Patent · US Expired

Contact arrangement for a vacuum switch tube

US7041929B2 · kind B2 · utility

4Cited by

8References

21Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Johannes-Gerhard Banghard · Friedrichsthal, DE
Klemens Fieberg · Berlin, DE
Michael Hahn · Folsom, US
Werner Hartmann · Hamburg, DE
Roman Renz · Berlin, DE

Key dates

Filing date	Nov 27, 2001
Grant date	May 9, 2006
Priority date	—
Expiry date	Nov 27, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH01H2033/6648
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a contact arrangement for a vacuum switch tube for low-voltage power switches. The aim of the invention is to reduce the contact force required to control short circuit currents. To this end, a twin-contact contact arrangement is used wherein every contact comprises a plurality of separate individual contacts having a defined spring rate. At least one of the contact bodies (4) is configured as a two-layer spiral contact with a lower layer consisting of a highly elastic material and an upper layer (7) consisting of a highly electroconductive material. A contact coat (9) consisting of a contact material is provided on the upper layer in the outer zone of every contact arm (10).

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