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:
Sep. 20, 2011
Filed:
Nov. 14, 2008
Applicants:
Martin Rauch, Bamberg, DE;
Markus Proschko, Baudenbach, DE;
Inventors:
Martin Rauch, Bamberg, DE;
Markus Proschko, Baudenbach, DE;
Assignee:
Schaeffler Technologies GmbH & Co. KG, Herzogenaurach, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L 9/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hydraulic unit () for a cylinder head () of an internal combustion engine with a hydraulic, variable valve train () is provided. In the hydraulic unit, a high-pressure chamber (), a medium-pressure chamber (), and also a low-pressure chamber () used as a hydraulic medium reservoir are formed. The low-pressure chamber communicates merely via a choke opening () with the medium-pressure chamber, wherein the choke opening passes through a separating wall () extending between the low-pressure chamber and the medium-pressure chamber.