Filter means for a multistage gas generator for air bag and air bag apparatus

摘要

A filter means (350) for a gas generator for an air bag which is a cylindrical filter means disposed in a housing of the gas generator for the air bag for purifying and/or cooling an activation gas for expanding the air bag, wherein one or both of axial end surfaces (351) of the filter means are formed as inclining end surfaces which get narrower and inclined in the axial extending direction and the interior angle (&thetas;) with respect to the inner peripheral surface is an acute angle.