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. 23, 2001
Filed:
Sep. 10, 1999
Reiji Mitarai, Hachioji, JP;
Kenji Hisamoto, Utsunomiya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A positioning apparatus includes a movable member, an actuator for driving the movable member in a moving direction, a gravity guide having a reference surface for supporting the movable member in a gravity direction, a yaw guide for guiding the movable member from one side thereof in the moving direction by means of a guide surface perpendicular to the reference surface, and a measuring device for measuring a position of the movable member in the moving direction. A distance from a measuring position at which the measuring device measures the position of the movable member to the guide surface is longer than a distance from a driving position at which the actuator drives the movable member to the guide surface.