Gas bag for a vehicular occupant restraint system

US6170860A · kind A · utility

Assignee

• TRW Occupant Restraint Systems GmbH & Co. KG · DE

Inventors

• Stefan Denz · Bad Säckingen, DE
• Norbert Lang · Blieskastel, DE

Key dates

• Filing date: May 26, 1998
• Grant date: Jan 9, 2001
• Expiry date: May 26, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R2021/23547
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A gas bag for a vehicular occupant restraint system comprises two plies of fabric partially interwoven along their outer edges. To offer protection over a lengthy period in time amounting to several seconds but nevertheless dissipate the energy of impact to the required degree on impact and cushioning of the occupant, the plies of fabric are substantially air-tight, and the volume of the gas bag is divided by partial interweaving of the plies of fabric within the outer edges into several chambers. Further, the chambers are interconnected by at least one choked port remaining between the portions of the interwoven plies of fabric. Only part of the chambers is directly inflated by an inflator, the remaining part of the chambers being indirectly inflated via the choked port.