Includes Diamond Patents (Class 175/405.1)
  • Patent number: 10400516
    Abstract: A method for manufacturing a roof-bolt drill bit may include forming at least one coupling pocket in a bit body by (1) forming a pocket back surface, (2) forming a first pocket side surface including a substantially planar surface extending from the pocket back surface, and (3) forming a second pocket side surface including a substantially planar surface extending from the pocket back surface, the second pocket side surface being nonparallel to the first pocket side surface. The at least one coupling pocket may be defined by the pocket back surface, the first pocket side surface, and the second pocket side surface. The first pocket side surface may extend at an angle of between approximately 45° and approximately 90° relative to the second pocket side surface, and the first pocket side surface and the second pocket side surface may be separated from one another.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: September 3, 2019
    Assignee: APERGY BMCS ACQUISITION CORPORATION
    Inventor: E. Sean Cox
  • Patent number: 10316592
    Abstract: A well tool can include a cutter with at least one cutting layer and a substrate, the cutting layer having a leading face, and the substrate partially overlying the leading face. A method of constructing a well tool can include forming a cutter by at least partially embedding at least one cutting layer in a substrate, and securing the cutter to the well tool. A drill bit can include a drill bit blade, and a cutter secured on the drill bit blade, the cutter including a substrate and at least one cutting layer embedded in the substrate, the substrate overlying leading and trailing faces of the cutting layer.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: June 11, 2019
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Shilin Chen
  • Patent number: 9487847
    Abstract: Embodiments relate to polycrystalline diamond compacts (“PDCs”) and methods of manufacturing such PDCs in which an at least partially leached polycrystalline diamond (“PCD”) table is infiltrated with a low viscosity cobalt-based alloy infiltrant. In an embodiment, a method includes forming a PCD table in the presence of a metal-solvent catalyst in a first high-pressure/high-temperature (“HPHT”) process. The method includes at least partially leaching the PCD table to remove at least a portion of the metal-solvent catalyst therefrom to form an at least partially leached PCD table. The method includes subjecting the at least partially leached PCD table and a substrate to a second HPHT process effective to at least partially infiltrate the at least partially leached PCD table with an alloy infiltrant comprising at least one of a cobalt-based or nickel based alloy infiltrant having a composition at or near a eutectic composition of the alloy infiltrant.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: November 8, 2016
    Assignee: US SYNTHETIC CORPORATION
    Inventors: Debkumar Mukhopadhyay, Jair J. Gonzalez
  • Patent number: 9347275
    Abstract: A drill bit has a plurality of blades that include a coring blade, a plurality of flow courses that include an evacuation slot disposed between the plurality of blades, and a conical insert disposed on or proximate a bit centerline of the drill bit. Coring blade includes a first cutting element disposed at a first radial position from the bit centerline. Also, coring blade includes a substantially vertical surface and an angled surface. During drilling, first cutting element cuts formation to generate a core sample fragment at bit centerline. Core sample fragment is then broken away from formation using angled surface or conical insert after core sample fragment reaches a certain length. Core sample fragment then exits drill bit via an evacuation slot, from where core sample fragment is transported via an annulus to the surface of formation for testing and analysis.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: May 24, 2016
    Assignee: Smith International, Inc.
    Inventors: Michael G. Azar, Hemachandar Mada
  • Patent number: 9234399
    Abstract: Drilling tools include a bit crown and an integrated reamer. The bit crown and integrated reamer can be configured with approximately equal drilling lives. The bit crown can be impregnated with abrasive cutting media and include one or more external flutes. The integrated reamer can be positioned at the base the bit crown and include one or more channels that align with one or more of the outer flutes. The channels can taper such that they increase in width as they extend away from the bit crown.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: January 12, 2016
    Assignee: Longyear TM, Inc.
