Airbag for a vehicle occupant protective system

US8276939B2 · kind B2 · utility

Assignee

• Autoliv Development AB · SE

Inventors

• Klaus-Peter Kühne · Karlsfeld, DE
• Karl-Heinz Sommer · Stockdorf, DE
• Thomas Reiter · Dachau, DE
• Marcus Weber · Forchheim, DE
• Marc Schock · Karlsfeld, DE
• Jörg Albert · Germering, DE
• Tomas Agren · Uppsala, SE
• David Jacobsson · Handen, SE
• Jonas Gustafsson · Nossebro, SE
• Ulrika Fredriksson · Partille, SE

Key dates

• Filing date: Oct 21, 2009
• Grant date: Oct 2, 2012
• Expiry date: Apr 25, 2030

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R2021/2395
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An airbag for a vehicle occupant protective system comprises an inflatable cushion, a cinch tube circumventing a vent aperture disposed in the cushion, and a draw element guided in a circumventing channel of said cinch tube and being coupled to a surface of said cushion such that deployment of said cushion causes said draw element to contract said cinch tube. The airbag comprises a contraction limiting arrangement adapted to limit the contraction of said cinch tube by said draw element to a predetermined minimum free diameter d of at least 20% relative to the free diameter D of the open cinch tube.