Patents Assigned to McNally Tunneling Corporation
  • Patent number: 6206345
    Abstract: An apparatus for pushing tubular members along a tunnel, the apparatus comprising a frame shaped to receive a tubular member therein and having an open end shaped to receive the tubular member therethrough, and a pushing element mounted on and displaceable along the frame for engaging a tubular member within the frame and pushing the tubular member along the frame and through the open end. The apparatus further includes a drive motor mounted on the pushing element and engaging the frame, the drive motor displacing the pushing element along the frame relative to the open end.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: March 27, 2001
    Assignee: McNally Tunneling Corporation
    Inventors: Lawrence M. Lenahan, Bernam G. Fraley, Mark R. Kaletta, David E. Koehmstedt, Jr.