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    • 23. 发明授权
    • Retention for an insert
    • 保留插入
    • US07946657B2
    • 2011-05-24
    • US12169345
    • 2008-07-08
    • David R. HallScott Dahlgren
    • David R. HallScott Dahlgren
    • E21C35/197
    • E21B10/16E21B10/36E21B10/62E21C35/183E21C35/197E21C2035/1806
    • A degradation assembly for attachment to a driving mechanism used for degrading a formation. The degradation assembly includes both a cutting structure and a tensioning element adapted to connect the cutting structure to the driving mechanism. The tensioning element includes a body having a engaging structure adapted to engage with the cutting structure on a first end, a thread adapted to engage with the driving mechanism proximate a second end, a necked region between the engaging structure and the thread which is operable to break when acted upon by a predetermined tensile force, and a torque member extending from the engaging structure that engages with the cutting structure to transfer torque between the cutting structure and the body, and which torque member is operable to break when acted upon by a predetermined torque.
    • 用于附接到用于降级地层的驱动机构的降解组件。 降解组件包括切割结构和适于将切割结构连接到驱动机构的张紧元件。 张紧元件包括主体,该主体具有适于在第一端上与切割结构接合的接合结构,适于在靠近第二端与驱动机构接合的螺纹,接合结构和螺纹之间的颈缩区域,其可操作以 以及从接合结构延伸的转矩构件,其与切割结构接合以在切割结构和主体之间传递转矩,并且该扭矩构件可操作以在受到预定拉伸力的作用时断裂 扭矩。