发明授权
- 专利标题： Earth-boring bit with an advantageous cutting structure
- 专利标题（中）： 具有有利切割结构的钻孔钻头
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申请号： US949660申请日： 1992-09-23
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公开(公告)号： US5311958A公开(公告)日： 1994-05-17
- 发明人: Matthew R. Isbell , Rudolf C. O. Pessier
- 申请人： Matthew R. Isbell , Rudolf C. O. Pessier
- 申请人地址： TX Houston
- 专利权人： Baker Hughes Incorporated
- 当前专利权人： Baker Hughes Incorporated
- 当前专利权人地址： TX Houston
- 主分类号： E21B10/12
- IPC分类号： E21B10/12 ; E21B10/16 ; E21B10/14
摘要：
An earth-boring bit is provided with three cutters, two of the three cutters are provided with heel disk cutting elements defined by a pair of generally oppositely facing disk surfaces that generally continuously converge to define a circumferential heel disk crest. One of the two cutters having heel disk elements is further provided with an inner disk cutting element.
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