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:
Sep. 23, 2025
Filed:
Dec. 15, 2022
Kabushiki Kaisha Toshiba, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a rotor includes a rotor core including magnetic poles arranged in a circumferential direction around a central axis, each magnetic pole including magnet holder slots each of which includes an opening end opened to an outer circumference of the rotor core, a first core portion between adjacent magnet holder slots, a second core portion between the magnet holder slots and the central axis, and a bridge connecting the first core portion and the second core portion, permanent magnets within the respective magnet holder slots, and a non-magnetic filling material filled into a cavity between the permanent magnet and the opening end in the magnet holder slot and joined to the permanent magnet and an inner wall of the magnet holder slot.