Patents by Inventor Colin Bewick

Colin Bewick 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).

  • Auxiliary cutter for a mining machine having coaxial cutter drums
    Patent number: 5338104
    Abstract: A mining machine has a forward rotating cutter head mounted on a boom. The cutter head comprises at least two cutter drums in co-axial end to end formation and spaced apart by an arm of the boom. An auxiliary cutter device is located in the space between the drums and is adapted for intermittent engagement of the coal face when the cutter drums are cutting.
    Type: Grant
    Filed: June 16, 1993
    Date of Patent: August 16, 1994
    Assignee: Anderson Group Limited
    Inventor: Colin Bewick