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:
Jun. 19, 2018
Filed:
Aug. 25, 2015
Wisconsin Alumni Research Foundation, Madison, WI (US);
Thomas A. Lipo, Middleton, WI (US);
Zhentao Stephen Du, Madison, WI (US);
Wisconsin Alumni Research Foundation, Madison, WI (US);
Abstract
A rotor includes pole portions, a first permanent magnet, a second permanent magnet, and a third permanent magnet. Each pole portion includes a center, a back, and a front rotor core portion. A first slot is embedded in the center rotor core portion. A second slot is embedded in the back rotor core portion. A third slot is embedded in the front rotor core portion. The center rotor core portion is mounted axially between the front rotor core portion and the back rotor core portion. The permanent magnets are mounted, respectively, in the slots of each pole portion. A maximum length of the first permanent magnet is greater than twice a maximum length of the second permanent magnet. The maximum length of the second permanent magnet is equal to a maximum length of the third permanent magnet. The permanent magnets are aligned relative to a pole axis of each pole portion.