Adjustable performance hybrid inflator

Details Adjustable performance hybrid inflator Adjustable performance hybrid inflator

1996-02-15

1997-09-09

Ellis, Christopher P.

Land vehicles

Wheeled

Attachment

280741, 280737, B60R 2126

Patent

active

056648022

ABSTRACT:
A hybrid inflator includes a pressure bottle containing compressed gas, combustible propellant for augmenting the stored gas and defining an outlet for delivering inflation gas from the inflator to a primary airbag cushion. The hybrid inflator further includes a vent opening defined as a second outlet from the pressure bottle for releasing stored compressed gas therefrom and a rupturable diaphragm positioned to seal the vent and prevent premature flow from the vent opening. A controller provides a signal for operating a squib for opening the primary outlet means and igniting the combustible propellant, and another signal for operating a squib rupturing the diaphragm covering the vent opening. The vent opening may be opened first to vent gas from the pressure bottle in advance of opening the primary outlet, may be opened with or after the primary outlet, or not at all. The vented gas is variously used for a soft onset of inflation of the primary airbag cushion, for inflation of an additional airbag cushion including a knee bolster, or the gas is dispersed.

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