Inflatable gas bag for a restraining system in vehicles

US5219179A · kind A · utility

Assignee

• TRW Repa GmbH · DE

Inventors

• Heinz Eyrainer · Schwäbisch Gmünd, DE
• Andreas Kolb · Wernau, DE

Key dates

• Filing date: Jan 17, 1992
• Grant date: Jun 15, 1993
• 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 a restraining system in vehicles is provided in its wall with at least one predefined relief opening which remains sealed up to a predetermined internal pressure of the gas bag and is freed only when this internal pressure is exceeded. The gas bag therefore has the desired hardness in the initial phase of the restraining operation and thereafter effects an energy absorption by controlled discharge of the gases through the relief opening.