Method and device for controlling a coupling

US5556343A · kind A · utility

Assignee

• GKN Automotive Limited · DE

Inventors

• Theodor Gassmann · Rochester, US
• Franz-Josef Oberdorster · Neunkirchen, DE

Key dates

• Filing date: Aug 17, 1994
• Grant date: Sep 17, 1996
• Expiry date: Aug 17, 2014

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H48/27
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A coupling for transmitting torque between two parts has a friction coupling with a chamber including a piston and a rotational member. A pumping and control member is positioned in the chamber and includes at least one shear channel. The pumping and control member is rotatable between two positions such that viscous fluid moves through the channel to load the coupling.