Patents by Inventor Dale M. Clarke

Dale M. Clarke 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).

  • Cable hanger for electrically powered mine vehicles
    Patent number: 4846320
    Abstract: A power cable hanger for a mine including a roof mounted rail, a carriage travelling on the rail, a plurality of open-sided hooks to support a cable spaced at intervals along the path of the rail, an arm on the carriage to pick up and place the cable on the hooks and to retrieve the cable from the hooks and cable means, independent of the power cable to cause the carriage to travel backwards and forwards on the rail.
    Type: Grant
    Filed: November 6, 1987
    Date of Patent: July 11, 1989
    Assignee: Inco Limited
    Inventor: Dale M. Clarke