Patents by Inventor Oliver B. McWilliams

Oliver B. McWilliams 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).

  • Heavy gas, including radon gas, expeller assembly
    Patent number: 5191874
    Abstract: A heavy gas expeller assembly to be connected to a furnace assembly to collect, direct, and expel harmful heavy gases and fluids, including radon gas, from adjacent a support floor. The heavy gas expeller assembly includes 1) a gas collector duct member connected to an exhaust gas duct assembly from the furnace assembly; and 2) an outside air inlet duct member to transfer fresh outside air into a return air duct member connected to the furnace assembly to replace the air and heavy gases that are to be expelled through an exhaust fluid duct assembly connected to the furnace assembly.
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: March 9, 1993
    Inventor: Oliver B. McWilliams