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:
Apr. 18, 2017
Filed:
Nov. 13, 2013
Abb Schweiz Ag, Baden, CH;
Francesco Pisu, Birmenstorf, CH;
Helmut Heiermeier, Wutoeschingen, DE;
Jadran Kostovic, Wettingen, CH;
Jakub Korbel, Baden, CH;
Luca Lienhard, Ottenbach, CH;
Reto Karrer, Stafa, CH;
Timothy Sutherland, Zweidlen, CH;
ABB Schweiz AG, Baden, CH;
Abstract
An electrical switching device for medium or high voltage circuits having at least a nominal contact arrangement, wherein the nominal contact arrangement includes at least a first nominal contact including a plurality of contact fingers forming a finger cage concentric with respect to a longitudinal axis, wherein the contact fingers are separated from one another by empty slots extending up to a free end of the contact fingers. The empty slots include first and second empty slots, wherein the second empty slots are shorter than the first empty slots, and wherein the contact fingers are grouped in groups, with the contact fingers of each group being separated by second empty slots and the contact fingers of adjacent groups being separated by first empty slots.