    Inventors: Cody A. Pearce, Michael D. Rupp, Christian M. Lambert
  • Patent number: 9200484
    Abstract: A superabrasive-impregnated earth-boring rotary drill bit includes cutting features extending outwardly from a bit body in a nose region of the drill bit. The cutting features comprise a composite material including superabrasive particles embedded within a matrix material. The cutting features extend from an outer surface of the bit body by a relatively high average distance. Methods of forming a superabrasive-impregnated earth-boring rotary drill bit include the formation of cutting features that extend outwardly from a bit body of a drill bit in a nose region of the drill bit. The cutting features are formed to comprise a particle-matrix composite material that includes superabrasive particles embedded within a matrix material. The cutting features are further formed such that they extend from the outer surface of the bit body by a relatively high average distance.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: December 1, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Christopher J. Cleboski, Scott F. Donald
  • Patent number: 9080400
    Abstract: A roof-bolt drill bit may include at least one cutting element having a cutting face and a cutting edge adjacent the cutting face. The roof-bolt drill bit may also include a bit body rotatable about a rotational axis in a rotational direction, with the rotational axis extending between a forward end and a rearward end of the bit body. The at least one cutting element may be mounted to the bit body at the forward end. The bit body may include at least one debris port defined in a side portion of the bit body located axially rearward from at least a portion of the at least one cutting element. The bit body may also include an internal passage defined within the bit body and at least one debris channel defined in the bit body.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: July 14, 2015
    Assignee: Dover BMCS Acquisition Corporation
    Inventors: E. Sean Cox, Russell Roy Myers
  • Patent number: 9080399
    Abstract: An earth-boring tool may comprise at least one cavity formed in a face thereof. At least one retractable pad residing in the at least one cavity may be coupled to a piston located at least partially within the at least one cavity. Additionally, a valve may be positioned within the earth-boring tool and configured to regulate flow of an incompressible fluid in contact with the piston through an opening of a reservoir. A cartridge may comprise a barrel wall defining a first bore, and a piston comprising at least one retractable pad positioned at least partially within the first bore. The barrel wall and the piston may define a first reservoir within the first bore, and a valve may be positioned and configured to regulate flow through an opening to the first reservoir. Related methods and devices are also disclosed.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: July 14, 2015
    Assignee: Baker Hughes Incorporated
    Inventor: Marcus Oesterberg
  • Patent number: 9051786
    Abstract: A drill bit includes a crown defining a central axis. The crown includes at least one segment. The segment includes a planar portion and a plurality of surface features continuous with and extending away from the planar portion. The surface features are discontinuous within the segment with respect to a first arced path defined at a first radial distance from the central axis.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: June 9, 2015
    Assignee: Longyear TM, Inc.
    Inventors: Christian M. Lambert, Michael D. Rupp
  • Patent number: 8991524
    Abstract: Drilling tools include a bit crown and an integrated reamer. The bit crown and the integrated reamer can be configured with approximately equal drilling lives. The bit crown can be impregnated with abrasive cutting media and include one or more external flutes. The integrated reamer can be positioned at the base the bit crown and include one or more channels that align with one or more of the outer flutes. The channels can taper such that they increase in width as they extend away from the bit crown.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: March 31, 2015
    Assignee: Longyear TM, Inc.
    Inventors: Cody A. Pearce, Christian M. Lambert, Michael D. Rupp
  • Patent number: 8936114
    Abstract: A composite may generally include a substantially continuous binder phase and a first reinforcing agent cluster infiltrated by the binder phase, the first reinforcing agent cluster comprising a plurality of first reinforcing agent particles. A drill bit may include at least one cutting element for engaging a formation and a bit body, at least a portion of said drill bit being a composite that includes a substantially continuous binder phase and a first reinforcing agent cluster infiltrated by the binder phase.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: January 20, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jeffrey Gerard Thomas, Brian Atkins
  • Patent number: 8820441
    Abstract: A drill bit having fixed Polycrystalline Diamond Compact cutters is used to drill a borehole having a core stump therein. A plurality of additional fixed Polycrystalline Diamond Compact cutters are disposed in the dome of the bit and are usable to concentrate stresses in the top end of the core stump to facilitate the cutting down of the core stump.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: September 2, 2014
    Assignee: Tercel IP Ltd.
