Patent · US Active

Electrical medium or high voltage switching device

US9627153B2 · kind B2 · utility

0Cited by

7References

13Claims

0Family size

Assignee

ABB Schweiz AG · CH

Inventors

Francesco Pisu · Birmenstorf, CH
Helmut Heiermeier · Waldshut-Tiengen, DE
Jadran Kostovic · Wettingen, CH
Jakub Korbel · Baden, CH
Luca Lienhard · Ottenbach, CH
Reto Karrer · Männedorf, CH
Timothy J. Sutherland · Gurnee, US

Key dates

Filing date	Nov 13, 2013
Grant date	Apr 18, 2017
Priority date	—
Expiry date	Dec 27, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH01H1/385
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

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.

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