发明名称 |
Method and apparatus for launching pipeline clearing spheres |
摘要 |
Pipeline tool for closing an open end of a pipeline and which is suitable for use with a pipeline clearing sphere for clearing a pipeline has a tubular member for holding one or two spheres side by side and an aperture in the wall of the tubular member to release gas trapped therein and pipes for supplying compressed air to launch the spheres.
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申请公布号 |
US4050955(A) |
申请公布日期 |
1977.09.27 |
申请号 |
US19750564129 |
申请日期 |
1975.04.01 |
申请人 |
THE BRITISH PETROLEUM COMPANY LIMITED |
发明人 |
SOUTHGATE, DONALD ALAN |
分类号 |
B08B9/053;B08B9/057;F16L1/16;F16L55/10;F16L55/12;F16L55/132;F16L55/46;(IPC1-7):B08B9/04 |
主分类号 |
B08B9/053 |
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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