Torsional vibration damper

US5496224A · kind A · utility

Assignee

• Ulrich Rohs · DE

Inventors

• Ulrich Rohs · Lehrte, DE
• Dietmar Heidingsfeld · Aachen, DE

Key dates

• Filing date: May 20, 1994
• Grant date: Mar 5, 1996
• Expiry date: May 20, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/2123
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A device for damping torsional vibration of a drive shaft with a liquid damping medium including a primary gear connected to the drive shaft. A secondary gear supports a series of planetary gears in meshed connection with the primary gear. The revolving primary gear and the planetary gears form a gear pump for closed circulation of the liquid damping medium through pressure ducts. The device further includes a control device for controlling the flow rate of the liquid damping medium based on the rotational speed of the primary gear.