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Single piece air bag with improved stress distribution

  • US 5,975,571 A
  • Filed: 07/17/1997
  • Issued: 11/02/1999
  • Est. Priority Date: 07/17/1997
  • Status: Expired due to Fees
First Claim
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1. An inflatable air bag (20'"'"') comprising:

  • an inlet portion (24) adapted to be attached to a source of inflation gas (70) and a cushion portion, initially maintained in a compact configuration prior to being inflated, the cushion portion being rapidly inflated by the inflation gas, the cushion including a plurality of seams (90) joining edges of the cushion material together to thereby form the cushion,and including a quadrilateral first section (52) having an opposing top and bottom and opposing sides and corresponding adjacent corners, wherein at least opposing sides, top and bottom and corners are arcuately shaped and wherein the bag further includes side panels (60a,b) which extend oppositely from the sides of the first section;

    wherein at least one edge of the cushion material is concave in shape and joined to another edge that is concave in shape.

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