Hybrid inflator with tortuous delivery passage

Land vehicles – Wheeled – Attachment

Patent

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Details

280741, 102530, 222 3, B60R 2126

Patent

active

054235707

ABSTRACT:
A hybrid inflator for a vehicle passenger restraint system comprises a center tie having upper and lower ends, and a curved, continuous vessel wall secured to the upper and lower ends of and surrounding the center tie to define a pressure chamber storing inert compressed gas. The center tie defines a combustion chamber extending from the lower end thereof, the combustion chamber receiving pyrotechnic gaseous heat source material and a squib for igniting it. The center tie further defines a directional inlet port extending from the combustion chamber into the pressure chamber and a rupturable diaphragm seals the inlet port until ignition of the pyrotechnic generant. The center tie also defines a directional outlet vent extending from the pressure chamber adjacent the upper end of the center tie, the directional outlet vent being oriented substantially opposed the inlet port. The outlet vent is part of an outlet passage from the pressure chamber through the upper end of the center tie, including an orifice cavity and outlet orifice, oriented to provide further turns in the gas flow path. A rupturable diaphragm seals the outlet passage until ignition of the gas generant. A diffuser provides an additional change of direction of the outlet path.

REFERENCES:
patent: 3618981 (1971-11-01), Leising et al.
patent: 4830401 (1989-05-01), Honda
patent: 5060973 (1991-10-01), Giovanetti
patent: 5184846 (1993-02-01), Goetz
patent: 5199740 (1993-04-01), Frantom et al.
patent: 5226668 (1993-07-01), Delonga-Imik et al.
patent: 5360232 (1994-01-01), Lowe et al.
patent: 5362099 (1994-11-01), Fohl

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