再颁专利
- 专利标题： Composite seal for rotary cone rock bits
- 专利标题（中）： 旋转锥形岩石复合密封
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申请号： US649954申请日： 1996-07-08
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公开(公告)号： USRE36452E公开(公告)日： 1999-12-21
- 发明人: Robert G. Upton , Michael E. Hooper , Jerry Pyka , Robert Chambers , Gary Portwood , Randy Johnston
- 申请人： Robert G. Upton , Michael E. Hooper , Jerry Pyka , Robert Chambers , Gary Portwood , Randy Johnston
- 申请人地址： TX Houston
- 专利权人： Smith International, Inc.
- 当前专利权人： Smith International, Inc.
- 当前专利权人地址： TX Houston
- 主分类号： E21B10/22
- IPC分类号： E21B10/22 ; E21B10/25 ; F16C33/74 ; F16J15/54
摘要：
An elastomeric o-ring rock bit seal is disclosed with two or more integrally bonded elastomers or phenolic type materials joined together to form the seal. The dynamic sealing face adjacent the journal bearing is fabricated from an elastomer/phenolic engineered specifically for wear resistance The bulk of the seal adjacent the static seal retention cavity typically formed in the rotary cone is molded from an elastomer engineered specifically for precise control of the seal contact force adjacent the dynamic seal face when the seal is compressed against the dynamic face by the seal retention cavity in the cone.
公开/授权文献
- US5158456A Turbine air exhaust block 公开/授权日：1992-10-27