发明名称 |
SHAPED INSERTS WITH INCREASED RETENTION FORCE |
摘要 |
A shaped insert that includes a top portion, and a grip length, wherein the grip length is modified to have a non-uniform cross sectional area is disclosed. In another case, a shaped insert includes a top portion, and a grip length, wherein the grip length is modified such that the insert is non-cylindrical. In another case, a shaped insert includes a top portion, and a grip length, wherein the grip length is coated in a non-uniform manner.
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申请公布号 |
CA2477673(C) |
申请公布日期 |
2008.03.25 |
申请号 |
CA20042477673 |
申请日期 |
2004.08.16 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
CAWTHORNE, CHRIS E.;GRIFFO, ANTHONY;RICHMAN, LANCE T.;VISWANADHAM, RAMAMURTHY |
分类号 |
E21B10/08;B21K5/02;B23P15/28;E21B10/16;E21B10/50 |
主分类号 |
E21B10/08 |
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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