Patent · US Active

Method for producing an oil scraper piston ring

US9638321B2 · kind B2 · utility

3Cited by

7References

8Claims

0Family size

Assignee

Federal-Mogul Burscheid GmbH · DE

Inventors

Klaus Meyer · Kaarst, DE
Dirk Baerenreuter · Odenthal, DE

Key dates

Filing date	Apr 25, 2013
Grant date	May 2, 2017
Priority date	—
Expiry date	May 16, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49284
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

An oil scraper piston ring and a method for producing it in which a base body is provided with a running surface profile by machining the radially outer circumferential surface thereof, the running surface profile including two running surface lands and an interposed groove, wherein the running surface profile corresponds to that of the finished oil scraper piston ring, and on the groove side, seen in the circumferential direction, drainage holes are introduced into the groove base, at least the running surface lands are provided with a wear-resistant PVD, DLC or TaC layer and, if needed, the wear-resistant layer is subjected to a polishing, honing or lapping operation.

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