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:
Oct. 17, 1989
Filed:
Jul. 21, 1988
Applicant:
Inventor:
Georg Kwoka, Siegburg, DE;
Assignee:
Viscodrive GmbH, , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60K / ; F16D / ;
U.S. Cl.
CPC ...
180248 ; 192 / ;
Abstract
A viscous shear coupling includes a housing and a hub, the hub with and housing having interleaved plates and the housing containing viscous liquid. A screw pump is provided to pump the viscous liquid into and out of the portion of the housing containing the plates thus to vary the torque transmission of the coupling. The viscous coupling may be used in a motor vehicle driveline to provide a viscous transmission.