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:
Oct. 28, 2003
Filed:
Dec. 20, 2001
Applicant:
Inventors:
Hiromi Inoguchi, Chofu, JP;
Ikuichiro Nawa, Atsugi, JP;
Assignee:
Mitsumi Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B 2/108 ;
U.S. Cl.
CPC ...
G11B 2/108 ;
Abstract
In an electromagnetic linear actuator including a fixed portion with a predetermined axis and a movable portion holding an object, a single guide shaft is coupled to the fixed portion and the movable portion and guides the movable portion to be movable with respect to the fixed portion only along the predetermined axis. A position sensor is coupled to the fixed portion and the movable portion and detects a current position of the movable portion with respect to the fixed portion. The position sensor is cooperated with the single guide shaft to inhibit rotation of the movable portion around the predetermined axis.