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:
Jul. 08, 2003
Filed:
Jun. 07, 2000
Applicant:
Inventors:
Toshihide Kikuchi, Tokyo, JP;
Masahiro Totsu, Kawasaki, JP;
Kazuya Ono, San Carlos, CA (US);
Yutaka Uda, Tokyo, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02K 4/102 ;
U.S. Cl.
CPC ...
H02K 4/102 ;
Abstract
Disclosed is a linear motor device provided with a movable member, a stator having coils, and a control system for powering selected coils among the coils in accordance with a position of the movable member. The control system powers only the minimum number of coils contributing to the generation of thrust in relation with the current position of the movable member.