Patents by Inventor Michael J. Papinchak

Michael J. Papinchak 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).

  • Notched-flight feeder screws for briquetting operation
    Patent number: 4017241
    Abstract: Frictional drag on the feeder screw of a briquetting press is reduced and a concomitant reduction in feeder screw drive power requirements is realized by providing all but the lowermost flight on the feeder screw with regularly spaced notches to allow the reverse flow of limited amounts of the material being fed to the press.
    Type: Grant
    Filed: November 7, 1975
    Date of Patent: April 12, 1977
    Assignee: United States Steel Corporation
    Inventors: Michael J. Papinchak, Dino Ravasio
  • Method for controlling the injection of flux into a steelmaking vessel as a function of pressure differential
    Patent number: 3999977
    Abstract: This invention is directed to a method and apparatus for controlling the injection of flux into a steelmaking vessel as a function of the differential pressure between the flux containing tank and the main conduit which supplies oxygen to the tuyeres of the steelmaking vessel in the Q-BOP process. A branch conduit diverts a portion of the oxygen stream from the main conduit and flux from a pressurized flux-containing tank is injected into this secondary stream which secondary stream is then recombined with the main stream.
    Type: Grant
    Filed: January 31, 1975
    Date of Patent: December 28, 1976
    Assignee: United States Steel Corporation
    Inventors: William A. Kolb, Michael J. Papinchak