Automatic toilet bowl overflow prevention device

Abstract

The automatic toilet bowl overflow prevention apparatus comprises of a water level sensor attaches to the rim of the toilet bowl, a hollow flexible tube connecting the water level sensor to an air vented toilet tank flapper. When the water level sensor trips, it opens an air valve and allows air to vent out from the air vented toilet tank flapper. Venting the air out of the air vented toilet tank flapper will close the toilet tank flush valve. Thus shutting off water to the toilet bowl and prevents it from overflowing. This apparatus uses an air vented toilet tank flapper for demonstration. An air vented toilet tank ball will work too. This invention is totally automatic and does not require any electrical power to operate.

We claim:  
     
         1 . An automatic toilet bowl overflow prevention device comprising: 
 a water level float valve comprising a float, an air inlet and an air outlet;    a flexible tube comprising an air inlet port and an air outlet port, said air inlet port of said water level float valve being connected to said air outlet of said flexible tube;    an air vented toilet tank flapper comprising an air chamber, an air vent port, and a water port, said air inlet port of said flexible tube being connected to said air vent port of said air vented toilet tank flapper.