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. 08, 2015
Filed:
Mar. 08, 2013
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Khwaja M. Rahman, Troy, MI (US);
Sinisa Jurkovic, Sterling Heights, MI (US);
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 1/27 (2006.01); H02K 21/12 (2006.01); H02K 1/02 (2006.01); H02K 21/14 (2006.01);
U.S. Cl.
CPC ...
H02K 1/274 (2013.01); H02K 1/02 (2013.01); H02K 1/2766 (2013.01); H02K 21/14 (2013.01);
Abstract
A rotor core for an internal permanent magnet machine includes at least one ferrite pole and at least one rare earth pole, arranged radially about an axis in alternating relationship. The ferrite poles define a plurality of first pole cavities, and the rare earth poles define a plurality of second pole cavities. One of a plurality of ferrite magnets is disposed within each of the first pole cavities of the ferrite poles, and one of a plurality of rare earth magnets is disposed within each of the second pole cavities of the rare earth poles.