Miscellaneous Patents (Class 51/293)
-
Publication number: 20120240475Abstract: In a method for producing a base body with hard material particles, an adhesive (23) is first of all applied with a defined film thickness to the entire or parts of the working surface (20?) of the tool to be produced. Next, the hard material particles (22) are applied to the regions of the working surface provided with the adhesive (23) for lasting adhesion. Hard material particles (22) are applied evenly by means of an apparatus and are then transferred to the working surface (20?) of the tool (20) to be produced provided with the adhesive (23), on which they remain adhered before the adhesive (23) has hardened. This method enables rapid coating of the working surface of the tool with a predeterminable uniform number of detached hard material particles per unit of area.Type: ApplicationFiled: March 16, 2012Publication date: September 27, 2012Applicant: REISHAUER AGInventors: SHERLINE WUNDER, CHRISTOPH RUDOLF, Benno ZIGERLIG, Friedrich KUSTER
-
Patent number: 8262757Abstract: An abrasive article includes a polymer binder, an infrared radiation absorbing dye, and abrasive grains. In particular embodiments, the abrasive articles have been at least partially cured using infrared radiation. The abrasive articles of the present invention can include, for example, coated abrasives, structured abrasives, and bonded abrasives. Methods for manufacturing abrasive articles include at least partially curing an article that includes a polymer binder precursor, an infrared radiation absorbing dye, and abrasive grains using infrared radiation.Type: GrantFiled: April 3, 2007Date of Patent: September 11, 2012Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventor: Xiaorong You
-
Patent number: 8246701Abstract: Methods of fabricating polycrystalline diamond elements and compacts using sp2-carbon-containing particles are disclosed. In an embodiment, a method of fabricating a polycrystalline diamond element includes mixing a plurality of sp2-carbon-containing particles and a plurality of diamond particles to form a mixture. An amount of the plurality of sp2-carbon-containing particles present in the mixture is effective to increase a thermal stability of the polycrystalline diamond element formed at least partially from the mixture. The method further includes sintering the mixture in the presence of a catalyst material to form the polycrystalline diamond element.Type: GrantFiled: May 26, 2011Date of Patent: August 21, 2012Assignee: US Synthetic CorporationInventor: Michael A. Vail
-
Patent number: 8240405Abstract: A polycrystalline diamond abrasive element, particularly a cutting element, comprises a table of polycrystalline diamond bonded to a substrate, particularly a cemented carbide substrate, along a non-planar interface. The polycrystalline diamond abrasive element is characterized by the nonplanar interface having a cruciform configuration, the polycrystalline diamond having a high wear-resistance, and the polycrystalline diamond having a region adjacent the working surface lean in catalysing material and a region rich in catalysing material. The polycrystalline diamond cutters have improved wear resistance, impact strength and cutter life than prior art cutters.Type: GrantFiled: August 4, 2011Date of Patent: August 14, 2012Assignee: Onesteel Trading Pty Ltd.Inventors: Brett Lancaster, Bronwyn Annette Roberts, Imraan Parker, Roy Derrick Achilles
-
Patent number: 8236075Abstract: An abrasive material is fabricated. The material is made of bamboo charcoal. The charcoal has vascular bundles and abrasive particles are uniformly distributed and fixed on inner surfaces of the vascular bundles. Thus, the abrasive material can be used with self-sharpening for grinding, polishing, lubricating, etc.Type: GrantFiled: July 18, 2009Date of Patent: August 7, 2012Assignee: National Central UniversityInventors: Biing-Hwa Yan, Shin-Min Lee, Jung-Chou Hung
-
Patent number: 8236074Abstract: Methods of manufacturing a superabrasive element are disclosed. In one embodiment, a substrate and a preformed superabrasive volume may be at least partially surrounded by an enclosure and the enclosure may be sealed in an inert environment. Further, the enclosure may be exposed to an elevated pressure and preformed superabrasive volume may be affixed to the substrate. Polycrystalline diamond elements are disclosed. In one embodiment, a polycrystalline diamond element may comprise a preformed polycrystalline diamond volume bonded to a substrate by a braze material. Optionally, such a polycrystalline diamond element may exhibit a compressive stress. Rotary drill bit for drilling a subterranean formation and including at least one superabrasive element are also disclosed.Type: GrantFiled: October 10, 2006Date of Patent: August 7, 2012Assignee: US Synthetic CorporationInventors: Kenneth E Bertagnolli, David P Miess
