Patent ID: 6883830
Filing Date: 2005-04-26
Classification: B60R

Abstract:
1. An inflator for inflating an air bag, comprising: an inflator housing having an opening portion at one end thereof; a diffuser portion attached to the opening portion of the inflator housing and provided with at least one gas discharging port, a ratio (A1/A2) of a total area (A1) of the at least one gas discharging port and an area (A2) of the opening portion being equal to or greater than 0.015 and equal to or smaller than 1; and a pressurized medium contained in the inflator housing, the pressurized medium consisting mainly of a mixture of helium and argon, and a coefficient of viscosity of the pressurized medium being 25 to 40 μPas at 50 MPa and at 300° K.