Abstract: An inflator 10 of a vehicle occupant protection system contains an elongated housing 12 having a plurality of gas exit orifices 14 spaced along the length thereof. An ignition body 30 and propellant 16 are provided in lengths substantially equivalent to the length of the housing 12 wherein the ignition body 30 is placed in physical contact with the propellant body 16 for all or most of their respective lengths. Once the ignition body 30 is ignited upon a crash event, resultant uniform ignition and combustion across the length of the propellant 16 results in uniform gas generation and uniform inflation of an airbag 26, wherein the airbag 26 is at least substantially coextensive with and in fluid communication with the housing 12. Preferred mixtures of propellant 16 contain silicone, a perchlorate oxidizer, and a coolant.

Abstract: The present invention provides an inflator 10 for an inflatable restraint system in an automobile. The inflator includes an elongate inflator body 11 having a plurality of inflation apertures 40 and defining a first combustion chamber 25 wherein a first propellant charge 28 is positioned. A partitioning assembly 26 is nested within the inflator body 11, and positioned proximate the second end 17. The partitioning assembly 26 defines a second combustion chamber 35 wherein a second propellant charge 38 is positioned. First and second initiators 12 and 9 are provided, and are selectively operable to ignite the propellant charges 28 and 38 respectively, thereby supplying an inflation gas via the first chamber 25 to an inflatable restraint cushion.

Abstract: A dual stage inflator 10 utilizes a housing 12 having two supplemental propellant combustion chambers 16 and 26, both symmetrically oriented within a primary propellant combustion chamber 34. Chambers 16 and 26 are formed to be substantially equivalent in dimensions and volume thereby simplifying the assembly and manufacturing process.

Abstract: The present invention provides an inflator 10 for an inflatable restraint system in an automobile. The inflator includes an elongate inflator body 11 having a plurality of inflation apertures 40 and defining a first combustion chamber 25 wherein a first propellant charge 28 is positioned. A partitioning assembly 26 is nested within the inflator body 11, and positioned proximate the second end 17. The partitioning assembly 26 defines a second combustion chamber 35 wherein a second propellant charge 38 is positioned. First and second initiators 12 and 9 are provided, and are selectively operable to ignite the propellant charges 28 and 38 respectively, thereby supplying an inflation gas via the first chamber 25 to an inflatable restraint cushion.