Automatic bathtub filing control system

Abstract

A control system for filling a bathtub which automatically shuts off the bathtub faucet when the water has reached a desired level, by detecting a volume of water that has passed through the dispensing pipe or a level of water in the bathtub. In the preferred embodiment a timer is provided to automatically shut off the bathtub faucet after a preset time interval, as a backup or as an independent filling regulator. In one embodiment a temperature sensor or timer is provided to adjust the flow of hot water and cold water as necessary to maintain a constant temperature which has been set by the user. In another embodiment one or more timers are provided to control the flow of hot water and cold water separately as necessary to reach the desired temperature.

1 . A system for automatically shutting off a bathtub faucet filling a bathtub through a water dispensing pipe, comprising: 
 a fill regulator mechanism for detecting a water volume, a water level in the bathtub or an elapsed water dispensing time, and    a valve actuated by the regulator mechanism for shutting off a flow of water to the tub when water in the tub has reached a desired fill level.    
   
   
       2 . The system of  claim 1  in which the fill regulator mechanism comprises a water volume meter associated with the water dispensing pipe.  
   
   
       3 . The system of  claim 1  in which the fill regulator mechanism comprises at least one timer.  
   
   
       4 . The system of  claim 1  in which the fill regulator mechanism comprises a water level detector for detecting a level of water in the bathtub.  
   
   
       5 . The system of  claim 1  further comprising a temperature sensor coupled to a control panel, the control panel regulating a supply of hot and/or cold water to the tub to maintain a constant preset temperature.  
   
   
       6 . The system of  claim 3  further comprising a separate valves regulated by the timer to regulate a supply of hot and/or cold water to the tub to achieve a preset temperature.  
   
   
       7 . The system of  claim 6  further comprising a separate timer for each valve.