The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 09, 2006
Filed:
Nov. 27, 2001
Johannes-gerhard Banghard, Friedrichsthal, DE;
Klemens Fieberg, Berlin, DE;
Michael Hahn, Berlin, DE;
Werner Hartmann, Weisendorf, DE;
Roman Renz, Berlin, DE;
Johannes-Gerhard Banghard, Friedrichsthal, DE;
Klemens Fieberg, Berlin, DE;
Michael Hahn, Berlin, DE;
Werner Hartmann, Weisendorf, DE;
Roman Renz, Berlin, DE;
Siemens Aktiengesellschaft, Munich, DE;
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 () is configured as a two-layer spiral contact with a lower layer consisting of a highly elastic material and an upper layer () consisting of a highly electroconductive material. A contact coat () consisting of a contact material is provided on the upper layer in the outer zone of every contact arm ().