    Inventor: James Shamburger
  • Publication number: 20140231149
    Abstract: Fibers for diamond-impregnated cutting tools and their associated methods for manufacture and use are described. A matrix is formed that contains fibers made from carbon, glass, ceramic, polymer, and the like. The matrix is then sintered to form a cutting portion of a drill bit. The type and concentration of the fibers can be modified to control the tensile strength and the erosion rate of the matrix to optimize the cutting performance of the tools. Additionally, the fibers may be added to the cutting section to weaken the structure and allow higher modulus binders to be used for the cutting tools at a lower cost, allowing the amount of fibers to be tailored to retain the diamonds in the cutting portion for the desired amount. As the cutting portion erodes, the fibers may also increase the lubricity at the face of the cutting portion.
    Type: Application
    Filed: March 28, 2014
    Publication date: August 21, 2014
    Applicant: Longyear TM, Inc.
    Inventors: Kristian S. Drivdahl, Michael D. Rupp, Christian M. Lambert, Cody A. Pearce
  • Patent number: 8783384
    Abstract: Fibers for diamond-impregnated cutting tools and their associated methods for manufacture and use are described. A matrix is formed that contains fibers made from carbon, glass, ceramic, polymer, and the like. The matrix is then sintered to form a cutting portion of a drill bit. The type and concentration of the fibers can be modified to control the tensile strength and the erosion rate of the matrix to optimize the cutting performance of the tools. Additionally, the fibers may be added to the cutting section to weaken the structure and allow higher modulus binders to be used for the cutting tools at a lower cost, allowing the amount of fibers to be tailored to retain the diamonds in the cutting portion for the desired amount. As the cutting portion erodes, the fibers may also increase the lubricity at the face of the cutting portion.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: July 22, 2014
    Assignee: Longyear TM, Inc.
    Inventors: Kristian S. Drivdahl, Michael D. Rupp
  • Publication number: 20140138162
    Abstract: A core drill bit includes an elongate hollow cylindrical body having opposite first and second end sections, a plurality of cutting segments with a connecting portion joined to the second end section, a plurality of reinforcing members joined to the second end section between the cutting segments and contacting adjacent cutting segments to offer rotational support thereto, and a plurality of current concentrators disposed on one or both of the second end section and the connecting portion. The cutting segments being capacitive discharge welded to the second end section whereby the surface of the second end section melts during the welding to affix the cutting segments with the tool body. The cutting segments include diamonds dispersed therein with portions having varying diamond concentrations.
    Type: Application
    Filed: October 3, 2013
    Publication date: May 22, 2014
    Applicant: Diamond Products, Limited
    Inventors: Karl H. Moller, Thomas G. Ruffner
  • Patent number: 8684111
    Abstract: A drill bit is disclosed. The drill bit has an axis, and a barrel, and a cutting member fixed to the barrel. The barrel is arranged to engage a drill shaft for driving the drill bit around the axis. The barrel and the cutting member are adjacently located on the axis. The drill bit has an aperture centered on the axis, the aperture passing completely through both the cutting member and barrel.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: April 1, 2014
    Assignee: Sandvik Intellectual Property AB
    Inventors: Andy Bell, Raymond Purser
  • Patent number: 8662210
    Abstract: In an embodiment, a rotary drill bit includes a bit body having a leading end structure configured to facilitate drilling a subterranean formation, and a plurality of cutting elements mounted to the bit body. At least one of the plurality of cutting elements includes a polycrystalline diamond compact (“PDC”) comprising a cemented carbide substrate including a first cemented carbide portion and a second cemented carbide portion bonded to the first cemented carbide portion and exhibiting an erosion resistance that is greater than the first cemented carbide portion. The PDC further comprises a polycrystalline diamond (“PCD”) table bonded to the first cemented carbide portion. The PCD table includes a plurality of bonded diamond grains exhibiting diamond-to-diamond bonding therebetween, with the plurality of bonded diamond grains defining a plurality of interstitial regions.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: March 4, 2014
    Assignee: US Synthetic Corporation
    Inventors: Debkumar Mukhopadhyay, Kenneth E. Bertagnolli, Jair J. Gonzalez
  • Patent number: 8657183
