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:
Mar. 26, 2019
Filed:
Dec. 13, 2016
Industrial Technology Research Institute, Hsinchu, TW;
Kun-Yi Liang, Hsinchu County, TW;
Tse-Liang Hsiao, Hsinchu, TW;
Chien-Chang Wang, Hsinchu County, TW;
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu, TW;
Abstract
A permanent magnet rotor and a permanent magnet rotary assembly are provided. The permanent magnet rotor includes a rotor core, a plurality of permanent magnets and a non-magnetic retaining ring. The rotor core is magnetically permeable. The rotor core has an outer surface and a plurality of dovetail grooves on the outer surface. The permanent magnets are respectively disposed in the plurality of dovetail grooves. The non-magnetic retaining ring is inserted over the rotor core. The plurality of permanent magnets are surrounded by the non-magnetic retaining ring. The non-magnetic retaining ring is magnetically impermeable.