Electric flush tank

Abstract

This invention relates to an electric flush tank designed for replacing the conventional mechanical flush tank, wherein a button switch attached to the outer wall of the water tank controls a solenoid which drives a connecting rod that in turn controls the water outlet. A microswitch installed on the connecting rod activates normally open switch B and forms normally open switch B normally closed switch D and a sustained circuit of said solenoid. A floating ball drives normally open switch A and normally closed switch D installed on the end of the connecting rod, in accordance with the rise and fall of water level. When the water is at its normal level, switch A is open and switch D is closed. When the water level in the tank is lowered, the switch A will part from the U-shaped channel wall and change to the closed state and the pilot light is lit up; switch D then contacts the U-shaped channel wall and changes to the open state, the solenoid becomes de-energized and the water outlet is closed for starting to supply water until the floating ball floats up and the pilot light goes out. This invention uses a floating ball to control switches A & D hitting the U-shaped channel wall to control, respectively, the pilot light and the power of the solenoid so as to control the water flush and to warn of any leak of water.

Dependencies are inferred from the claim text.