Patent ID: 8573641

Claim:
An airbag having a fabric enclosure, a vent in the fabric enclosure, and a flow control device comprising: a flexible membrane fastened around part of a periphery of the membrane to the fabric enclosure adjacent to the vent to define a flow passage having a free end through which inflation gas is vented to atmosphere, the membrane having a tongue extending away from the free end and the tongue having a pre-deployment position in which it overlies an inner surface of the fabric enclosure and a distal end of the tongue extends past an end of the vent closest to the free end, the distal end being unrestrained against movement away from contact with the inner surface of the fabric enclosure such that the membrane is movable to an aspiration position wherein the tongue is spaced from the inner surface of the fabric enclosure; wherein a first distance from the distal end of the tongue to a closest end of the vent is shorter than a second distance from the distal end of the tongue to a closest end of fastening between the periphery of the membrane and the fabric enclosure.