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. 31, 2006
Filed:
Jun. 18, 2003
Applicants:
Masahiro Masuzawa, Saitama-ken, JP;
Keiko Kikuchi, Saitama-ken, JP;
Inventors:
Masahiro Masuzawa, Saitama-ken, JP;
Keiko Kikuchi, Saitama-ken, JP;
Assignee:
Hitachi Metals, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A polar-anisotropic ring magnet having magnetization directions in alignment with its normal line at each magnetic pole position and in alignment with its tangential line at each middle position between adjacent magnetic poles, and having a substantially constant angle difference in a magnetization direction between adjacent elements, the elements being obtained by division at an equal angle pitch between the magnetic pole position and the middle position adjacent to the magnetic pole position.