Patents by Inventor Stuart H. Critchley

Stuart H. Critchley 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).

  • Slurry blasting apparatus for removing scale from sheet metal
    Patent number: 7601226
    Abstract: An apparatus and method of removing scale from the surfaces of processed sheet metal employs a scale removing medium propelled by counter-rotating pairs of wheels positioned in close proximity to the sheet metal surfaces.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: October 13, 2009
    Assignee: The Material Works, Ltd.
    Inventors: Kevin C. Voges, Stuart H. Critchley, Alan R. Mueth
  • Sheet Metal Oxide Detector
    Publication number: 20090002686
    Abstract: An apparatus for detecting residual oxide or scale present on a metal surface following pickling or mechanical processing of the metal surface to remove scale makes use of laser light that is reflected off of the metal surface, a reflection detector that detects the absolute reflectivity and polarization of the reflecting laser light, a roughness measurement sensor, and a computerized control system that uses combinations of the information from the three sensors to provide an indication of the scale remaining on the metal surface.
    Type: Application
    Filed: June 29, 2007
    Publication date: January 1, 2009
    Applicant: THE MATERIAL WORKS, LTD.
    Inventors: Kevin C. Voges, Stuart H. Critchley, Victor Wasyl Chupil
  • Slurry Blasting Apparatus for Removing Scale from Sheet Metal
    Publication number: 20080108281
    Abstract: An apparatus and method of removing scale from the surfaces of processed sheet metal employs a scale removing medium propelled by counter-rotating pairs of wheels positioned in close proximity to the sheet metal surfaces.
    Type: Application
    Filed: September 14, 2006
    Publication date: May 8, 2008
    Applicant: THE MATERIAL WORKS, LTD.
    Inventors: Kevin C. Voges, Stuart H. Critchley, Alan R. Mueth