Patent ID: 6863303

Claim:
A hybrid inflator for an inflating-type safety system of a vehicle provided with an air bag, comprising: an inflator housing charged with a pressurized medium containing an inert gas; ignition means provided inside the inflator housing; a gas generator accommodated in the inflator housing, the gas generator including, a gas generator housing constituting an outer shell of the gas generator, the gas generator housing including a charge-transferring chamber formed inside a cylindrical charge-transferring chamber housing provided longitudinally in an extension of the ignition means, a gas generating chamber defined by the charge-transferring chamber housing and the gas generator housing, and storing gas generating means therein, the gas generating chamber having a plurality of communication holes communicating with the interior of inflator housing, the charge-transferring chamber housing having a plurality of flame-transferring holes provided at intervals in the longitudinal direction to make the charge-transferring chamber and the gas generating chamber communicate with each other; and at least some of the plurality of flame-transferring holes and the communication holes are arranged not to face each other opposingly in the longitudinal direction; a spare communication hole that penetrates a wall surface of the gas generator housing where the gas generating chamber, or a first gas generating chamber and a second gas generating chamber do not exist; and an ignition means chamber provided with the ignition means.