发明名称 METHOD FOR EXTRACTING UNDERGROUND PIPE
摘要 A method for the removal of a ductile pipe includes passing a strand through the ductile pipe, crimping the ductile pipe in at least one location so that it is secured in a crimp about the strand and pulling the strand from an end of the ductile pipe with a winch or hydraulic puller. Preferably, the strand is a solid wire or wire rope and may be pushed through the pipe with a power wire feeding apparatus. As the strand and ductile pipe are pulled, segments of the pipe and strand are cut at the end of the pipe proximate the winch or puller.
申请公布号 WO2005104792(A3) 申请公布日期 2006.08.31
申请号 WO2005US14776 申请日期 2005.04.28
申请人 EARTH TOOL COMPANY, L.L.C. 发明人 WENTWORTH, STEVEN, W.
分类号 F16L55/18;F16L1/028;F16L1/06;F16L55/165 主分类号 F16L55/18
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