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:
Nov. 22, 2022

Filed:

Sep. 13, 2019
Applicant:

Sumida Corporation, Tokyo, JP;

Inventors:

Masateru Hashimoto, Ueda, JP;

Masaki Saito, Ueda, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 15/18 (2006.01); G01R 19/00 (2006.01); H01F 27/25 (2006.01); H01F 27/28 (2006.01); H01F 27/29 (2006.01); H01F 27/32 (2006.01);
U.S. Cl.
CPC ...
G01R 15/183 (2013.01); G01R 19/0092 (2013.01); H01F 27/25 (2013.01); H01F 27/2823 (2013.01); H01F 27/29 (2013.01); H01F 27/325 (2013.01);
Abstract

A coil wire includes a core wire and a winding wire. The winding wire is wound around a circumference of the core wire so as to form a plurality of spirals. The coil wire satisfies one of: (i) an outer surface of the core wire is exposed, and a distance between the outer surface of the core wire and an inner circumferential surface of part of the winding wire is smaller than a thickness of a first insulating film coated on the winding wire; or (ii) the outer surface of the core wire is coated by a second insulating film, and a distance between an outer surface of the second insulating film and the inner circumferential surface of part of the winding wire is smaller than a thickness of a thicker one of the first insulating film and the second insulating film.


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