Patents by Inventor John W. Dresh

John W. Dresh 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).

  • Vortex inhibitor
    Patent number: 8591802
    Abstract: An improved vortex inhibitor 20 for separating slag from molten metal during the discharge of molten metal through a nozzle 14 includes a generally uniform castable refractory body 22 having a generally hemispherical or hemi-ellipsoid shape having a plurality of generally triangular shaped projection elements 30, 32, 34, 36, 38 and 40) defining a plurality of generally constant dimension grooves 42, 44, 46, 48, 50 and 52 extending downward from the top side 26 toward an apex 41 of the vortex inhibitor 20.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: November 26, 2013
    Assignee: Tetron, Inc.
    Inventors: Robert J. Koffron, Ross A. Jacobs, John W. Dresh
  • VORTEX INHIBITOR
    Publication number: 20110186602
    Abstract: An improved vortex inhibitor 20 for separating slag from molten metal during the discharge of molten metal through a nozzle 14 includes a generally uniform castable refractory body 22 having a generally hemispherical or hemi-ellipsoid shaped body 22 having a plurality of generally triangular shaped projection elements 30, 32, 34, 36, 38 and 40) defining a plurality of generally constant dimension grooves 42, 44, 46, 48, 50 and 52 extending downward from the top side 26 toward an apex 41 of the vortex inhibitor 20.
    Type: Application
    Filed: December 11, 2008
    Publication date: August 4, 2011
    Applicant: TETRON, INC.
    Inventors: Robert J. Koffron, Ross A. Jacobs, John W. Dresh