Patents by Inventor Harold F. Harris

Harold F. Harris 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).

  • Multi-fuel forced air furnace
    Patent number: 4020822
    Abstract: Solid fuel supported on a grate within the combustion chamber of a furnace, is ignited by a liquid or gas fuel burner projecting its flame entirely within the same combustion chamber. A forced inflow of air is preheated by being conducted below and in surrounding relation to the combustion chamber and then passed in heat exchange relation to heat transfer ducts through which combustion products are conducted from the combustion chamber.
    Type: Grant
    Filed: September 19, 1975
    Date of Patent: May 3, 1977
    Assignee: Oneida Heater Company, Incorporated (Entire)
    Inventor: Harold F. Harris