发明名称 |
PROCESS AND DEVICE FOR REPLACING AN UNDERGROUND PIPE |
摘要 |
In order to replace a first underground pipe such as a metal pipe by a second pipe of mean diameter substantially equal to or greater than that of the first pipe, the first pipe is cut longitudinally by a localized projection of a flow of matter, particles or radiation thanks to a localized projection means which are displaced inside the first pipe in order to divide the first pipe longitudinally into at least two segments. Cutting by localized projection avoids in particular the creation of vibrations during fragmentation of the pipe to be replaced.
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申请公布号 |
US5207533(A) |
申请公布日期 |
1993.05.04 |
申请号 |
US19910645207 |
申请日期 |
1991.01.24 |
申请人 |
GAZ DE FRANCE |
发明人 |
FEDERSPIEL, ERIC;GODEFROY, RICHARD |
分类号 |
E03B7/00;E21B7/30;E21B43/114;F16L1/024;F16L55/165 |
主分类号 |
E03B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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