Gas bag cushion knee restraining system for motor vehicles

US4948168A · kind A · utility

Assignee

• TRW Repa GmbH · DE

Inventors

• Heinz-Dieter Adomeit · Berlin, DE
• Roland Brenner · Wallhausen, DE

Key dates

• Filing date: Mar 29, 1989
• Grant date: Aug 14, 1990
• Expiry date: Mar 29, 2009

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R2021/23169
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A passive restraining system for vehicle occupants is presented in which the protective action of a gas bag is considerably increased by a knee cushion which is movable out of a rest position into an activated position closer to the knee of the vehicle occupant. To move the knee cushion out of its rest position into its activated position no separate drive mechanism is necessary because the energy required to do this is derived from the expansion pressure of the gas bag which is arranged in the direction of travel in front of the knee cushion and presses the latter into its activated position.