    Abstract: A method of bonding poly-crystalline diamonds to a wear surface, using commercially available poly-crystalline diamond cutters having poly-crystalline diamond buttons bonded to a carbide core. The poly-crystalline diamond cutters are cooled with cryogenic liquid. The poly-crystalline diamond cutters are crushed to form poly-crystalline diamond cutter fragments, with each of the fragments having a poly-crystalline diamond button fragment still bonded to a carbide core fragment. The carbide core fragment is then bonded onto the wear surface, such that the wear surface includes poly-crystalline diamond buttons fragments.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: February 25, 2014
    Inventors: Gary J. Bakken, Mike Zulak
  • Patent number: 8596387
    Abstract: Embodiments relate to polycrystalline diamond compacts (“PDCs”) including a non-uniformly leached polycrystalline diamond (“PCD”) table, and methods of fabricating such PDCs. In an embodiment, a PDC includes a substrate and a PCD table integrally formed with and bonded to the substrate. The PCD table defines an upper surface and at least one peripheral surface. The PCD table includes a plurality of bonded diamond grains. The PCD table includes a first region adjacent to the substrate that includes metal-solvent catalyst disposed interstitially between the bonded diamond grains thereof, and a leached second region extending inwardly from the upper surface and the at least one peripheral surface that is depleted of the metal-solvent catalyst. The leached second region exhibits a leach depth profile having a maximum leach depth that is measured from the upper surface.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: December 3, 2013
    Assignee: US Synthetic Corporation
    Inventors: Mohammad N. Sani, Andrew E. Dadson
  • Patent number: 8579053
    Abstract: A cutting element that includes a substrate; and an outer layer of polycrystalline diamond material disposed upon the outermost end of the cutting element, wherein the polycrystalline diamond material: a plurality of interconnected diamond particles; and a plurality of interstitial regions disposed among the bonded diamond particles, wherein the plurality of interstitial regions contain a plurality of metal carbide phases and a plurality of metal binder phases together forming a plurality of metallic phases, wherein the plurality of metal carbide phases are formed from a plurality of metal carbide particles; wherein the plurality of interconnected diamond particles form at least about 60 to at most about 80% by weight of the polycrystalline diamond material; and wherein the plurality of metal carbide phases represent at least 50% by weight of the plurality of metallic phases is disclosed.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: November 12, 2013
    Assignee: Smith International, Inc.
    Inventors: Federico Bellin, Yi Fang, Michael Stewart, Nephi M. Mourik, Peter T. Cariveau
  • Patent number: 8579052
    Abstract: Polycrystalline compacts include hard polycrystalline materials comprising in situ nucleated smaller grains of hard material interspersed and inter-bonded with larger grains of hard material. The average size of the larger grains may be at least about 250 times greater than the average size of the in situ nucleated smaller grains. Methods of forming polycrystalline compacts include nucleating and catalyzing the formation of smaller grains of hard material in the presence of larger grains of hard material, and catalyzing the formation of inter-granular bonds between the grains of hard material. For example, nucleation particles may be mixed with larger diamond grains, a carbon source, and a catalyst. The mixture may be subjected to high temperature and high pressure to form smaller diamond grains using the nucleation particles, the carbon source, and the catalyst, and to catalyze formation of diamond-to-diamond bonds between the smaller and larger diamond grains.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: November 12, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Anthony A. DiGiovanni, Danny E. Scott
  • Patent number: 8573330
    Abstract: An insert for a drill bit may include a metallic carbide body; an outer layer of polycrystalline diamond material on the outermost end of the insert, the polycrystalline diamond material comprising a plurality of interconnected first diamond grains and a first binder material in interstitial regions between the interconnected first diamond grains; and at least one transition layer between the metallic carbide body and the outer layer, the at least one transition layer comprising a composite of second diamond grains, first metal carbide particles, and a second binder material, wherein the second diamond grains have a larger grain size than the first diamond grains.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: November 5, 2013
    Assignee: Smith International, Inc.
