发明申请
- 专利标题: Rotary Drilling Rig Split Bushing
- 专利标题(中): 旋转钻机分体衬套
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申请号: US13287335申请日: 2011-11-02
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公开(公告)号: US20130105226A1公开(公告)日: 2013-05-02
- 发明人: Les Banta , Tim Coil , Daniel Webb , Suljo Haskic
- 申请人: Les Banta , Tim Coil , Daniel Webb , Suljo Haskic
- 申请人地址: US OK Oklahoma City
- 专利权人: ELASTECH TECHNOLOGIES, LLC
- 当前专利权人: ELASTECH TECHNOLOGIES, LLC
- 当前专利权人地址: US OK Oklahoma City
- 主分类号: E21B19/24
- IPC分类号: E21B19/24
摘要:
A bushing of the type used to limit wobble in drill pipe, the improvement comprising a bushing defined by two halves, each half having two ends adapted to buttingly engage corresponding ends of the other, and each further defining a receiver section along one of its ends; a flexible hinge piece matingly joined to the receiver sections with the opposite ends of the halves remaining free to move relative to one another, whereby the halves are rotatably affixed together at one end, but the opposite ends remain free to open. The bushing may be comprised of a first polymeric material, and the hinge piece comprised of a second, more flexible, polymeric material. Each half of the bushing may have mounted thereto a handle projecting upwardly.
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