Cold deployment pyrotechnic inflator for air bag systems

Details Cold deployment pyrotechnic inflator for air bag systems Cold deployment pyrotechnic inflator for air bag systems

1996-04-10

1998-03-31

English, Peter C.

Land vehicles

Wheeled

Attachment

280741, 102531, 222 3, B60R 2126

Patent

active

057329729

ABSTRACT:
A passenger air bag inflator using pressurized inert gas upon initial deployment to provide cool gas to the folded air bag. After the bag has started to unfold, the remaining gas is provided by pyrotechnic gas generant. Pyrotechnic gas expands against a piston. The piston compresses the inert gas and forces it to exhaust from the inflator. Upon expulsion of the inert gas, the piston then becomes a filter for the pyrotechnic. The system provides a reduction in air bag stresses from fast hot gas deployments.

REFERENCES:
patent: 3756621 (1973-09-01), Lewis et al.
patent: 3786843 (1974-01-01), Stephenson et al.
patent: 5301979 (1994-04-01), Allard
patent: 5441302 (1995-08-01), Johnson et al.

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