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:
Nov. 28, 2023
Filed:
May. 10, 2018
Mitsubishi Electric Corporation, Tokyo, JP;
Atsushi Ishikawa, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A rotor core has first and second core parts in an axial direction. The first and second core parts have first and second magnet insertion holes in which rare earth magnets are disposed. A width of the first magnet insertion hole is wider than the second magnet insertion hole. The first core part has one or more slits elongated in the radial direction, the number of which is N1 (≥1), on a radially outer side of the first magnet insertion hole. The second core part has no, one or more slits elongated in the radial direction, the number of which is N2 (≥0), on a radially outer side of the second magnet insertion hole. N1>N2 is satisfied. A ratio of a length of the second core part in the axial direction to that of the rotor core is greater than or equal to 70% and less than 100%.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile