Air bag with improved tear stitch

摘要

An apparatus (10) for helping to protect an occupant (20) of a vehicle (12) includes an inflatable vehicle occupant protection device (14) having a deflated condition and an inflated condition. Tear stitching (200) interconnects portions (220 and 230) of the protection device (14) and is rupturable to permit the interconnected portions to move relative to each other. The tear stitching (200) includes a break point (210) and first and second segments (212) that extend away from the break point. The tear stitching (200) is arranged on the protection device (14) such that tension forces acting to rupture the tear stitching act primarily on the break point (210) so that the tear stitching ruptures first at the break point and then along the first and second segments (212) of the tear stitching.