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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.:

US 10685773 B1

PDFFull Text
Date of Patent:
Jun. 16, 2020

Filed:

Dec. 05, 2013

Transformer insulation

Applicant:

Abb Schweiz Ag, Baden, CH;

Inventors:

Adam Michalik, Bibice, PL;

Patricia Ricketts, South Boston, VA (US);

Massimo Carmignoto, Montegrotto Terme, IT;

Jayram Yadava, Ballia, IN;

Roberto Zannol, Montegrotto Terme, IT;

Miljenko Hrkac, Monselice, IT;

Alessandro Mattozzi, Sundbyberg, SE;

Claire Pitois, Sundbyberg, SE;

Emmanouil Logakis, Baden-Dättwil, CH;

Harald Martini, Västerås, SE;

Ilario Scian, Cary, NC (US);

Orlando Girlanda, Västerås, SE;

Rudi Velthuis, Lauchringen, DE;

Spiros Tzavalas, Lengnau, CH;

Assignee:

ABB Schweiz AG, Baden, CH;

Attorney:

Sage Patent Group

Primary Examiner:

Ronald Hinson

Int. Cl.
CPC ...
H01F 27/10 (2006.01); H01F 27/14 (2006.01); B29C 45/00 (2006.01); H01F 27/24 (2006.01); H01F 27/28 (2006.01); H01F 41/00 (2006.01); H01B 3/47 (2006.01); H01F 27/32 (2006.01); B29K 101/12 (2006.01); B29K 309/00 (2006.01); B29K 105/12 (2006.01); B29L 31/34 (2006.01);
U.S. Cl.
CPC ...
H01F 27/14 (2013.01); B29C 45/0005 (2013.01); H01B 3/47 (2013.01); H01F 27/24 (2013.01); H01F 27/2823 (2013.01); H01F 27/32 (2013.01); H01F 41/00 (2013.01); B29K 2101/12 (2013.01); B29K 2105/12 (2013.01); B29K 2309/00 (2013.01); B29K 2995/0007 (2013.01); B29L 2031/3412 (2013.01); Y10T 29/49021 (2015.01);
Abstract

The present invention relates to an electrical transformer comprising an electrical insulator and a winding of an electrical conductor around a core, said insulator being formed of an essentially non-porous composite material comprising a resin matrix and up to 85% by weight of insulating fibres surrounded by the resin matrix, the composite material having a maximum moisture content of less than 0.5% by weight at 23° C. and 50% relative humidity.

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