US Patent 7380823 Knee-bag and occupant leg protection apparatus

A knee-bag to be inflated in front of legs of an occupant includes a first member facing the occupant, a second member facing a side opposite to the occupant, and a tether provided in the knee-bag for connecting the first member and the second member. The tether extends in a lateral direction and has a middle portion and end portions in a thickness direction of the knee-bag. The middle portion has a width in the lateral direction smaller than that of the end portions, so that air-flow spaces are formed between a left end of the tether and a left side of the airbag and between a right end of the tether and a right side of the airbag.