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:
Jan. 04, 2005
Filed:
Jan. 08, 2003
Ryoichi Takahata, Hitachi, JP;
Shinichi Wakui, Hitachi, JP;
Haruo Koharagi, Juo, JP;
Satoshi Kikuchi, Hitachi, JP;
Miyoshi Takahashi, Hitachi, JP;
Masaharu Senoh, Narashino, JP;
Keiji Noma, Shisui, JP;
Hiroshi Hirayama, Oyama, JP;
Takashi Seshimo, Ohira, JP;
Shigeya Kawaminami, Ohira, JP;
Ryoichi Takahata, Hitachi, JP;
Shinichi Wakui, Hitachi, JP;
Haruo Koharagi, Juo, JP;
Satoshi Kikuchi, Hitachi, JP;
Miyoshi Takahashi, Hitachi, JP;
Masaharu Senoh, Narashino, JP;
Keiji Noma, Shisui, JP;
Hiroshi Hirayama, Oyama, JP;
Takashi Seshimo, Ohira, JP;
Shigeya Kawaminami, Ohira, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a permanent magnet type rotating electric machine comprising a stator of which concentratedly wound armature windings are disposed in a plurality of slots formed in a stator core so as to surround teeth and a rotor accommodating permanent magnets in a plurality of permanent magnet insertion holes formed in a rotor core, a part of outer circumferential faces of slots is formed to extend substantially in parallel with a part of inner circumferential faces of the teeth, thereby, a permanent magnet type rotating electric machine with limited noises can be realized.