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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 11170934 B1

PDFFull Text
Date of Patent:
Nov. 09, 2021

Filed:

May. 14, 2019

Bifilar layer-insulated magnetic core and method for the production of a wound nanocrystalline magnetic core

Applicant:

Vacuumschmelze Gmbh & Co. KG, Hanau, DE;

Inventors:

Jörg Petzold, Kahl, DE;

Oliver Friedrich, Brachttal, DE;

Volker Kleespies, Jossgrund, DE;

Johannes Binkofski, Rodenbach, DE;

Assignee:

VACUUMSCHMELZE GMBH & CO. KG, Hanau, DE;

Attorney:

Dickinson Wright PLLC

Primary Examiner:

Xiaowei Su

Int. Cl.
CPC ...
H01F 41/02 (2006.01); H01F 1/147 (2006.01); C22C 38/12 (2006.01); C22C 38/16 (2006.01); C22C 38/02 (2006.01); B32B 15/08 (2006.01); B32B 15/18 (2006.01); B32B 7/12 (2006.01); B32B 38/00 (2006.01); B32B 37/12 (2006.01); H01F 3/04 (2006.01); H01F 27/25 (2006.01); B32B 37/20 (2006.01); H01F 41/063 (2016.01);
U.S. Cl.
CPC ...
H01F 41/0213 (2013.01); B32B 7/12 (2013.01); B32B 15/08 (2013.01); B32B 15/18 (2013.01); B32B 37/12 (2013.01); B32B 37/20 (2013.01); B32B 38/0012 (2013.01); C22C 38/02 (2013.01); C22C 38/12 (2013.01); C22C 38/16 (2013.01); H01F 1/14766 (2013.01); H01F 3/04 (2013.01); H01F 27/25 (2013.01); H01F 41/0226 (2013.01); B32B 2307/208 (2013.01); C22C 2202/02 (2013.01); H01F 41/063 (2016.01); Y10T 428/325 (2015.01);
Abstract

A method is provided for the production of a wound nanocrystalline magnetic core in which a nanocrystalline metal strip made of (FeM)CuSiBM'Xis pre-wound to form a first coil. An insulating foil is provided that is coated with an adhesive on at least one side. An adhesive is applied to the nanocrystalline metal strip to laminate the insulating foil onto the metal strip and thereby to stabilise the metal strip as it is wound off the coil. The laminated nanocrystalline metal strip and the insulating foil are bifilar wound to form a bifilar, layer-insulated coil.

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