Patent · US Expired

Use of a fusion material of copper and chrome as the contact material for vacuum contactors

US4780582A · kind A · utility

4Cited by

5References

4Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Heinrich Haessler · Wendelstein, DE
Reiner Mueller · Rottweil, DE
Horst Kippenberg
Wilfried Kuhl · Wendelstein, DE
Joachim Grosse · Erlangen, DE

Key dates

Filing date	Feb 5, 1987
Grant date	Oct 25, 1988
Priority date	—
Expiry date	Feb 5, 2007

Classification

Technology area (CPC H)Electricity
CPC primaryH01H1/0206
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

This invention relates to a new use of a fused material of copper and chrome as a contact material for use in vacuum contactors. In addition, the invention relates also to the contact material itself and to the method of its fabrication, as well as for special contact arrangements in the vacuum contactors. The invention shows a whole new, unsuspected range of application for the above fused materials. Up to now, contactors normally used material based on tungsten and copper which were first sintered and then immersed. It has now been experimentally shown that fused materials of copper and chrome, particularly after being reshaped, are very well suited as a contact material for vacuum contactors. Furthermore, in contact pieces of said fused material, methods are provided for additional additives to be precisely inserted by localized alloying, diffusion, or related techniques.

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