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. 26, 2006
Filed:
Jan. 22, 2004
Applicants:
Tsuyoshi Nakamura, Kanagawa, JP;
Nobuhito Saji, Kanagawa, JP;
Yoshifumi Sugita, Kanagawa, JP;
Masato Taniguchi, Kangawa, JP;
Inventors:
Tsuyoshi Nakamura, Kanagawa, JP;
Nobuhito Saji, Kanagawa, JP;
Yoshifumi Sugita, Kanagawa, JP;
Masato Taniguchi, Kangawa, JP;
Assignee:
NSK Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A positioning apparatus has a stage, guide elements provided on both ends of the stage, and drive elements which are provided at one of both ends of the stage and move the stage along the guide elements. Like linear guide railsA,B and linear guide bearingsA,B, two guide elements are provided in an area where a ball screw shaftserving as a drive element is placed. One guide element is provided in an area where a non-drive element is provided.