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:
Oct. 28, 1986
Filed:
Jun. 05, 1984
Applicant:
Inventors:
Zempei Tani, Tondabayashi, JP;
Kiyoshi Ebina, Nara, JP;
Osamu Ichikawa, Matsubara, JP;
Mamoru Imaizumi, Nagoya, JP;
Assignees:
Sharp Kabushiki Kaisha, Osaka, JP;
Brother Industries, Ltd., Nagoya, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
2502 / ; 250205 ;
Abstract
Disclosed is a photoelectric encoder for providing an electrical pulse signal corresponding to the rotational position and direction of a disk rotor. The encoder possesses a feedback means including a second light sensitive means and associated circuit for obtaining the stabilized output signal thereof in spite of the fluctuation of the power source voltage and/or ambient temperature or adhesion of extraneous substances to light emitting and/or sensing elements and others.