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:
Oct. 01, 2019
Filed:
Oct. 12, 2016
Mahle International Gmbh, Stuttgart, DE;
Thomas J. Smith, Muskegon, MI (US);
Alexander S. Cooper, Maple Rapids, MI (US);
Robert J. Piccard, St. Johns, MI (US);
Timothy Andros, Fowler, MI (US);
Claudinei J. de Oliveira, St. Johns, MI (US);
Jason P. Bieneman, Ann Arbor, MI (US);
Victor H. Tapia Ramirez, Aguascalientes, MX;
Terry Pecott, Whitehall, MI (US);
Mahle International GmbH, , DE;
Abstract
A method of forming a piston ring includes providing a base portion formed of a metallic material, the base portion having a first surface, and a second surface that is opposite the first surface, the base portion configured to interface with a piston ring groove. The method includes grinding the first surface to form a reference surface, applying a chromium layer to the second surface, and grinding the chromium layer to reduce a surface roughness of the chromium layer.