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:
Jul. 22, 2008
Filed:
Oct. 14, 2005
Applicants:
Andreas Hegerath, Bergheim, DE;
Martin Leibbrandt, Bedburg, DE;
Reinhard Moehlmann, Köln, DE;
Ulrich Eggert, Viersen, DE;
Inventors:
Andreas Hegerath, Bergheim, DE;
Martin Leibbrandt, Bedburg, DE;
Reinhard Moehlmann, Köln, DE;
Ulrich Eggert, Viersen, DE;
Assignee:
Getrag Ford Transmissions GmbH, Koln, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60W 10/02 (2006.01); B60W 10/10 (2006.01); F16D 13/72 (2006.01); F16D 13/74 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hydraulic system for providing pressure and volume flows in a double-clutch transmission. A first clutch and a second clutch are preceded by at least one changeover valve which, in a first state, guides lubricating flow to the first clutch and cooling flow to the second clutch, and, in a second state, guides lubricating flow to the second clutch and cooling flow to the first clutch. The cooling flow is preferably variable.