Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – With forming or cutting of pipe or cable
Patent
1995-04-28
1997-03-25
Buiz, Michael Powell
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
With forming or cutting of pipe or cable
405154, 138 97, 219535, 219524, 156433, 156293, 156 71, F16L 1028
Patent
active
056138075
ABSTRACT:
The present invention is directed to a method for making service connection to polyethylene replacement sewer pipe. Specifically, the method involves the steps of (1) locating the service; (2) excavating an opening less than two feet in diameter from the surface to the polyethylene replacement pipe at the service; (3) introducing a fusing apparatus on top of the polyethylene pipe and fusing a stack to the polyethylene pipe; and (4) drilling a opening into the polyethylene pipe through the fused stack. Before drilling the opening into the polyethylene pipe, the stack may be tested to make certain that there are no leaks in the fusing step and that the stack is securely connected to the polyethylene pipe.
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Myers Kurt S.
Reber Cleve C.
Buiz Michael Powell
Lagman Frederick L.
TTI Trenchless Technologies, Inc.
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