发明名称 CLAM IN DEVICE FOR SUS ENDIN A DRILL STRIN OR CASIN STRIN FROM A DRILL FLOOR.
摘要 <p>Clamping die (15) in a device for engagement with a cylindrical body (4), which clamping die (15) includes a gripping surface (153) that is arranged to be able to extend in parallel with the centre axis of the cylindrical body (4), wherein a groove (154) is provided in each of two side surfaces (151) adjacent to the gripping surface (153) and in close proximity to the gripping surface (153), said groove (154) extending substantially in parallel with the gripping surface (153).</p>
申请公布号 MX2010007870(A) 申请公布日期 2011.02.23
申请号 MX20100007870 申请日期 2009.01.16
申请人 TTS SENSE AS 发明人 PER A. VATNE
分类号 E21B19/10;E21B19/02 主分类号 E21B19/10
代理机构 代理人
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