Patents by Inventor Donald F. Bill

Donald F. Bill has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Water heater control system utilizing flexible thermostat cover plate
    Patent number: 5101471
    Abstract: A system including apparatus and method for retrofitting and controlling the temperature of a water heater. The system allows manual adjustment of a thermostat control setscrew from a location exterior of the water heater housing and includes a tool maintained in engagement with the setscrew by a flexible cover plate within which the tool is rotatably mounted and which continually urges the tool toward the setscrew.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: March 31, 1992
    Inventor: Donald F. Bill