Patent ID: 9533652
Date: 2017-01-03
CPC Classifications: B60R

Claim:
1. An airbag assembly comprising: a first cushion portion that defines a first inflatable chamber that is configured to receive inflation gas from an inflator to expand the first cushion portion from a compact state to a deployed state, the first cushion portion including a cushion side panel defining a cushion vent aperture to vent inflation gas; a second cushion portion coupled to the first cushion portion, wherein the second cushion portion defines a second inflatable chamber that is configured to receive inflation gas from the cushion vent aperture of the first inflatable chamber to expand the second cushion portion from a compact state to a deployed state; and a one-directional valve that permits flow of inflation gas through the cushion vent aperture from the first inflatable chamber to the second inflatable chamber and restricts flow of inflation gas from the second inflatable chamber to the first inflatable chamber, the one-directional valve comprising: wherein the first valve layer and the second valve layer part at the valve opening to allow inflation gas to flow from the valve aperture into the second inflatable chamber, and wherein the second valve layer collapses onto the first valve layer to close the valve opening when a pressure in the second inflatable chamber exceeds a pressure in the first inflatable chamber to restrict gas flow from the second cushion portion into the first cushion portion.