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. 03, 2012
Filed:
Mar. 05, 2010
Applicants:
Mario Kuhl, Herzogenaurach, DE;
Andreas Eichenberg, Chemnitz, DE;
Inventors:
Mario Kuhl, Herzogenaurach, DE;
Andreas Eichenberg, Chemnitz, DE;
Assignee:
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L 9/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hydraulic unit () is provided for a cylinder head () of an internal combustion engine with a hydraulically variable gas-exchange valve train (). In the hydraulic unit, a high-pressure chamber (), a medium-pressure chamber (), and a low-pressure chamber () used as the hydraulic medium reservoir are formed. The low-pressure chamber communicates via a throttle opening ('″) with the medium-pressure chamber, and the throttle opening extends through a housing seal () produced as a separate component.