Sediment sample retriever |
|||||||
| 申请号 | US3707196D | 申请日 | 1971-07-13 | 公开(公告)号 | US3707196A | 公开(公告)日 | 1972-12-26 |
| 申请人 | US ARMY; | 发明人 | VERVILLE WILLIAM P; | ||||
| 摘要 | A subaqueous sediment sample retriever head is affixed to the lower end of a continuous casing, which is positioned about a drill rod string and lowered onto a sampler tube, contiguous with the drill rod string. The retriever head houses in oppositely disposed cavities to a central bore, a pair of spools which store and actuate a flexible sealing slide respectively, and two pairs of spring actuated locking lugs which actuate simultaneously with the slide when the retriever head reaches the sampler tube bottom. A sleeve like follower device guides the retriever head onto the sampler tube and retains the sealing mechanism in an open position during mounting. The retriever head is advanced over the sampler by its own weight in conjunction with hydraulic jetting action. | ||||||
| 权利要求 | 1. A sediment sample retriever assembly comprising in combination: a. a drill rod string and attached sampler tube; b. a casing and attached retriever head adapted to be positioned about said drill rod string and lowered onto said sampler tube; c. drilling means for advancing said retriever head in a downward direction about said sampler tube; and d. a flexible slide, with housing and actuating means, for sealing off a lower, open end of said sampler tube. 2. A sediment sampler retriever assembly according to claim 1 wherein said assembly further comprises a plurality of locking lugs, with actuating means, for supporting said flexible slide. 3. A sediment sample retriever assembly according to claim 2 wherein said assembly further comprises a follower device, adapted to guide said retriever head about said drill rod string and onto said sampler tube, wherein said follower device further includes means for retaining said locking lugs and flexible slide in open, nonactuated positions. 4. A sediment sample retriever assembly according to claim 3 wherein said sampler tube is of greater diameter than said drill rod string forming a shoulder on said sampler tube at the function of said drill rod string and said sampler tube providing a stop for said follower whereby further travel of said retriever head beyond said juncture disengages said locking lugs from said follower, said locking lugs being maintained in an open, nonactuated condition by said sampler tube for the balance of travel of said retriever head on said sampler tube and being actuated to support said flexible slide upon completion of travel beyond said sampler tube. 5. A sediment sample retriever assembly according to claim 1 wherein said drilling means comprises hydraulic jetting from an overhead pumping station which passes through a plurality of waterways located in said retriever head. 6. A sediment sample retriever head comprising in combination: a. a central bore; b. an upper section which houses a flexible slide, with actuating means, adapted to move between an open position and a closed, actuated position wherein said bore can be effectively sealed; c. a lower section which houses a plurality of locking lugs, with actuating means, adapted to move between an open position and a closed, actuated position, thereby providing support for said flexible slide. 7. A sediment sample retriever head according to claim 6 wherein said upper section of said retriever head includes a plurality of waterways emanating from the central bore and extending to an outer periphery of said upper section. 8. A sediment sample retriever head according to claim 6 wherein said upper section includes a pair of spool assemblies housed in chambers oppositely disposed to the central bore, a first spool serving as a storage spool about which said flexible slide is stored, and a second actuating spool, communicating with said slide, which when actuated draws the slide across said bore, thereby sealing said bore. 9. A sediment sample retriever head according to claim 8 wherein said lower section includes two pairs of oppositely disposed, spring actuated locking lugs, housed in dimensioned cavities, oppositely disposed to said central bore. 10. A sediment sample retriever head according to claim 9 wherein said flexible slide and locking lugs are retained in an open position by a cylindrical sleeve like follower, the outside diameter of which is slightly less than that of said central bore. |
||||||
| 说明书全文 | |||||||
QQ群二维码
意见反馈
意见反馈