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 9424978 B1

Date of Patent:

Aug. 23, 2016

Filed:

May. 03, 2013

Magnetically shielded three phase rotary transformer having three magnetic cores

Applicant:

Labinal Power Systems, Blagnac, FR;

Inventor:

Cedric Duval, Samois sur Seine, FR;

Assignee:

LABINAL POWER SYSTEMS, Blagnac, FR;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Mangtin Lian

Int. Cl.

CPC ...

H01F 21/06 (2006.01); H01F 30/12 (2006.01); H01F 17/06 (2006.01); H01F 27/24 (2006.01); H01F 38/18 (2006.01); H01F 27/28 (2006.01); H01F 27/255 (2006.01);

U.S. Cl.

CPC ...

H01F 27/24 (2013.01); H01F 27/255 (2013.01); H01F 27/2823 (2013.01); H01F 30/12 (2013.01); H01F 38/18 (2013.01);

Abstract

A three-phase transformer including a primary portion and a secondary portion, the primary portion including a first body made of ferromagnetic material and primary coils, the secondary portion including a second body made of ferromagnetic material and secondary coils, the first body defining a first annular slot of axis A and a second annular slot of axis A, the primary coils including a first toroidal coil of axis A in the first slot, a second toroidal coil of axis A in the second slot, and one or more third toroidal coils connected in series, the third coils being wound around one of the legs, and passing via slots in the leg.

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