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. 14, 2003
Filed:
Apr. 25, 2001
Applicant:
Inventor:
Gunther Petrzik, St. Georgen, DE;
Assignee:
Getrag Getriebe-und-Zahnrad-fabrik Hermann Hagenmeyer GmbH & Cie., Ludwigsburg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16N 7/40 ; F01M 1/102 ;
U.S. Cl.
CPC ...
F16N 7/40 ; F01M 1/102 ;
Abstract
A hydraulic circuit, particularly any for an automated twin clutch transmission for motor vehicles, including a countershaft with two parallel power transmission branches, two clutches, a high pressure circuit having at least one actuator for the countershaft transmission and/or the clutches, a low pressure circuit for lubrication and/or cooling of elements of the twin clutch transmission, and a first adjustment pump for the high pressure circuit. The low pressure circuit includes a plurality of secondary pumps which are connected in parallel to the first adjustment pump.