Patent ID: 8714590
Filing Date: 2014-05-06
Classification: B60R

Abstract:
1. A gas generator for a restraining device, comprising: a housing including a diffuser shell having a top plate and a gas discharge port, and a closure shell having a bottom plate and attached to the diffuser shell, an inner surface of the top plate being a top surface and an inner surface of the bottom plate being a bottom surface, an inner tube disposed in the housing, the inner tube defining therein an ignition device chamber in which an ignition device is accommodated, and defining outside thereof a combustion chamber in which a gas generating agent is accommodated, an opening on one end of the inner tube being fixed to the bottom surface and another end of the inner tube being directly fixed to or formed integrally with the top surface, the inner tube further including: a flame-transferring hole being formed in a circumferential wall portion to communicate the ignition device chamber with the combustion chamber, and a reduced strength portion being provided in the circumferential wall portion between the flame-transferring hole and the top surface, such that the reduced strength portion is cleaved only when an internal pressure of the housing is higher than a designed pressure.