Patents by Inventor David Barwacz

David Barwacz 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).

  • Air conditioning system
    Patent number: 5140829
    Abstract: A space-cooling system based upon the present invention cools the space through a heat exchanger carrying ground water that has been slightly chilled by a heat pump. The chiller can be referenced to the outflow water from the space heat exchanger, or to fresh ground water. The heated discharged water can be utilized as pre-heated household water, or discharged in irrigation or to a drainage system.
    Type: Grant
    Filed: July 16, 1991
    Date of Patent: August 25, 1992
    Inventor: David Barwacz