| abstract |
An inflator (20) delivering gases to an inflatable member (60), such as used in an inflatable seat belt or air bag includes an inner member (22), preferably a flexible non-metallic tube, that confines a propellant. An ignition assembly (40) ignites the propellant using a pressure wave that propagates along the length of the propellant within the inner member (22). Inflation gases are generated from combustion of the propellant and pass through the tube (22) that confines the propellant. The inflation gases then enter an outer member (50), preferably a flexible, non-metallic member, that covers the inner member and effectively functions as a manifold. Inflation gases are metered through the outer member (50) to fill the inflatable member (60). The inflator may be adapted for use in a variety of applications, including passenger and driver side air bags, head bags in roof rails, air bags in knee bolsters, side impact trim air bags, and external pedestrian air bags. |