Patent attributes
An airbag includes an airbag body having a first expansion portion, a second expansion portion, a first non-expanding part, and a second non-expanding part. While the airbag body is in a deployed state, the first expansion portion is disposed on a side of an occupant; the second expansion portion is disposed at a front side of the first expansion portion and is enlarged downward with respect to the first expansion portion; the first non-expanding part includes a first extending part extending downward from an upper part of the second expansion portion and a second extending part extending upward from a lower part of the second expansion portion, and has an opening between a tip of the first extending part and a tip of the second extending part; and the second non-expanding part is disposed rearwardly apart from the opening and extends at least partially along the first non-expanding part.