Patent ID: 7559564

Claim:
In combination, an airbag system and a vehicle, the combination comprising: an airbag mounted to the vehicle to be deployed along an external, outer surface thereof for protecting a pedestrian involved in a collision with the vehicle; gas leak structure of the airbag for leaking gas out from the air bag; and at least one inflator that injects inflation gas into the airbag in different stages during deployment of the airbag along the vehicle outer surface with an initial stage generating a maximum internal pressure in the airbag, and a subsequent stage that is initiated upon reaching a predetermined low internal pressure in the airbag due to gas leakage out therefrom and which causes pressure to increase in the airbag above the low pressure to an intermediate internal pressure lower than the maximum pressure with airbag internal pressure then falling from the intermediate pressure due to gas leaking out of the airbag.