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:
Jul. 14, 2009
Filed:
Jun. 18, 2008
Masaya Inoue, Tokyo, JP;
Kanji Shinkawa, Tokyo, JP;
Shinji Nishimura, Tokyo, JP;
Hiroyuki Akita, Tokyo, JP;
Toshiyuki Yoshizawa, Tokyo, JP;
Moriyuki Hazeyama, Tokyo, JP;
Norihiro Murata, Tokyo, JP;
Masao Morita, Tokyo, JP;
Masaya Inoue, Tokyo, JP;
Kanji Shinkawa, Tokyo, JP;
Shinji Nishimura, Tokyo, JP;
Hiroyuki Akita, Tokyo, JP;
Toshiyuki Yoshizawa, Tokyo, JP;
Moriyuki Hazeyama, Tokyo, JP;
Norihiro Murata, Tokyo, JP;
Masao Morita, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A dynamoelectric machine includes: a permanent magnet holding portion that is disposed integrally so as to project from the yoke portion on a portion of the pair of yoke portions that faces an inner circumferential surface near a tip end of the plurality of claw-shaped magnetic pole portions; an arc-shaped magnet holding aperture that has a C-shaped cross section that is formed in each of the permanent magnet holding portions so as to have an aperture center that is oriented axially, in which at least one axial end is open, and that opens radially outward; a magnet holding member that is made of a nonmagnetic material that is fitted into and held by the magnet holding aperture; and a permanent magnet that is held by the magnet holding member so as to face the inner circumferential surface near the tip end of the claw-shaped magnetic pole portions, that is prepared into a prismatic body that has a quadrilateral cross section perpendicular to an axial direction, and that is magnetically oriented in a reverse direction to an orientation of a magnetic field produced by the field coil.