Patents by Inventor Dwight E. Coleman

Dwight E. Coleman 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).

  • Double walled fireplace insert and method for loading from the outside
    Patent number: 4787365
    Abstract: A double walled fireplace insert is shown with an inner firebox and an outer shell to provide convection air channels between the parallel walls of the inner and outer units. A front panel is integral with the outer shell, and it covers the front of the insert. This front panel has room air intake vents that open into the said air channels, and warmed air outlet vents that open into the room to be heated by this fireplace. There is a circulating fan positioned within the convection air channels for governing the air movement through the said channels.
    Type: Grant
    Filed: November 12, 1987
    Date of Patent: November 29, 1988
    Inventor: Dwight E. Coleman