Patents by Inventor David R. Hyde

David R. Hyde 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).

  • Control arrangements for clothes driers and clothes driers including such control arrangements
    Patent number: 4209915
    Abstract: A clothes drier control circuit includes an electric heater regulated to maintain a constant predetermined temperature difference between the outlet and the ambient air. A digital reference value is stored representing the constant heat output level when a constant rate of evaporation is reached. The eventual reduction of the heat output to a given fraction of the reference value is detected so as to indicate that the clothes have reached a predetermined desired degree of dryness.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: July 1, 1980
    Assignee: U.S. Philips Corporation
    Inventors: Alexander H. F. Keuleman, David R. Hyde