Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Toshiyuki Yoshizawa0
Masaya Inoue0
Moriyuki Hazeyama0
Shinji Nishimura0
Kanji Shinkawa0
Masao Morita0
Date of Patent
October 20, 2009
0Patent Application Number
121893870
Date Filed
August 11, 2008
0Patent Primary Examiner
Patent abstract
A magnet seat is disposed on a second yoke portion and projects into respective spaces between circumferentially-adjacent pairs of second claw-shaped magnetic pole portions, and permanent magnets are disposed only near the second yoke portion so as to be held by the magnet seat so as to face an inner circumferential surface near a tip end of each of a plurality of first claw-shaped magnetic pole portions. Each of the permanent magnets is magnetically oriented in a reverse direction to an orientation of a magnetic field that a field coil produces.
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