Patent · US Expired

Contact material for high-power vacuum circuit breakers

US3993481A · kind A · utility

3Cited by

2References

2Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Horst Schreiner
Heinrich Hassler · Wendelstein, DE

Key dates

Filing date	Sep 17, 1975
Grant date	Nov 23, 1976
Priority date	—
Expiry date	Sep 17, 1995

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC22C38/00
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A new material for making the electrical contacts of high-power vacuum circuit breakers comprises an alloy having as a base metal, a metal such as copper, nickel, iron, cobalt or titanium, and as an alloying metal, a metal such as bismuth, tellurium or lead, this alloy also including an auxiliary metal which forms a eutectic with the base metal used. The alloy has a fine grain size while at the same time a low gas content.

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