Abstract: An airbag cushion of flexible sheet material has a vent opening with a vent cover of flexible sheet material stitched to an interior surface of the airbag cushion aligned with the vent opening in the airbag cushion to form a pocket. The vent cover has a vent opening therein allowing inflation gas to escape from the cushion via the vent opening. A vent flap of flexible sheet material is disposed at least partially within the pocket and inboard of the vent openings in the airbag cushion and vent cover. A tether extends inboard from vent flap to a tether end that is fixed in a releasable manner to a tether end securing device fixed to a module housing. The tether end is released in response to a sensor signal.

Abstract: An airbag cushion of flexible sheet material has a vent opening therein with a vent cover of flexible sheet material stitched to an interior surface of the airbag cushion aligned with the vent opening in the airbag cushion to form a pocket. The vent cover has a vent opening therein that allows airbag inflation gas to escape from the airbag cushion via the vent opening in the airbag cushion. A vent flap of flexible sheet material is disposed at least partially within the pocket and inboard of the vent openings in the airbag cushion and vent cover. The vent flap is fixed to at least one tether that extends outboard from the vent flap through an opening in the vent cover to a tether end that is permanently attached to the airbag cushion outboard of the vent cover. A tether extends inboard from vent flap to a tether end that is fixed in a releasable manner to a tether end securing device fixed to a module housing.