The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 2001
Filed:
Jun. 29, 1999
Gerd Brunken, Dittelbrunn, DE;
Mannesmann Sachs AG, Schweinfurt, DE;
Abstract
A viscous coupling is designed with a coupling housing and at least one drivable rotor, which is provided for the transmission of torque via shearing areas in a working chamber filled with viscous fluid. This working chamber is partitioned from a supply chamber for viscous fluid by a dividing wall. The viscous fluid can be delivered from the working chamber via a pumping into the supply chamber or from the supply chamber via a feed line. A volumetric-flow setting device having an electromagnetic adjusting device operably complete with the feed line back into the working chamber. The feed line, at least along part of its extension length, is directed through a region in which a magnetic field can be produced by the electromagnet. The viscous fluid is enriched with magnetizable particles, in, order to realize a magnetorheological behavior. As a result the flow velocity of the viscous fluid in tie feed line, when flowing through the magnetic field, can be varied as a function of the intensity of the applied magnetic field, this enables the volumetric flow between supply chamber and working chamber to be selectively, dynamically set.