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.

Date of Patent:
Mar. 16, 2021

Filed:

Sep. 05, 2014
Applicant:

Hitachi Metals, Ltd., Tokyo, JP;

Inventors:

Hidehito Hanawa, Hitachi, JP;

Hideyuki Kikuchi, Hitachi, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B 7/02 (2006.01); H01B 3/30 (2006.01); H01F 27/32 (2006.01);
U.S. Cl.
CPC ...
H01B 7/0216 (2013.01); H01B 3/305 (2013.01); H01B 3/306 (2013.01); H01F 27/32 (2013.01);
Abstract

An insulated wire includes a conductor, a first insulation coating layer which is provided directly on the conductor and includes a polyamide-imide resin including dispersed inorganic fine particles, and a second insulation coating layer which is provided on the outer circumference of the first insulation coating layer and includes a polyamide-imide resin or a polyimide resin. A minimum winding multiplied diameter that does not cause a crack in the first insulation coating layer when the insulated wire is elongated by 30% by a method in compliance with JISC 3216 '5.1.1' and is wound around a winding bar is greater than 2d but smaller than 4d (where d is a conductor diameter of the insulated wire).


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