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. 08, 2011
Filed:
Dec. 09, 2008
Rolf Blissenbach, Rolling Hills Estates, CA (US);
Khiet Le, Mission Viejo, CA (US);
Dang Dinh Dang, Garden Grove, CA (US);
Jonathan Bird, Lomita, CA (US);
Rolf Blissenbach, Rolling Hills Estates, CA (US);
Khiet Le, Mission Viejo, CA (US);
Dang Dinh Dang, Garden Grove, CA (US);
Jonathan Bird, Lomita, CA (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
An internal permanent magnet machine ('IPM machine') of the type used, for example, with traction motors and hybrid electric vehicles, includes a rotor having a plurality of equal-sized (e.g., rectilinear) segmented ferrite magnets arranged in one or more layers. The magnets are inserted within rotor slots that are larger than the magnets themselves, such that one or more air gaps are formed adjacent to the magnets in each layer.