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1. 发明授权

US08205692B2 Rock bit and inserts with a chisel crest having a broadened region 有权
标题翻译：岩石钻头和插入物，具有加宽区域的凿子顶部
公开(公告)号：US08205692B2
公开(公告)日：2012-06-26
申请号：US11858359
申请日：2007-09-20
申请人： Scott D. McDonough , Brandon M. Moss , James C. Minikus
发明人： Scott D. McDonough , Brandon M. Moss , James C. Minikus
IPC分类号： E21B10/16 , E21B10/08
CPC分类号： E21B10/50 , E21B10/16 , E21B10/52
摘要： A drill bit for cutting a borehole comprises a bit body. In addition, the drill bit comprises a rolling cone cutter mounted on the bit body and adapted for rotation about a cone axis. Further, the drill bit comprises at least one insert having a base portion secured in the rolling cone cutter and a cutting portion extending therefrom. The cutting portion includes a pair of flanking surfaces that taper towards one another to form an elongate chisel crest including a first crest end, a second crest end, and an apex positioned therebetween. A transverse radius of curvature at the first crest end is less than a transverse radius of curvature at the apex, and a transverse radius of curvature at the second crest end is less than the transverse radius of curvature at the apex.
摘要翻译：用于切割钻孔的钻头包括钻头体。此外，钻头包括安装在钻头体上并适于围绕锥体轴线旋转的滚动锥切割器。此外，钻头包括至少一个插入件，其具有固定在滚动锥形切割器中的基部和从其延伸的切割部。切割部分包括一对相对于彼此成锥形的侧面表面，以形成细长的凿孔，其包括第一顶端，第二顶端和位于其间的顶点。在第一顶端处的横向曲率半径小于顶点处的横向曲率半径，并且在第二顶端处的横向曲率半径小于顶点处的横向曲率半径。

2. 发明申请

US20080156543A1 Rock Bit and Inserts With a Chisel Crest Having a Broadened Region 有权
标题翻译：岩石钻头和插入与凿子有扩大的地区
公开(公告)号：US20080156543A1
公开(公告)日：2008-07-03
申请号：US11858359
申请日：2007-09-20
申请人： Scott D. McDonough , Brandon M. Moss , James C. Minikus
发明人： Scott D. McDonough , Brandon M. Moss , James C. Minikus
IPC分类号： E21B10/16 , E21B10/08
CPC分类号： E21B10/50 , E21B10/16 , E21B10/52
摘要： A drill bit for cutting a borehole comprises a bit body. In addition, the drill bit comprises a rolling cone cutter mounted on the bit body and adapted for rotation about a cone axis. Further, the drill bit comprises at least one insert having a base portion secured in the rolling cone cutter and a cutting portion extending therefrom. The cutting portion includes a pair of flanking surfaces that taper towards one another to form an elongate chisel crest including a first crest end, a second crest end, and an apex positioned therebetween. A transverse radius of curvature at the first crest end is less than a transverse radius of curvature at the apex, and a transverse radius of curvature at the second crest end is less than the transverse radius of curvature at the apex.
摘要翻译：用于切割钻孔的钻头包括钻头体。此外，钻头包括安装在钻头体上并适于围绕锥体轴线旋转的滚动锥切割器。此外，钻头包括至少一个插入件，其具有固定在滚动锥形切割器中的基部和从其延伸的切割部。切割部分包括一对相对于彼此成锥形的侧面表面，以形成细长的凿孔，其包括第一顶端，第二顶端和位于其间的顶点。在第一顶端处的横向曲率半径小于顶点处的横向曲率半径，并且在第二顶端处的横向曲率半径小于顶点处的横向曲率半径。

