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:
Jul. 27, 1993
Filed:
Nov. 27, 1991
Takao Mizutani, Nagoya, JP;
Yukio Aoki, Nagoya, JP;
Mitsubishi Denki K.K., Tokyo, JP;
Abstract
In a position detecting method and an apparatus therefor, a signal processing circuit including a semiconductor laser, a light receiving element and the like is arranged on the outside of a servomotor. An article to be detected is arranged within the servomotor. The signal processing circuit and the article are connected to each other by a single or a plurality of optical fibers. A laser light is applied to surface properties formed inevitably at processing of a surface of the article, to produce a signal of a reflected light. The signal of the reflected light and a beforehand stored position signal of the article are compared with each other so as to be converted into a rotational-angle signal, thereby detecting a position of the article.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile