Patents by Inventor Davis L. Bigham

Davis L. Bigham 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).

  • Acoustics energy dissipator for furnace
    Patent number: 5408986
    Abstract: The present invention involves a combustion box of a gas furnace which experiences oscillating combustion. The combustion box employs an opening in the housing which is tautly covered with a diaphragm made of elastic material such as silicone rubber. The elastic diaphragm transmits noise and vibration generated by the oscillating combustion of the gas burners in the combustion chamber and thereby dissipates that vibration and noise.
    Type: Grant
    Filed: October 21, 1993
    Date of Patent: April 25, 1995
    Assignee: Inter-City Products Corporation (USA)
    Inventor: Davis L. Bigham
  • Condensate overflow control for furnace
    Patent number: 4682579
    Abstract: A safety device for monitoring the condition of the condensate outlet conduit in a high efficiency furnace is provided which comprises a float member positioned in a condensate trap arranged to float on the condensate and to rise in response to a rising level of condensate in the trap to block the gas vent inlet. A pressure sensing device is utilized to sense the back pressure in the vent and when the float blocks the vent inlet, the back pressure increased and the sensing device will then operate to terminate operation of the furnace.
    Type: Grant
    Filed: February 21, 1986
    Date of Patent: July 28, 1987
    Assignee: Heil-Quaker Corporation
    Inventor: Davis L. Bigham