Drive arrangement for a roll bar of motor vehicles

US4840398A · kind A · utility

Assignee

• Daimler-Benz AG · DE

Inventors

• Klaus Matthias · Sindelfingen, DE
• Karl-Heinz Baumann · Viernheim, DE
• Gerald Schick · Unterschleißheim, DE
• Arno Disson · Sindelfingen, DE
• Hermann Moller · Hamburg, DE
• Holger Seel · Aidlingen, DE
• Claus Topfer · Sindelfingen, DE
• Uwe Nerger · Sindelfingen, DE
• Peter Thiele · Stocken, DE
• Eugen Fleisch

Key dates

• Filing date: Sep 26, 1988
• Grant date: Jun 20, 1989
• Expiry date: Sep 26, 2008

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R2021/135
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A piston-cylinder unit, which erects a swingable roll bar in a crash situation by an ejection spring, includes a controllable drive by which the movement and the direction of movement of the piston can be controlled and which can be disengaged in the event of a crash pulse, whereupon the piston extends rapidly by virtue of the ejection spring.