发明授权
- 专利标题： PCD face seal for earth-boring bit
- 专利标题（中）： PCD面密封用于钻孔钻头
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申请号： US09982899申请日： 2001-10-18
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公开(公告)号： US06684966B2公开(公告)日： 2004-02-03
- 发明人: Chih Lin , Terry Koltermann , Danny E. Scott
- 申请人： Chih Lin , Terry Koltermann , Danny E. Scott
- 主分类号： E21B1022
- IPC分类号： E21B1022
摘要：
An earth-boring bit has a mechanical face seal assembly with PCD faces. The bit has a bearing shaft with a cone rotatably mounted on the bearing shaft. The seal locates between the bearing shaft and the cone for sealing lubricant therein. The seal includes at least one rigid seal ring having a carbide body and an annular PCD face located on it. The mating face may also be of a PCD material.
公开/授权文献
- US20030075363A1 PCD face seal for earth-boring bit 公开/授权日：2003-04-24
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