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21. 发明授权

US07730976B2 Impregnated rotary drag bit and related methods 有权
标题翻译：浸渍旋转阻力钻头及相关方法
公开(公告)号：US07730976B2
公开(公告)日：2010-06-08
申请号：US11932432
申请日：2007-10-31
申请人： Eric E. McClain , Marcus R. Skeem
发明人： Eric E. McClain , Marcus R. Skeem
IPC分类号： E21B10/43
CPC分类号： E21B10/54 , E21B10/16 , E21B10/43
摘要： A drill bit is provided that employs a plurality of discrete, post-like, abrasive, particulate-impregnated cutting structures extending upwardly from the bit face. The cutting structures may be disposed on abrasive, particulate-impregnated blades that also define a plurality of fluid passages on the bit face. One or more of the cutting structures may include outermost ends that exhibit a cross-sectional geometry that is elongated in a direction along a defined axis. The cutting structures may be oriented such that the defined axis is neither coplanar with, nor parallel to, an intended rotational path of the at least one discrete cutting structure during operation of the bit. In one embodiment, the cutting structure is oriented such that the defined axis is at an acute angle relative to a tangent of the intended rotational path for the associated cutting structure. Other or different features may include, for example, additional, differently configured cutting elements.
摘要翻译：提供了一种钻头，其采用从钻头面向上延伸的多个离散的，类似后，磨料的颗粒浸渍的切割结构。切割结构可以设置在研磨性颗粒浸渍的刀片上，刀片也在钻头面上限定多个流体通道。一个或多个切割结构可以包括表现出沿着限定的轴线的方向伸长的横截面几何形状的最外端。切割结构可以被定向成使得限定的轴既不与钻头的操作期间的至少一个离散切割结构的预期旋转路径共面，也不平行。在一个实施例中，切割结构被定向成使得限定的轴线相对于相关切割结构的预期旋转路径的切线成锐角。其他或不同的特征可以包括例如附加的不同构造的切割元件。

22. 发明授权

US06935940B2 Metal single layer abrasive cutting tool having a contoured cutting surface 失效
标题翻译：金属单层研磨切割工具具有轮廓切割表面
公开(公告)号：US06935940B2
公开(公告)日：2005-08-30
申请号：US10963292
申请日：2004-10-12
申请人： Marcus R. Skeem , Sergej-Tomislav Buljan , Jean Kramp
发明人： Marcus R. Skeem , Sergej-Tomislav Buljan , Jean Kramp
IPC分类号： B23D61/18 , B28D1/04 , B28D1/12 , B24D7/00
CPC分类号： B28D1/12 , B23D61/18 , B28D1/041
摘要： This invention relates to an abrasive cutting tool comprising: i) a substrate surface having a plurality of teeth extending therefrom, and ii) a single layer of abrasive grains chemically bonded to at least a portion of each tooth to define a plurality of cutting levels parallel to the substrate surface, the cutting levels comprising a first uppermost cutting level and a second uppermost cutting level, the grains having a predetermined concentration, size and toughness, whereby the abrasive cutting tool has a cutting surface with a negative angle of inclination with respect to an intended direction of cutting.
摘要翻译：本发明涉及一种研磨切削工具，其包括：i）具有从其延伸的多个齿的基底表面，以及ii）化学结合到每个牙齿的至少一部分上的单层磨料颗粒，以限定多个切割水平平行所述切割水平包括第一最高切割水平和第二最高切割水平，所述颗粒具有预定的浓度，尺寸和韧性，由此所述研磨切割工具具有相对于所述切割面具有负的倾斜角度的切割表面预期的切割方向。

23. 发明授权

US5832360A Bond for abrasive tool 失效
标题翻译：研磨工具粘合剂
公开(公告)号：US5832360A
公开(公告)日：1998-11-03
申请号：US920242
申请日：1997-08-28
申请人： Richard M. Andrews , Bradley J. Miller , Marcus R. Skeem , Ren-Kae Shiue
发明人： Richard M. Andrews , Bradley J. Miller , Marcus R. Skeem , Ren-Kae Shiue
IPC分类号： B24D3/00 , B23K35/30 , B24D3/06 , B24D3/08 , B24D3/34 , B24D18/00 , C22C9/02 , C22C26/00 , B22F3/00
CPC分类号： B23K35/302 , B24D18/00 , B24D3/08 , C22C26/00 , B22F2998/00 , B23K2201/20 , Y10T428/12056 , Y10T428/12063 , Y10T428/12576 , Y10T428/12625
摘要： A bond for a single layer metal bond abrasive tool can be easily chemically and electrochemically stripped from the metal core of a recovered used tool to facilitate reuse of the core. Relative to conventionally bonded tools, the speed of stripping the novel bond is quick, and the stripped core has a smooth, clean surface which needs only minimal mechanical repair prior to reuse. In one aspect, the novel bond consists essentially of a ternary bond composition of copper, tin and titanium, in which the copper and tin are pre-alloyed and the pre-alloy and titanium component are incorporated in the bond composition as fine particle size powders. In another aspect, the bond is a quaternary bond composition consisting essentially of copper, tin, titanium and silver. The powder components can be used dry or mixed with a fugitive liquid binder as a paste. The novel bond can be brazed at lower temperature than copper/tin/titanium bonds prepared otherwise. The bond composition forms a good melt at braze temperature that flows smoothly, evenly over a tool preform and provides consistent quality bonding of abrasive from tool to tool.
摘要翻译：用于单层金属结合研磨工具的粘合剂可以容易地从回收的二手工具的金属芯化学和电化学剥离，以便于芯的再利用。相对于常规结合的工具，剥离新粘合的速度是快速的，并且剥离的芯具有光滑，清洁的表面，在再次使用之前仅需要最小的机械修复。一方面，新型键基本上由铜，锡和钛的三元键组合物组成，其中铜和锡是预合金化的，并且预合金和钛组分作为细粒度粉末掺入粘合组合物中。另一方面，该键是基本上由铜，锡，钛和银组成的四价键组合物。粉末组分可以干燥或与悬浮液粘合剂混合使用，作为糊状物。该新型键可以在比其他方法制备的铜/锡/钛键低的温度下钎焊。焊接组合物在钎焊温度下形成良好的熔体，其平滑地均匀地流过工具预制件并且提供磨料从工具到工具的一致的质量粘合。

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