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:
Jun. 13, 1995
Filed:
Dec. 01, 1993
Yoshihiko Kuriyama, Kumagaya, JP;
Hitachi Metals, Ltd., , JP;
Abstract
A voice coil motor including (a) an E-shaped yoke having a center yoke portion and side yoke portions and constituted by a plurality of thin plates having the same configuration and stacked together; (b) a counter yoke member secured to an open end of the yoke; (c) permanent magnets secured to inner sides of the side yoke portions such that the same magnetic poles are opposed; (d) a hollow, cylindrical, movable coil supported for movements along the center yoke portion; and (e) a covering made of a corrosion-resistant material and provided integrally on outer surfaces of the yoke and the permanent magnets.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile