| 发明名称 |
Rolling cutter drill bit |
| 摘要 |
A rolling cutter drill bit is disclosed which utilizes a main body having a threaded end for connection in a drill string, and a plurality of rolling cutter assemblies joined to the bottom of the bit body by means such as electron beam welding.
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| 申请公布号 |
US4158973(A) |
申请公布日期 |
1979.06.26 |
| 申请号 |
US19780886983 |
申请日期 |
1978.03.15 |
| 申请人 |
REED TOOL CO. |
发明人 |
HOLLINGSHEAD, FRANK A;MINTON, JAMES A JR;SCHUMACHER, PERCY W JR |
| 分类号 |
B23P15/28;E21B10/20;(IPC1-7):B21K5/02 |
主分类号 |
B23P15/28 |
| 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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