Belt drive system

US4932926A · kind A · utility

Assignee

• Stabilus GmbH · DE

Inventors

• Leo Lauderbach · Steinbach, DE
• Klaus Ruffertshofer · Sankt Goar, DE
• Werner Rohrmoser · Koblenz, DE
• Hans-Dieter Pohlenz · Berlin, DE

Key dates

• Filing date: Sep 18, 1989
• Grant date: Jun 12, 1990
• Expiry date: Sep 18, 2009

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2007/0806
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In a belt drive, a tensioning roller acts onto a section of a belt. The tensioning roller is biased along a tensioning roller movement path such as to provide a tension of the belt. The tension of the belt is responsive to the driving direction of the belt. A higher tension occurs in a normal driving direction of the belt, and a lower tension occurs in a reverse driving direction of the belt. In the reverse driving direction of the belt there is a risk of disengagement between the belt and respective belt pulleys. A damper is provided for damping the movement of the tensioning roller along the tensioning roller movement path. In order to prevent disengagement of the belt and the respective belt pulleys, the damper is locked when a reverse driving direction occurs and/or when operational conditions occur under which there is a likelihood of the reverse driving direction to occur.