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 US2006099035(A1) 申请公布日期 2006.05.11
申请号 US20050117655 申请日期 2005.04.28
申请人 WENTWORTH STEVEN W 发明人 WENTWORTH STEVEN W.
分类号 F16L55/18;F16L7/00 主分类号 F16L55/18
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