Patent ID: 8491006

Claim:
An airbag device in which an airbag housed in a folded state is deployed by gas generated by an inflator, wherein part of a base fabric of the airbag excluding an occupant restraining face is joined by first and second joining parts that extend in a deployment direction of the airbag, wherein the first joining part has a first length and the second joining part has a second length, said first length being greater than said second length such that the first joining part extends with said second joining part over the second length and extends beyond the second joining part in the deployment direction from an end of the second joining part, and wherein a total breaking strength of the first and second joining parts is greater at a location in which the first joining part extends with the second joining part than at a location in which the first joining part extends beyond the second joining part such that, as the airbag is deployed, the total breaking strength of the joining parts increases in going from an already deployed portion of the airbag toward a not yet deployed portion.