发明名称 |
Joint for drill rod sections |
摘要 |
The joint for drill rod sections has an outer sleeve end (1) and an inner insert end (2) connected together. The sleeve inner shoulder (3) engages the insert end face (10) through 90 percent of the extension limit of the connecting faces when pressed together. Excess pressure loads are fed through the end face (4) of the sleeve.
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申请公布号 |
DE19827821(C1) |
申请公布日期 |
1999.11.25 |
申请号 |
DE19981027821 |
申请日期 |
1998.06.17 |
申请人 |
MANNESMANN AG |
发明人 |
KRUG, GERHARD;QUADFLIEG, ERICH |
分类号 |
E21B17/042;F16L15/00;F16L15/04;(IPC1-7):E21B17/042;F16L21/00 |
主分类号 |
E21B17/042 |
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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