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:
May. 10, 1988
Filed:
Dec. 29, 1986
Takao Yoshida, Fukuoka, JP;
Kiyoshi Fujino, Fukuoka, JP;
Toto Ltd., Fukuoka, JP;
Abstract
A water supply control apparatus includes a flushing device to be supplied with water, a water supply valve for controlling the supply of water to the flushing device, a driving signal generator for selectively generating driving signals of first and second periods, respectively, a sensor responsive to one, at a time, of the driving signals for detecting whether there is a user of the flushing device at one of the first and second periods, to produce a sensor signal selectively including a user-present signal and a user-absent signal of the one period, and a control circuit responsive to the sensor signal for controlling the water supply valve. The control circuit includes a first control section having a switching element responsive to the user-absent signal for issuing a first switching signal to the driving signal generator to generate the driving signal of the first period and responsive to the user-present signal for issuing a second switching signal to the driving signal generator to generate the driving signal of the second period and an output element responsive to the sensor signal for issuing a water supply valve control signal, a second control section responsive to the water supply valve control signal for controlling the water supply valve, and a battery as a power supply for operating the water supply valve, the driving signal generator, the sensor, the first and second control sections. The second period is shorter than the first period.