Wells – Processes – With indicating – testing – measuring or locating
Patent
1990-01-25
1992-04-21
Bilinsky, Z. R.
Wells
Processes
With indicating, testing, measuring or locating
166 557, 166 66, 408 1R, 408 21, 409132, 409143, E21B 4709, E03F 306
Patent
active
051058820
ABSTRACT:
A system for cutting lateral holes in plastic pipe liners at the locations of lateral taps in a surrounding pipe comprises a cylindrical body which is inserted into the pipe liner, and remote devices for observing and controlling operation of the body. A rotary cutter, having axial and radial cutting teeth, can be remotely translated in three dimensions with respect to the body, making it possible to cut non-circular holes; the body can be rotated about its axis within the liner as well. A video camera on the sled permits observation of the cutter. Lateral taps are precisely located by monitoring return signals from a microwave transmitter/receiver on the sled, and identifying points of maximum deviation in microwave reflection.
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Ralston Trent H.
Veatch James C.
Bilinsky Z. R.
TRB Specialty Rehabilitation, Inc.
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