Patent ID: 7192051

Claim:
An inflator, comprising: a single casing; a first and a second gas feed portions provided in the single casing, the first gas feed portion is different from the second gas feed portion; an airtight partition formed in the casing airtightly separates gas chambers of the gas feed portions from one another; and a first gas feed passage and a second gas feed passage provided in the casing, wherein: the first gas feed passage connects the first gas feed portion and a first expansion chamber of a plurality of expansion chambers in a curtain air bag; the second gas feed passage connects the second gas feed portion and a second expansion chamber of the plurality of expansion chambers in the curtain air bag, the second expansion chamber is different from the first expansion chamber; each of the gas feed passages individually communicates with at least one of front-seat and rear-seat expansion chambers of the curtain air bag that is adapted to protect heads of front-seat and rear-seat occupants of a vehicle; and a maximum gas output of the gas feed portion that supplies gas to the gas passage communicating with the front-seat expansion chamber is higher than a maximum gas output of the gas feed portion that supplies gas to the gas passage communication with the rear-seat expansion chamber.