3. 发明授权

US5839526A Rolling cone steel tooth bit with enhancements in cutter shape and placement 失效
标题翻译：滚珠锥齿钢刀头，刀具形状和配置增强
公开(公告)号：US5839526A
公开(公告)日：1998-11-24
申请号：US833418
申请日：1997-04-04
申请人： Dennis Cisneros , Scott D. McDonough , James C. Minikus , Chris E. Cawthorne
发明人： Dennis Cisneros , Scott D. McDonough , James C. Minikus , Chris E. Cawthorne
IPC分类号： E21B10/16 , E21B10/52
CPC分类号： E21B10/16 , E21B10/52
摘要： A steel tooth bit includes one or more rolling cone cutters having a generally conical surface, a heel surface, and preferably a transition surface therebetween. A row of gage cutter elements are secured to the cone cutter on the transition surface and have cutting surfaces that cut to full gage. A first inner row of off-gage steel teeth is positioned on the conical surface of the cone cutter so that the gage-facing cutting surfaces of the teeth are close to gage, but are preferably off-gage a distance D at a knee that is formed on the gage facing surface. Distance D is strategically selected such that the gage and off-gage cutter elements cooperatively cut the corner of the borehole. The lower most portion of the gage facing surface of these steel teeth are off gage a distance D' which is greater than D so as to bring the cutting tip of the teeth off gage to prevent undesired wear and rounding off of the tip of the cutter element. The upper most portion of the gage-facing surface is also preferably off gage a distance D" that is greater than D so as to optimize the surface area on the gage facing surface that is in contact with the borehole corner.
摘要翻译：钢齿钻头包括一个或多个具有大致圆锥形表面的滚动锥形切割器，后跟表面，并且优选地在其之间形成过渡表面。一排量具切割器元件固定在过渡表面上的锥形切割器上，并具有切割成满量程的切割表面。第一排内角钢齿的齿定位在锥形切割器的锥形表面上，使得齿的面向切口的表面接近规格，但优选在膝盖处为距离D，形成在面向表面的表面上。距离D有策略地选择，使得量规和离开切割元件协同地切割钻孔的角。这些钢齿的面向表面的最下面的部分是远离D的距离D'，以使得齿的切割尖端脱离规格，以防止不期望的磨损和切割刀尖的四舍五入元件。面向表面的表面的最大部分还优选地离开计量器，其距离D“大于D，以便优化与钻孔角接触的面向表面的表面上的表面积。

4. 发明授权

US5421424A Bowed out chisel insert for rock bits 失效
标题翻译：凿出钻头的凿子插入物
公开(公告)号：US5421424A
公开(公告)日：1995-06-06
申请号：US257592
申请日：1994-06-09
申请人： Gary Portwood , James C. Minikus , Scott D. McDonough , Michael A. Siracki
发明人： Gary Portwood , James C. Minikus , Scott D. McDonough , Michael A. Siracki
IPC分类号： E21B10/16 , E21B10/52
CPC分类号： E21B10/16 , E21B10/52
摘要： A chisel type insert is disclosed having a contoured surface in which the vertical lines located on the surface are bowed outwardly in a convex manner thereby eliminating blend radii from the cutting tip and the high stress concentrations associated therewith.
摘要翻译：公开了一种凿型插入件，其具有轮廓表面，其中位于表面上的垂直线以凸形的方式向外弯曲，从而消除了来自切割尖端的混合半径以及与其相关联的高应力集中。

5. 发明授权

US5868213A Steel tooth cutter element with gage facing knee 失效
标题翻译：钢齿切割元件与量具面对膝盖
公开(公告)号：US5868213A
公开(公告)日：1999-02-09
申请号：US833334
申请日：1997-04-04
申请人： Dennis Cisneros , Scott D. McDonough , James C. Minikus , Chris E. Cawthorne
发明人： Dennis Cisneros , Scott D. McDonough , James C. Minikus , Chris E. Cawthorne
IPC分类号： E21B10/16 , E21B10/50
CPC分类号： E21B10/50 , E21B10/16
摘要： A steel tooth, particularly suited for use in a rolling cone bit, includes a root region, a cutting tip spaced from the root region and a gage facing surface therebetween. The gage facing surface includes a knee, and is configured such that the cutting tip is maintained at a position off the gage curve. So positioned, the cutting tip is freed from having to perform any substantial cutting duty in the corner on the borehole corner, and instead may be configured and optimized for bottom hole cutting duty. The knee on the gage facing surface is configured and positioned so as to serve primarily to cut the borehole wall. It is preferred that the knee be positioned off gage, but that it be closer to the gage curve than the cutting tip.
摘要翻译：特别适用于滚动锥形钻头的钢齿包括根部区域，与根部区域间隔开的切割尖端以及与其之间的面向表面的表面。面向面的表面包括膝部，并且被构造成使得切割尖端保持在距离曲线曲线的位置。如此定位，切割尖端不需要在钻孔角落的角落执行任何实质的切割任务，而是可以配置和优化底孔切割任务。面向表面的表面上的膝盖被构造和定位，以便主要用于切割钻孔壁。优选的是，膝盖定位在规格上，但是它比切割尖端更接近计量曲线。

