| 发明名称 |
STRESS RELIEF FEATURE ON PDC CUTTER |
| 摘要 |
A cutter having a base portion, an ultrahard layer disposed on the base portion, and at least one relief groove formed on an outer surface of the cutter. The at lea st one relief groove is configured to form a relief gap between the ultrahard layer and an inside surface of a cutter pocket.
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| 申请公布号 |
CA2541267(C) |
申请公布日期 |
2008.12.16 |
| 申请号 |
CA20062541267 |
申请日期 |
2006.03.29 |
| 申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
ZHANG, JOHN YOUHE;SHEN, YUELIN |
| 分类号 |
B23B51/00;B23C5/18;E21B10/08;E21B10/46 |
主分类号 |
B23B51/00 |
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