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:
Feb. 23, 2021
Filed:
Sep. 13, 2017
Mitsubishi Electric Corporation, Tokyo, JP;
Kazuhiro Shono, Tokyo, JP;
Shinichi Ito, Tokyo, JP;
Yuki Tamura, Tokyo, JP;
Kanji Shinkawa, Tokyo, JP;
Mizuho Shimizu, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A plurality of magnet holes are arranged in a circumferential direction. Void portions are provided at both ends in the circumferential direction of each magnet hole. Flow holes penetrating in the axial direction are formed, between the magnet holes adjacent in the circumferential direction, on an inner side in a radial direction with respect to the magnet holes. Each core has: first groove portions via which the void portions and the flow holes communicate with each other; and second groove portions via which the void portions and the outer circumferences of the cores communicate with each other and which serve as discharge ports. The end plates have: first holes through which the flow holes are exposed and which serve as intake ports; and tab portions which are located on downstream sides in a rotation direction of the first holes and which assist air intake.