发明申请
- 专利标题： Composite Metallic Elastomeric Sealing Components for Roller Cone Drill Bits
- 专利标题（中）： 复合金属弹性密封件用于滚子钻头
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申请号： US12699175申请日： 2010-02-03
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公开(公告)号： US20110187058A1公开(公告)日： 2011-08-04
- 发明人: David A. Curry , Terry J. Koltermann , Chih C. Lin , Stuart Hall
- 申请人： David A. Curry , Terry J. Koltermann , Chih C. Lin , Stuart Hall
- 申请人地址： US TX Houston
- 专利权人： Baker Hughes Incorporated
- 当前专利权人： Baker Hughes Incorporated
- 当前专利权人地址： US TX Houston
- 主分类号： E21B10/25
- IPC分类号： E21B10/25
摘要：
An earth boring bit has a bit body with a depending bearing pin, a cone rotatably mounted on the bearing pin, a seal gland between the cone and the bearing pin, and a seal assembly located in the seal gland. The seal assembly includes an annular metallic spring encircling the bearing pin. The spring has a geometric center line that extends in a circle around the bearing pin. The spring is elastically deformable in radial directions relative to the center line. An elastomeric layer is located on an exterior side of the spring and is biased by the spring against a surface of the seal gland.
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