Patent · US Expired

Extrusion molded electrode formed as compound body and a method of producing the same

US5551902A · kind A · utility

5Cited by

5References

3Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Hans Hubert · Hamm, DE
Werner Langer · Ludwigsburg, DE
Walter Wuest · Staffelstein, DE
Stephan Weigel · Thurnau, DE

Key dates

Filing date	Aug 29, 1994
Grant date	Sep 3, 1996
Priority date	—
Expiry date	Aug 29, 2014

Classification

Technology area (CPC H)Electricity
CPC primaryH01T13/39
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A compound electrode, in particular an electrode for a spark plug, has a core composed of a first electrically conductive material, and a casing deformed to surround the core and composed of a second electrically conductive material. The casing is formed in a single extrusion molding step that also shapes the core and simultaneously forms the cross-sectional profile of the electrode.

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