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. 23, 2001
Filed:
Sep. 22, 1998
Applicant:
Inventors:
Kenji Narita, Kawasaki, JP;
Takashi Suzuki, Kawasaki, JP;
Hiroyuki Okudera, Kawasaki, JP;
Yuji Kawai, Kawasaki, JP;
Yuji Souma, Kawasaki, JP;
Koji Kawanishi, Kawasaki, JP;
Yoshichika Fukuda, Kawasaki, JP;
Assignee:
Fujitsu General Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 2/112 ; H02K 1/00 ; H02K 1/22 ;
U.S. Cl.
CPC ...
H02K 2/112 ; H02K 1/00 ; H02K 1/22 ;
Abstract
In a permanent magnet rotor type electric motor in which a permanent magnet is embedded in a rotor, a permanent magnet used for a magnetic pole of one polarity in a rotor core and another permanent magnet used for a magnetic pole of the other polarity have different configurations and materials from each other, so that the selecting range for the magnetic flux density and the reluctance torque of the permanent magnet rotor type electric motor can be increased.