公开(公告)号：US20050263327A1

公开(公告)日：2005-12-01

申请号：US10855552

申请日：2004-05-27

申请人： Matthew Meiners ,  Raul Lema ,  Jimmy Eason

发明人： Matthew Meiners ,  Raul Lema ,  Jimmy Eason

IPC分类号： E21B10/00 ,  E21B10/52

CPC分类号： E21B10/52

摘要： A tungsten carbide compact of an earth boring bit has a cutting tip that is generally chisel-shaped with substantially flat flanks converging to an elongated crest. One of the flanks is smaller and has a greater included angle relative to the axis of the compact than the other flank. Shoulders extend from opposite ends of the crest. One shoulder has a radius of curvature that is smaller than the other shoulder.

摘要翻译： 钻孔钻头的碳化钨压块具有通常凿形的切削刀片，基本上平坦的侧翼会聚到细长的顶部。 侧面中的一个较小，并且相对于紧凑件的轴线具有比另一侧面更大的夹角。 肩膀从顶部的两端延伸。 一个肩部具有小​​于另一个肩部的曲率半径。

公开(公告)号：US20060021800A1

公开(公告)日：2006-02-02

申请号：US10902222

申请日：2004-07-29

申请人： Christopher Beuershausen ,  Raul Lema ,  Ronald Hales ,  Don Nguyen ,  Gregory Ricks ,  Chih Lin ,  Terry Koltermann ,  Mark Morris ,  Chris McCarty ,  Ronald Jones ,  James Overstreet ,  Rudolf Otto Pessier

发明人： Christopher Beuershausen ,  Raul Lema ,  Ronald Hales ,  Don Nguyen ,  Gregory Ricks ,  Chih Lin ,  Terry Koltermann ,  Mark Morris ,  Chris McCarty ,  Ronald Jones ,  James Overstreet ,  Rudolf Otto Pessier

IPC分类号： E21B10/00 ,  E21B10/36

CPC分类号： E21B10/08

摘要： An earth-boring bit has a bit body that includes head sections, each having depending bit legs with a circumferentially extending outer surface, a leading side, and a trailing side. A bearing shaft depends inwardly from each of the bit legs for mounting a cutter. The bit includes a beveled surface formed at a junction of the leading side and the outer surface of each bit leg. The beveled surface is angled relative to a radial plane emenating from the axis of the bit. The angle of the beveled surface is at least 20 degrees, and extends to an inner surface of the bit leg. The bit can also have a layer of hardfacing on the leading, trailing and shirttail surfaces of the bit leg. A diversion finger of hardfacing extends circumferentially to direct cuttings.

摘要翻译： 钻头具有包括头部部分的头部部件，每个头部部分具有具有周向延伸的外表面，前导侧和后侧的依附的位腿。 轴承轴从每个钻头腿向内取向，用于安装切割器。 该钻头包括形成在每个钻头腿的前侧和外表面的接合处的斜面。 倾斜表面相对于从钻头的轴线发出的径向平面成角度。 斜面的角度至少为20度，并且延伸到钻头的内表面。 该位还可以在位腿的前导，尾部和衬衫表面上具有一层硬面。 硬面的转向手指周向延伸以直接切割。

公开(公告)号：US20060283638A1

公开(公告)日：2006-12-21

申请号：US11511119

申请日：2006-08-28

申请人： Christopher Beuershausen ,  Raul Lema ,  Ronald Hales ,  Don Nguyen ,  Gregory Ricks ,  Chih Lin ,  Terry Koltermann ,  Mark Morris ,  Chris McCarty ,  Ronald Jones ,  James Overstreet ,  Rudolf Pessier

发明人： Christopher Beuershausen ,  Raul Lema ,  Ronald Hales ,  Don Nguyen ,  Gregory Ricks ,  Chih Lin ,  Terry Koltermann ,  Mark Morris ,  Chris McCarty ,  Ronald Jones ,  James Overstreet ,  Rudolf Pessier

IPC分类号： E21B10/08

CPC分类号： E21B10/08

摘要： An earth-boring bit has a bit body that includes head sections, each having depending bit legs with a circumferentially extending outer surface, a leading side, and a trailing side. A bearing shaft depends inwardly from each of the bit legs for mounting a cutter. The bit includes a beveled surface formed at a junction of the leading side and the outer surface of each bit leg. The beveled surface is angled relative to a radial plane emenating from the axis of the bit. The angle of the beveled surface is at least 20 degrees, and extends to an inner surface of the bit leg. The bit can also have a layer of hardfacing on the leading, trailing and shirttail surfaces of the bit leg. A diversion finger of hardfacing extends circumferentially to direct cuttings.