Patent ID: 8684409

Claim:
An airbag for an airbag module for installation in a motor vehicle with the airbag made from airbag material and having an inflation device for the airbag, the airbag folded prior to triggering of the inflation device, the airbag comprising a restraining strap in the interior of the airbag with at least a first section and a second section for the controlled inflation of the airbag, the restraining strap attached to portions of the airbag that move in opposite directions upon inflation of the airbag by the inflation device and attached in such manner that the first section of the restraining strap which is shorter than the second section will be stretched until reaching a predetermined ultimate stress level during a first stage of the inflation, and following a rupture of the first section of the restraining strap, the portions of the airbag will move in opposite directions until the stretching of the second section of the restraining strap, with the inflated state of the airbag determined at least in part by the second section of the restraining strap, the restraining strap and the first and second sections formed by a single piece of material with a perimeter cut of the material defining the length and width of the second section of the restraining strap and opposite ends of the second section attached to the respective portions of the airbag moving in opposite directions, and the first section of the restraining strap formed by a flap with reduced width and shorter length than the second section of the restraining strap, and formed from the material with respectively arranged inside cuts in the material within the perimeter cut and remaining connected with one end to part of the material, and the other cut-off end attached to the respective end of the second section of the restraining strap, thus forming a loop.