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:
Aug. 05, 2008
Filed:
Apr. 27, 2004
Applicants:
Hitoshi Sato, Tochigi, JP;
Yasuhito Sasaki, Tochigi, JP;
Yoshikazu Miyajima, Tochigi, JP;
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 41/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A plane motor device that includes a stator unit, a movable unit movable along a plane above the stator unit, first and second coil units at one or both of the movable unit and the stator unit, in which coil units a current flows for driving the coil unit, and an enclosure partitioned into a plurality of separate regions. The enclosure encloses the first and second coil units in two respective regions of the plurality of separate regions. Each of the two regions has a cooling channel through which cooling refrigerant flows separately from the cooling channel of the other region.