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:
Feb. 19, 2008
Filed:
Feb. 14, 2005
Applicant:
Hideo Tanaka, Utsunomiya, JP;
Inventor:
Hideo Tanaka, Utsunomiya, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 27/58 (2006.01); G03B 27/42 (2006.01); H02K 41/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A positioning apparatus including a coarse motion stage, a first moving mechanism to move the coarse motion stage with a large stroke, a fine motion stage, and a second moving mechanism to move the fine motion stage with a small stroke relative to the coarse motion stage. In addition, at least two couplings transmit forces from the coarse motion stage to the fine motion stage, and the couplings apply the forces in the same direction from at least two sides of the fine motion stage.