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. 06, 2005
Filed:
Oct. 05, 2004
Takehiro Imamura, Saitama, JP;
Minoru Nakajima, Saitama, JP;
Takehiro Imamura, Saitama, JP;
Minoru Nakajima, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
In a rotorincluding a plurality of permanent magnet piecesfixed in a plurality of magnet insertion slotsprovided on the outer periphery of a rotor yoke, respectively, and the rotor yokehaving concaveseach provided between the permanent magnet piecesadjacent to each other and protrusionseach provided in each the concavesto protrude outwardly in the radial direction of the rotor yoke, between the sandwiching angle α formed by two sides connecting both outer ends A and A' of each the concavesto the center axis O of the rotor yoke 40 and the sandwiching angle β formed by two sides connecting both outer ends B and B′ of each the protrusionsto the center axis O of the rotor yoke, the following relationship is satisfied:0.3<β/α<0.5.