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:
Nov. 16, 2021
Filed:
May. 15, 2020
Applicant:
Mahle International Gmbh, Stuttgart, DE;
Inventors:
Stephan Koerner, Loechgau, DE;
Christoph Luven, Stuttgart, DE;
Alexander Mueller, Metzingen, DE;
Alexander Puck, Esslingen, DE;
Reinhard Rose, Fellbach, DE;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L 3/00 (2006.01); F01L 3/04 (2006.01); B23P 15/00 (2006.01);
U.S. Cl.
CPC ...
F01L 3/04 (2013.01); B23P 15/001 (2013.01);
Abstract
A gas exchange valve for an internal combustion engine may include a valve stem and a wear resistance improving functional layer. The valve stem may extend in an axial direction and may transition into a valve plate in the axial direction. The functional layer may include nickel and tungsten. The functional layer may be arranged in a coating area on an outer circumference of the valve stem and may at least partially define a sliding surface.