Torsional vibration damper

US6217451A · kind A · utility

Assignee

• LUK Lamellen Und Kupplungsbau · US

Inventors

• Ad Kooy · Achern, DE
• Hartmut Mende · Bogen, DE
• Johann Jackel · Baden-Baden, DE
• Andreas Raimann · Bühl, DE

Key dates

• Filing date: Mar 5, 1999
• Grant date: Apr 17, 2001
• Expiry date: Mar 5, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F15/13461
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The coil springs of an arcuate energy storing device in a torsional vibration damper are fitted into each other in such a way that at least one convolution of the inner spring engages at least one convolution of the outer spring when the energy storing device is caused to store energy (or to store additional energy) and/or is permitted to dissipate energy while the damper is in actual use, e.g., between the primary and secondary flywheels of a composite flywheel in the power train of a motor vehicle. The at least one convolution of the outer spring can be facetted and/or deformed for reliable engagement with the at least one convolution of the inner spring, and the at least one convolution of the inner spring can have a circular or a non-circular outline. The at least one convolution of the inner spring can engage one or more end convolutions or one or more intermediate convolutions of the outer spring.