    Inventors: Nephi M. Mourik, Peter T. Cariveau, Federico Bellin, Yi Fang
  • Patent number: 8499861
    Abstract: Ultra-hard composite constructions comprise an ultra-hard body having a plurality of diamond crystals bonded to one another by a carbide reaction product. A reactant material is selected from materials that are strong carbide formers to form a carbide reaction product with diamond at HPHT conditions. The body includes a high-density diamond region positioned along a surface portion of the body and that is substantially exclusively diamond, and that has a diamond volume content of 95 to 99 percent or more. The high-density diamond region can form a working surface of the composite construction. A substrate can be attached to the body, thereby forming a compact, and can include metallic materials, ceramic materials, carbides, nitrides, cermets, and mixtures thereof. An intermediate layer can be interposed between the body and the substrate depending on the substrate and/or method of attaching the same.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: August 6, 2013
    Assignee: Smith International, Inc.
    Inventors: Madapusi K. Keshavan, Anthony Griffo
  • Publication number: 20130140095
    Abstract: A drill bit matrix is provided that contains a powdered abrasive material and a refractory metal powder in which the refractory metal powder is a coated powder in which each granule of the refractory metal powder is coated by a coating material. A core drill bit is further provided, containing a powdered abrasive material, a refractory metal powder and a steel tube onto which the powdered abrasive material and refractory metal powder are alloyed. The refractory metal powder is a coated powder in which each granule of the refractory metal powder is coated by one or more coating materials. A method is finally provided for manufacturing a core drill bit. First a matrix is formed by mixing together a powdered abrasive material and a coated refractory metal powder. The matrix is placed in a mould and a steel tube is placed on top of the mould to form a drill bit assembly. The drill bit assembly is then heated under atmospheric conditions.
    Type: Application
    Filed: August 6, 2010
    Publication date: June 6, 2013
    Inventor: Robert Kenneth Miller
  • Publication number: 20130020134
    Abstract: A drill bit has a plurality of blades that include a coring blade, a plurality of flow courses that include an evacuation slot disposed between the plurality of blades, and a conical insert disposed on or proximate a bit centerline of the drill bit. Coring blade includes a first cutting element disposed at a first radial position from the bit centerline. Also, coring blade includes a substantially vertical surface and an angled surface. During drilling, first cutting element cuts formation to generate a core sample fragment at bit centerline. Core sample fragment is then broken away from formation using angled surface or conical insert after core sample fragment reaches a certain length. Core sample fragment then exits drill bit via an evacuation slot, from where core sample fragment is transported via an annulus to the surface of formation for testing and analysis.
    Type: Application
    Filed: June 20, 2012
    Publication date: January 24, 2013
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Michael G. Azar, Hemachandar Mada
  • Patent number: 8210287
    Abstract: A core drill bit includes an elongate hollow cylindrical body having opposite first and second ends with an end section having an end face defining an annular non-planar surface. The cutting head includes a plurality of circumferentially spaced apart cutting segments, the cutting segments being electrical welded to the non-planar surface whereby raised portions of the surface melt during the welding to affix the cutting segments with the face of the tool body.
    Type: Grant
    Filed: January 4, 2010
    Date of Patent: July 3, 2012
    Assignee: Diamond Products, Limited
    Inventors: Karl H. Moller, Andrew L. Jedick, Thomas G. Ruffner
  • Patent number: 8186460
    Abstract: A segmental hard material insert for a working tool has a planar polycrystalline diamond layer (13) having, in its layer plane, a main cutting element (16, 36) and a contact edge (15) located opposite the main cutting element, with the main cutting element (16, 36) having two, facing outwardly, convex cutting sections (17, 27; 37, 47) and a smooth, facing outwardly, concave transitional region (19; 39, 49) connecting the two convex cutting sections (17, 27; 37, 47), and with the apex (20; 40) of the transitional region (19; 39, 47) being located on a central line of the main cutting element (16; 36).
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: May 29, 2012
    Assignee: Hilti Aktiengesellschaft
    Inventors: Luis Fernando Garcia, Alfred Lammer, Klaus-Peter Bohn, Till Cramer, Peter Mugg, Steven Moseley
  • Patent number: 8146686
    Abstract: Fibers for diamond-impregnated cutting tools and their associated methods for manufacture and use are described. A matrix is formed that contains fibers made from carbon, glass, ceramic, polymer, and the like. The matrix is then sintered to form a cutting portion of a drill bit. The type and concentration of the fibers can be modified to control the tensile strength and the erosion rate of the matrix to optimize the cutting performance of the tools. Additionally, the fibers may be added to the cutting section to weaken the structure and allow higher modulus binders to be used for the cutting tools at a lower cost, allowing the amount of fibers to be tailored to retain the diamonds in the cutting portion for the desired amount. As the cutting portion erodes, the fibers may also increase the lubricity at the face of the cutting portion.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: April 3, 2012
    Assignee: Longyear TM, Inc.
