Patent · US Expired

Contact system for high-voltage power circuit breakers

US4032737A · kind A · utility

9Cited by

5References

6Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Peter Huhse
Heiner Marin · Berlin, DE
Harald Kurzmann · Berlin, DE
Marion Henry · Nantes, FR

Key dates

Filing date	Sep 19, 1974
Grant date	Jun 28, 1977
Priority date	—
Expiry date	Sep 19, 1994

Classification

Technology area (CPC H)Electricity
CPC primaryH01H11/041
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A contact system for power circuit breakers includes a nozzle body made of graphite which is pressed cold into a tube of cold-worked copper and is enclosed by the latter with a friction fit. A low-alloy copper is used as the material for the electrically conducting tube. Such a copper alloy can be made, for example, with 0.1 percent silver.

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