Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8181723 | Bits and cutting structures A cutting element for a downhole cutting tool including a support element, a shearing element disposed on said support, wherein the shearing element is disposed proximal to a leading edge of the downhole cutting tool, and a retaining element overlaying at least a po... | 05/22/2012 |
| 8172012 | Cutting tool insert and drill bit so equipped A polycrystalline diamond abrasive cutting element consists generally of a layer of high grade polycrystalline diamond bonded to a cemented carbide substrate. The polycrystalline diamond layer has a working surface and an outer peripheral surface and is characterize... | 05/08/2012 |
| 8151911 | Polycrystalline diamond compact, methods of fabricating same, and rotary drill bit using same Embodiments of the present invention relate to superabrasive materials, superabrasive compacts employing such superabrasive materials, and methods of fabricating such superabrasive materials and compacts. In one embodiment, a superabrasive material includes a matrix... | 04/10/2012 |
| 8109350 | Polycrystalline abrasive composite cutter A polycrystalline abrasive composite cutter, including a tool body with a top cutting surface and a flank surface. The composite cutter, joined to a substrate, constitute a shear cutter for a PDC bit, roller-cone bit insert, or other tool that can be highly useful f... | 02/07/2012 |
| 8100203 | Diamond impregnated bits and method of using and manufacturing the same A drill bit that includes a body having a lower end face for engaging a rock formation, the end face having a plurality of raised ribs extending from the face of the bit body and separated by a plurality of channels therebetween; and at least one of the plurality of... | 01/24/2012 |
| 8069937 | Polycrystalline diamond compact including a cemented tungsten carbide substrate that is substantially free of tungsten carbide grains exhibiting abnormal grain growth and applications therefor Embodiments relate to polycrystalline diamond compacts (“PDCs”) including a polycrystalline diamond (“PCD”) table that is substantially free of defects formed due to abnormal grain growth of tungsten carbide grains, and methods of fabricating such PDCs. In a... | 12/06/2011 |
| 8069936 | Encapsulated diamond particles, materials and impregnated diamond earth-boring bits including such particles, and methods of forming such particles, materials, and bits Earth-boring tools and components thereof include a particle-matrix composite material having encapsulated diamond particles embedded within a matrix material. Diamonds in the particles comprise less than about 25% by volume of the composite material, the matrix mat... | 12/06/2011 |
| 8061458 | Polycrystalline diamond compact (PDC) cutting element having multiple catalytic elements A polycrystalline diamond compact useful for wear, cutting, drilling, drawing and like applications is provided with a first diamond region remote from the working surface which has a metallic catalyzing material and a second diamond region adjacent to or including ... | 11/22/2011 |
| 8028774 | Thick pointed superhard material A high impact resistant tool includes a superhard material bonded to a cemented metal carbide substrate at a non-planar interface. The superhard material has a substantially pointed geometry with a sharp apex having a radius of curvature of 0.050 to 0.125 inches. Th... | 10/04/2011 |
| 8020644 | Thermally stable polycrystalline diamond materials, cutting elements incorporating the same and bits incorporating such cutting elements A cutting element is provided including a substrate and a TSP material layer over the substrate. The TSP material layer includes at least a property having a value that varies through the layer. ... | 09/20/2011 |
| 8020645 | Method of fabricating polycrystalline diamond and a polycrystalline diamond compact Embodiments of the invention relate to polycrystalline diamond (“PCD”) exhibiting enhanced diamond-to-diamond bonding. In an embodiment, PCD includes a plurality of diamond grains defining a plurality of interstitial regions. A metal-solvent catalyst occupies at... | 09/20/2011 |
| 7950477 | Polycrystalline diamond compact (PDC) cutting element having multiple catalytic elements A polycrystalline diamond compact useful for wear, cutting, drilling, drawing and like applications is provided with a first diamond region remote from the working surface which has a metallic catalyzing material and a second diamond region adjacent to or including ... | 05/31/2011 |
| 7946363 | Thermally stable polycrystalline diamond cutting elements and bits incorporating the same Cutting elements are provided having substrates including end surfaces. TSP material layers extend over only a portion of the end surfaces or extend into the substrates below the end surfaces. Bits incorporating such cutting elements are also provided. ... | 05/24/2011 |
