| 发明名称 |
DEVICE FOR USE IN THE ABANDONMENT OF A BRANCH MAIN |
| 摘要 |
A method for abandoning a branch main 1 joined to a fluid-carrying spine main 2 comprises gaining access to the bore of the branch main 1 at an access point and then permanently blocking the bore of the branch main 1 at a blockage point closer to the junction then to the access point. |
| 申请公布号 |
AU3385993(A) |
申请公布日期 |
1993.04.22 |
| 申请号 |
AU19930033859 |
申请日期 |
1993.02.26 |
| 申请人 |
BRITISH GAS PLC |
发明人 |
ANTHONY DENNIS ELGAR;BRIAN THOMAS SALES;ADRIAN SYDNEY PARKES |
| 分类号 |
E03B7/02;E03F3/04;F16L1/024;F16L55/10;F16L55/128;F16L55/16 |
主分类号 |
E03B7/02 |
| 代理机构 |
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代理人 |
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