Patents by Inventor Donald E. Rywak

Donald E. Rywak 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).

  • Fuel delivery system for a furnace or kiln
    Patent number: 4234106
    Abstract: A series of operatively interconnected fuel flow regulators are adapted to meter and direct the flow of particulate fuel from a fuel conveying system into the burners of a furnace or kiln. Each regulator is fed by a conveying system and includes a feeder housing having a flow metering impeller and feed rotor arrangement. Each housing includes an adjustable fuel orifice communicating with a respective burner.
    Type: Grant
    Filed: December 1, 1978
    Date of Patent: November 18, 1980
    Assignee: Pullman Incorporated
    Inventors: Donald E. Rywak, James L. Griffith, Frederick D. Rhodes, Otto Kovalsics