US Patent 7661699 Airbag system

An airbag system for a motor vehicle including a gas bag having first and second chambers. The system includes an inflator and a arranged in the connecting portion so that gas is guided into both the first and second chambers. The system includes at least one protective layer extending from the mass flow divider into the first chamber. Upon inflation of the gasbag, an inner pressure in the first chamber is significantly higher than an inner pressure in the second chamber, and wherein the protective layer comprises a flexible material deformed by the inner pressure in the first chamber to prevent gas from flowing from the first chamber through the connecting portion into the second chamber.