Patents by Inventor George Thomas Addison

George Thomas Addison 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).

  • Apparatus for controlling the steering mechanism of a mining machine
    Patent number: 4120534
    Abstract: Apparatus for controlling the steering mechanism of a mineral mining machine having a nucleonic sensor adapted to sense the cutting horizon of the machine's cutter head relative to a boundary of the mineral seam, the apparatus providing an electronic cavity detector which freezes the machine's steering mechanism according to two operational modes when a cavity or crack/undulation respectively is detected. Thus, the machine is not steered in accordance with an erroneous sensor signal derived when the sensor is adjacent to the cavity or crack/undulation.
    Type: Grant
    Filed: November 30, 1976
    Date of Patent: October 17, 1978
    Assignee: Coal Industry (Patents) Limited
    Inventor: George Thomas Addison
  • Mining machines
    Patent number: 4006935
    Abstract: A ranging arm shearer mining machine has sensing means for sensing the position of the rotational axis of a cutter drum mounted on the ranging arm relative to the pivotal axis of the arm.
    Type: Grant
    Filed: May 19, 1975
    Date of Patent: February 8, 1977
    Assignee: Coal Industry (Patents) Limited
    Inventors: Terence John Gapper, George Thomas Addison, David Arthur Tate