| 摘要 |
PCT No. PCT/GB95/00110 Sec. 371 Date Jul. 27, 1998 Sec. 102(e) Date Jul. 27, 1998 PCT Filed Jan. 20, 1995 PCT Pub. No. WO95/20125 PCT Pub. Date Jul. 27, 1995The lining of lateral pipelines is effected from the service end by inserting a resin impregnated lining tube into the lateral using a push rod. The leading end of the push rod is attached to the liner by a relaeasble device so that once the liner is in place, and the rod pulled back, the liner detaches and remains in the lateral. The liner is held in folded state by straps which are broken as the rod is pulled back in that a rope attached to the leading end of the rod is trapped under the straps and breaks them one by one as the rod is retracted. |
