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公开(公告)号：US4605079A
公开(公告)日：1986-08-12
申请号：US746804
申请日：1985-06-20
申请人： Donald L. Leibee , Owen K. Crist
发明人： Donald L. Leibee , Owen K. Crist
IPC分类号： E21B10/38 , E21B10/58 , E21B17/046 , E21B10/36
CPC分类号： E21B17/046 , E21B10/38 , E21B10/58
摘要： A drill bit for use in combination with a through-the-steel drill stem, the drill bit including an elongated body portion having a bore through which cuttings may be removed through the drill stem, a web for receiving a drill tip, and a sleeve attached about the body portion thereof, the web thereof having axially extending faces coutoured from the periphery of the body portion toward the axis thereof, and the sleeve extending from the body portion and in spaced apart axial relation to the contoured faces of the web in a manner to define drill cut receiving ports opening upwardly to the drill tip and downwardly to the bore of the body portion. The drill bit may be provided with a male keeper or retainer to mate with a complementary female receptor of the drill stem for interconnection of the drill bit to the drill stem.
摘要翻译： 一种用于与通过钢钻杆组合使用的钻头，所述钻头包括细长主体部分，所述细长主体部分具有孔，所述孔可通过所述孔穿过所述钻孔，所述钻头可以通过所述钻孔被移除，用于接收钻头的腹板和套筒 围绕其主体部分附接，其腹板具有从主体部分的周边朝向其轴线轴向延伸的表面，并且套筒从主体部分延伸并且以相互间隔开的轴向关系到卷材的轮廓面 方式来限定朝向钻头顶端向上开口并向下延伸到主体部分的孔的钻头接收端口。 该钻头可以设置有一个公接头或保持器，以与钻杆的互补的母接头配合，用于将钻头与钻杆相互连接。
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公开(公告)号：US3960222A
公开(公告)日：1976-06-01
申请号：US501803
申请日：1974-08-29
CPC分类号： E21B10/32 , E21B10/327 , E21D20/02
摘要： A tool for being inserted in a hole, especially a hole in an earth formation, and adapted for being rotated in the hole. A cutting element moveably mounted on the tool is provided for cutting a groove in the hole and, if the tool is moved axially in the hole while rotating, a helical groove will result. The cutting element is retractable to permit removal of the tool from the hole. The hole with the groove formed therein is adapted for receiving a roof bolt or the like which is cemented in place and the aforementioned groove improves the strength with which the bolt is held in the hole.
摘要翻译： 一种用于插入孔中的工具，特别是地层中的孔，并适于在孔中旋转。 提供可移动地安装在工具上的切割元件用于切割孔中的凹槽，并且如果工具在旋转的同时在孔中轴向移动，将产生螺旋槽。 切割元件可缩回以允许工具从孔中移除。 其中形成有凹槽的孔适于接收胶合到位的屋顶螺栓等，并且上述槽改善了将螺栓保持在孔中的强度。
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公开(公告)号：US4711312A
公开(公告)日：1987-12-08
申请号：US888302
申请日：1986-07-22
申请人： Donald L. Leibee , Owen K. Crist
发明人： Donald L. Leibee , Owen K. Crist
摘要： A drill bit for use in combination with a through-the-steel drill stem, the drill bit including an elongated body portion having a bore through which cuttings may be removed, a web extending transversely across the bore for receiving a drill tip, and drill ports leading from the drill tip to the bore and from the periphery of the body portion to the bore, the drill ports comprising opposed axially extending openings contoured as a hemisphere to define opposed axially extending faces of the web and opening to the bore from the drill tip and extending axially along the body portion and opening from the periphery thereof to the bore below the web. The drill bit may be provided with a sleeve to delimit the drill ports.
摘要翻译： 一种用于与通过钢钻杆组合使用的钻头，所述钻头包括细长主体部分，所述细长主体部分具有可以移除切屑的孔，跨所述孔横向延伸的用于接收钻头的腹板和钻头 从钻头引导到钻孔并从主体部分的周边引导到孔的钻孔，钻孔包括相对的轴向延伸的开口，其形状为半球，以限定腹板的相对的轴向延伸的面并且从钻孔开孔 尖端并且沿着主体部分轴向延伸并且从其周边开口到幅材下方的孔。 钻头可以设置有套筒以限定钻孔。
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公开(公告)号：US4371210A
公开(公告)日：1983-02-01
申请号：US269553
申请日：1981-06-02
申请人： Donald L. Leibee
发明人： Donald L. Leibee
摘要： Disclosed herein is a new method and improved apparatus for digging and mining earth formations, especially coal formations. A mining or excavating machine having a movable frame with a drive means mounted on the frame is provided with a rotatable structural member and a rotatable cutter support having cutter bits mounted thereon. The structural member is rotatably mounted on the frame and connected to the drive means so as to be driven in one direction of rotation about a longitudinal axis of the structural member. The rotatable cutter support assembly with the cutter bits mounted thereon is rotatably mounted on the structural member and is freely rotatable about its longitudinal axis. The mining machine is then positioned so that the cutter bits will reduce the mineral formation by driving the structural member in one direction of rotation about its longitudinal axis. Engagement of the mineral formation with the cutter bits then causes the freely rotatable cutter support to rotate about its longitudinal axis in a direction that is reverse to that of the power driven structural member. This method of mining mineral formations, especially coal, allows the type cutter bits commonly used to penetrate and fracture the mineral formations without undue and unnecessary frictional engagement, eliminating unnecessary dust and sparks.A new type cutter bit is also disclosed herein for use with the apparatus.
摘要翻译： 本文公开了一种用于挖掘和开采地层，特别是煤层的新方法和改进的装置。 具有可移动框架的采矿或挖掘机具有安装在框架上的驱动装置，其具有可旋转的结构构件和可旋转的刀具支架，其上安装有切割钻头。 结构构件可旋转地安装在框架上并连接到驱动装置，以便围绕结构构件的纵向轴线在一个旋转方向上被驱动。 具有安装在其上的切割刀头的可旋转刀具支撑组件可旋转地安装在结构构件上并且可绕其纵向轴线自由旋转。 然后，采矿机定位成使得切削刀头通过围绕其纵向轴线沿一个旋转方向驱动结构构件来减少矿物形成。 矿物形成与切割钻头的啮合然后使可自由旋转的切割器支撑件沿其纵向轴线在与动力驱动结构构件的方向相反的方向上旋转。 这种挖掘矿物地层，特别是煤的方法允许通常使用的切割刀头穿透和破碎矿物地层，而不会过度和不必要的摩擦接合，消除不必要的灰尘和火花。 本文还公开了一种与该装置一起使用的新型切割刀头。
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