Patents by Inventor Robert W. Fest

Robert W. Fest 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).

  • Casting furnace
    Patent number: 7896060
    Abstract: An apparatus and process are provided for casting liquid metals into molds in a casting furnace comprising a controlled environment melt chamber and a mold lock chamber. A mold is supplied to the controlled environment melt chamber for a pour, and removed from the same chamber via a mold lock chamber. A mold transport system moves the mold through the mold lock chamber. The mold transport system comprises a rotary screw drive, a cylinder screw drive, or hydraulic drive located external to the furnace. Alternatively the mold transport system comprises a rack and worm screw drive.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: March 1, 2011
    Assignee: PV/T, Inc.
    Inventors: Lennie L. Ashburn, Robert W. Fest, John H. Mortimer
  • CASTING FURNACE
    Publication number: 20080223538
    Abstract: An apparatus and process are provided for casting liquid metals into molds in a casting furnace comprising a controlled environment melt chamber and a mold lock chamber. A mold is supplied to the controlled environment melt chamber for a pour, and removed from the same chamber via a mold lock chamber. A mold transport system moves the mold through the mold lock chamber. The mold transport system comprises a rotary screw drive, a cylinder screw drive, or hydraulic drive located external to the furnace. Alternatively the mold transport system comprises a rack and worm screw drive.
    Type: Application
    Filed: June 2, 2008
    Publication date: September 18, 2008
    Applicant: PV/T, INC.
    Inventors: Lennie L. Ashburn, Robert W. Fest, John H. Mortimer
  • Casting furnace
    Patent number: 7383873
    Abstract: An apparatus and process are provided for casting liquid metals into molds in a casting furnace comprising a controlled environment melt chamber and a mold lock chamber. A mold is supplied to the controlled environment melt chamber for a pour, and removed from the same chamber via a mold lock chamber. A mold transport system moves the mold through the mold lock chamber. The mold transport system comprises a rotary screw drive, a cylinder screw drive, or hydraulic drive located external to the furnace. Alternatively the mold transport system comprises a rack and worm screw drive.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: June 10, 2008
    Assignee: PV/T, Inc.
    Inventors: Lennie L. Ashburn, Robert W. Fest, John H. Mortimer