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:
Aug. 24, 2010
Filed:
Feb. 22, 2007
Masafumi Sakamoto, Kiryu, JP;
Toru Kobayashi, Kiryu, JP;
Masahiko Azegami, Kiryu, JP;
Yasuaki Motegi, Kiryu, JP;
Takaya Kato, Kiryu, JP;
Shoji Oiwa, Kiryu, JP;
Yasuo Matsuda, Kiryu, JP;
Kazuo Onishi, Kiryu, JP;
Tadashi Fukushima, Kiryu, JP;
Norimoto Tanaka, Kiryu, JP;
Masafumi Sakamoto, Kiryu, JP;
Toru Kobayashi, Kiryu, JP;
Masahiko Azegami, Kiryu, JP;
Yasuaki Motegi, Kiryu, JP;
Takaya Kato, Kiryu, JP;
Shoji Oiwa, Kiryu, JP;
Yasuo Matsuda, Kiryu, JP;
Kazuo Onishi, Kiryu, JP;
Tadashi Fukushima, Kiryu, JP;
Norimoto Tanaka, Kiryu, JP;
Nidec Servo Corporation, Kiryu-shi, JP;
Abstract
A manufacturing method of a hybrid permanent magnet type electric rotating machine including a stator that is constructed by winding excitation coils around respective main poles. A rotor is constructed by fixing a first rotor unit, which consists of a pair of rotor cores and a magnetic material sandwiched between the rotor cores, and a second rotor unit, which has the same construction as the first rotor unit, to a rotation shaft. The rotor is assembled to the stator to form an assembled body. The magnet material of the first rotor unit is magnetized in the axial direction by a magnetizing flux passing through a half of the assembled body in the axial direction. The magnet material of the second rotor unit is magnetized in the axial direction in an opposite polarity by a magnetizing flux passing through the remaining half of the assembled body in the axial direction.