公开(公告)号：US10100582B2

公开(公告)日：2018-10-16

申请号：US14806157

申请日：2015-07-22

申请人： Dover BMCS Acquisition Corporation

发明人： E. Sean Cox

IPC分类号： E21B10/60 ,  B23P15/32 ,  E21B10/55 ,  B23P15/28 ,  E21B10/567 ,  E21B10/54

摘要： A method for manufacturing a roof-bolt drill bit includes providing a bit body rotatable about a rotational axis, the bit body having at least two cutting element support structures, each of the at least two cutting element support structures including a mounting surface for mounting a cutting element to the bit body and a trailing support surface. The method includes forming an internal passage within the bit body, the internal passage extending from a rearward opening defined in the rearward end of the bit body through at least a portion of the bit body, and forming a fluid port within each of the at least two cutting element support structures, each fluid port extending from the internal passage to a port opening defined in the corresponding cutting element support structure, each port opening being positioned adjacent to the mounting surface of the corresponding cutting element support structure.

公开(公告)号：US09975210B1

公开(公告)日：2018-05-22

申请号：US14740737

申请日：2015-06-16

申请人： Dover BMCS Acquisition Corporation

发明人： E. Sean Cox ,  Russell Roy Myers

IPC分类号： E21B10/55 ,  B23P15/32 ,  B23C3/00 ,  E21B10/54

CPC分类号： B23P15/32 ,  B23C3/00 ,  B23C2220/56 ,  E21B10/54 ,  E21B10/55 ,  E21B10/60 ,  E21B10/602 ,  E21B2010/545

摘要： A method for manufacturing a roof-bolt drill bit includes providing a bit body rotatable about a rotational axis in a rotational direction, the rotational axis extending between a forward end and a rearward end of the bit body, the bit body comprising a mounting region for mounting at least one cutting element to the bit body. The method includes forming at least one primary debris channel in the bit body, the at least one primary debris channel extending from adjacent the mounting region to a portion of the bit body located axially rearward from the mounting region, and forming at least one secondary debris channel in the bit body by machining a portion of the bit body along a substantially straight path to form an intersection with the primary debris channel.

公开(公告)号：US20140262534A1

公开(公告)日：2014-09-18

申请号：US13840702

申请日：2013-03-15

申请人： Dover BMCS Acquisition Corporation

发明人： E. Sean Cox ,  Nathan Andrew Tulett

IPC分类号： E21B10/26

CPC分类号： E21B10/26 ,  E21B10/43 ,  E21B10/46 ,  E21B10/54 ,  E21B10/58 ,  E21B10/60

摘要： A subterranean support-bolt drilling assembly has a drill bit rotatable about a central axis and including at least one cutting edge. The drilling assembly also includes a spacer coupled to a rearward end of the drill bit. A reamer member is coupled to a rearward end of the spacer, the reamer member having at least one cutting element, the at least one cutting element having a cutting edge that extends radially beyond an outer peripheral portion of the drill bit relative to the central axis. A subterranean support-bolt drill bit includes a bit body and at least one cutting element coupled to the bit body. The support-bolt drill bit has a central pilot extending from the bit body in an axially forward direction. The cutting edge of the at least one cutting element extends radially beyond the central pilot relative to a central axis of the drill bit.

摘要翻译： 地下支撑螺栓钻井组件具有可围绕中心轴线旋转并且包括至少一个切削刃的钻头。 钻孔组件还包括联接到钻头的后端的间隔件。 铰刀构件联接到间隔件的后端，所述铰刀构件具有至少一个切割元件，所述至少一个切割元件具有切割边缘，所述切割边缘径向延伸超过所述钻头的外周部分相对于所述中心轴线 。 地下支撑螺栓钻头包括钻头体和联接到钻头体的至少一个切割元件。 支撑螺栓钻头具有沿轴向向前方向从钻头体延伸的中心导向件。 所述至少一个切割元件的切割边缘相对于所述钻头的中心轴线径向延伸超过所述中心引导件。

公开(公告)号：US09415447B2

公开(公告)日：2016-08-16

申请号：US14536559

申请日：2014-11-07

申请人： Dover BMCS Acquisition Corporation

发明人： Russell Roy Myers

IPC分类号： B24D3/06 ,  B23B41/00 ,  E21B10/58 ,  E21D20/00

CPC分类号： B23B41/00 ,  B24D3/06 ,  E21B10/58 ,  E21D20/00

摘要： A roof-bolt drill bit may have a forward end, a rearward end, and a rotational axis extending between the forward end and the rearward end. A cutting element for the roof-bolt drill bit may include a cutting face and a peripheral surface extending around an outer periphery of the cutting face. The cutting element may include at least one chamfer region and a peripherally extending chamfer extending from the at least one chamfer region along the outer periphery of the cutting element, a width of the at least one chamfer region being greater than a width of the peripherally extending chamfer.

