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:
May. 10, 2005
Filed:
Jan. 22, 2002
Angelika Ebert, Schweinfurt, DE;
Jochen Kuhstrebe, Westheim, DE;
Thomas Busold, Fulda, DE;
ZF Sachs AG, Schweinfurt, DE;
Abstract
A clutch system includes a clutch device for positioning in a drive train between a drive unit and a transmission, and an actuating unit for hydraulically actuating the clutch device by means of at least one hydraulic slave-cylinder. The actuating unit has a hydraulic-medium delivery device for delivering a pressurized hydraulic medium, and a valve assembly, whose mediation allows the hydraulic medium to be supplied to and discharged from the slave-cylinder. The valve assembly comprises at least one supply valve, located in a hydraulic connection, between the hydraulic-medium delivery device and the slave-cylinder and at least one discharge valve, which is separate from the supply valve and located in a hydraulic connection, between the slave-cylinder and a hydraulic-medium reservoir.