US Patent 7648158 Twin airbag

An airbag for protecting an occupant of a vehicle includes a left outer panel for forming an outer surface of a left half airbag and a right outer panel for forming an outer surface of a right half airbag. The airbag also includes an inner panel for forming inner surfaces of the left and right half airbags, and a base-end panel for forming a base-end chamber for the left and right half airbags. The airbag is configures so that the left and right half airbags are inflated with gas passing through the base-end chamber.