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:
Jul. 16, 2002
Filed:
Aug. 24, 2000
Applicant:
Inventor:
Raimund Krammer, Gerolzhofen, DE;
Assignee:
Mannesmann Sachs AG, Schweinfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 3/502 ;
U.S. Cl.
CPC ...
F16D 3/502 ;
Abstract
A fluid friction coupling for driving a fan of an internal combustion engine includes a solenoid configured such that it surrounds a drive shaft and is operatively arranged for moving a control part. The control part moves a valve body which controls the flow of a viscous fluid into a working chamber. The fluid friction coupling is of particularly compact configuration and magnetic losses are kept particularly low.