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. 21, 1997
Filed:
Sep. 21, 1995
Udo Borschert, Sennfeld, DE;
Lutz Leimbach, Oberwerrn, DE;
Manfred Waning, Wonfurt, DE;
Michael Zottmann, Dittelbrunn, DE;
Fichtel & Sachs AG, Schweinfurt, DE;
Abstract
An actuator for a motor vehicle friction clutch comprises a drive system, a transmission which converts its motion into an essentially translational motion of an output element, whereby the travel of the transmission can be limited by at least one stop, and a clutch position regulating system. The clutch position regulating system is provided with a monitoring device, by means of which the drive can be monitored to detect the energy feed and direction of operation, and an incremental position sensor can be monitored to detect changes in position corresponding to transmission movements in which, when an energy feed to the drive is converted into a corresponding change in position on the incremental position sensor, the new position of the transmission can be determined in relation to the old position, while when the incremental position sensor comes to a stop when there is a continued supply of energy to the drive, by means of the direction of operation of the drive, that is interpreted as an indication that the defined reference position of the transmission corresponding to this direction of operation has been reached, whereby the reference position is assumed when the transmission comes into contact with the stop which corresponds to the direction of operation of the drive.