×

Gas Water Heater Shut Off Apparatus

  • US 20030177818A1
  • Filed: 06/10/2003
  • Published: 09/25/2003
  • Est. Priority Date: 06/10/2003
  • Status: Abandoned Application
First Claim
Patent Images

1. An improved apparatus for detecting a water leak and automatically shutting off a gas water heater of the type having a pressure relief valve and a thermocouple for generating a voltage when a flame is present, the apparatus comprising:

  • an electrically operated valve, wherein the valve shuts off the supply of cold water to the water heater when electrically powered;

    a gas valve configured to remain open when connected to the thermocouple voltage source;

    a connector means for providing an electrical connection between the gas valve and thermocouple such that the thermocouple voltage supplied to the gas valve may be interrupted through the connector means;

    a switching means for interrupting the supply of thermocouple voltage to the gas valve, wherein the switching means is connected to the connector means, and interrupts the thermocouple voltage when the switching means is electrically powered;

    a pan located in close proximity to the bottom of the gas water heater for collecting water leaking from the water heater tank or pressure relief valve; and

    a water level detection switch means located within the pan for connecting an electrical power source to the switching means-and the electrically operated valve in response to a predetermined amount of water in the pan, such that the switching means interrupts thermocouple voltage to effect closing of the gas valve and the electrically operated valve shuts off the supply of water to the water heater.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×