发明名称 |
Diamond bit steel body cutter pocket protection |
摘要 |
A drill bit that includes a steel bit body having at least one blade thereon, at least one cutter pocket disposed on the at least one blade; at least one cutter disposed in the at least one cutter pocket; at least one recess formed in at least a portion of the surface of the at least one cutter pocket, wherein the recess is adjacent a leading face of the at least one blade; and an erosion resistant material in the at least one recess is disclosed.
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申请公布号 |
US7644786(B2) |
申请公布日期 |
2010.01.12 |
申请号 |
US20060511881 |
申请日期 |
2006.08.29 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
LOCKSTEDT ALAN W.;OLDHAM THOMAS W. |
分类号 |
E21B10/55 |
主分类号 |
E21B10/55 |
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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