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. 08, 2022
Filed:
Jun. 12, 2018
Nidec Corporation, Kyoto, JP;
Shigeharu Sumi, Kyoto, JP;
NIDEC CORPORATION, Kyoto, JP;
Abstract
A stator configured to rotate of a rotor about a central axis includes a first member having a plurality of first concavity portions located in a circumferential direction at a preset interval, each of first concavity portions having a pair of first inner side face and second inner side face whose a circumferential-directional distance therebetween with respect to the central axis becomes narrow from one radial-directional side towards the other radial-directional side with respect to the central axis; and a plurality of second members, each of which having a first protrusion extending along the first inner side face, a second protrusion extending along the second inner side face, and a teeth portion protruding from the first protrusion and the second protrusion to the other radial-direction side, wherein the plurality of second members are formed to corresponding to the plurality of concavity portions, respectively.