Inflatable gas bag for restraining systems in vehicles

US5333903A · kind A · utility

Assignee

• TRW Repa GmbH · DE

Inventors

• Heinz Eyrainer · Schwäbisch Gmünd, DE
• Hans Kissendorfer · Günzburg, DE

Key dates

• Filing date: Jan 17, 1992
• Grant date: Aug 2, 1994
• Expiry date: Jan 17, 2012

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R21/239
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An inflatable gas bag for restraining systems in vehicles consists of a jacket portion and two side portions sewn thereto. A fold is arranged on the one side portion. The fold is separated from the remaining part of the gas bag by a seam along a separating line extending transversely of the ejection direction. The seam is so dimensioned in its tearing strength that on reaching a predetermined value of the gas bag internal pressure the fold tears. By the fold the expansion direction of the gas bag can be controlled within a relatively wide range. At the same time in desired manner the ejection width and ejection velocity are reduced. Finally, the fold also controls a relief opening which is formed in one of the superimposed wall portions of the fold.