发明名称 |
SLIP GRIPPING MECHANISM |
摘要 |
A slip gripping mechanism is shown for supporting a string of cylindrical conduit within the interior bore of a circumscribing conduit. An elongate body has a plurality of spaced longitudinal slots at one end. Vertically shiftable slips are carried in the slots by side edges which engage mating profiles formed in the slots. The slots form guideways for the slips for shifting the slips upwardly and outwardly relative to the body between a set position engaging the circumscribing conduit and an unset position. Each slip has an arcuate lower surface and a selected width to thickness ratio to allow controlled flexing of the slip in the direction of the circumscribing conduit as the slip moves to the set position. |
申请公布号 |
CA1285474(C) |
申请公布日期 |
1991.07.02 |
申请号 |
CA19870528812 |
申请日期 |
1987.02.03 |
申请人 |
HUGHES TOOL COMPANY |
发明人 |
BAUGH, JOHN L.;FOSTER, JOE D. |
分类号 |
E21B23/01;E21B23/04;F16D1/02 |
主分类号 |
E21B23/01 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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