摘要翻译： 屋顶螺栓钻头可以具有前端，后端和在前端和后端之间延伸的旋转轴线。 用于屋顶螺栓钻头的切割元件可以包括切割面和围绕切割面的外周延伸的周边表面。 切割元件可以包括至少一个倒角区域和沿着切割元件的外周边从至少一个倒角区域延伸的周向延伸的倒角，所述至少一个倒角区域的宽度大于外围延伸的宽度 倒角

公开(公告)号：US08807249B2

公开(公告)日：2014-08-19

申请号：US14038657

申请日：2013-09-26

申请人： Dover BMCS Acquisition Corporation

发明人： Russell Roy Myers ,  E. Sean Cox

IPC分类号： E21B10/567 ,  E21B10/573

CPC分类号： E21B10/573 ,  E21B10/55 ,  E21B10/56 ,  E21B10/58 ,  E21B10/633 ,  E21B2010/545 ,  E21B2010/624 ,  E21D20/00

摘要： A roof-bolt drill bit has a bit body that is rotatable about a central axis, a coupling pocket defined in the bit body, and at least one cutting element mounted to the bit body, the at least one cutting element having a non-cylindrical periphery. The at least one cutting element includes a cutting face, a cutting edge adjacent the cutting face, a back surface opposite the cutting face, and a side surface extending between the cutting edge and the back surface, at least a portion of the side surface of the at least one cutting element being bonded to a side surface of the coupling pocket. The roof-bolt drill bit includes a coupling projection extending from the at least one cutting element, the coupling projection being bonded to a coupling recess defined in the bit body.

摘要翻译： 屋顶螺栓钻头具有可围绕中心轴线旋转的钻头体，限定在钻头体中的联接凹槽以及安装到钻头体上的至少一个切割元件，所述至少一个切割元件具有非圆柱形 周边。 所述至少一个切割元件包括切割面，与切割面相邻的切割边缘，与切割面相对的后表面以及在切割边缘和背面之间延伸的侧表面，至少一部分侧切面 所述至少一个切割元件被结合到所述联接凹槽的侧表面。 所述屋顶螺栓钻头包括从所述至少一个切割元件延伸的联接突起，所述联接突起被结合到限定在所述钻头体中的联接凹槽。

公开(公告)号：US20130075166A1

公开(公告)日：2013-03-28

申请号：US13678105

申请日：2012-11-15

申请人： Dover BMCS Acquisition Corporation

发明人： E. Sean Cox

IPC分类号： E21B10/60 ,  E21B10/54 ,  E21B10/42

CPC分类号： E21B10/55 ,  B23P15/28 ,  E21B10/54 ,  E21B10/5673 ,  E21B10/602

摘要： A roof-bolt drill bit. The roof-bolt drill bit may include a bit body rotatable about a central axis and a cutting element coupled to the bit body. The bit body may comprise a forward end, a rearward end axially spaced away from the forward end, and an internal passage defined within the bit body, with the internal passage extending from a rearward opening defined in the rearward end of the bit body through at least a portion of the bit body. A fluid port is configured to direct fluid from the internal passage through a port opening in a direction that forms an angle with respect to a forward direction of the central axis.

摘要翻译： 屋顶螺栓钻头。 屋顶螺栓钻头可以包括可围绕中心轴线旋转的钻头体和联接到钻头体的切割元件。 钻头体可以包括前端，远离前端轴向间隔开的后端，以及限定在钻头体内的内部通道，内部通道从位于钻头体后端的后开口延伸穿过 钻头体的至少一部分。 流体端口构造成在相对于中心轴线的向前方向形成角度的方向上引导来自内部通道的流体通过端口开口。

