Patent · US Expired

Method of identifying piston rings

US4326907A · kind A · utility

4Cited by

3References

3Claims

0Family size

Assignee

Goetze GmbH · DE

Inventors

Horst Bornefeld · Burscheid, DE
Hans P. Fort · Bensberg, DE
Werner Engel · Leverkusen, DE

Key dates

Filing date	Sep 26, 1979
Grant date	Apr 27, 1982
Priority date	—
Expiry date	Sep 26, 1999

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/269
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

Piston rings of asymmetrical cross section are identified by providing a surface marking which extends from one flank face of the piston ring to the outer circumferential face (running face) thereof.

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