Patent ID: 8657333

Claim:
An inflator device for an airbag, comprising: a housing comprising an initiator device in actuating proximity to a fuel-rich gas generant grain comprising at least one flow channel, wherein the fuel-rich gas generant grain produces a combustion gas to inflate the airbag and has an equivalence ratio of greater than or equal to about 1.33 to less than or equal to about 1.8, wherein the housing further comprises a chamber storing a pressurized gas comprising at least one gaseous oxidizer capable of reacting with a component contained in or generated by the fuel-rich gas generant grain; and a temporary closure disposed in the housing to restrict fluid communication between the chamber and the airbag, wherein upon actuation, the initiator device generates a shock wave that propagates through said at least one flow channel of the fuel-rich gas generant grain so as to open the temporary closure to permit fluid communication between the chamber and the airbag.