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. 22, 2002
Filed:
Nov. 16, 2000
Tetsuya Fukuda, Okayama, JP;
Takahiro Nishimura, Okayama, JP;
Jun Sato, Okayama, JP;
Koji Ono, Okayama, JP;
Takumi Nishimoto, Okayama, JP;
Yukihiro Ishihara, Osaka, JP;
Masaki Sawada, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The disclosed rotary encoder includes contact substrate and movable contact plate . Substrate contains three fan-shaped conductive layers A, B, and C on positions having a same distance from the center of substrate . On the other hand, movable contact plate retains three elastic contacts A, B, C, and rotates. The three contacts have continuity with each other and disposed at positions with a same distance from the center of substrate , spaced at a radial angle of 120°. When contact plate is rotated, any two out of three elastic contacts A, B, and C consecutively contact with any two out of three conductive layers A, B, and C. Through the continuity, an electric signal is led out from terminals A, B, and C.