Automatic water-sprinkling controller

Details Automatic water-sprinkling controller Automatic water-sprinkling controller

A - Human Necessities

01

G

341/5

A01G 25/16 (2006.01) B05B 12/12 (2006.01)

Patent

CA 1224858

ABSTRACT OF THE DISCLOSURE An automatic water-sprinkling controller has a special main-valve connected with water supply for controlling a water-sprinkling system, which includes sprinklers, hose or pipes connected between said main-valve and said sprinklers, and a pilot tube for operating said main-valve. In the automatic controller, when the shortage of water of the ground is sensed by a moisture sensor comprising a ribbon which expands and contracts with humidity, a microswitch is turned on by the contraction of the ribbon to feed an electric current to an electronic circuit and to start a timer circuit. The electric current is instantly fed to a solenoid, which is mounted in a microvalve unit, to open this unit, through the electronic circuit. When the microvalve is opened, pilot water in the pilot tube, which is connected between the microvalve and the main-valve, starts to flow, and the main-valve is opened. These open states are held for a predetermined time period so that the sprinkler of the system can automatically perform its water-sprinkling operation for that time period.

453835

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