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US 10,935,162 B2Granted
Device and method for pulling pipe
AssigneeTT Technologies, Inc.
InventorJohn A. Olander
Life of this patent
Estimating the term…
Abstract
A pipe puller system and methods of pipe extraction are shown. In one example a pipe to be replaced is pulled by attaching a pulling force to multiple locations along a length of the pipe. In one example pulling forces can be varied between different attachment locations to better control or eliminate tearing of the pipe. In one example, a pipe loosening device may be used prior to pulling the pipe from the ground.
Claims21
A method of pipe extraction, comprising:
- coupling a first cable to a distal end of a pipe buried in the ground;
- coupling a second cable to a proximal end of the pipe;
- and
- pulling both the first cable and the second cable in parallel to extract the pipe from the ground, wherein a pulling force of on the first cable is controlled separately from a pulling force on the second cable.
1 more element
A cable puller, comprising:
- a first drum coupled to a first drive motor;
- a second drum coupled to a second drive motor, the second drum rotating coaxially with the first drum and rotating independently from the first drum;
- and
- a drive controller adapted to control the first drive motor and the second drive motor to drive the first drum and the second drum at the same time and to adjust a pulling force independently for each of the first drum and the second drum, while maintaining a same pulling speed for both the first drum and the second drum.
1 more element
A pipe puller system, comprising:
- a lug to couple to a distal end of a pipe to be removed;
- a collar to couple to a proximal end of the pipe to be removed;
- a first cable to couple to the lug;
- a second cable to couple to the collar;
- and
- a dual cable puller to pull both the first cable and the second cable in parallel to apply force to the pipe to be removed at both the distal end and the proximal end at the same time, wherein the dual cable puller is configured to control a pulling force on the first cable separately from a pulling force on the second cable.
3 more elements
Dependencies are inferred from the claim text.