Torsional vibration damper

US4914949A · kind A · utility

Assignee

• Firma Carl Freudenberg · DE

Inventors

• Rainer Andra · Limburg, DE
• Gunter Ullrich · Hemsbach, DE
• Werner Bauer · Neuötting, DE
• Friedrich Reinhold · Heddesheim, DE
• Georg SCHÄFER · Weinheim, DE

Key dates

• Filing date: Oct 28, 1988
• Grant date: Apr 10, 1990
• Expiry date: Oct 28, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/2131
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A torsional vibration damper in which the hub ring and the flyring are interconnected through vulcanized-in basic resilient elements as well as resilient units made of rubber that are uniformly distributed around the circumference. These consist of columnar first and second resilient elements which at their outer surfaces merge into one another and at their inner surfaces are spaced from one another. The second resilient elements are precompressed by the first resilient elements and, when the torsional vibration damper is not rotating, are spaced at their outer surfaces from the inner surface of the flyring. At a desired speed of rotation, they are caused by centrifugal force to bear immovably on the inner surface of the flyring. This mechanical connection places their spring action in parallel with the spring action of the basic resilient elements.