发明名称 |
PACKER CUPS |
摘要 |
A packer cup for use in sealing the interior of a pipe under pressure is described. The cup uses a bell-shaped end which has a lip of softer material which is integral with the body of the cup which is harder material. Under pressure the lip expands against the sid e of the pipe and as pressure increases the body of the bell also expands against the pipe.</SDOA B>
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申请公布号 |
CA2490295(A1) |
申请公布日期 |
2005.06.17 |
申请号 |
CA20042490295 |
申请日期 |
2004.12.15 |
申请人 |
ASSOCIATED RESEARCH DEVELOPMENTS LTD. |
发明人 |
PLOMP, ALBERT E. |
分类号 |
E21B33/126;E21B47/10;(IPC1-7):F16J15/46;E21B33/12;E21B37/10;F16J15/06;F16L55/10 |
主分类号 |
E21B33/126 |
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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