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:
Apr. 24, 2012
Filed:
Nov. 03, 2006
Applicants:
Oliver Schnell, Veitsbronn, DE;
Tim Matthias Hosenfeldt, Nürnberg, DE;
Inventors:
Oliver Schnell, Veitsbronn, DE;
Tim Matthias Hosenfeldt, Nürnberg, DE;
Assignee:
Schaeffler KG, Herzogenaurach, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L 1/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
Proposed is a valve drive for an internal combustion engine, having a gas exchange valve () and having a valve actuating element () which has a contact face () for an end face () on a valve shank () of the gas exchange valve () which is actuated in the opening and closing direction by the valve actuating element (). Here, the contact face () and/or the end face () should be provided with a wear prevention layer () which is composed of at least one metal-free amorphous hydrocarbon layer with spand sphybridized carbon.