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:
Feb. 10, 2009
Filed:
Jan. 02, 2007
Applicants:
Stefan Kohlhaas, Voerde, DE;
Thomas Voss, Stuttgart, DE;
Inventors:
Stefan Kohlhaas, Voerde, DE;
Thomas Voss, Stuttgart, DE;
Assignee:
Getrag Getriebe-und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG, Untergruppenbach, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 48/02 (2006.01); F16D 25/10 (2006.01); B60W 10/02 (2006.01); B60W 10/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hydraulic circuit for a dual clutch transmission for motor vehicles comprises a first and a second clutch that can be hydraulically actuated and a first and a second pressure control valve for regulating the clutch pressure of the first and second clutches. In this circuit there is provided a single central valve, which in a first position connects the pressure control valves to the respective clutches and in a second position disengages the pressure control valves from the respective clutches.