Patent · US Active

Method for producing a piston ring

US8973262B2 · kind B2 · utility

3Cited by

3References

7Claims

0Family size

Assignee

Federal-Mogul Burscheid GmbH · DE

Inventors

Johannes Esser · Odenthal, DE
Hans-Gerd Kroeschel · Cologne, DE
Steffen Hoppe · Overath, DE

Key dates

Filing date	Aug 13, 2011
Grant date	Mar 10, 2015
Priority date	—
Expiry date	Dec 6, 2031

Classification

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

Abstract

Method for producing a piston ring having an axial height <2 mm, said piston ring having a radially outer running surface provided with at least one rail, a radially inner circumferential surface, and upper and lower flank surfaces extending therebetween, wherein said rail is provided with a contour that is tapered radially outwardly, thereafter the running surface, together with the flanks of the tapered rail, is provided with at least one wear-resistant layer, and then only the flank of the rail that is to form a scraping edge is subjected to at least partial material removal to form the scraping edge.

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