| 发明名称 |
Coring Bit With Uncoupled Sleeve |
| 摘要 |
A coring bit, including an outer hollow coring shaft, and a rotationally uncoupled internal sleeve disposed inside the outer hollow coring shaft. The rotationally uncoupled internal sleeve may be a non-rotating internal sleeve. The rotationally uncoupled internal sleeve may be a free-floating internal sleeve.
|
| 申请公布号 |
US2004140126(A1) |
申请公布日期 |
2004.07.22 |
| 申请号 |
US20030248475 |
申请日期 |
2003.01.22 |
| 申请人 |
HILL BUNKER M.;CONTRERAS GARY W.;HARRIGAN EDWARD;SUNDQUIST ROBERT WAYNE;REID LENNOX E.;LAUPPE DEAN W.;TRAN SONY |
发明人 |
HILL BUNKER M.;CONTRERAS GARY W.;HARRIGAN EDWARD;SUNDQUIST ROBERT WAYNE;REID LENNOX E.;LAUPPE DEAN W.;TRAN SONY |
| 分类号 |
E21B10/02;E21B49/06;(IPC1-7):E21B7/26 |
主分类号 |
E21B10/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
