Patent ID: 6491321
Filing Date: 2002-12-10
Classification: B01D,B60R

Abstract:
A gas generator for an air bag, comprising:a housing provided with a gas discharge port, the housing having a top plate, a bottom plate, and a cylindrical wall provided between the top plate and the bottom plate; cylindrical filter means, provided inside the housing, for at least one of purifying and cooling combustion gas generated by combustion of gas generating agents, at least one end of the filter means having an inclining end surface such that a height of the filter means decreases as a distance from a central axis of the filter means in a radial direction thereof increases, an outer peripheral surface of the filter means and an inner surface of the cylindrical wall defining a plenum; and a supporting portion formed inside the housing and having an inclining surface substantially parallel to the inclining end surface of the filter means, the supporting portion engaging with the inclining end surface such that the plenum is maintained even when the filter means is urged to expand in the radial direction by the combustion gas.