Patents by Inventor Stephen John Walsh

Stephen John Walsh 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).

  • Centrifugal scroll screen apparatus
    Patent number: 8257587
    Abstract: A horizontal centrifugal scroll screen apparatus including: a housing; a frusto-conical screen assembly mounted within the housing and having an outer inlet end and an inner discharge end, the screen assembly being mounted for driven rotation via a base-of-spoke piece disposed across the inner discharge end thereof; and a frusto-conical scroll assembly coaxially mounted for differential driven rotation within the screen assembly and including an outer closed end in the proximity of the outer inlet end of the screen assembly and being adapted to direct material to be screened from a material supply conduit to the outer inlet end of the screen assembly for screening and conveyance to an outlet provided in the base-of-spoke piece.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: September 4, 2012
    Assignee: Ludowici Australia Pty. Ltd.
    Inventors: Robert Bruce Angus, Michael Trench, Maurice Ross Munro, Stephen Thomas Wilmot, Stephen John Walsh, Terrance Shane McLoughlin
  • CENTRIFUGAL SCROLL SCREEN APPARATUS
    Publication number: 20100120598
    Abstract: A horizontal centrifugal scroll screen apparatus including: a housing; a frusto-conical screen assembly mounted within the housing and having an outer inlet end and an inner discharge end, the screen assembly being mounted for driven rotation via a base-of-spoke piece disposed across the inner discharge end thereof; and a frusto-conical scroll assembly coaxially mounted for differential driven rotation within the screen assembly and including an outer closed end in the proximity of the outer inlet end of the screen assembly and being adapted to direct material to be screened from a material supply conduit to the outer inlet end of the screen assembly for screening and conveyance to an outlet provided in the base-of-spoke piece.
    Type: Application
    Filed: April 5, 2007
    Publication date: May 13, 2010
    Inventors: Robert Bruce Angus, Michael Trench, Maurice Ross Munro, Stephen Thomas Wilmot, Stephen John Walsh, Terrance Shane Mcloughlin