F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
61/46
F16L 55/00 (2006.01) E03F 3/06 (2006.01) E03F 7/00 (2006.01) E21B 7/24 (2006.01) E21B 7/26 (2006.01) E21B 7/30 (2006.01) F16L 55/26 (2006.01)
Patent
CA 1145148
ABSTRACT Method and apparatus for substantially reconstitut- ing the internal diameter of sewer, water or drain line plastic pipes (4) after being located in situ comprising a movable housing (36), sized preferably to at least 95 per cent of the inside diameter of the pipe (4), and housing carried vibration means (52,66,82) for causing such reconstitution of said pipe diameter substantially by virtue of vibration induced reallocation of the pipe encom- pasing earth or filler bed material.
359248
Macrae & Co.
Williams Richard L.
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