    Inventors: Kristian S. Drivdahl, Michael D. Rupp
  • Patent number: 8147572
    Abstract: Thermally stable diamond constructions comprise a diamond body having a plurality of bonded diamond crystals and a plurality of interstitial regions disposed among the crystals. A metallic substrate is attached to the diamond body. A working surface is positioned along an outside portion of the diamond body, and the diamond body comprises a first region that is substantially free of a catalyst material, and a second region that includes the catalyst material. The diamond body first region extends from the working surface to depth of at least about 0.02 mm to a depth of less than about 0.09 mm. The diamond body includes diamond crystals having an average diamond grain size of greater than about 0.02 mm, and comprises at least 85 percent by volume diamond based on the total volume of the diamond body.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: April 3, 2012
    Assignee: Smith International, Inc.
    Inventors: Ronald K. Eyre, Anthony Griffo, Thomas W. Oldham
  • Patent number: 8051929
    Abstract: Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: November 8, 2011
    Assignee: Longyear TM, Inc.
    Inventors: K. Shayne Drivdahl, Michael D. Rupp
  • Patent number: 8025107
    Abstract: Reamers for use in core-sample drilling include PDC inserts. Such reamers with PDC inserts may be used to maintain borehole diameters, reduce deviation, and/or stabilize drill strings used in core sample drilling. The PDC inserts may be of different sizes and shapes and may be arranged around the reamers in various ways.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: September 27, 2011
    Assignee: Longyear TM, Inc.
    Inventors: Kristian S. Drivdahl, Erik M. Gaugh, Michael D. Rupp
  • Patent number: 7958954
    Abstract: Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: June 14, 2011
    Assignee: Longyear TM, Inc.
    Inventors: K. Shayne Drivdahl, Michael D. Rupp
  • Patent number: 7918288
    Abstract: Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: April 5, 2011
    Assignee: Longyear TM, Inc.
    Inventors: K. Shayne Drivdahl, Michael D. Rupp
  • Patent number: 7909119
    Abstract: Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: March 22, 2011
    Assignee: Longyear TM, Inc.
    Inventors: K. Shayne Drivdahl, Michael D. Rupp
  • Patent number: 7874384
    Abstract: Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: January 25, 2011
    Assignee: Longyear TM, Inc.
    Inventors: K. Shayne Drivdahl, Michael D. Rupp
  • Patent number: 7828090
    Abstract: Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: November 9, 2010
    Assignee: Longyear TM, Inc.
    Inventors: K. Shayne Drivdahl, Michael D. Rupp
  • Publication number: 20100200304
    Abstract: Abrasive tip for abrasive tool and method for forming and replacing thereof are disclosed. The abrasive tip facilitates easy and quick attachment to an abrasive tool.
    Type: Application
    Filed: February 10, 2010
    Publication date: August 12, 2010
    Applicants: SAINT-GOBAIN ABRASIVES, INC., SAINT-GOBAIN ABRASIFS
    Inventors: Ignazio Gosamo, Sebastien Marcel Robert Douveneau
  • Patent number: 7695542
    Abstract: Fibers for diamond-impregnated cutting tools and their associated methods for manufacture and use are described. The cutting tools contain a diamond-impregnated cutting portion that contains fibers made from carbon, glass, ceramic, polymer, and the like. The fibers can be in any form, including chopped and milled fibers. The fibers may also be coated with metal, ceramic, or other performance-enhancing coatings. The fibers may be used to both control the tensile strength control the erosion rate of the matrix to optimize the cutting performance of the tools. Additionally, the fibers may also weaken the structure and allow higher modulus binders to be used for the cutting tools at a lower cost, allowing the amount of fibers to be tailored to retain the diamonds in the cutting portion for the desired amount. And as the cutting portion erodes, the fibers may also increase the lubricity at the face of the cutting portion.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: April 13, 2010
    Assignee: Longyear TM, Inc.
