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A gas generator for an air bag, in which conduction of heat generated by combustion of a gas generating agent is restricted to effectively reduce or inhibit a temperature increase of a diffuser side on an outer shell container, is provided and thus, reduces the maximum surface temperature of the dif

A gas generator for an air bag, in which conduction of heat generated by combustion of a gas generating agent is restricted to effectively reduce or inhibit a temperature increase of a diffuser side on an outer shell container, is provided and thus, reduces the maximum surface temperature of the diffuser. The gas generator includes a housing which has a diffuser shell with at least one gas discharge port and a closure shell for forming an accommodating space together with the diffuser shell and the gas generating agent, installed in the housing, ignited and burnt by an igniting unit to generate a combustion gas, wherein the gas generator further includes a heat transfer restricting member for making a conduction of heat generated by a combustion of the gas generating agent to the diffuser shell side smaller than that to the closure shell side.

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A gas generator for an air bag, in which conduction of heat generated by combustion of a gas generating agent is restricted to effectively reduce or inhibit a temperature increase of a diffuser side on an outer shell container, is provided and thus, reduces the maximum surface temperature of the dif

A gas generator for an air bag, in which conduction of heat generated by combustion of a gas generating agent is restricted to effectively reduce or inhibit a temperature increase of a diffuser side on an outer shell container, is provided and thus, reduces the maximum surface temperature of the diffuser. The gas generator includes a housing which has a diffuser shell with at least one gas discharge port and a closure shell for forming an accommodating space together with the diffuser shell and the gas generating agent, installed in the housing, ignited and burnt by an igniting unit to generate a combustion gas, wherein the gas generator further includes a heat transfer restricting member for making a conduction of heat generated by a combustion of the gas generating agent to the diffuser shell side smaller than that to the closure shell side. olling piston has reached said end position. 8. The airbag configuration according to claim 1, wherein: said gas generator has a gas generator housing; and said guide space is formed as part of said gas generator housing. 9. The airbag configuration according to claim 1, including: an airbag housing for accommodating said airbag; and said guide space is formed as part of said airbag housing. 10. The airbag configuration according to claim 1, wherein: said rolling piston has axial end regions; and pulling devices are connected to said covering device and to said axial end regions of said rolling piston. 11. The airbag configuration according to claim 10, including: a receptacle; said receptacle being configured to guide said pulling devices from said rolling piston toward said covering device; and said receptacle being configured to accommodate said covering device when said covering device is in said open position. 12. The airbag configuration according to claim 10, including: seals disposed at said guide space; and said pulling devices being led out of said guide space via said seals. 13. The airbag configuration according to claim 1, including a gas chimney operatively connected to said gas generator for conducting compressed gas from said gas generator to said airbag. 14. The airbag configuration according to claim 13, wherein said guide space for said rolling piston is disposed between said gas generator and said gas chimney. 15. The airbag configuration according to claim 13, including: an airbag housing for accommodating said airbag; said gas generator having a gas generator housing; a receptacle configured to accommodate said covering device when said covering device is in said open position; and at least one element selected from the group consisting of said gas generator housing, said airbag housing, said guide space, said receptacle and said gas chimney being an extruded part. 16. The airbag configuration according to claim 15, wherein at least two elements selected from the group consisting of said gas generator housing, said airbag housing, said guide space, said receptacle and said gas chimney are substantially formed as a single piece. 17. The airbag configuration according to claim 15, including: end plates; and said extruded part having axial ends, said end plates closing said extruded part at said axial ends. 18. The airbag configuration according to claim 1, including: a further covering device for covering said airbag, said further covering device being movable from a closed position to an open position, when the airbag configuration is triggered; and said driving device including a further rolling piston, said further rolling piston, when rolling from a starting position to an end position, moving said further covering device from said closed position into said open position. 19. The airbag configuration according to claim 18, wherein said driving device has a further guide space formed therein, said further guide space defines a rolling path for said further rolling piston. 20. The airbag configuration according to claim 18, wherein said rolling piston and said further rolling piston move in respective directions opposite from one another. 21. The airbag configuration according to claim 19, including: guide devices operatively connected to said guide space and said further guide space; and said guide devices, when the airbag configuration is triggered, conducting compressed gas from said gas generator into said guide space and into said further guide space in order to act upon said rolling piston and said further rolling piston, and said guide devices being configured such that, only after said rolling piston and said further rolling piston have been rolled from respective starting positions to respective given positions, said guide devices also conduct compressed gas into said airbag. 22. The airbag configuration according to claim 21, wherein said