| 7946362 | Matrix drill bits with back raked cutting elements A matrix drill bit and method of manufacturing a matrix bit having back raked cutting elements is disclosed. In one aspect, a matrix drill bit for well drilling includes a matrix bit body that has a front area in a direction of drilling and two or more diamond impre... | 05/24/2011 |
| 7942219 | Polycrystalline diamond constructions having improved thermal stability PCD constructions include a PCD body comprising a polycrystalline matrix region, a first region that includes a replacement material positioned remote from a body surface, and a second region that is substantially free of the replacement material and that extends a ... | 05/17/2011 |
| 7918293 | Method and system for perceiving a boundary between a first region and a second region of a superabrasive volume Methods of evaluating a superabrasive volume or a superabrasive compact are disclosed. One method may comprise exposing a superabrasive volume to beta particles and detecting a quantity of scattered beta particles. Further, a boundary may be perceived between a firs... | 04/05/2011 |
| 7845438 | Polycrystalline diamond compacts, methods of fabricating same, and applications using same Embodiments relate to PDCs, methods of fabricating PDCs, and applications for such PDCs. In an embodiment, a PDC includes a substrate and a pre-sintered PCD table including an interfacial surface that is bonded to the substrate. The pre-sintered PCD table may be sub... | 12/07/2010 |
| 7810588 | Multi-layer encapsulation of diamond grit for use in earth-boring bits A method of constructing an earth-boring, diamond-impregnated drill bit has a first step of coating diamond grit with tungsten to create tungsten-coated diamond particles. These coated particles are then encapsulated in a layer of carbide powder held by an organic g... | 10/12/2010 |
| 7806206 | Superabrasive materials, methods of fabricating same, and applications using same Embodiments of the present invention relate to superabrasive materials, superabrasive compacts employing such superabrasive materials, and methods of fabricating such superabrasive materials and compacts. In one embodiment, a superabrasive material includes a matrix... | 10/05/2010 |
| 7757792 | Method and apparatus for selectively leaching portions of PDC cutters already mounted in drill bits A polycrystalline diamond compact (PDC) drill bit having a plurality of PDC cutters, each having a body of diamond crystals containing catalyzing material, is coated with a material which is impervious to a given acid. After the coating is dried, a segment of the co... | 07/20/2010 |
| 7757791 | Cutting elements formed from ultra hard materials having an enhanced construction Cutting elements of this invention include an ultra hard body joined with a metallic substrate. The body includes an uppermost layer comprising a plurality of bonded ultra hard crystals and interstitial regions, and that form a body working surface. The uppermost la... | 07/20/2010 |
| 7730977 | Cutting tool insert and drill bit so equipped A polycrystalline diamond abrasive cutting element consists generally of a layer of high grade polycrystalline diamond bonded to a cemented carbide substrate. The polycrystalline diamond layer has a working surface and an outer peripheral surface and is characterize... | 06/08/2010 |
| 7726421 | Diamond-bonded bodies and compacts with improved thermal stability and mechanical strength Thermally stable diamond-bonded compacts include a diamond-bonded body having a thermally stable region extending a distance below a diamond-bonded body surface. The thermally stable region comprises a matrix first phase of bonded together diamond crystals, and a se... | 06/01/2010 |
| 7694757 | Thermally stable polycrystalline diamond materials, cutting elements incorporating the same and bits incorporating such cutting elements A cutting element is provided including a substrate and a TSP material layer over the substrate. The TSP material layer includes at least a property having a value that varies through the layer. ... | 04/13/2010 |
| 7669674 | Degradation assembly In one aspect of the invention, a tool has a working portion with at least one impact tip brazed to a carbide extension. The carbide extension has a cavity formed in a base end and is adapted to interlock with a shank assembly of the cutting element assembly. The sh... | 03/02/2010 |
| 7635035 | Polycrystalline diamond compact (PDC) cutting element having multiple catalytic elements A polycrystalline diamond compact useful for wear, cutting, drilling, drawing and like applications is provided with a first diamond region remote from the working surface which has a metallic catalyzing material and a second diamond region adjacent to or including ... | 12/22/2009 |