6. 发明授权

US06782959B2 Cutter element with non-linear, expanded crest 失效
标题翻译：切割元件具有非线性，扩展的顶点
公开(公告)号：US06782959B2
公开(公告)日：2004-08-31
申请号：US10436709
申请日：2003-05-13
申请人： James C. Minikus , Chris E. Cawthorne , Stephen C. Steinke , Gary R. Portwood , Gary E. Garcia , David P. Moran , Quan V. Nguyen
发明人： James C. Minikus , Chris E. Cawthorne , Stephen C. Steinke , Gary R. Portwood , Gary E. Garcia , David P. Moran , Quan V. Nguyen
IPC分类号： E21B1008
CPC分类号： E21B10/52 , B33Y80/00 , E21B10/16
摘要： A cutter element for a drill bit has a crest that defines a crest line. The crest can be non-rectilinear. The crest line of each cutter element defines an angle with respect to the axis of the rolling cone on which the cutter element is mounted. The cutter elements define different angles with respect to the cone axis and with respect to each other.
摘要翻译：用于钻头的切割元件具有限定顶部线的波峰。波峰可以是非直线的。每个切割器元件的顶部线相对于其上安装有切割器元件的滚动锥体的轴线形成一个角度。刀具元件相对于锥体轴线相对于彼此限定不同的角度。

7. 发明授权

US06029759A Hardfacing on steel tooth cutter element 失效
标题翻译：硬齿面钢刀切割元件
公开(公告)号：US06029759A
公开(公告)日：2000-02-29
申请号：US835135
申请日：1997-04-04
申请人： Jiinjen Albert Sue , James C. Minikus , Zhigang Fang
发明人： Jiinjen Albert Sue , James C. Minikus , Zhigang Fang
IPC分类号： E21B10/16 , E21B10/50 , E21B10/00
CPC分类号： E21B10/52 , E21B10/16
摘要： A steel tooth particularly suited for use in a rolling cone bit includes a parent metal core having an inner gage facing surface, leading and trailing edges, a root region adjacent to the cone and an outer most edge spaced from the root region. A hardfacing layer that includes at least two hardfacing materials having differing wear characteristics is disposed over the parent metal core in an asymmetric arrangement of regions of the first and second materials. A first of the hardfacing materials has a higher low stress abrasive wear resistance than that of the second material. The second material has a high stress abrasion resistance that is greater than the first material. The first and second materials are applied in generally contiguous regions over the entire gage facing surface of the parent metal core so as to optimize regions of the tooth for the particular cutting duty experience by that region.
摘要翻译：特别适用于滚动锥形钻头的钢牙齿包括具有内表面的表面的母金属芯，前缘和后缘，与锥体相邻的根部区域和与根部区域间隔开的最外边缘。在第一和第二材料的区域的不对称布置中，在母金属芯上设置包括具有不同磨损特性的至少两个表面硬化材料的表面层。第一种表面硬化材料比第二种材料具有更高的低应力磨损耐磨性。第二材料具有大于第一材料的高应力耐磨性。第一和第二材料被施加在母金属芯的整个面向表面的整个连续区域中，以便优化牙齿的区域，用于该区域的特定切割工作经验。

