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    Expanded coverage carbide compact
    2.
    发明授权
    Expanded coverage carbide compact 有权
    膨胀覆盖碳化物压实

    公开(公告)号：US07011169B2

    公开(公告)日：2006-03-14

    申请号：US10704782

    申请日：2003-11-10

    申请人： Jimmy Wayne Eason

    发明人： Jimmy Wayne Eason

    IPC分类号： E21B10/16

    CPC分类号： E21B10/52

    摘要： A drill bit with rolling cone cutters for drilling a borehole in an earthen formation. The bit has a bit body, at least one leg depending from the bit body, a rolling cone rotatably mounted on the leg, the cone having a plurality of adjacent rows of cutters thereupon, at least one hole formed within the cone, the hole having a cylindrical wall, and a cutting element partially disposed within the hole, the cutting element having a cylindrical base which fits within the cylindrical wall of said hole, a shoulder which extends outward from the base of the cutting element, and an exposed cutting end extending from the shoulder, the cutting end being substantially symmetrical about a longitudinal axis of the cutting element.

    摘要翻译： 具有滚动锥形切割机的钻头，用于在土层中钻孔。 所述钻头具有一个位体，至少一个从所述钻头本体延伸的支脚，可旋转地安装在所述腿上的滚动锥体，所述锥体具有多个相邻的切割器列，所述至少一个孔形成在所述锥体内，所述孔具有 圆柱形壁和部分地设置在孔内的切割元件，切割元件具有装配在所述孔的圆柱形壁内的圆柱形基部，从切割元件的基部向外延伸的肩部，以及暴露的切割端， 从肩部开始，切割端基本上关于切割元件的纵向轴线对称。