Patents by Inventor Charles S. Ingersoll

Charles S. Ingersoll 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).

  • Wood fuel heating apparatus and combustion process
    Patent number: 4479481
    Abstract: A boiler having a downdraft solid fuel firebox with a refractory hearth structure with a plurality of parallel internal conduits forming an internal combustion chamber, a heat exchanger below the firebox connected to the outlet of the internal combustion chamber, an outlet blower connected to the outlet of the heat exchanger and an air inlet valve controllable with the outlet blower to control the induction of air through the boiler for automatic boiler control.
    Type: Grant
    Filed: August 13, 1981
    Date of Patent: October 30, 1984
    Inventors: Charles S. Ingersoll, E. Peter Schellens