellant. The ignition material can be in a granular form or pelletized. The pyrotechnic component or composite propellant is provided as a pellet which is in immediate contact with the ignition material. The pyrotechnic component or composite propellant lowers the auto-ignition temperature of the two-part igniter. The two-part igniter can be used in inflators which generate all inflation gases from gas-generating compositions and in inflators which include a supply of stored pressurized inflation gases.

대표청구항 ▼

[ What is claimed is:] [1.] A two-part igniter comprising a heterogeneous combination of:an ignition material having an auto-ignition temperature, T'.sub.ig ; anda consolidated mass of a component which provides the two-part igniter with an auto-ignition temperature, T.sub.ig such that T.sub.ig is l

[ What is claimed is:] [1.] A two-part igniter comprising a heterogeneous combination of:an ignition material having an auto-ignition temperature, T'.sub.ig ; anda consolidated mass of a component which provides the two-part igniter with an auto-ignition temperature, T.sub.ig such that T.sub.ig is less than T'.sub.ig ; wherein said component which provides said two-part igniter with an auto-ignition temperature T.sub.ig comprises a composite propellant which has a minimum weight of about 25 mg and includes about 50-92 weight percent of an oxidizer, about 8-40 weight percent of a metal fuel component, and about 0.1-5 weight percent of a catalyst, wherein:said oxidizer is selected from potassium perchlorate, sodium perchlorate, ammonium perchlorate, and mixtures thereof;said metal fuel component is selected from the group consisting of aluminum, zirconium, magnesium, and mixtures thereof;said catalyst comprises an iron oxide.