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. 09, 2001
Filed:
Nov. 19, 1999
Applicant:
Inventors:
Franz Nagler, Gädheim, DE;
Thomas Otto, Gochsheim, DE;
Assignee:
Mannesmann Sachs AG, Schweinfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 2/508 ;
U.S. Cl.
CPC ...
F16D 2/508 ;
Abstract
An actuation device for a friction clutch arranged in the drive train of a motor vehicle includes an engagement/disengagement arrangement having a pressure fluid cylinder and a pressure fluid piston axially displaceably arranged therein. The engagement/disengagement arrangement is operatively connected to a pressure fluid source via a control valve which is actuatable as a function of a first control parameter representing a required value and a second control parameter representing an actual value of the axial position of the pressure fluid piston. The control valve being actuated by an electromagnetic positioning device.