发明名称 |
DRILL BIT CUTTING ARRAY HAVING DISCONTINUITIES THEREIN |
摘要 |
The present invention comprises a cutting structure for earth boring drill bits and a bit including at least one such structure comprising a substantially planar array of cutting elements arranged in substantially contiguous mutual proximity, the array incorporating at least one discontinuity therein dividing it into a plurality of sub-arrays.
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申请公布号 |
CA2037480(A1) |
申请公布日期 |
1991.09.07 |
申请号 |
CA19912037480 |
申请日期 |
1991.03.04 |
申请人 |
NORTON COMPANY |
发明人 |
CHOW, JACOB;HORTON, RALPH M.;JONES, MARK L. |
分类号 |
E21B10/48;E21B10/54;(IPC1-7):E21B10/00 |
主分类号 |
E21B10/48 |
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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