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.:
Date of Patent:
Apr. 07, 2020
Filed:
Nov. 24, 2016
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Takahiro Umemoto, Chiyoda-ku, JP;
Yasutomo Otake, Chiyoda-ku, JP;
Manabu Yoshimura, Chiyoda-ku, JP;
Takashi Nada, Chiyoda-ku, JP;
Makoto Tsukiji, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Abstract
A stator coil accommodated in a slot of a rotary electric machine includes a coil conductor, a main insulating layer, a low resistance corona shield layer, and a stator coil extending outside the slot is provided with a first stator coil at the end of the low resistance corona shield layer has a first nonlinear resistance layer and a second nonlinear resistance layer partially overlapping with an end of the first nonlinear resistance layer, and a lower limit value of an electric resistivity of the second nonlinear resistance layer in a predetermined electric field is larger than an upper limit value of an electric resistivity of the first nonlinear resistance layer by one order of magnitude or more.