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:
Sep. 02, 2008
Filed:
Jun. 02, 2003
Applicant:
Shusaku Yoshida, Fukuoka, JP;
Inventor:
Shusaku Yoshida, Fukuoka, JP;
Assignee:
Kabushiki Kaisha Yaskawa Denki, Fukuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 33/18 (2006.01); H02K 33/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A voice coil motor of the movable coil type comprising a stator including a permanent magnet. The stator produces a magnetic field. A movable element made of an armature coil is provided. The armature coil is formed into a coil-shape having a cavity portion. A reinforcing beam made of non-magnetic and highly rigid material is formed at a substantial center of the cavity portion.