发明名称 |
Zeitlich begrenztes oder permanentes Absperren der Bohrung eines Rohres. |
摘要 |
<p>A method is provided for temporarily or permanently blocking the bore of a gas service pipe 5. In the method a resilient ball 6 is forced along the pipe 5 from the gas meter tap end of the pipe 5 by gas pressure, the ball 6 forming a force fit sufficient to resist any attempt to dislodge it by the pressure of gas in the pipe 5. The ball 6 is forced to a position where it is outside the gas consumer's premises 1.</p> |
申请公布号 |
DE3883656(T2) |
申请公布日期 |
1994.02.10 |
申请号 |
DE19883883656T |
申请日期 |
1988.07.13 |
申请人 |
BRITISH GAS PLC, LONDON, GB |
发明人 |
SMITH, PETER, WIRRAL MERSEYSIDE L49, GB |
分类号 |
F16L55/10;F16L55/11;(IPC1-7):F16L55/12 |
主分类号 |
F16L55/10 |
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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