Patent ID: 7611164
Filing Date: 2009-11-03
Classification: B60R

Abstract:
1. An airbag apparatus comprising: an inflator for discharging gas; and an airbag that is caused to expand by being filled with the gas, wherein: an interior of the airbag is divided into a plurality of expanding chambers including first, second, and third expanding chambers; the airbag has a plurality of flow channels formed therein for guiding gas to the expanding chambers, including a first flow channel for guiding gas from the inflator to the first expanding chamber, a second flow channel for guiding gas from the inflator to the second expanding chamber, a third flow channel for guiding gas from the second expanding chamber to the third expanding chamber, and a fourth flow channel for guiding gas from the first expanding chamber to the third expanding chamber; and a cross-sectional area of each of the gas flow channels is different so that the expanding chambers are caused to expand in stages at different times.