| 发明名称 |
Method and means for processing oil sands while excavating |
| 摘要 |
The present invention is directed to the separation of bitumen, such as by the Clark process or by a countercurrent de-sander, in an underground excavation machine, such as a tunnel boring machine.
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| 申请公布号 |
US7461901(B2) |
申请公布日期 |
2008.12.09 |
| 申请号 |
US20060558335 |
申请日期 |
2006.11.09 |
| 申请人 |
OSUM OIL SANDS CORP. |
发明人 |
DRAKE RONALD D.;KOBLER MICHAEL HELMUT;WATSON JOHN DAVID |
| 分类号 |
E21C41/24;E02F7/00;E21B1/00;E21D9/08;E21D9/12;E21D9/13 |
主分类号 |
E21C41/24 |
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