Gas generator, in particular, a tubular gas generator for an air bag

A tubular gas generator for an air bag comprising

• an outer tube;
• an inner tube for accepting gas-producing material, said inner tube forming an annular intermediate chamber and being arranged within and radially spaced from the outer tube;
• closure covers for closing open front ends of both the outer and the inner tubes;
• and
• an ignition device for igniting the gas-producing material;
• the ignition device being arranged in a central region of the axial extent of the outer and inner tubes;
• peripheral opening arranged in both tubes, said peripheral openings being aligned with each other, said ignition device extending through the aligned peripheral openings;
• and the intermediate chamber between the inner tube and the outer tuber being occupied in the region of the peripheral openings by a substantially annular segment-shaped holding body which has an installation through-hole aligning with the peripheral openings for holding the ignition device;
• said holding body being tubular shaped and occupying the annular intermediate chamber over substantially its whole periphery, the tubular holding body having a slot extending over its whole axial length, and said slot being arranged diametrically opposite the installation through-hole of said body.