Patents by Inventor Thomas N. Rampley

Thomas N. Rampley 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).

  • Flue gas recirculation system
    Patent number: 4995807
    Abstract: A system is provided for reducing the amount of nitrogen oxides produced by conventional gas-fired boilers, water heaters, or other heat transfer devices by diluting the fuel gas with an inert gas. The system includes a mixing unit or region for diluting fuel gas with an inert gas before the fuel gas is supplied to a burner assembly of a combustion device. Flue gas from the combustion chamber of the combustion device may be used to dilute the fuel gas.
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: February 26, 1991
    Assignee: Bryan Steam Corporation
    Inventors: Thomas N. Rampley, Paul G. Hoffarth