发明授权
- 专利标题： Low projection inserts for rock bits
- 专利标题（中）： 岩石钻头的低投影插入
-
申请号： US11204063申请日： 2005-08-15
-
公开(公告)号： US07600590B2公开(公告)日： 2009-10-13
- 发明人: Floyd C. Felderhoff , Brian A. Baker , Rudolf C. Pessier , Jimmy W. Eason
- 申请人： Floyd C. Felderhoff , Brian A. Baker , Rudolf C. Pessier , Jimmy W. Eason
- 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
- 代理机构： Bracewell & Giuliani LLP
- 主分类号： E21B10/16
- IPC分类号： E21B10/16
摘要：
An earth boring bit has an outer row of inserts located within extra deep holes. Each of the holes has a cylindrical sidewall with a depth greater than the length of the barrel of the insert mounted within. The difference in depth is at least equal to a distorted entry zone in the hole. A portion of the sidewall that includes the entry zone surrounds the cutting end, reducing the projection of the cutting end from the land.
公开/授权文献
- US20070034415A1 Low projection inserts for rock bits 公开/授权日：2007-02-15
信息查询
