Quantified water-saving device for dual-flush toilets

Abstract

The present invention relates to a dual flushing quantified water-saving device in toilets with a single push-button ( 11 ) which actuates, by moving upwards, an overflow pipe ( 3 ), provided with a float ( 5 ) capable of maintaining the device open until the complete flush if there are no further forces acting on said pipe except its own weight, and it furthermore has a variable extra weight ( 6 ) arranged at an intermediate height which, in a first instantaneous pressing, acts together with the weight of the assembly, closing the outlet valve ( 4 ) before the complete emptying, a pre-established volume of water remaining in the tank, whilst upon performing a second pressing during the refilling of the latter, the pipe ( 3 ) remains in a raised position and the outlet valve ( 4 ) open until the complete emptying of the tank as the variable extra weight ( 6 ) has disappeared, it being sufficient that the second press be instantaneous so as to achieve the complete flush.

1 . (canceled)  
   
   
       2 . (canceled)  
   
   
       3 . (canceled)  
   
   
       4 . (canceled)  
   
   
       5 . A dual flushing quantified water-saving device for a toilet comprising: 
 a single push-button;    an overflow pipe assembly comprising an overflow pipe ( 3 ) including on its lower part a sealing disc that opens and closes an outlet valve ( 4 ), wherein, when the single push-button is pressed, the overflow pipe ( 3 ) moves upwards;    a float ( 5 ) which keeps the device open until a complete flush if there are no further forces acting on the overflow pipe assembly except its own weight; and    a variable weight ( 6 ) arranged at an intermediate height within a tank, which includes liquid located inside a deposit which fills with water jointly with the tank and includes a plurality of lower openings on its lower part calibrated in size to allow an outlet and inlet of water to an inside of the deposit at a slower speed than that of a flow of water through the outlet valve and an inlet valve of the tank, calibrated such that the deposit is completely emptied when the push- button is pressed for a first time after the tank has been refilled;    wherein the variable weight acts together with a weight of the overflow pipe assembly to close the outlet valve ( 4 ) before the tank is completely emptied such that a predetermined volume of water is left in the tank;    wherein the variable weight ( 6 ) empties once the tank is partially flushed as the water has been emptied from inside the deposit through the lower openings;    wherein if the push-button is pressed a second time before the tank is refilled, the overflow pipe ( 3 ) is still raised and the outlet valve ( 4 ) is open, such that a full volume of water in the tank is completely emptied.    
   
   
       6 . The device of  claim 5 , wherein a height of the weight ( 6 ) is adjustable, such that once a water outlet and inlet speed in the deposit ( 6 ) is calibrated, the volume of water in the tank that is emptied when the push-button is pressed for the first time after the tank is refilled is determined according to the height of the weight.  
   
   
       7 . The device of  claim 5 , wherein the weight ( 6 ) comprises a deposit with an axial opening according to an outer diameter of the pipe ( 3 ) including a projecting pivot corresponding to a series of vertically aligned notches on the pipe, such that once the float is introduced and positioned at the required height, the float may be turned until the pivot coincides with one of the notches, such that the float is retained in a desired position.  
   
   
       8 . A method of operating a dual flushing quantified water-saving device for a toilet, comprising the step of instantaneously pressing a single push- button to flush a pre-determined quantity of water less than a total quantity of water in the tank; 
 wherein the water-saving device comprises:    the single push-button;    an overflow pipe assembly comprising an overflow pipe ( 3 ) including on its lower part a sealing disc that opens and closes an outlet valve ( 4 ), wherein, when the single push-button is pressed, the overflow pipe ( 3 ) moves upwards;    a float ( 5 ) which keeps the device open until a complete flush if there are no further forces acting on the overflow pipe assembly except its own weight; and    a variable weight ( 6 ) arranged at an intermediate height within a tank, which includes liquid located inside a deposit which fills with water jointly with the tank and includes a plurality of lower openings on its lower part calibrated in size to allow an outlet and inlet of water to an inside of the deposit at a slower speed than that of a flow of water through the outlet valve and an inlet valve of the tank, calibrated such that the deposit is completely emptied when the push- button is pressed for a first time after the tank has been refilled;    wherein the variable weight acts together with a weight of the overflow pipe assembly to close the outlet valve ( 4 ) before the tank is completely emptied such that a predetermined volume of water is left in the tank;    wherein the variable weight ( 6 ) empties once the tank is partially flushed as the water has been emptied from inside the deposit through the lower openings;    wherein if the push-button is pressed a second time before the tank is refilled, the overflow pipe ( 3 ) is still raised and the outlet valve ( 4 ) is open, such that a full volume of water in the tank is completely emptied.    
   
   
       9 . The method of  claim 8 , further comprising the step of repeating the step of instantaneously pressing the push- button to flush a pre-determined quantity of water that is less than a total quantity of water in the tank after the tank has refilled with water.  
   
   
       10 . The method of  claim 8 , further comprising the step of instantaneously pressing the push-button a second time before the tank has refilled with water to flush the total quantity of water in the tank.  
   
   
       11 . The method of  claim 8 , wherein a height of the weight ( 6 ) is adjustable, such that once a water outlet and inlet speed in the deposit ( 6 ) is calibrated, the volume of water of the tank that is emptied when the push-button is pressed the first time after the tank is refilled is determined according to the height of the weight.  
   
   
       12 . The method of  claim 8 , wherein the weight ( 6 ) comprises a deposit with an axial opening according to an outer diameter of the pipe ( 3 ) including a projecting pivot corresponding to a series of vertically aligned notches on the pipe, such that once the float is introduced and positioned at the required height, the float may be turned until the pivot coincides with one of the notches, such that the float is retained in a desired position.