Vehicle restraint system cushion with sacrificial tear seam

摘要

A sacrificial seam is formed to be coextensive with the main seam and having a strength which causes the sacrificial seam to tear during inflation just prior to the time when the maximum inflation gas pressure reaches the main seam. The sacrificial seam is located between the opening and the main seam to be subjected to the maximum inflation gas pressure before the pressure reaches the main seam. The sacrificial seam is spaced parallel with the main seam and at a distance from the main seam that is small, so as not to substantially influence deployment while reducing the final load due to the normal maximum inflation gas pressure the main seam, and adjacent fabric experience by an amount sufficient to prevent combing.