Patent ID: 6685791
Filing Date: 2004-02-03
Classification: B60R,Y10T

Abstract:
A method for producing for deployment in an air bag module an air bag which in its inflated condition has a three-dimensional form via the fabrication of a two layered material web from which individual air bag cut-outs are continuously cut, the method comprising:connecting the material web layers to one another along closed contours such that the edges so formed from the connection of the material web layers to one another exhibit a trapezoidal-like shape in that each individual cut-out has a pair of non-parallel edges and one edge which is parallel to and longer than another respective edge and each individual cut-out has a pair of shortened inwardly directed branches each formed in a respective one of the corner areas oppositely disposed to one another and each defined by the respective intersection of one of the two respective border non-parallel edges with the border edge of the longer parallel trapezoid side and each branch has two respective edges disposed at a selected one of a disposition outside of the stitched together area of the individual cut out and along the stitched together area of the individual cut out; and cutting along a cutting line each individual air bag cut-out to be cut out of the material web such that the path of the cutting line of the individual air bag cut-out to be cut out does not correspond, in the area of the corners of the longer trapezoid side, to the contour edge but, instead, to contribute to the formation of the height of the three-dimensional air bag, extends inwardly, whereby, in the subsequent completion of the production of a closed air bag from the individual cut-out, the cutting edges of each branch of each material web layer are connected to one another.