-
Patent number: 8231698Abstract: The invention is for a polycrystalline diamond abrasive compact comprising a layer of polycrystalline diamond bonded to a cemented tungsten carbide substrate. The polycrystalline diamond defines a plurality of interstices and a binder phase is distributed in the interstices to form binder pools. The polycrystalline diamond is characterized by the presence of a separate tungsten particulate phase in the binder phase, in excess of 0.05 volume % but not greater than 2 volume %, expressed as a % of the total polycrystalline diamond, and the binder phase further containing a low eta-phase, Co3W3C, content as determined by conventional XRD analysis, an XRD peak height of the <511> eta-phase (Co3W3C) peak which is less than 0.06 when expressed as a fraction of the peak height of the <200> cubic cobalt peak. The invention extends to a composition and to a method for manufacturing the polycrystalline diamond abrasive compact.Type: GrantFiled: October 31, 2007Date of Patent: July 31, 2012Inventors: Barbara Mariëlle De Leeuw-Morrison, Cornelis Roelof Jonker, Roger William Nigel Nilen
-
Patent number: 8216326Abstract: A vitrified superabrasive product includes a superabrasive component and a vitrified bond component in which the superabrasive component is dispersed, wherein the vitrified bond component defines pores occupying greater than about 50% of the total volume of the vitrified superabrasive product. The vitrified superabrasive product can be in the form of a grinding tool, such as a grinding wheel. A superabrasive mixture includes a glass powder, a superabrasive grit, a binder and a silicon carbide. The mixture can be in the form of a green body, which is fired under an atmosphere and pressure, and at a temperature sufficient to form a porous vitrified superabrasive product.Type: GrantFiled: May 7, 2009Date of Patent: July 10, 2012Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Rachana D. Upadhyay, Gilles Querel, Pradyumna Gupta, Richard W. J. Hall
-
Patent number: 8206473Abstract: An abrasive composition including vitreous binding material; abrasive material; and a dimensional stabilizing additive (DSA), present in an amount that is from about 1 to about 40 volume percent of the abrasive composition, wherein the dimensionally stabilizing additive is inert to the binding material, and has a Mohs hardness of between 4 and 9, and wherein the abrasive composition does not include hollow sphere fillers. Also included is a method of making an abrasive articles, articles formed thereby; and articles formed from the abrasive compositions.Type: GrantFiled: February 6, 2008Date of Patent: June 26, 2012Assignee: 3M Innovative Properties CompanyInventors: Gary Michael Huzinec, William Francis Koval
-
Patent number: 8206472Abstract: There is provided a fixed abrasive wire having abrasives fixed thereon with a superior fixing strength. The abrasives are fixed on the wire by electroplating in which the wire is subjected to a degreasing step, an acid cleaning step, a rinsing step and an electroplating step sequentially. A plating liquid used in the electroplating step contains a nickel-containing organic acid or a nickel-containing inorganic acid, a leveling agent, and the abrasives. It is a feature that a plated coat being over the top of each of the abrasives has a smaller thickness than a theoretical value.Type: GrantFiled: December 27, 2005Date of Patent: June 26, 2012Assignee: Japan Fine Steel Co., Ltd.Inventors: Yasuhiro Tani, Yukinobu Tokunaga, Kazumasa Tsuchihashi
-
Patent number: 8202334Abstract: The method provides a method of preparing a silicate-containing polishing pad useful for polishing at least one of semiconductor, magnetic and optical substrates. The method includes introducing a feed stream of gas-filled polymeric microelements into a gas jet. The polymeric microelements have varied densities, varied wall thickness and varied particle size. Passing the gas-filled microelements in the gas jet adjacent a Coanda block, the Coanda block having a curved wall for separates the polymeric microelements with Coanda effect, inertia and gas flow resistance. The coarse polymeric microelements from the curved wall of the Coanda block to clean the polymeric microelements. The polymeric microelements collected contain less than 0.Type: GrantFiled: November 12, 2010Date of Patent: June 19, 2012Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: Donna M. Alden, Andrew R. Wank, Robert Gargione, Mark E. Gazze, Joseph K. So, David Drop, Shawn Riley, Mai Tieu Banh
-
