| 发明名称 |
Sealing members |
| 摘要 |
A sealing member for insertion into a bore of a pipe comprising a flexible inflatable toroidal bag which when inflated expands radially outward to contact the bore of the pipe and expands radially inwards to obturate the pipe.
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| 申请公布号 |
US4160464(A) |
申请公布日期 |
1979.07.10 |
| 申请号 |
US19740529726 |
申请日期 |
1974.12.05 |
| 申请人 |
UNITED KINGDOM ATOMIC ENERGY AUTHORITY |
发明人 |
BALLINGER, HUGH A. |
| 分类号 |
F16K7/10;(IPC1-7):F16L55/12 |
主分类号 |
F16K7/10 |
| 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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