Invention Grant
- Patent Title: Piston ring for an internal-combustion engine, a method for coating a piston ring, and an internal-combustion engine
-
Application No.: US16090197Application Date: 2017-03-29
-
Publication No.: US10724637B2Publication Date: 2020-07-28
- Inventor: Paulo Jose Da Rocha Mordente
- Applicant: Mahle Metal Leve S/A , Mahle International GmbH
- Applicant Address: BR DE
- Assignee: Mahle Metal Level S/A,Mahle International GmbH
- Current Assignee: Mahle Metal Level S/A,Mahle International GmbH
- Current Assignee Address: BR DE
- Agency: Fishman Stewart PLLC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@19fbc8b
- International Application: PCT/EP2017/057441 WO 20170329
- International Announcement: WO2017/167817 WO 20171005
- Main IPC: F16J9/26
- IPC: F16J9/26 ; F16J9/12 ; C23C14/50 ; C23C14/54
Abstract:
A piston ring may include a drawn metal base of constant thickness having an outer peripheral surface. The piston ring may also include a hard coating disposed on the outer peripheral surface. The coating may have a thickness that is greater in a region of two butt ends of the base than a thickness of the coating in another region of the outer peripheral surface. The coating may be defined by a plurality of layers with a nanoscale structure.
Public/Granted literature
Information query