Patent number: 8202335Abstract: Methods of manufacturing a superabrasive element and/or compact are disclosed. In one embodiment, a superabrasive volume including a tungsten carbide layer may be formed. Polycrystalline diamond elements and/or compacts are disclosed. Rotary drill bits for drilling a subterranean formation and including at least one superabrasive element and/or compact are also disclosed.Type: GrantFiled: September 7, 2007Date of Patent: June 19, 2012Assignee: US Synthetic CorporationInventors: Craig H. Cooley, Kenneth E. Bertagnolli, Michael A. Vail
-
Patent number: 8191658Abstract: Methods of forming cutting elements for earth-boring tools include providing a barrier material between a first powder and a second powder each comprising diamond grains, and subjecting the powders and barrier material to high temperature and high pressure conditions to form polycrystalline diamond material. The formation of the polycrystalline diamond material is catalyzed, and catalytic material may be hindered from migrating across the layer of barrier material. Cutting elements for use in earth-boring tools include a barrier material disposed between a first layer of polycrystalline diamond material and a second layer of polycrystalline diamond material. Earth-boring tools include one or more such cutting elements for cutting an earth formation.Type: GrantFiled: August 20, 2009Date of Patent: June 5, 2012Assignee: Baker Hughes IncorporatedInventors: Kurtis Schmitz, Danny E. Scott
-
Patent number: 8187351Abstract: The present invention provides a sol of spinous inorganic oxide particles not containing coarse particles, in which particles having extremely homogeneous particles are dispersed in a solvent. An acidic silicic acid is added to a dispersion liquid of core particles to grow core particles, and then again the acidic silicic acid is added at the addition rate 1.2 to 1.8 higher than that in the previous step to prepare a sol of spinous inorganic oxide particles. Then the sol is subjected to centrifugation to remove coarse particles having the diameter of 800 nm or more, thus spinous inorganic oxide particles having peculiar form such as a spinous one being obtained.Type: GrantFiled: November 29, 2007Date of Patent: May 29, 2012Assignee: JGC Catalysts and Chemicals Ltd.Inventors: Kazuhiro Nakayama, Mami Tokunaga, Akira Nakashima, Kazuaki Inoue, Osamu Yoshida, Yoshinori Wakamiya, Hiroyasu Nishida
-
Publication number: 20120122999Abstract: The present invention comprises a compound of a compound of Formula 1 wherein Rf is a C2 to C12 perfluoroalkyl optionally interrupted by one to four moieties each independently selected from the group consisting of —CH2—, —O—, —S—, —S(O)—, and —S(O)2—; n is 1 to 6; m is 0 to 2, provided that m is less than or equal to n. X and Y are each independently O or NR, R is hydrogen or C1 to C6 alkyl; R1, and R2 are each independently C1 to C6 alkyl, optionally containing one or more oxygen atoms and may form a ring selected from the group of piperidine, pyrrolidine, and morpholine; and R3 is O?, (CH2)pC(O)O?, (CH2)pCH(OH)(CH2)SO3?, and (CH2)qSO3?; p is 1 to 4; and q is 2 to 4 which is useful as a surfactant.Type: ApplicationFiled: November 12, 2010Publication date: May 17, 2012Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: PETER MICHAEL MURPHY, Anilkumar Raghavanpillai, Allison Mary Yake
-
Publication number: 20120122382Abstract: The present invention relates to a method for manufacturing a flexible abrasive disc, and to such an abrasive disc. The abrasive disc comprises a backing with an upper side and a lower side. The upper side has an abrasive agent coating for forming a surface layer. In order to form a surface layer as specifically patterned as possible, the backing of each abrasive disc is coated separately. In this manufacturing method, the abrasive agent coating on the upper side of the backing is embossed with an embossing mold specially structured and to be pressed against the backing.Type: ApplicationFiled: November 21, 2011Publication date: May 17, 2012Applicant: Oy KWH Mirka AbInventor: Goran Hoglund
-
Patent number: 8172011Abstract: A method of manufacturing a tool component, which is typically a cutting element or a gauge stone in a rotary drill bit, including a layer of ultra-hard abrasive material bonded to a substrate, the layer of ultra-hard abrasive material comprising a pair of opposed end surfaces, an upper surface defined between the end surfaces, and at least one curved and tapered cutting edge defined at the intersection of the respective end surfaces and the upper surface. The respective cutting edges of the tool component and the respective end surfaces leading to the cutting edges are generally wedge-shaped, the upper surface of the layer following generally the same or a similar profile, at least in the region of the cutting edges.Type: GrantFiled: July 31, 2008Date of Patent: May 8, 2012Inventor: Klaus Tank
-
