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:
Oct. 20, 2015
Filed:
Oct. 19, 2010
Koji Yabe, Tokyo, JP;
Hayato Yoshino, Tokyo, JP;
Takahiro Tsutsumi, Tokyo, JP;
Kazuhiko Baba, Tokyo, JP;
Tomoaki Oikawa, Tokyo, JP;
Koji Yabe, Tokyo, JP;
Hayato Yoshino, Tokyo, JP;
Takahiro Tsutsumi, Tokyo, JP;
Kazuhiko Baba, Tokyo, JP;
Tomoaki Oikawa, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A rotor of an induction motor according to the present invention is a rotor including a squirrel-cage secondary conductor, wherein the rotor slot is constituted by an outer circumferential slot formed near an outer circumference of the rotor and an inner circumferential slot communicating with the outer circumferential slot and formed inside of the outer circumferential slot, a circumferential width TC of an innermost circumference of the outer circumferential slot is smaller than a circumferential width TD of an outermost circumference of the inner circumferential slot, and a circumferential width of the outer circumferential slot is smaller as the outer circumferential slot approaches to the outer circumference of the rotor.