Patents by Inventor Wayne G. Halma

Wayne G. Halma 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).

  • Heating system
    Patent number: 4147301
    Abstract: A heating system comprises serially connected heating and holding coils connected in a closed heating liquid circulating circuit with a collector coil at the space to be heated. The heating and holding coils are disposed in a compartment wherein both are subject to direct heating by one or more gas burners, and flue gas is drawn through the compartment in heat exchange relation with the holding coil before being exhausted.
    Type: Grant
    Filed: April 13, 1977
    Date of Patent: April 3, 1979
    Inventors: Wayne G. Halma, Dale A. Snyder