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. 23, 2011
Filed:
Aug. 11, 2006
Peter Herter, Ravensburg, DE;
Franz Bitzer, Friedrichshafen, DE;
Peter Herter, Ravensburg, DE;
Franz Bitzer, Friedrichshafen, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
The invention concerns a device for actuating a diaphragm spring clutch () for vehicles by means of a pneumatic, hydraulic or electric actuator (), comprising a controller connected upstream of the actuator (), whose output control variable actuates the actuator (). To compensate for the strong nonlinearity of the releasing force over the releasing stroke that is typical of diaphragm springs, a controller is used, whose characteristic curve is plotted in such a way that this nonlinear curve of the releasing force is at least approximately compensated via a correspondingly coordinated actuation of the actuator (), so that it remains essentially identical over the releasing stroke.