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:
Mar. 21, 2017
Filed:
May. 26, 2011
Akihiro Yamamura, Chiyoda-ku, JP;
Kazuhisa Takashima, Chiyoda-ku, JP;
Masatsugu Nakano, Chiyoda-ku, JP;
Akihiro Yamamura, Chiyoda-ku, JP;
Kazuhisa Takashima, Chiyoda-ku, JP;
Masatsugu Nakano, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A permanent magnet motor () is configured such that mN≠K is satisfied to an integer m, where the pole number of a rotor () is K and the number of divided iron cores (-) of a stator () is N, and N values of r(θ), r(θ+360°/N), . . . , r(θ+(i−1)×360°/N), . . . , r(θ+(N−1)×360°/N) are equal so that the absolute value of the difference between any two of the N values becomes up to a predetermined value, where r(θ) is an inner radius defined as, on a plane perpendicular to a rotary shaft () of the rotor (), a distance from the rotary shaft () center to a surface of the stator iron core () facing the rotor () where an angle from a fitting portion () of the partial iron core () is θ on the perpendicular plane, θ taking 0 to 360°/N.