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:
Dec. 31, 2002
Filed:
Jul. 05, 2000
Applicant:
Inventors:
Klaus Fröhlich, Baden, CH;
Walter Holaus, Zürich, CH;
Kurt Kaltenegger, Lengnau, CH;
Michael Steurer, Bülach, CH;
Assignee:
ABB Hochspannungstechnik AG, Zurich, CH;
Primary Examiner:
Int. Cl.
CPC ...
H01H 4/700 ;
U.S. Cl.
CPC ...
H01H 4/700 ;
Abstract
The switching point in a high or medium voltage switch contains two stationary switch pieces which are of cylindrical design and led coaxially into one another, to form an annular gap. A movable bridge switch piece constructed in the form of a contact ring fits into the annular gap when the switching point is closed. An electrodynamic drive comprising two coils moves the contact ring in the axial direction. By virtue of the low mass of the contact ring, the single moving part of the switching point can be switched on and off very quickly and efficiently.