Patent ID: 7954848

Claim:
An inflator comprising: a combustion chamber; an ignition device located inside the combustion chamber; a first gas generating charge filled in the combustion chamber for combustion, by ignition of the ignition device, to generate an inflation gas; a second gas generating charge filled in the combustion chamber at a location away from an ignition area of the ignition device, with the first gas generating charge interposed between itself and the ignition area, the second gas generating charge being slower in speed of combustion than the first gas generating charge and ignitable by a flame generated by combustion of the first gas generating charge; and a partition wall that segregates the first gas generating charge and second gas generating charge inside the combustion chamber so as to prevent the first and second charges from mixing, the partition wall being burnable to destruction by a fire built by combustion of the first gas generating charge so as to allow the fire to propagate to the second gas generating charge over a generally entire area that the partition wall bounds the first and second gas generating charges.