Patent · US Active

Piston ring

US10030773B2 · kind B2 · utility

2Cited by

30References

19Claims

0Family size

Assignee

Mahle International GmbH · DE

Inventors

Thomas Stong · Kent City, US
Thomas J. Smith · Bay Shore, US

Key dates

Filing date	Mar 4, 2016
Grant date	Jul 24, 2018
Priority date	—
Expiry date	Jul 1, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23C28/42
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A piston ring for a piston of a reciprocating internal combustion engine. The piston ring comprises a body having an outer contact surface. A tribological coating is formed on the outer contact surface of the body. The tribological coating comprises a quaternary Cr—V—Ti—N system. In one form, the tribological coating is deposited on the outer contact surface of the body as a stack of multiple layers.

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