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:
Mar. 09, 2010
Filed:
Jul. 18, 2007
Applicant:
Benjamin Huang, Milpitas, CA (US);
Inventor:
Benjamin Huang, Milpitas, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 41/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A linear voice coil motor having a radially magnetized magnet structure. The voice coil motor includes an outer yoke an inner yoke magnetically coupled with and extending inside of the outer yoke. An air gap defined between the outer yoke and the inner yoke. A voice coil assembly is mounted so as to enable movement between the voice coil assembly and at least one of the yokes. In one embodiment the magnet structure is an isotropic magnet structure. In one embodiment the magnet structure is formed by a plurality of ring magnets. In one embodiment the magnet structure is formed by a plurality of isotropic ring magnets.