B - Operations – Transporting – 21 – K
Patent
B - Operations, Transporting
21
K
26/155
B21K 21/00 (2006.01) F16L 55/00 (2006.01) H02J 3/18 (2006.01) H02P 23/00 (2006.01)
Patent
CA 1145123
- 1 - Abstract: The invention provides a method for expanding a pipe at a predetermined location therealong by positioning a conductive wire at the required location and rapidly discharging a known electrical charge through the wire to explode, thereby initiating a shock wave of known energy which expands the pipe plastically by a controlled amount. As applied to the repair of a pipe at a normally inaccessible location, a plastically deformable metallic sleeve capable of being cold welded to the pipe is positioned at the required location, and a conductive wire is exploded electromagnetically within the sleeve to expand the sleeve into cold welding relation with the pipe.
366078
Cenanovic Matija
Ridout & Maybee Llp
LandOfFree
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