Patents by Inventor Richard L. Riach

Richard L. Riach 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).

  • In-the-hole drill
    Patent number: 4637475
    Abstract: A compact, easily disassembled, minimum headroom drilling unit is disclosed. The drill, especially useful for newly developed vertical retreat mining methods, drills at compound angles from the vertical and horizontal directions. Low headroom is achieved by the employment of a double acting hydraulic cylinder.
    Type: Grant
    Filed: January 23, 1984
    Date of Patent: January 20, 1987
    Assignee: Inco Limited
    Inventors: John R. England, Richard L. Riach