| 7628234 | Thermally stable ultra-hard polycrystalline materials and compacts Thermally stable ultra-hard polycrystalline materials and compacts comprise an ultra-hard polycrystalline body that wholly or partially comprises one or more thermally stable ultra-hard polycrystalline region. A substrate can be attached to the body. The thermally s... | 12/08/2009 |
| 7588102 | High impact resistant tool A tool has a sintered body of diamond or diamond-like particles in a metal matrix bonded to a cemented metal carbide substrate at a non-planar interface. A working surface has at least one region fir enough away from the non-planar interface that during high pressur... | 09/15/2009 |
| 7516804 | Polycrystalline diamond element comprising ultra-dispersed diamond grain structures and applications utilizing same Superabrasive elements, methods of fabricating such elements, and applications utilizing such elements. In one embodiment, a superabrasive element includes a mass of polycrystalline diamond including ultra-dispersed diamond grain structures present in an amount grea... | 04/14/2009 |
| 7493973 | Polycrystalline diamond materials having improved abrasion resistance, thermal stability and impact resistance PCD materials comprise a diamond body having bonded diamond crystals and interstitial regions disposed among the crystals. The diamond body is formed from diamond grains and a catalyst material at high pressure/high temperature conditions. The diamond grains have an... | 02/24/2009 |
| 7487849 | Thermally stable diamond brazing A cutting element and a method for forming a cutting element is described and shown. The cutting element includes a substrate, a TSP diamond layer, a metal interlayer between the substrate and the diamond layer, and a braze joint securing the diamond layer to the su... | 02/10/2009 |
| 7426969 | Bits and cutting structures This invention provides an improved cutting element for downhole cutting tools comprising a support element and a shearing element disposed on said support; a drill bit insert comprising a body and said cutting element disposed on said body; and a cutting tool, such... | 09/23/2008 |
| 7395880 | Mortar removal drill bit system A mortar removal drill bit system includes a toothed drill bit that includes an elongated rod that has a first end and a second end. A plurality of rectangular plates is attached to and extends laterally from the rod. Each of the plates has a distal edge with respec... | 07/08/2008 |
| 7392865 | Randomly-oriented composite constructions Composite constructions comprise a plurality of granules that are arranged together in a randomly-oriented manner. The granules each comprise an ordered arrangement of a first material phase and a second material phase, wherein the first and second material phases a... | 07/01/2008 |
| 7368079 | Method for forming ultra hard sintered compacts using metallic peripheral structures in the sintering cell A method for forming an ultra hard material layer is provided. The method includes disposing a metallic liner inside the periphery of a refractory metal enclosure, introducing ultra hard material feed stock into the enclosure, and sintering using HPHT processing and... | 05/06/2008 |
| 7363992 | Cutters for downhole cutting devices Improved cutter design as well as an improved design for downhole cutters, such as mandrel cutters and rotary cutter mills. A cutter is described with a rectangular, rounded “lozenge” shape. The cutter presents a cross-sectional cutting area having a pair of cur... | 04/29/2008 |
| 7353893 | Tool with a large volume of a superhard material In one aspect of the invention, a tool has a wear-resistant base suitable for attachment to a driving mechanism and also a hard tip attached to an interfacial surface of the base. The tip has a first cemented metal carbide segment bonded to a superhard material at a... | 04/08/2008 |
| 7350601 | Cutting elements formed from ultra hard materials having an enhanced construction Cutting elements of this invention include an ultra hard body joined with a metallic substrate. The body includes an uppermost layer comprising a plurality of bonded ultra hard crystals and interstitial regions, and that defines a body working surface. The uppermost... | 04/01/2008 |
| 7347292 | Braze material for an attack tool In one aspect of the invention, a tool has a wear-resistant base suitable for attachment to a driving mechanism and also a hard tip attached to an interfacial surface of the base. The tip has a first cemented metal carbide segment bonded to a superhard material at a... | 03/25/2008 |
| 7311159 | PCD face seal for earth-boring bit An earth-boring bit has a mechanical face seal assembly with PCD faces. The bit has a bearing shaft with a cone rotatably mounted on the bearing shaft. The seal locates between the bearing shaft and the cone for sealing lubricant therein. The seal includes at least ... | 12/25/2007 |
