Patents by Inventor David John Cartwright

David John Cartwright 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).

  • Method of and apparatus for removing material
    Patent number: 6893323
    Abstract: Apparatus for removing material from a workpiece is described, in which the apparatus comprises means for advancing an abrasive tool towards the workpiece to bring an abrasive surface of the tool into contact with the surface of the workpiece, means for moving the abrasive surface relative to the workpiece to remove material from the workpiece, means for detecting a load applied to the tool by the workpiece, and means for controlling the rate of advancement of the abrasive tool towards the workpiece depending on the magnitude of the detected load.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: May 17, 2005
    Assignee: Emerson Electric UK Limited
    Inventors: Nicolas John Dougill, David John Cartwright, Laurence Alfred Bell
  • Method of and apparatus for removing material
    Publication number: 20020173224
    Abstract: Apparatus for removing material from a workpiece is described, in which the apparatus comprises means for advancing an abrasive tool towards the workpiece to bring an abrasive surface of the tool into contact with the surface of the workpiece, means for moving the abrasive surface relative to the workpiece to remove material from the workpiece, means for detecting a load applied to the tool by the workpiece, and means for controlling the rate of advancement of the abrasive tool towards the workpiece depending on the magnitude of the detected load.
    Type: Application
    Filed: November 9, 2001
    Publication date: November 21, 2002
    Inventors: Nicolas John Dougill, David John Cartwright, Laurence Alfred Bell