8. 发明授权

US5172779A Radial crest insert 失效
标题翻译：径向插入
公开(公告)号：US5172779A
公开(公告)日：1992-12-22
申请号：US798435
申请日：1991-11-26
申请人： Michael A. Siracki , Gary R. Portwood , Chris E. Cawthorne , James C. Minikus
发明人： Michael A. Siracki , Gary R. Portwood , Chris E. Cawthorne , James C. Minikus
IPC分类号： E21B10/52 , E21B10/56
CPC分类号： E21B10/56 , E21B10/52
摘要： A chisel insert for rolling cone rock bits is disclosed in which the crest of the insert has a "dog bone" shape by being rounded with the crest ends flaring out to a larger dimension than the middle thereof. The crest is also convex upwardly along its median line thereby making a shorter moment arm at the ends of the crest.
摘要翻译：公开了一种用于滚动锥形岩石钻头的凿子插入件，其中刀片的顶部具有“狗骨”形状，其圆顶部的顶端扩展到比其中间更大的尺寸。波峰也沿其中线向上凸起，从而在波峰的端部形成较短的力矩臂。

9. 发明申请

US20080245576A1 CUTTING ELEMENTS WITH INCREASED TOUGHNESS AND THERMAL FATIGUE RESISTANCE FOR DRILLING APPLICATIONS 有权
标题翻译：切削元件具有增加的韧性和耐热耐久性的钻孔应用
公开(公告)号：US20080245576A1
公开(公告)日：2008-10-09
申请号：US12059775
申请日：2008-03-31
申请人： Dah-Ben Liang , Gary R. Portwood , James C. Minikus , Amardeep Singh , Jonathan Bitler
发明人： Dah-Ben Liang , Gary R. Portwood , James C. Minikus , Amardeep Singh , Jonathan Bitler
IPC分类号： E21B10/08
CPC分类号： E21B10/52 , B22F2005/001 , C22C29/06 , C22C29/14 , C22C29/16 , E21B10/55
摘要： Cutting elements offering increased toughness and thermal fatigue resistance can be formed of a wear resistant material having coarse grains disposed in a binder matrix with a binder content of at least about 18% by weight. The coarse grains include grains of at least one selected from the group of a transition metal carbide, a transition metal boride, and transition metal nitride. The binder content and coarse grain size may be selected to provide a Rockwell A hardness of at least about 75 Ra or a wear number of at least about 1.5.
摘要翻译：具有提高韧性和耐热疲劳性的切割元件可以由具有粗颗粒的耐磨材料形成，所述耐磨材料具有设置在粘合剂基质中的粘合剂含量至少为约18重量％。粗晶粒包括选自过渡金属碳化物，过渡金属硼化物和过渡金属氮化物中的至少一种的晶粒。可以选择粘合剂含量和粗粒度以提供至少约75Ra的Rockwell A硬度或至少约1.5的磨损值。

10. 发明授权

US5172777A Inclined chisel inserts for rock bits 失效
标题翻译：用于岩石钻头的倾斜凿子
公开(公告)号：US5172777A
公开(公告)日：1992-12-22
申请号：US766882
申请日：1991-09-26
申请人： Michael A. Siracki , James C. Minikus
发明人： Michael A. Siracki , James C. Minikus
IPC分类号： E21B10/16 , E21B10/52 , E21B10/56
CPC分类号： E21B10/56 , E21B10/16 , E21B10/52
摘要： A chisel gage insert is disclosed having a larger nose radius at the outer end of the insert crest than at the inner end thereby providing more mass on the portion of the insert that contacts the borehole sidewall. The rounded crest also blends with the convex surfaces of the insert extension so as not to have any non-tangential intersections.
摘要翻译：公开了一种凿子量具插入件，其在插入件顶部的外端具有比内端更大的前端半径，从而在与钻孔侧壁接触的插入件的部分上提供更多的质量。圆形的凸起也与插入件延伸部的凸形表面共混，以便不具有任何非切向的交点。

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