发明名称 |
Vibration and erosion resistant nozzle |
摘要 |
An erosion and vibration resistant nozzle apparatus is disclosed for earth drilling rock bits. The nozzle includes a flow bean that is retained in a nozzle cavity by a threaded retainer, the retainer having at least one axially aligned slot therethrough to more fully engage the roots and crests of the retention threads to firmly secure the nozzle bean within its nozzle cavity. The split retainer may also have a conically shaped interior opening that conforms to a cone shaped exterior of the exit end of the nozzle bean for a more secure retention of the nozzle body within the nozzle cavity.
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申请公布号 |
US4711311(A) |
申请公布日期 |
1987.12.08 |
申请号 |
US19860933407 |
申请日期 |
1986.11.20 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
UNDERWOOD, LANCE D.;OLIVER, MICHAEL S. |
分类号 |
E21B10/18;E21B10/60;E21B10/61;E21B10/62;(IPC1-7):E21B10/18 |
主分类号 |
E21B10/18 |
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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