Patent ID: 6439605
Filing Date: 2002-08-27
Classification: B60R

Abstract:
An air bag comprising:an air bag panel portion with a gas introducing port, a partition wall situated inside the panel portion for partitioning an inside of the panel portion into a first chamber located on a front side of an automobile and having the gas introducing port, and a second chamber located on a rear side of the automobile, a gas passage situated between the first chamber and the second chamber, at least one vent hole formed in the panel portion at the second chamber, and a reverse-flow preventing device formed in the gas passage between the panel portion and the partition wall and situated between the first and second chambers for allowing a gas to flow from the first chamber to the second chamber and preventing the gas from flowing from the second chamber to the first chamber, said reverse-flow preventing device being a valve made of a sheet, said at least one vent hole passing through the panel portion and the sheet of the valve, which are sewed together around a circumferential portion of the vent hole.