Patent number: 8172915Abstract: The present invention relates to a method of producing a composite diamond body from powders of diamond particles and powders forming a binder phase comprising cobalt powder having mainly a fcc-structure and a grain size (FSSS) of from about 0.2 to about 2.9 ?m., with a pressing and sintering operation. The present invention also relates to a composite diamond body made according to the method.Type: GrantFiled: May 18, 2009Date of Patent: May 8, 2012Assignee: Sandvik Intellectual Property ABInventors: Malin Mårtensson, Shirishkumar Bhosale, Anand Goswami, Shailesh Prabhune
-
Patent number: 8168554Abstract: The invention relates to a molten ceramic particle, characterized in that it has the following chemical composition in wt % based on oxides and for a total of 100%: 55%<ZrO2+HfO2<70%; 20%<SiO2<30%; 6.5%<MgO<9.5%; Al2O3 in an amount such that the mass ratio MgO/Al2O3 is comprised between 2.4 and 6.6; and less than 0.6% of other oxides.Type: GrantFiled: October 11, 2007Date of Patent: May 1, 2012Assignee: Saint-Gobain Centre de Recherches et d'Etudes EuropeenInventors: Yves Boussant-Roux, Emmanuel Nonnet
-
Publication number: 20120083192Abstract: Homogeneous polishing pads for polishing semiconductor substrates using eddy current end-point detection are described. Methods of fabricating homogeneous polishing pads for polishing semiconductor substrates using eddy current end-point detection are also described.Type: ApplicationFiled: September 30, 2010Publication date: April 5, 2012Inventors: William C. Allison, Diane Scott, Ping Huang, Richard Frentzel, Alexander William Simpson
-
Publication number: 20120079773Abstract: Methods of fabricating polishing pads with end-point detection regions for polishing semiconductor substrates using eddy current end-point detection are described.Type: ApplicationFiled: September 30, 2010Publication date: April 5, 2012Inventors: William C. Allison, Diane Scott, Ping Huang, Richard Frentzel, Alexander William Simpson
-
Patent number: 8147573Abstract: A cutting tip for a drilling tool includes a cemented carbide cutting base, a diamond element supported by the cutting base, and a bonding layer formed between the cutting base and the diamond element in order to bond them. The bonding layer includes diffusion layers and in which one or two or more metals selected from a group consisting of Fe, Ni, Co, Ti, Zr, W, V, Nb, Ta, Cr, Mo, and Hf diffuses into at least one of the diamond or the cement carbide.Type: GrantFiled: October 7, 2009Date of Patent: April 3, 2012Assignee: Mitsubishi Materials CorporationInventors: Kazuo Yamamoto, Tadakazu Ohashi, Akhmadi Wardoyo
-
Patent number: 8137423Abstract: A method of making an abrasive article comprising an abrasive disc (1) of non-woven fibres having a central shaft (3) and a hub (2) securing the shaft (3) to the abrasive disc (1). The method comprising forming the hub (3) by injecting molten thermoplastic material into the abrasive disc (1), and allowing the thermoplastic material to cool and solidify such that the shaft (3) is secured to the abrasive disc (1). The invention provides a simple, economical and effective method of securing a shaft to a disc.Type: GrantFiled: July 18, 2005Date of Patent: March 20, 2012Assignee: 3m Innovative Properties CompanyInventors: Jonathan M. Lise, Jean Le Normand, Gerhard Lohmeier
-
Publication number: 20120047813Abstract: A cutting fluid for processing is revealed. The cutting fluid for wafer processing includes a cutting solvent, a plurality of cutting particles and a surfactant that induces hydrogen bonding. The surfactant that induces hydrogen bonding contains amine functional groups or acid functional groups. The hydrogen-bonding-inducing surfactant is used to form intermolecular hydrogen bonding so as to improve the suspension stability of the cutting particles in the cutting fluid. The surfactant that induces hydrogen bonding will not change the properties of the cutting fluid so that the following processes will not be affected.Type: ApplicationFiled: November 17, 2010Publication date: March 1, 2012Applicant: NATIONAL CENTRAL UNIVERSITYInventors: HENG-KWONG TSAO, CHIA-NAN YUAN
-
Publication number: 20120048625Abstract: A cutting table includes a cutting surface, an opposing surface, a cutting table outer wall, and one or more slots. The cutting table outer wall extends from the circumference of the opposing surface to the circumference of the cutting surface. The slots extend from a portion of the cutting surface to a portion of the cutting table outer wall. The cutting table is leached to form a thermally stable cutting table. One or more slots are positioned in parallel with at least another slot in some embodiments. In some embodiments, the slots are positioned circumferentially around the cutting surface. In some embodiments, at least one slot is backfilled with a backfilling material to increase heat transfer or impact resistance. In some embodiments, the cutting table is coupled to a substrate to form a cutter. The slots are formed either after or during the formation of the cutting table.Type: ApplicationFiled: August 24, 2010Publication date: March 1, 2012Applicant: Varel Europe S.A.S.Inventor: Federico Bellin
