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1. 再颁专利

USRE37127E1 Hardfacing composition for earth-boring bits 有权
标题翻译：用于钻孔钻头的表面硬化组合物
公开(公告)号：USRE37127E1
公开(公告)日：2001-04-10
申请号：US09137254
申请日：1998-08-19
申请人： Kevin W. Schader , James L. Overstreet , Alan J. Massey , Ronald L. Jones , Danny E. Scott
发明人： Kevin W. Schader , James L. Overstreet , Alan J. Massey , Ronald L. Jones , Danny E. Scott
IPC分类号： C22C2900
CPC分类号： C22C1/051 , B22F1/0003 , B22F1/0096 , B22F9/04 , B22F2999/00 , B23K35/327 , C22C29/08 , C22C33/02 , C23C4/10 , C23C30/005 , E21B10/50 , C22C29/06 , B22F1/0048 , B22F3/10 , B22F9/082
摘要： A hardfacing composition comprises at least 60% by weight of hard metal granules including a quantity of sintered carbide pellets and a quantity of cast carbide pellets. The cast and sintered carbides are selected from the group of carbides consisting of chromium, molybdenum, niobium, tantalum, titanium, tungsten, and vanadium carbides and alloys and mixtures thereof. The balance of the hardfacing composition is matrix metal with traces of flux or deoxidizer, and alloying elements. All percentages given are pre-application ratios.
摘要翻译：表面硬化组合物包含至少60重量％的硬质金属颗粒，其包括一定数量的烧结碳化物颗粒和一定数量的碳化物颗粒。铸态和烧结碳化物选自由铬，钼，铌，钽，钛，钨和碳化钒组成的碳化物和合金及其混合物。耐磨组合物的平衡是具有助焊剂或脱氧剂痕量的基质金属和合金元素。所有给出的百分比是应用前比例。

2. 发明授权

US5663512A Hardfacing composition for earth-boring bits 失效
标题翻译：用于钻孔钻头的表面硬化组合物
公开(公告)号：US5663512A
公开(公告)日：1997-09-02
申请号：US343005
申请日：1994-11-21
申请人： Kevin W. Schader , Ronald L. Jones , James L. Overstreet , Danny E. Scott , Mou-Chih Lu , Alan J. Massey
发明人： Kevin W. Schader , Ronald L. Jones , James L. Overstreet , Danny E. Scott , Mou-Chih Lu , Alan J. Massey
IPC分类号： B22F1/00 , B23K35/32 , C22C1/05 , C23C4/10 , C23C30/00 , E21B10/50 , C22C29/00
CPC分类号： C22C1/051 , B22F1/0003 , B23K35/327 , C23C30/005 , C23C4/10 , E21B10/50 , B22F2999/00
摘要： A hardfacing composition comprises at least 60% by weight of hard metal granules including a quantity of sintered carbide pellets and a quantity of cast carbide pellets. The cast and sintered carbides are selected from the group of carbides consisting of chromium, molybdenum, niobium, tantalum, titanium, tungsten, and vanadium carbides and alloys and mixtures thereof. The balance of the hardfacing composition is matrix metal with traces of flux or deoxidizer, and alloying elements. All percentages given are pre-application ratios.
摘要翻译：表面硬化组合物包含至少60重量％的硬质金属颗粒，其包括一定数量的烧结碳化物颗粒和一定数量的碳化物颗粒。铸态和烧结碳化物选自由铬，钼，铌，钽，钛，钨和碳化钒组成的碳化物和合金及其混合物。耐磨组合物的平衡是具有助焊剂或脱氧剂痕量的基质金属和合金元素。所有给出的百分比是应用前比例。

3. 发明授权

US06253862B1 Earth-boring bit with cutter spear point hardfacing 有权
标题翻译：钻头钻头用刀尖硬化
公开(公告)号：US06253862B1
公开(公告)日：2001-07-03
申请号：US09245702
申请日：1999-02-03
申请人： James L. Overstreet , Ronald L. Jones , Alan J. Massey , Trevor M. McAninch , Jeremy K. Morgan
发明人： James L. Overstreet , Ronald L. Jones , Alan J. Massey , Trevor M. McAninch , Jeremy K. Morgan
IPC分类号： E21B1000
CPC分类号： E21B10/16 , B23K35/327 , E21B10/50
摘要： An earth-boring bit has rolling cutters, each attached to a bit leg depending from a bit body. Each of the cutters has hardfaced, milled teeth. A spear point is located on one of the cutters. The spear point has a neck that protrudes toward the axis of the bit from a conical portion of the cutter. Blades are located on the spear point with spaces located between the blades. A layer of hardfacing is applied to the entire spear point area including the blades, the spaces and the neck.
摘要翻译：一个镗孔钻头有滚刀，每个都有一个靠着一点点身体的一个小腿。每个切割机具有硬面，磨齿。矛点位于其中一个刀具上。矛尖具有从切割器的锥形部分朝向钻头轴线突出的颈部。叶片位于矛尖之间，空间位于叶片之间。一层硬面施加到包括叶片，空间和颈部的整个矛点区域。