    Inventors: Kristian S. Drivdahl, Michael D. Rupp
  • Publication number: 20100012381
    Abstract: Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
    Type: Application
    Filed: September 28, 2009
    Publication date: January 21, 2010
    Applicant: LONGYEAR TM, INC.
    Inventors: K. Shayne Drivdahl, Michael D. Rupp
  • Publication number: 20100012382
    Abstract: Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
    Type: Application
    Filed: September 28, 2009
    Publication date: January 21, 2010
    Applicant: LONGYEAR TM, INC.
    Inventors: K. Shayne Drivdahl, Michael D. Rupp
  • Patent number: 7641004
    Abstract: A bit for drilling a hole.
    Type: Grant
    Filed: January 16, 2006
    Date of Patent: January 5, 2010
    Assignee: Groupe Fordia Inc.
    Inventor: Paul-Philippe Lapointe
  • Patent number: 7628228
    Abstract: Core drill bits with long crown heights are described herein. The core drill bits have a series of slots or openings that are not located at the tip of the crown and are therefore enclosed in the body of the crown. The slots may be staggered and/or stepped throughout the crown. As the cutting portion of the drill bit erodes through normal use, the fluid/debris notches at the tip of the bit are eliminated. As the erosion progresses, the slots become exposed and then they function as fluid/debris ways. This configuration allows the crown height to be extended and lengthened without substantially reducing the structural integrity of the drill bit.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: December 8, 2009
    Assignee: Longyear TM, Inc.
    Inventors: K. Shayne Drivdahl, Michael D. Rupp
  • Publication number: 20090283328
    Abstract: Reamers for use in core-sample drilling having PDC inserts and methods for using the reamers with PDC inserts are described. A reamer with PDC inserts may be used to maintain borehole diameters, reduce deviation, and/or stabilize drill strings used in core sample drilling. The PDC inserts may be of different sizes and shapes and may be arranged around the reamer in various ways.
    Type: Application
    Filed: January 6, 2009
    Publication date: November 19, 2009
    Applicant: Longyear TM, Inc.
    Inventors: Kristian S. Drivdahl, Erik M. Gaugh, Michael D. Rupp
  • Publication number: 20090242278
    Abstract: A segmental hard material insert for a working tool has a planar polycrystalline diamond layer (13) having, in its layer plane, a main cutting element (16, 36) and a contact edge (15) located opposite the main cutting element, with the main cutting element (16, 36) having two, facing outwardly, convex cutting sections (17, 27; 37, 47) and a smooth, facing outwardly, concave transitional region (19; 39, 49) connecting the two convex cutting sections (17, 27; 37, 47), and with the apex (20; 40) of the transitional region (19; 39, 47) being located on a central line of the main cutting element (16; 36).
    Type: Application
    Filed: March 9, 2009
    Publication date: October 1, 2009
    Inventors: Luis Fernando Garcia, Alfred Lammer, Klaus-Peter Bohn, Till Cramer, Peter Mugg, Steven Moseley
  • Patent number: 7341120
    Abstract: A cutting portion structure of a core drill having diamond grains may affect deformation of a tip end portion of a cutting blade after extended use. A core drill A comprises cutting blades 2 formed at an opening end portion 4 of a cylindrical core body 1 and arranged in a circumferential direction of the core body to have gaps 3 between the cutting blades 2. As viewed from a direction substantially perpendicular to a cross-sectional view in a radial direction of the core body 1, the opening end portion 4 has an end face 4A which is rounded without edges, and diamond grains are bound on the opening end portion 4 which is rounded without edges from an inner peripheral side to an outer peripheral side, thereby forming the cutting blades 2.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: March 11, 2008
    Assignee: Kabushiki Kaisha Miyanaga
    Inventor: Masaaki Miyanaga
  • Patent number: 7278499
    Abstract: A rotary drag bit including an inverted cone geometry proximate the longitudinal axis thereof is disclosed. The inverted cone region may include a central region, the central region including a plurality of cutting structures affixed thereto and arranged along at least one spiral path. The at least one spiral path may encircle its center of revolution at least once within the inverted cone region. A cone region displacement and a method for manufacturing a rotary drag bit therewith are disclosed. At least one groove may be formed within the cone region displacement along a respective at least one spiral path, the at least one spiral path encircling its center of revolution at least once. A plurality of cutting structures may be placed within the at least one groove and the cone region displacement may be placed within a mold for filling with an infiltratable powder and infiltrating with a hardenable infiltrant.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: October 9, 2007
