Device for obtaining earth samples |
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| 申请号 | US3716107D | 申请日 | 1971-03-10 | 公开(公告)号 | US3716107A | 公开(公告)日 | 1973-02-13 |
| 申请人 | ERAP; | 发明人 | LIAUTAUD J; | ||||
| 摘要 | TO BE CLOSED WHEN SAID TUBE IS WITHDRAWN FROM THE EARTH BROKEN LOOSE FROM SAID OUTER CASING. DEVICE FOR OBTAINING EARTH SAMPLED COMPRISES AN INNER TUBE HAVING CUTTING MEANS AT ITS FORWARD END AND ADAPTED TO BE DRIVEN INTO THE EARTH, FINGERS WITHIN THE TUBE FOR DETACHING A CORE THEREWITHIN WHEN THE TUBE IS PULLED UP, AN OUTER CASING FRANGIBLY ATTRACHED TO THE INNER TUBE, PASSAGEWAYS BETWEEN THE TUBE AND CASING FOR RECEIVING WATER AND, IN A PREFERRED EMBODIMENT, VALVE MEANS FOR CONTROLING THE ADMISSION OF WATER TO SAID PASSAGEWAYS ADAPTED |
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| 权利要求 | |||||||
| 说明书全文 | |||||||
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