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    Earth Boring Drill Bits Made From A Low-Carbon, High-Molybdenum Alloy
    1.
    发明申请
    Earth Boring Drill Bits Made From A Low-Carbon, High-Molybdenum Alloy 有权
    低碳，高钼合金地球钻孔钻头

    公开(公告)号：US20090008154A1

    公开(公告)日：2009-01-08

    申请号：US12166954

    申请日：2008-07-02

    申请人： Carmel Z. El Hakam ,  Eric Sullivan ,  John F. Bradford, III ,  Don Q. Nguyen

    发明人： Carmel Z. El Hakam ,  Eric Sullivan ,  John F. Bradford, III ,  Don Q. Nguyen

    IPC分类号： E21B10/00 ,  C22C1/10

    CPC分类号： C22C38/04 ,  C21D9/22 ,  C22C38/02 ,  C22C38/06 ,  C22C38/44

    摘要： An earth boring bit formed from an alloy comprising a low carbon content and high molybdenum content is disclosed herein. The molybdenum content is greater than about 0.8% to about 1.15% by weight of the alloy. The carbon content may range up to about 0.16% by weight of the alloy. The alloy may further comprise alloy further comprises manganese, phosphorus, sulfur, silicon, nickel, chromium, copper, aluminum, vanadium, and calcium; with the balance being iron. The alloy experiences a relatively flattened hardenability curve and low martinsite formation.

    摘要翻译： 本文公开了由包含低碳含量和高钼含量的合金形成的钻孔钻头。 钼含量大于合金重量的约0.8％至约1.15％。 碳含量可以高达合金重量的约0.16％。 合金还可以包含锰，磷，硫，硅，镍，铬，铜，铝，钒和钙; 平衡是铁。 该合金经历相对扁平的淬透性曲线和低的马氏体组成。

    Bearing insert sleeve for roller cone bit
    5.
    发明授权
    Bearing insert sleeve for roller cone bit 有权
    滚子锥头轴承插入套筒

    公开(公告)号：US07387177B2

    公开(公告)日：2008-06-17

    申请号：US11582684

    申请日：2006-10-18

    申请人： Anton F. Zahradnik ,  Terry J. Koltermann ,  Don Q. Nguyen ,  Aaron J. Dick ,  Eric Sullivan ,  Scott Shiqiang Shu

    发明人： Anton F. Zahradnik ,  Terry J. Koltermann ,  Don Q. Nguyen ,  Aaron J. Dick ,  Eric Sullivan ,  Scott Shiqiang Shu

    IPC分类号： E21B10/22

    CPC分类号： E21B10/22 ,  E21B10/25

    摘要： An earth boring bit has a bearing pin with a sleeve mounted on it. The sleeve is fixed against rotation but able to float relative to the bearing pin. A cone fits over and forms a bearing surface with the sleeve. The sleeve and bearing pin are configured to have a clearance between them that has a forward portion that progressively decreases in a rearward direction. The clearance progressively decreases in a forward direction from the rearward end of the sleeve. The cone and the sleeve are able to tilt in unison with each other relative to the bearing pin when the bit is loaded.

    摘要翻译： 地镗头具有安装在其上的套筒的轴承销。 套筒固定不能旋转，但能相对于轴承销浮动。 锥体装配并与套筒形成支承​​面。 套筒和支承销构造成在它们之间具有间隙，其具有在向后方向上逐渐减小的前部。 间隙从套筒的后端沿向前方向逐渐减小。 当钻头加载时，锥体和套筒能够相对于轴承销彼此一致倾斜。