Patent ID: 7540306

Claim:
A method of charging an interior of a gas generator with a pressurized gas, the gas generator having a pressurized gas chamber having a pressurized gas chamber housing charged with the pressurized gas therein, a gas generating chamber housing connected to a first opening portion of the pressurized gas chamber housing, and a diffuser portion, having a gas discharge port, being connected to a second opening portion of the pressurized gas chamber housing, no charging hole for charging the pressurized gas being provided in the pressurized gas chamber housing before charging the pressurized gas, comprising: connecting one of the gas generating chamber housing and the diffuser portion to the first opening portion of the pressurized gas chamber housing and sealing the first opening portion; disposing the gas generating chamber housing or the diffuser portion, that is not connected in the connecting step, in the vicinity of the second opening portion of the pressurized gas chamber housing so as to form a gap serving as a gas charging hole; providing a contact surface that contacts the pressurized gas chamber housing and a non-contact surface that does not contact the pressurized gas chamber housing, in one of the gas generating chamber housing and the diffuser portion, on a part thereof which serves as a joint portion with the pressurized gas chamber housing, placing the contact surface in contact with the pressurized gas chamber housing and charging the pressurized gas through the gap defined by the non-contact surface up to a predetermined pressure; and attaching and fixing the unconnected gas generating chamber housing or diffuser portion to the pressurized gas chamber housing to seal the gap.