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. 02, 1986
Filed:
Jan. 22, 1986
Kunihiko Takeuchi, Kanagawa, JP;
Fujio Baba, Tokyo, JP;
Kiyoshi Hayashi, Tokyo, JP;
Yasuo Shimomura, Tokyo, JP;
Yuji Morishige, Chiba, JP;
Tokyo Keiki Company, Ltd., Tokyo, JP;
Abstract
A digital valve control apparatus for regulating opening of a digital valve by a pulse motor, comprising means for setting desired position and displacement speed of the pulse motor and means for selecting the set position and the set speed in response to instruction signals. While pulses having period corresponding to the set speed are produced by a frequency divider, the present position of the pulse motor is compared with the set position by a comparator. The pulses are fed to a counter which counts up or down to supply the output for driving the pulse motor until the comparator produces the coincident output.