公开(公告)号：US20180155989A1

公开(公告)日：2018-06-07

申请号：US15878391

申请日：2018-01-23

申请人： Dover BMCS Acquisition Corporation

发明人： E. Sean Cox

IPC分类号： E21B10/43 ,  E21B10/573 ,  E21B10/55 ,  E21B10/567

CPC分类号： E21B10/43 ,  E21B10/55 ,  E21B10/5673 ,  E21B10/573

摘要： A method for manufacturing a roof-bolt drill bit may include forming at least one coupling pocket in a bit body by (1) forming a pocket back surface, (2) forming a first pocket side surface including a substantially planar surface extending from the pocket back surface, and (3) forming a second pocket side surface including a substantially planar surface extending from the pocket back surface, the second pocket side surface being nonparallel to the first pocket side surface. The at least one coupling pocket may be defined by the pocket back surface, the first pocket side surface, and the second pocket side surface. The first pocket side surface may extend at an angle of between approximately 45° and approximately 90° relative to the second pocket side surface, and the first pocket side surface and the second pocket side surface may be separated from one another.

公开(公告)号：US20170159368A1

公开(公告)日：2017-06-08

申请号：US15434898

申请日：2017-02-16

申请人： Dover BMCS Acquisition Corporation

发明人： Russell Roy Myers ,  E. Sean Cox

IPC分类号： E21B10/573 ,  E21B10/55 ,  E21B10/633

CPC分类号： E21B10/573 ,  E21B10/55 ,  E21B10/56 ,  E21B10/58 ,  E21B10/62 ,  E21B10/633 ,  E21B2010/545 ,  E21B2010/624 ,  E21D20/00

摘要： A roof-bolt drill bit includes a bit body that is rotatable about a central axis, a coupling pocket defined in the bit body, and at least one cutting element mounted to the bit body. The at least one cutting element includes a cutting face, a cutting edge adjacent the cutting face, a back surface opposite the cutting face, and a side surface extending between the cutting edge and the back surface. The roof-bolt drill bit additionally includes a coupling attachment coupled to the bit body, the coupling attachment being positioned adjacent to a portion of the side surface of the cutting element that abuts a side surface of the coupling pocket.

公开(公告)号：US09598910B2

公开(公告)日：2017-03-21

申请号：US14341730

申请日：2014-07-25

申请人： Dover BMCS Acquisition Corporation

发明人： Russell Roy Myers ,  E. Sean Cox

IPC分类号： E21B10/633 ,  E21B10/58 ,  E21D20/00 ,  E21B10/56

CPC分类号： E21B10/573 ,  E21B10/55 ,  E21B10/56 ,  E21B10/58 ,  E21B10/633 ,  E21B2010/545 ,  E21B2010/624 ,  E21D20/00

摘要： A roof-bolt drill bit includes a bit body that is rotatable about a central axis, a coupling pocket defined in the bit body, and at least one cutting element mounted to the bit body. The at least one cutting element includes a cutting face, a cutting edge adjacent the cutting face, a back surface opposite the cutting face, and a side surface extending between the cutting edge and the back surface. The roof-bolt drill bit additionally includes a coupling attachment coupled to the bit body, the coupling attachment being positioned adjacent to a portion of the side surface of the cutting element that abuts a side surface of the coupling pocket.

公开(公告)号：US09371701B2

公开(公告)日：2016-06-21

申请号：US14055873

申请日：2013-10-16

申请人： Dover BMCS Acquisition Corporation

发明人： E. Sean Cox ,  Russell Roy Myers

IPC分类号： E21B10/54 ,  E21B10/567 ,  E21B10/60

CPC分类号： E21B10/602 ,  E21B10/5673

摘要： A roof-bolt drill bit includes a bit body rotatable about a central axis and at least one cutting element coupled to the bit body. The bit body has a forward end, a rearward end axially opposite the forward end, and an internal passage defined within the bit body, with the internal passage extending from a rearward opening defined in the rearward end of the bit body through at least a portion of the bit body. The at least one cutting element includes a cutting face, a cutting edge adjacent the cutting face, and a back surface spaced away from the cutting face, the back surface being mounted to the bit body. An opening defined in the bit body is positioned adjacent to the back surface of the at least one cutting element.

摘要翻译： 屋顶螺栓钻头包括可围绕中心轴线旋转的钻头体和连接到钻头体的至少一个切割元件。 钻头本体具有前端，与前端轴向相对的后端，以及限定在钻头体内的内部通道，内部通道从位于钻头体后端的后开口延伸穿过至少一部分 的身体。 所述至少一个切割元件包括切割面，与所述切割面相邻的切割刃以及与所述切割面间隔开的后表面，所述后表面安装到所述钻头体。 定位在钻头体中的开口定位成与所述至少一个切削元件的后表面相邻。