-
Publication number: 20120036790Abstract: The invention provides a nonwoven fabric abrasive material, which comprises a reactive inorganic endothermic compound.Type: ApplicationFiled: November 4, 2005Publication date: February 16, 2012Applicant: 3M Innovative Properties CompanyInventor: Michihiro Yamahara
-
Patent number: 8100997Abstract: The present invention relates to a diamond tool and a method of manufacturing the same, wherein multiple abrasive layers are formed through a brazing or electroplating method, thereby improving the performance and service life of the tool. According to the method of the present invention, a plurality of concave portions are formed in a surface of the shank. A bonding paste is coated into the concave portions and abrasives are dispersed in the bonding paste to thereby form a lower abrasive layer. Again, a bonding material is coated on the lower abrasive layer and abrasives are dispersed in the bonding material to thereby form an upper abrasive layer. Then, a heat treatment is executed to fusion-bond the bonding material and abrasives onto the surface of the shank.Type: GrantFiled: February 4, 2005Date of Patent: January 24, 2012Assignee: Shinhan Diamond Industrial Co., Ltd.Inventors: Min-Seok Song, Mun-Seok Park, Sug-Goo Kim, Sun-Jai Lee, Kang-Jun Kim, Kee-Jeong Cheong, Won-Ho Jee, Shin-Kyung Kim
-
Patent number: 8092560Abstract: Since structural portions of a device made of a plurality of materials are different from one another in mechanical hardness, it is very difficult to uniformly lap the structural portions. This is attributable to generation of machining recessions due to differences in lapped amount when large fixed abrasive grains are used, and generation of lapping marks caused by that the dropped abrasive grains rotate. Accordingly, in order to cope with the disadvantage, it is essential to surely grip abrasive grains of small size to a surface of a surface plate.Type: GrantFiled: November 8, 2006Date of Patent: January 10, 2012Assignee: Hitachi, Ltd.Inventors: Hiroshi Inaba, Hiromu Chiba, Xudong Yang, Shinji Sasaki, Nobuto Yasui
-
Patent number: 8083570Abstract: A multilayer chemical mechanical polishing pad is provided, having a polishing layer with a polishing surface, a polishing layer interfacial region parallel to the polishing surface and an outer perimeter; a porous subpad layer with a bottom surface, a porous subpad layer interfacial region parallel to the bottom surface and an outer perimeter; a pressure sensitive adhesive layer; and, a light transmissive window element; wherein the polishing layer interfacial region and the porous subpad layer interfacial region form a coextensive region; wherein the coextensive region secures the polishing layer to the porous subpad layer without the use of a laminating adhesive; wherein the pressure sensitive adhesive layer is applied to the bottom surface of the porous subpad layer; wherein an internal opening extends through the multilayer chemical mechanical polishing pad from the bottom surface to the polishing surface and is bounded by an internal peripheral edge of the porous subpad layer.Type: GrantFiled: October 17, 2008Date of Patent: December 27, 2011Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: Darrell String, Jon William Turley
-
Patent number: 8080071Abstract: Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) comprising a polycrystalline diamond (“PCD”) table including a catalyst material therein that has been implanted with ions (e.g., carbon ions) and/or infiltrated from a host material implanted with carbon ions. In an embodiment, a PDC comprises a substrate and a PCD table bonded to the substrate. The PCD table includes a plurality of bonded diamond grains defining a plurality of interstitial regions. The PCD table includes an upper surface from which a region inwardly extends. At least a portion of the interstitial regions of the region includes a catalyst material disposed therein. At least a portion of the catalyst material may be at least saturated with carbon.Type: GrantFiled: February 27, 2009Date of Patent: December 20, 2011Assignee: US Synthetic CorporationInventor: Michael A. Vail
-
Patent number: 8080074Abstract: Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) and methods of fabricating such PDCs. In an embodiment of a “two-step” manufactured PDC, a PDC includes a substrate and a pre-sintered polycrystalline diamond (“PCD”) table bonded to the substrate. The pre-sintered PCD table includes bonded diamond grains defining interstitial regions. At least a portion of the interstitial regions include at least one material disposed therein selected from a silicon-cobalt alloy, silicon carbide, cobalt carbide, or a mixed carbide of silicon and cobalt. The pre-sintered PCD table lacks an intermediate contaminant region therein that includes at least one type of fabrication by-product generated during the fabrication of the pre-sintered PCD table.Type: GrantFiled: November 14, 2008Date of Patent: December 20, 2011Assignee: US Synthetic CorporationInventor: Mohammad N. Sani
