Patent ID: 7481454

Claim:
An air bag apparatus for a vehicle comprising: an air bag body including a first inflatable chamber and a second inflatable chamber, each of the first and second inflatable chambers being arranged to be positioned along a roof side rail of the vehicle in a front to rear direction of the vehicle so that the first inflatable chamber overlies a pillar member of the vehicle and the second inflatable chamber overlies a side window of the vehicle; and a fluid supply delay device attached to the airbag body, the fluid supply delay device including a duct having a first outlet port communicating with a first inlet port of the first inflatable chamber and a second outlet port communicating with a second inlet port of the second inflatable chamber, the first outlet port having an opening area smaller than that of the second outlet port so as to reduce a flow rate of a high-pressure fluid supplied to the first inflatable chamber as compared to that of the high-pressure fluid supplied to the second inflatable chamber so that the second inflatable chamber is fully inflated to overlie the side window of the vehicle before the first inflatable chamber is fully inflated to overlie the pillar of the vehicle.