    Assignee: Baker Hughes Incorporated
    Inventors: Volker Richert, David W. Watson
  • Patent number: 7258179
    Abstract: In one aspect of the invention a drill bit assembly has a body portion intermediate a shank portion and a working portion. The working portion has a recess with a side wall which is substantially coaxial with the shank portion. At least one cutting element is attached to the side wall and an indenting member is disposed within the closed end. In another aspect of the invention a method includes providing a drill bit assembly with a recess formed in a working portion of the assembly. The working portion has a plurality of cutting elements and the recess has at least one cutting element. The method further has steps of cutting a formation with the plurality of cutting elements and also of penetrating a conical profile of the formation which is formed by the recess.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: August 21, 2007
    Inventor: David R. Hall
  • Patent number: 6595844
    Abstract: A core drill having a shank and a cup shaped base metal section constructed of a disk shaped top wall and a cylindrical side wall provided on a fore-end of the shank. A grinding stone portion is mounted on an outer end part of the base metal section, with abrasive grains fixed to the outer end part of the base metal section. Abrasive grain layers are formed in a spiral pattern on inner and outer side surfaces of the cylindrical side wall of the base metal section, with abrasive grains fixed to the inner and outer side surfaces of the cylindrical side wall thereof. When the grinding stone portion is put into rotational contact with a workpiece, the workpiece is ground through to form a circle hole in section leaving a cylindrical core therein.
    Type: Grant
    Filed: November 8, 2000
    Date of Patent: July 22, 2003
    Assignees: Atock Co., Ltd., Shin-Etsu Quartz Products Co., Ltd., Yamagata Shin-Etsu Quartz Co., Ltd.
    Inventors: Toru Mizuno, Ikuo Hattori, Akihiko Sugama, Toshikatsu Matsuya, Yoshiaki Ise
  • Patent number: 6474425
    Abstract: A drill bit including a bit body and a plurality of blades formed in the bit body. The blades are formed, at least in part, from a base matrix material that on one embodiment is impregnated with abrasive particles. One side of the bit is formed, with respect to its axis of rotation, to a smaller radius than the opposite side of the bit. The asymmetry of the bit enables the bit to drill a larger diameter hole than a pass through diameter of the bit. The opposite side defines a contact angle between the bit and a formation. In one embodiment, the contact angle is at least 140 degrees. In one embodiment, a plurality of inserts may be located on the blades to provide gage protection. In another embodiment, the bit may also include a gage sleeve that helps keep the bit stabilized in the wellbore.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: November 5, 2002
    Assignee: Smith International, Inc.
    Inventors: David Truax, Timothy P. Beaton
  • Patent number: 6283233
    Abstract: A drill and/or core tool, in particular for oil drilling and/or coring, comprising a body (2) showing a substantially cylindrical peripheral surface (3) and a front (4), blades (5) which extend from the front (4) till over the peripheral surface (3) and which show each a leading edge (6), possibly PDC cutting elements (7) which are situated at least in a central area (15A) of the front (4) and the longitudinal axes of which are transverse to the rotation axis of the tool (1), and comprising moreover, on at least one blade (5), outside said central area (15A): PDC (7C) and/or secondary (10) cutting elements which show each a cutting edge (8), forming together the leading edge (6) of the blade (5), and the longitudinal axis of which is transverse to the rotation axis, and at least one associated cutting element (10A) which is situated behind at least one of the PDC (7C) or secondary (10) cutting elements, which shows a cross-section of the same shape, at least for its portion protruding from the blade (5), than
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: September 4, 2001
    Assignee: Dresser Industries, Inc
    Inventors: Etienne Lamine, Sebastian Desmette, Cécile Josse