Pipe pusher
AssigneeMcNally Tunneling Corporation
InventorsLawrence M. Lenahan, Bernam G. Fraley, Mark R. Kaletta, David E. Koehmstedt, Jr.
Life of this patent
Estimating the term…
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.
Claims29
An apparatus for pushing tubular members along a tunnel comprising:
- a frame shaped to receive a tubular member therein and having a first open end shaped to receive said tubular member therethrough;
- a pushing element mounted on and displaceable along said frame for engaging a tubular member within said frame and pushing said tubular member along said frame and through said first open end;
- a drive motor mounted on said pushing element and engaging said frame, said drive motor displacing said pushing element along said frame relative to said first open end;
- and
- an end clamp positioned adjacent to said first open end of said frame for retaining a tubular member located substantially downstream of said frame while said tubular member is mated with said downstream tubular member.
Dependencies are inferred from the claim text.