Patent ID: 7543850

Claim:
An airbag for an airbag module of a motor vehicle, comprising: an upper airbag layer configured to face an occupant in an inflated state; a lower airbag layer connected to the upper airbag layer; an intermediate layer secured to the lower airbag layer and arranged between the upper and lower airbag layers, wherein the intermediate layer divides an interior of the airbag into a first chamber formed by the lower airbag layer and the intermediate layer and a second chamber formed by the intermediate layer and the upper airbag layer; a gas inlet aperture through which gas originating from an inflation device is able to enter the first chamber; and an outlet comprising an aperture bounded by a periphery through which gas from the first chamber is able to enter the second chamber, wherein the outlet is configured such that, according to an amount of gas introduced into the airbag through the inlet aperture, gas selectively fills substantially only the first chamber or both the first and second chambers, and wherein the outlet is at least partially pressure-controlled such that the periphery of the aperture through which gas from the first chamber flows into the second chamber is torn based on the gas pressure in the first chamber which results in a change in the size of the aperture.