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:
Dec. 14, 2021
Filed:
Mar. 23, 2018
Schaeffler Technologies Ag & Co. KG, Herzogenaurach, DE;
Oliver Witter, Westhausen, DE;
Klaus Feldner, Zirndorf, DE;
Stefan Dupke, Ködnitz, DE;
Holger Pätzold, Burgebrach, DE;
Frank Schlerege, Herzogenaurach, DE;
Serge Kursawe, Uttenreuth, DE;
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
A method for producing a reduced friction sliding surface on a machine element includes applying a coating comprising amorphous carbon to a surface of the machine element and locally heating the coating with a laser. The coating is heated to a temperature below an evaporation temperature of the coating to achieve a local volumetric increase in the coating and a local increase in a layer thickness of the coating. A surface structure of the coating includes a multiplicity of elevations resulting from a local phase transformation of the coating from amorphous carbon into graphite due to the locally heating.