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:
Jan. 08, 1991
Filed:
Aug. 31, 1989
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Okuma Tekkosho, Aichi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B / ;
U.S. Cl.
CPC ...
318652 ; 318638 ; 341 10 ; 341 11 ;
Abstract
A linear encoder has a plurality short main scales arranged separately in their longitudinal direction and plural sliders situated in parallel with the longitudinal direction so as to more along these main scales. In operation, data obtained through these sliders are joined and processed in a signal processor in order to get position data of a table. Consequently, any position along a long movement stroke of the table can be detected easily and at a low cost.