Patents by Inventor Kenneth E. Heller

Kenneth E. Heller 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).

  • Forced air circulation electric convection space heating system utilizing heated air discharge to preheat air to be heated
    Patent number: 5299278
    Abstract: An electric forced circulation space heating system has a first heat exchanger provided with electric heating elements for heating a heat exchange fluid, such as antifreeze or oil, pumped through a closed loop including first flow passages of a second heat exchanger having second flow passages in heat exchange relationship with the first flow passages thereof. A blower forces room air through the second flow passages of the second heat exchanger to be heated by the heated liquid flowing through the first flow passages thereof. A third heat exchanger downstream of the second heat exchanger has first flow passages with an inlet receiving heated air from the second flow passes of the second heat exchanger and an outlet for discharge of the heated air into the space to be heated.
    Type: Grant
    Filed: May 20, 1991
    Date of Patent: March 29, 1994
    Inventor: Kenneth E. Heller