Water saving toilet flush system

Abstract

A water saving toilet flush system to selectively practice a partial or a full flush at the selection of the user is disclosed. A partial flush operation is initiated by depressing the control handle to commence the flush to connect a magnet assembly and to simultaneously unseat an associated flapper valve. Then the control lever is lifted to uncouple the magnet assembly and allow a float assembly to control seating of the flapper valve. A full flush operation is initiated in the same manner the partial flush operation is initiated. However, the control lever is allowed to remain depressed, causing the magnet assembly to remain coupled until a water level is low enough to cause the flapper valve to uncouple the magnet assembly and to drop to a closed position completing the full flush cycle.

1 . A water saving toilet flush system including a tank having a water outlet, a source of water communicating with the tank, and an overfill tube, the improvement comprising:
 a normally closed flapper valve cooperating with the water outlet;   a float mounted for reciprocal movement on the overfill tube;   a float chain connecting a flapper valve to the float to assist in pulling the flapper open;   a lever arm for selectively opening the flapper valve and allowing floatation of the float and movement thereof toward the open end of the overfill tube; and   magnet for selectively securing the flapper valve in an open position until the lever arm is actuated to release the magnet allowing the float to control the closure of the flapper valve to produce a partial flush, or the lever arm remains unactuated allowing the water in the tank to exit the water outlet and finally the weight of the flapper valve is sufficient to release the magnet allowing the flapper valve to close to produce a full flush.   
     
     
         2 . A water saving toilet flush system including a tank having a water outlet a source of water communicating with the tank, and an overfill tube, the improvement comprising:
 a normally closed weighted flapper valve cooperating with the water outlet;   float assembly mounted for reciprocal movement;   means connecting the float assembly to the flapper valve to assist in pulling the weighted flapper open;   a lever arm for selectively opening the flapper valve and allowing floatation of the float assembly and upward movement thereof; and   connection means for selectively securing the flapper valve in an open position until the lever arm is either actuated to release the connection means allowing the float to control the closure of the flapper valve to produce a partial flush, or the lever arm remains unactuated allowing the water in the tank to exit the water outlet and finally the weight of the flapper valve is sufficient to release the connection means allowing the flapper valve to close to produce a full flush.   
     
     
         3 . The invention defined in  claim 2  wherein the float assembly includes a main body housing longitudinal axis mounted for reciprocal movement on the overfill tube, and a float mounted to the main body. 
     
     
         4 . The invention defined in  claim 3  wherein the float is selectively axially adjustable in respect of the main body. 
     
     
         5 . The invention defined in  claim 2  wherein the connection means is a magnet. 
     
     
         6 . The invention defined in  claim 2  wherein the connection means is a detent. 
     
     
         7 . The invention defined in  claim 2  wherein means connecting the float assembly to the flapper valve is a float chain. 
     
     
         8 . The invention defined in  claim 2  wherein the flapper valve is weighted.