Patent ID: 7322599

Claim:
A knee bag, comprising: a constant width portion having a substantially rectangular shape with a substantially equal lateral width to form an upper portion of the knee bag, a narrow width portion having a substantially triangular shape with a rounded bottom and linear side portions, and a lateral width decreasing downwardly and extending downwardly from the constant width portion, a plurality of tethers for connecting front and rear portions of the knee bag and extending laterally, said tethers being disposed vertically in multistage so that an upper tether has a longer lateral length than a lower tether, said tethers including an uppermost tether located at least above a vicinity of a boundary between the constant width portion and the narrow width portion, and vent spaces formed between lateral ends of the tethers and the linear side portions of the knee bag, wherein an imaginary line connecting one lateral end of the upper tether and one lateral end of the lower tether at a side same as the one lateral end of the upper tether is parallel to one of the linear side portions close to the lateral ends of the upper and lower tethers, and another imaginary line connecting the other lateral end of the upper tether and the other lateral end of the lower tether is parallel to the other of the linear side portions so that the knee bag is inflated upwardly in front of legs of a vehicle occupant while a gas is smoothly introduced to the constant width portion through the vent spaces along the linear side portions.