发明名称 |
Swab cup reinforcing member support |
摘要 |
A well swab cup has an annular bushing for supporting a plurality of longitudinally extending reinforcing members within an elastomeric cup like body. The reinforcing members are supported around the periphery of the bushing and extend upward to a mid-portion of the body. A reinforcing member position support assembly is located above the bushing within the body to locate and position the reinforcing members in a spaced relation to each other around the swab cup.
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申请公布号 |
US4265459(A) |
申请公布日期 |
1981.05.05 |
申请号 |
US19790036970 |
申请日期 |
1979.05.08 |
申请人 |
DRESSER INDUSTRIES, INC. |
发明人 |
GREENLEE, DONALD R.;HYDE, BILL J. |
分类号 |
E21B37/10;(IPC1-7):F16J15/56;F16J9/00 |
主分类号 |
E21B37/10 |
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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