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:
Dec. 27, 1994
Filed:
Jan. 28, 1994
Applicant:
Inventor:
Eiji Osanai, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
355 53 ; 355 55 ; 355 75 ; 355 76 ;
Abstract
A parallel-moving apparatus includes a fixed table with a static pressure bearing pad, and a movable table with an inclined static pressure bearing pad. A driving plate having a wedge-shaped cross-section is disposed between the fixed table and the movable table, and both surfaces thereof are parallel to the static pressure bearing pad of the movable table and the static pressure bearing pad of the fixed table, and are noncontact-supported thereby. When the driving plate is moved by an actuator, the movable table is moved toward or away from the fixed table while keeping its parallelism to the fixed table.