Patent · US Expired

Electrode for field control

US6432524B1 · kind B1 · utility

4Cited by

6References

12Claims

0Family size

Assignee

ABB RESEARCH LTD. · CH

Inventors

Udo Fromm · Visby, SE
Mats Leijon · Västerås, SE
Li Ming · Visby, SE
Dan Windmar · Vittinge, SE

Key dates

Filing date	Jul 9, 1999
Grant date	Aug 13, 2002
Priority date	—
Expiry date	Jul 9, 2019

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/249972
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electrode for control of an electric field strength in a gaseous electrically insulating medium at the surface of the electrode and in the vicinity of the electrode, comprising an electrically conducting inner electrode (1′) and an electrically non-conducting layer (8) on at least parts of the surface of the inner electrode, wherein the thickness of the non-conducting layer is at least 5% of the mean diameter of the inner electrode and that the relative dielectric constant of the non-conducting layer is smaller than 3.

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