A gas generator for an air bag system has, in a housing provided with a gas discharge port, ignition means activated upon an impact, and gas generating means ignited and burnt by the ignition means and generate a combustion gas for inflating an air bag, and two combustion chambers storing the gas generating...http://www.google.de/patents/US6460883?utm_source=gb-gplus-sharePatent US6460883 - Air bag gas generator and air bag apparatus