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:
Nov. 30, 2010
Filed:
Mar. 09, 2007
Masaya Inoue, Tokyo, JP;
Kanji Shinkawa, Tokyo, JP;
Masao Morita, Tokyo, JP;
Haruyuki Kometani, Tokyo, JP;
Toshiyuki Yoshizawa, Tokyo, JP;
Moriyuki Hazeyama, Tokyo, JP;
Keiichi Ito, Tokyo, JP;
Takeshi Mori, Tokyo, JP;
Hiroyuki Akita, Tokyo, JP;
Yoshinori Miyamoto, Tokyo, JP;
Shinji Nishimura, Tokyo, JP;
Masaya Inoue, Tokyo, JP;
Kanji Shinkawa, Tokyo, JP;
Masao Morita, Tokyo, JP;
Haruyuki Kometani, Tokyo, JP;
Toshiyuki Yoshizawa, Tokyo, JP;
Moriyuki Hazeyama, Tokyo, JP;
Keiichi Ito, Tokyo, JP;
Takeshi Mori, Tokyo, JP;
Hiroyuki Akita, Tokyo, JP;
Yoshinori Miyamoto, Tokyo, JP;
Shinji Nishimura, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A dynamoelectric machine including first and second permanent magnets held by first and second magnet seats on first and second yoke portions so as to face inner circumferential surfaces of tip end portions of first and second claw-shaped magnetic pole portions. The first and second permanent magnets are magnetically oriented in a reverse direction to orientation of a magnetic field that the field coil produces. The dynamoelectric machine enables permanent magnet holding reliability to be increased, induced voltage during no-load de-energization to be suppressed, and thermal demagnetization of magnets due to high-frequency magnetic fields that are induced by stator slots to be avoided.