US Patent 9845069 Airbag including compressible vent tube

A restraint system in a vehicle includes a reaction surface, an airbag including an inflation chamber, and a tube in fluid communication with the inflation chamber. The airbag is inflatable from an undeployed state to a deployed state. The airbag is fixed relative to the reaction surface in the undeployed state and adjacent the reaction surface in the deployed state. The tube extends along the airbag between the airbag in the deployed state and the reaction surface.