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:
Jul. 21, 2020
Filed:
Aug. 09, 2016
Fuji Electric Co., Ltd., Kawasaki-shi, Kanagawa, JP;
Toshiharu Mochida, Suzuka, JP;
FUJI ELECTRIC CO., LTD., Kawasaki-Shi, Kanagawa, JP;
Abstract
A multiple of communication hole pairs each including two communication holes are formed in a rotor in a rotor rotation direction. A region between the two communication holes of each communication hole pair is a center bridge that connects a core portion of the rotor and an umbrella form portion on an outer side in the rotor radial direction, and each communication hole communicates with an outer periphery of the rotor. A multiple of radiating projections protrude in the rotor radial direction from a central axis of rotation between respective pairs of the communication hole pairs. The radiating projections have side surface projections protruding to the umbrella form portion side neighboring in the rotor rotation direction. The side surface projections cover a whole or one portion of the umbrella form portion from the outer peripheral side of the rotor.