4. 发明授权

US06360832B1 Hardfacing with multiple grade layers 有权
标题翻译：多层次的表面硬化
公开(公告)号：US06360832B1
公开(公告)日：2002-03-26
申请号：US09477029
申请日：2000-01-03
申请人： James L. Overstreet , Ronald L. Jones , Alan J. Massey , Mary K. Adams
发明人： James L. Overstreet , Ronald L. Jones , Alan J. Massey , Mary K. Adams
IPC分类号： E21B1008
CPC分类号： E21B10/50 , C23C30/005
摘要： An earth-boring bit has hardfacing that has multiple grades and an overlapped portion. One of the layers is of a different grade than the other so as to provide more wear resistance. The other provides more toughness than the wear resistant layer. The more wear resistant layer has a greater volumetric density of carbide particles. The greater density is primarily achieved by using a majority of the particles of smaller dimension than in the less wear resistant hardfacing. The overlapped portion may be on an outer or gage end of the outer row of teeth.
摘要翻译：一个钻孔钻头具有多个等级和重叠部分的硬面。其中一层与另一层不同，以提供更多的耐磨性。另一方面比耐磨层提供更多的韧性。耐磨层越多，碳化物颗粒的体积密度越大。较大的密度主要通过使用尺寸较小的大多数颗粒比较少的耐磨硬化面来实现。重叠部分可以在外排齿的外侧或者规定端上。

5. 发明授权

US5492186A Steel tooth bit with a bi-metallic gage hardfacing 失效
标题翻译：钢齿钻头采用双金属表面硬化
公开(公告)号：US5492186A
公开(公告)日：1996-02-20
申请号：US316665
申请日：1994-09-30
申请人： James L. Overstreet , Ronald L. Jones , Alan J. Massey
发明人： James L. Overstreet , Ronald L. Jones , Alan J. Massey
IPC分类号： B23K35/32 , E21B10/50
CPC分类号： E21B10/50 , B23K35/327
摘要： An earth boring bit rotatable cutter having a first hardfacing composition of carbide particles selected from the class of cast and macrocrystalline tungsten carbide dispersed in a steel matrix deposited on the gage surface of at least some of the heel row teeth. A substantial portion of these particles are characterized by a high level of abrasion resistance and a lower level of fracture resistance. A second hardfacing composition of carbide particles selected from the class of spherical sintered and spherical cast tungsten is dispersed in a steel matrix deposited over at least the crest and an upper portion of the gage surface to cover the corner that tends to round during drilling. A substantial portion of the particles of this composition are characterized by a high level of fracture resistance and a lower level of abrasion resistance.
摘要翻译：一种地钻钻头可旋转刀具，其具有选自分散在沉积在至少一些后跟排齿的表面上的钢基体中的铸造和微晶碳化钨类的碳化物颗粒的第一硬化组合物。这些颗粒的主要部分的特征在于高耐磨性和较低的耐断裂水平。选自球形烧结和球形铸造钨类的碳化物颗粒的第二表面硬化组合物分散在至少沉积在表面的顶部和表面上部的钢基体中，以覆盖在钻孔期间倾向于圆形的拐角。该组合物的大部分颗粒的特征在于高水平的耐断裂性和较低的耐磨性。

6. 发明授权

US07823664B2 Corrosion protection for head section of earth boring bit 有权
标题翻译：镗孔头部防腐蚀
公开(公告)号：US07823664B2
公开(公告)日：2010-11-02
申请号：US12191915
申请日：2008-08-14
申请人： Alan J. Massey , David K. Luce , Eric Sullivan , John F. Bradford, III , Carmel Z. El Hakam , James L. Overstreet , Ajay V. Kulkarni
发明人： Alan J. Massey , David K. Luce , Eric Sullivan , John F. Bradford, III , Carmel Z. El Hakam , James L. Overstreet , Ajay V. Kulkarni
IPC分类号： E21B10/46
CPC分类号： E21B10/46 , C23C30/005 , E21B10/08
摘要： An earth boring bit has a steel body having at least one leg with a depending bearing pin. A cone having cutting elements is rotatably mounted to the bearing pin. A ball plug weld is on the outer surface of the leg. A layer of hardfacing applied to part of the outer surface of the leg, the hardfacing having carbide particles in a matrix. A corrosion resistant coating containing at least 50% nickel is formed on parts of the outer surface of the leg that are free of the layer of hardfacing both above and below the ball plug weld.
摘要翻译：地镗头具有至少一个具有从动轴承销的支脚的钢体。具有切割元件的锥体可旋转地安装在轴承销上。球塞的外表面上有一个球塞。一层表面硬化施加到腿的外表面的一部分，表面硬化具有碳化物颗粒在基质中。在腿部外表面的没有球塞焊缝上方和下方的耐磨层层的部分上形成含有至少50％镍的耐腐蚀涂层。

