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.

Date of Patent:
Nov. 07, 1989

Filed:

Dec. 23, 1987
Applicant:
Inventor:

Akio Itoh, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ; G01R / ;
U.S. Cl.
CPC ...
324150 ; 324144 ;
Abstract

An indicator includes an indicating member driving unit, an encoder plate, a rotational position detecting unit, and an indication position control unit. The indicating member driving unit rotates an indicating member mounted on a rotor shaft in accordance with an electrical signal input to cause the indicating member to indicate. The encoder plate rotates in association with the indicating member. The rotational position detecting unit detects an actual indication position of the indicating member on the basis of a rotational amount of the encoder plate. The indication position control unit controls the indication position of the indicating member so that the actual indication position of the indicating member detected by the rotational position detecting unit coincides with an indication position of the indicating member determined in correspondence to the electrical signal input.


Find Patent Forward Citations

Itoh, Akio. (1989). Electrical indicator having an optical position encoder (U.S. Patent No. 4879510). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4879510

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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