Hybrid inflator having movable piston for releasing pressurized

Land vehicles – Wheeled – Attachment

Patent

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Details

222 5, B60R 2126

Patent

active

052733122

ABSTRACT:
An inflator assembly inflates a vehicle occupant restraint. The inflator assembly includes a container in which gas is stored under pressure. An ignitable material is disposed within the container. An actuator assembly is provided to release the stored gas from the container and to ignite the ignitable material. The actuator assembly includes a pyrotechnic charge of ignitable material which burns to move a piston to rupture a portion of the container. A passage through the piston conducts a flow of combustion products resulting from ignition of the pyrotechnic charge of ignitable material to ignite the ignitable material within the container. During burning of the ignitable material, the gas in the container is heated to increase the fluid pressure in the container.

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patent: 4858951 (1989-08-01), Lenzen
patent: 4981534 (1991-01-01), Scheffee
patent: 5076607 (1991-12-01), Woods et al.

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