7. 发明申请

US20090044984A1 Corrosion Protection for Head Section of Earth Boring Bit 有权
标题翻译：镗孔头部防腐蚀
公开(公告)号：US20090044984A1
公开(公告)日：2009-02-19
申请号：US12191915
申请日：2008-08-14
申请人： Alan J. Massey , David K. Luce , Eric Sullivan , John F. Bradford, III , Carmel Z. El Hakam , James L. Overstreet , Ajay V. Kulkarni
发明人： Alan J. Massey , David K. Luce , Eric Sullivan , John F. Bradford, III , Carmel Z. El Hakam , James L. Overstreet , Ajay V. Kulkarni
IPC分类号： E21B10/62
CPC分类号： E21B10/46 , C23C30/005 , E21B10/08
摘要： An earth boring bit has a steel body having at least one leg with a depending bearing pin. A cone having cutting elements is rotatably mounted to the bearing pin. A ball plug weld is on the outer surface of the leg. A layer of hardfacing applied to part of the outer surface of the leg, the hardfacing having carbide particles in a matrix. A corrosion resistant coating containing at least 50% nickel is formed on parts of the outer surface of the leg that are free of the layer of hardfacing both above and below the ball plug weld.
摘要翻译：地镗头具有至少一个具有从动轴承销的支脚的钢体。具有切割元件的锥体可旋转地安装在轴承销上。球塞的外表面上有一个球塞。一层表面硬化施加到腿的外表面的一部分，表面硬化具有碳化物颗粒在基质中。在腿部外表面的没有球塞焊缝上方和下方的耐磨层层的部分上形成含有至少50％镍的耐腐蚀涂层。

8. 发明授权

US06923276B2 Streamlined mill-toothed cone for earth boring bit 有权
标题翻译：流线型磨齿锥钻头
公开(公告)号：US06923276B2
公开(公告)日：2005-08-02
申请号：US10369000
申请日：2003-02-19
申请人： James L. Overstreet , Rudolf Carl Otto Pessier , Alan J. Massey , Jeremy K. Morgan
发明人： James L. Overstreet , Rudolf Carl Otto Pessier , Alan J. Massey , Jeremy K. Morgan
IPC分类号： E21B10/52 , E21B10/16
CPC分类号： E21B10/52
摘要： An earth-boring bit has a bit body, at least one cantilevered bearing shaft depending inwardly and downwardly from the bit body, and a cutter mounted for rotation on the bearing shaft. The cutter includes a plurality of teeth that are covered with a hardfacing layer. At least some of the teeth have a leading side that has a streamlined contour. The streamlined contour is generally conical in some of the embodiments. In others, the streamlined contour is defined by a corner between diverging inner and outer sections of the leading side.
摘要翻译：钻头具有一个位体，至少一个从钻头体向内和向下悬伸的悬臂轴承轴，以及安装成用于在轴承轴上旋转的切割器。切割器包括被表面堆积层覆盖的多个齿。至少一些牙齿具有具有流线型轮廓的前方。在一些实施例中，流线型轮廓通常是圆锥形的。在其他方面，流线型的轮廓由前方的内部和外部分段之间的角度限定。

9. 发明授权

US06248149B1 Hardfacing composition for earth-boring bits using macrocrystalline tungsten carbide and spherical cast carbide 有权
标题翻译：用于使用微晶碳化钨和球形碳化钨的钻孔钻头的表面硬化组合物
公开(公告)号：US06248149B1
公开(公告)日：2001-06-19
申请号：US09309323
申请日：1999-05-11
申请人： Alan J. Massey , James L. Overstreet
发明人： Alan J. Massey , James L. Overstreet
IPC分类号： C22C2902
CPC分类号： C22C1/051 , B22F2005/001 , B23K35/327 , C22C29/08 , C23C30/005
摘要： A hardfacing composition for an earth-boring bit has a quantity macrocrystalline tungsten carbide particles and a quantity of spherical cast tungsten carbide pellets. The particles and pellets are contained within a metal matrix which forms the balance of the composition.
摘要翻译：用于钻头的硬化组合物具有量的微晶碳化钨颗粒和一定量的球形铸造碳化钨颗粒。颗粒和颗粒包含在形成组合物余量的金属基质内。

10. 发明授权

US06450271B1 Surface modifications for rotary drill bits 有权
标题翻译：旋转钻头的表面修饰
公开(公告)号：US06450271B1
公开(公告)日：2002-09-17
申请号：US09621064
申请日：2000-07-21
申请人： Gordon A. Tibbitts , Danny E. Scott , James L. Overstreet , Terry J. Kolterman , Chih Lin , James Andy Oxford , Steven R. Radford
发明人： Gordon A. Tibbitts , Danny E. Scott , James L. Overstreet , Terry J. Kolterman , Chih Lin , James Andy Oxford , Steven R. Radford
IPC分类号： E21B1000
CPC分类号： E21B10/567 , E21B10/52 , E21B2010/566
摘要： A rotary-type drill bit for drilling subterranean formations having areas or components having surfaces exhibiting a relatively low adhesion, preferably nonwater-wettable, surface over at least a portion thereof.
摘要翻译：一种用于钻探地下地层的旋转式钻头，其具有在其至少一部分上具有相对较低粘附性，优选非水可润湿表面的表面的区域或部件。

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