Rubber sleeve core barrel apparatus |
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| 申请号 | US6779760 | 申请日 | 1960-11-07 | 公开(公告)号 | US3092191A | 公开(公告)日 | 1963-06-04 |
| 申请人 | CHRISTENSEN DIAMOND PROD CO; | 发明人 | TAKESHI MORI; PETERS ROBERT I; AUSTIN BENJAMIN L; | ||||
| 摘要 | |||||||
| 权利要求 | 1. IN APPARATUS ADAPTED TO BE SECURED TO A TUBULAR DRILL STRING FOR PRODUCING AND RETRIEVING A CORE IN A BORE HOLE: A DRIVING STRUCTURE ADAPTED TO BE CONNECTED TO THE DRILL STRING AND TO A BIT FOR CUTTING A CORE IN THE BORE HOLE; AN INNER TUBULAR MEMBER WITHIN AND CONNECTED TO SAID STRUCTURE; AN ELASTIC SLEEVE ON THE EXTERIOR OF SAID TUBULAR MEMBER EXTENDING AROUND THE LOWER END OF SAID TUBULAR MEMBER AND ADAPTED TO MOVE UPWARDLY THEREINTO AROUND A CORE EXTENDING THEREWITHIN; PULLING MEANS IN SAID TUBULAR MEMBER CONNECTED TO SAID SLEEVE; AND MEANS SECURED TO SAID PULLING MEANS AND EXTENDING UPWARDLY THROUGH THE DRILL STRING TO THE TOP OF THE BORE HOLE FOR PREVENTING DOWNWARD MOVEMENT OF SAID PULLING MEANS IN THE BORE HOLE AS THE BIT CUTS THE CORE AND SAID DRIVING STRUCTURE AND INNER TUBULAR MEMBER MOVE DOWNWARDLY IN THE BORE HOLE. |
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| 说明书全文 | |||||||
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