Patent ID: 6419267
Filing Date: 2002-07-16
Classification: B60R

Abstract:
An air bag device having an air bag body which expands to unfold in an interior of a vehicle, said air bag body comprising:an outer air bag body having a low permeability contact area facing a vehicle occupant when unfolded and vent holes spaced from the contact area and communicating with an exterior of said air bag body; and an inner air bag body having a capacity smaller than that of said outer air bag body and unfolding in an interior of said outer air bag body, said inner air bag body being formed with a high gas permeability at a surface of the inner air bag body facing a vehicle occupant and the contact area of the outer air bag body at the time the air bag body unfolds, wherein when the vehicle occupant abuts against said outer air bag body, a portion of the contact area of said outer air bag body pressed by the vehicle occupant abuts said inner air bag body so as to control the quantity of gas flowing from said inner air bag body into said outer air bag body and out through the vent holes.