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:
Jul. 29, 2025
Filed:
Jun. 03, 2021
Applicant:
Hitachi Energy Ltd, Zürich, CH;
Inventors:
Anders Eriksson, Ludvika, SE;
Alejandra Ravanal, Uppsala, SE;
Christos Athanasopoulos, Borlänge, SE;
Assignee:
Hitachi Energy Ltd, Zürich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B 17/44 (2006.01); H01B 17/26 (2006.01); H01B 17/58 (2006.01); H01T 19/02 (2006.01);
U.S. Cl.
CPC ...
H01B 17/44 (2013.01); H01B 17/265 (2013.01); H01B 17/583 (2013.01); H01T 19/02 (2013.01);
Abstract
A wall bushing for high voltage application is presented. The wall bushing includes a grounded shield. The grounded shield includes a grading ring in a distal end thereof. The grading ring has an elliptic cross section with conjugate diameters, wherein a major diameter of the conjugate diameters is arranged in an axial direction of the grounded shield and a minor diameter of the conjugate diameters is arranged in a radial direction of the grounded shield. The major diameter is larger than the minor diameter.