US Patent 9333932 Air bag and folding method thereof

An air bag includes: a gas introduction opening portion; and a bag-shaped air bag main body portion; the air bag main body portion in the folded state including a first accumulated portion folded in a state where at least a portion of the first accumulated portion is turned over on a counter-occupant side toward the gas introduction opening, and a second accumulated portion which includes a face confronting portion confronting a face of the occupant in a normal position, and which is folded in a state where the face confronting portion is superimposed on the first accumulated portion so that the inflation gas introduced from the gas introduction opening directly flows into the face confronting portion.