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:
Dec. 02, 2008
Filed:
Aug. 31, 2006
Applicants:
Hiroaki Naganuma, Kofu, JP;
Tokuro Kusunoki, Koshu, JP;
Inventors:
Hiroaki Naganuma, Kofu, JP;
Tokuro Kusunoki, Koshu, JP;
Assignee:
Nisca Corporation, Minamikoma-Gun, Yamanashi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 37/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electromagnetic device includes a magnet rotor having a rotary shaft and a stator having an excitation coil configured to apply a rotation force to the rotor. The magnet rotor includes a hollow cylindrical permanent magnet, a rotary shaft disposed in a hollow space portion of the permanent magnet, and a driving arm that rotates around the rotary shaft integrally with the permanent magnet. The magnet and driving arm are reliably secured, not easily separated during use, and includes a structure that facilitates machining and assemble.