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:
Oct. 06, 1998
Filed:
Sep. 10, 1997
Applicant:
Inventors:
Yuzuru Suzuki, Shizuoka-ken, JP;
Sakae Fujitani, Hamakita, JP;
Haruyoshi Hino, Shizuoka-ken, JP;
Naomi Inoue, Fukuroi, JP;
Hideki Sakiyama, Shizuoka-ken, JP;
Assignee:
Minebea Co., Ltd., Nagano-ken, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ; H02K / ;
U.S. Cl.
CPC ...
310257 ; 310 / ;
Abstract
A claw pole type synchronous motor has input frequency increasing portions in a form of notches or holes formed in portions of claw poles which have the lowest magnetic flux densities so that the motor operates in a range from a low frequency to a high frequency without lowering torques too much.