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. 02, 2009
Filed:
Nov. 30, 2005
Kanako Nemoto, Tsuchiura, JP;
Yasushi Takano, Kasumigaura, JP;
Kazuhiko Takahashi, Hitachi, JP;
Kazuo Shima, Nonoichi, JP;
Kazuo Nishihama, Hitachi, JP;
Kanako Nemoto, Tsuchiura, JP;
Yasushi Takano, Kasumigaura, JP;
Kazuhiko Takahashi, Hitachi, JP;
Kazuo Shima, Nonoichi, JP;
Kazuo Nishihama, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Provided is a rotating electric machine which can restrain vibration and noise induced by a radial electromagnetic force of the rotating electric machine, and in which a rotor is divided into first to fourth four rotating pieces having axial lengths of 0.29L, 0.71L, 0.71L and 0.29L where 2L is an axial length of a rotor or stator core, and secondary conductors defining effective magnetic pole opening angles, are arranged being shifted by a value which is equal to a phase difference of electric angle between axial sections of the rotor pieces in order to define skews so that phase differences of electric angles are continuous between axial sections of the first and second rotor pieces, the skews being continuous between the third and fourth rotor pieces but being not continuous between the second and third rotor pieces arranged being shifted by a value which is equal to a phase difference of electric angle between axial sections of the rotor.