Wells – Means for perforating – weakening – bending or separating pipe... – Cutter rotates circumferentially of pipe
Patent
1990-12-19
1992-02-18
Bilinsky, Z. R.
Wells
Means for perforating, weakening, bending or separating pipe...
Cutter rotates circumferentially of pipe
166 66, 407 56, 408 21, 409143, E03F 306, E21B 9709
Patent
active
050885537
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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Guthrie Kenneth R.
Ralston Trent H.
Veatch James C.
Bilinsky Z. R.
TRB Specialty Rehabilitation, Inc.
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