Patent ID: 8684406

Claim:
An airbag with a valve device for a gaseous medium, the valve device comprising: a textile layer; and a foil that covers the textile layer in at least one area, wherein the textile layer and foil are configured such that at least one area of the airbag permeable by the medium is at least partially opened when the valve device is in an open position and is at least substantially sealed when the valve device is in a closed position, wherein the at least one area permeable by the medium is in the form of at least one opening in the foil, wherein the at least one area permeable by the medium of the foil is formed by perforation, wherein the perforation has a projection in an edge area of the at least one opening that extends away from the textile layer, and wherein the textile layer is an air permeable fabric and the textile layer and foil are configured with respect to each other so that (1) air from an environment passes through the air permeable fabric into the airbag and towards the foil so that the valve device is in the open position, and (2) a force acting on an outside of the textile layer moves the textile layer towards the foil so that the valve device is in the closed position.