发明名称 |
PIPE BLOCKING TECHNIQUE |
摘要 |
A method for blocking the bore of a pipe comprising moving an inflatable bag along the bore of the pipe from an access point in the pipe to a point where the bore is to be blocked, inflating the bag until it engages the internal wall of the pipe or main, and causing the bag to maintain its inflated condition.
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申请公布号 |
CA2149109(C) |
申请公布日期 |
2001.09.04 |
申请号 |
CA19952149109 |
申请日期 |
1995.05.10 |
申请人 |
BRITISH GAS PLC |
发明人 |
SALES, BRIAN THOMAS;ELGAR, ANTHONY DENNIS;BENNETT, ROBERT NEAL |
分类号 |
F16L55/12;E03B7/09;E03F7/02;F16L55/134;(IPC1-7):F16L55/132 |
主分类号 |
F16L55/12 |
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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