发明名称 Segmented bottom guide for string elevator assembly
摘要 The present invention is directed to a segmented bottom guide for directing the top of a tubular member into and through a bore in the bottom of a tapered bowl so that the tubular member can be engaged by pipe slips. One embodiment of the segmented bottom guide of the present invention comprises a bottom guide retainer having a plurality of chambers for being disposed intermediate the top of a bell guide and the bottom of the tapered bowl. The bottom guide segments are radially received into, and securable in, the retainer to therein and together form a generally conical frustum generally aligned with and intermediate the top of the bell guide and the opening of the tapered bowl.
申请公布号 US7997333(B2) 申请公布日期 2011.08.16
申请号 US20070846169 申请日期 2007.08.28
申请人 FRANK'S CASTING CREW AND RENTAL TOOLS, INC. 发明人 ANGELLE JEREMY R.;MOSING DONALD E.
分类号 E21B19/07;E21B19/24 主分类号 E21B19/07
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