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. 20, 1987
Filed:
Apr. 13, 1984
Yukio Miura, Yokohama, JP;
Yoshikazu Miyamoto, Kokubunji, JP;
Tokico Ltd., Kawasaki, JP;
Abstract
A control system for controlling a supply of a predetermined quantity of fluid comprises a pump for supplying a fluid, a motor for driving the pump, a measuring device for measuring a flow quantity of the fluid which is supplied by the pump, a device for presetting before starting a fluid supplying operation a preset value P which is indicative of a desired fluid supplying quantity, and a control device supplied with a measured flow quantity from the measuring device and the preset value P for controlling the application of a current to the motor. The control device comprises a first circuit for applying the current to the motor until the measured flow quantity from the measuring device becomes equal to P-K, where K is a predetermined value greater than an oversupply quantity .DELTA.Q of the fluid which is supplied by the pump after the current to the motor is cut off, and a second circuit for applying the current to the motor m times in terms of minute current applying durations until a total quantity Q of supplied fluid measured by the measuring device becomes approximately equal to the preset value P, where m is an integer, ##EQU1## and q'n is a quantity inclusive of an oversupply quantity measured by the measuring device in each of the minute current applying durations.