Patent · US Active

Piston ring and method for manufacturing same

US9995393B2 · kind B2 · utility

0Cited by

6References

12Claims

0Family size

Assignees

Mahle Metal Leve S/A · BR
Mahle International GmbH · DE

Inventors

Antonio E. Meirelles Tomanik · São Paulo, BR
Daniel Lopez · Chêne-Bourg, CH

Key dates

Filing date	Jul 31, 2014
Grant date	Jun 12, 2018
Priority date	—
Expiry date	Jun 13, 2035

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16J9/28
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A piston ring for a piston of an internal combustion engine or a compressor may include a substantially annular shaped body defining an inner surface facing towards a groove configured to receive the body, an upper surface facing towards a combustion chamber and extending substantially at a right angle to the inner surface, and a lower surface disposed substantially opposite the upper surface. A layer of thermally insulating coating may be disposed at least partially on at least one of the inner surface, the upper surface and the lower surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.