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. 30, 2025
Filed:
Sep. 24, 2024
Mahle International Gmbh, Stuttgart, DE;
Rafael Rabello, Murtede, PT;
Juliano Avelar Araújo, Coimbra, PT;
Mahle International GmbH, , DE;
Abstract
A piston ring for an internal combustion engine may include an annular base body and a protective coating arranged on an outer circumference of the base body. The base body may include a first joint flank, a second joint flank, an interruption along the circumferential direction, an axial end face, and an edge formed between the first joint flank and the end face. The interruption may form a joint bounded along a circumferential direction of the base body via the first joint flank and the second joint flank. The axial end face may include a radially outer surface section extending perpendicularly to a central longitudinal axis of the base body and merging radially inwards into a radially inner surface section extending at an obtuse angle to the central longitudinal axis. The edge may include a chamfer.