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. 17, 1991
Filed:
Oct. 26, 1990
Seiichi Sato, Tokyo, JP;
Yoshi Kurosawa, Tokyo, JP;
Kazuo Yamaguchi, Tokyo, JP;
Atsushi Ueda, Hyogo, JP;
Masami Matsumura, Hyogo, JP;
Optec D.D. Melco Laboratory Co., Ltd., Tokyo, JP;
Optec Dai-Ichi Denko Co., Ltd., Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A photointerruptor for use in an optical transmission-type rotary encoder comprising a rotatable pulse scale having a code pattern and a light-emitting optical fiber and a light-receiving optical fiber secured to a housing with their end faces being opposed to each other on both sides of the code pattern. The housing has a housing main body a pair of optical fiber opposing members for previously inserting the top ends of the respective optical fibers and a housing main body having fitting recesses for holding the optical fiber opposing members with the end faces of the optical fibers being opposed to each other at a predetermined distance on both sides of the code pattern. The housing main body may be constituted by a pair of optical fiber opposing members engageable with each other.