Patents by Inventor Timothy S. Gammons

Timothy S. Gammons 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 and apparatus for steering a mining machine cutter
    Patent number: 4976495
    Abstract: The trailing drum of a double-ended ranging drum shearer is steered in a seam by producing an algorithm which determines, as a result of information derived from signals from the machine dependant on its tilt, direction and amount of movement along a face being cut. The height of the leading drum is used as a reference from which to determine the optimum position of the trailing drum in order that a constant quality of desired mined material is obtained.
    Type: Grant
    Filed: August 8, 1989
    Date of Patent: December 11, 1990
    Assignee: Coal Industry (Patents) Limited
    Inventors: Foster Lewins, Timothy S. Gammons