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:
Mar. 03, 2026
Filed:
May. 06, 2019
Applicant:
Hitachi Energy Ltd, Zürich, CH;
Inventors:
Esa Virtanen, Vaasa, FI;
Atso Jussila, Vaasa, FI;
Jaakko Ketola, Vaasa, FI;
Karita Forss, Vaasa, FI;
Assignee:
Hitachi Energy Ltd, Zurich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 27/245 (2006.01); H01F 3/02 (2006.01); H01F 27/26 (2006.01); H01F 27/32 (2006.01); H01F 30/12 (2006.01);
U.S. Cl.
CPC ...
H01F 27/245 (2013.01); H01F 3/02 (2013.01); H01F 27/263 (2013.01); H01F 27/324 (2013.01); H01F 30/12 (2013.01);
Abstract
An intermediate yoke for a power transformer with at least three legs, the intermediate yoke including a plurality of pre-stacked intermediate yoke modules for being fitted between the adjacent legs, laminated transformer sheets of an intermediate yoke module bound by stud bolts or other tie rods, the intermediate yoke including plurality of interconnection plates including at the at least one transformer sheet for binding the pre-stacked intermediate yoke modules together by both sides of the intermediate yoke module.