Gas generator useful in vehicle occupant restraint system includes housing in which first and/or second parts have designed spacers that maintains minimum value of flow area in case of relative movement of parts with respect to each other

摘要

A gas generator (10) comprises a housing (20) with two radially symmetrical housing parts (22, 24), which are movable relative to each other under pressure and form an overflow opening with a variable flow area depending on pressure in the housing. The first and/or second housing parts have spacing elements (44) designed to maintain a minimum value of the variable flow area in case of relative movement of the parts with respect to each other. The spacing elements are constructed as beads, grooves or ribs.