-
Patent number: 8070842Abstract: The present invention provides a dental polishing article having excellent polishability, which can polish dental composite resin, porcelain, dental restorative and prosthetic materials and teeth at a low cost, conveniently in a short time. More specifically, the present invention provides a dental polishing article which comprises a polishing portion formed by compounding polishing grains in an elastomer binder, and the polishing portion further comprising spherical resin particles.Type: GrantFiled: May 10, 2006Date of Patent: December 6, 2011Assignee: Kabushiki Kaisha ShofuInventors: Syuji Sonoi, Osamu Asao
-
Publication number: 20110289855Abstract: An abrasive element comprises a body of crystalline abrasive material. The body has an array of cutting elements formed of crystalline abrasive material which projects from a surface of the body. The shape, size and form of the projections is controlled in the production process. The body may be a natural or synthetic crystal. The body may be a film formed by deposition. The body may be diamond or cubic boron nitride. The body may be monocrystalline or polycrystalline. The projections may be aligned along a crystallographic plane or planes.Type: ApplicationFiled: December 18, 2009Publication date: December 1, 2011Inventors: Dragos Axinte, Paul Butler-Smith, Mark Daine
-
Patent number: 8066786Abstract: A coated abrasive disc has a backing comprising a synthetic woven fabric having a first major surface with a presize disposed thereon and a second major surface opposite the first major surface and having a backsize disposed thereon. The presize comprises a reaction product of a curable presize precursor comprising: at least one epoxy resin prepared by reaction of epichlorohydrin with at least one of bisphenol A or bisphenol F, polyfunctional (meth)acrylate, novolac resin, imidazole epoxy cure catalyst, dicyandiamide, and a photoinitiator. A glass woven fabric permeated with an at least partially crosslinked saturant is secured to the second major surface by a thermoplastic laminating adhesive disposed between the second major surface of the synthetic woven fabric and the glass woven fabric. A method of making the same is also disclosed.Type: GrantFiled: January 23, 2008Date of Patent: November 29, 2011Assignee: 3M Innovative Properties CompanyInventors: Steven J. Keipert, Jaime M. Manalo
-
Patent number: 8057562Abstract: 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 stable ultra-hard polycrystalline region can be positioned along all or a portion of an outside surface of the body, or can be positioned beneath a body surface. The thermally stable ultra-hard polycrystalline region can be provided in the form of a single element or in the form of a number of elements. The thermally stable ultra-hard polycrystalline region can be formed from precursor material, such as diamond and/or cubic boron nitride, with an alkali metal catalyst material. The mixture can be sintered by high pressure/high temperature process.Type: GrantFiled: December 8, 2009Date of Patent: November 15, 2011Assignee: Smith International, Inc.Inventor: Stewart N. Middlemiss
-
Patent number: 8052765Abstract: Contoured solid polycrystalline superabrasive material such as twist drill tips and endmill flank segments can be formed by preparing a precursor mold having a plurality of shaped openings each corresponding to a predetermined shape. A specially prepared charge feed can be placed into the shaped openings to form a charged precursor. The charge feed can include a substantially homogeneous mixture of superabrasive source particulates, sintering binder, and optional inorganic bonding medium. A loaded reaction cup-assembly including the charged precursor can be subjected to a pressure, temperature and time sufficient for sintering and formation of the contoured polycrystalline superabrasive material. Reduced finishing steps and increased tailorability of grade and quality of final polycrystalline products can be readily achieved.Type: GrantFiled: April 3, 2007Date of Patent: November 8, 2011Inventors: H. Sam Cho, Lee bong Kyu, Kim yong Il, Han Kyung Ryul, Song Ki Jeon
-
Patent number: 8046934Abstract: The present invention concerns a convective system for a dryer installation for a passing web, more particularly paper. The convective system 7 is an assembly of an exterior casing 13 for suction of combustion products with opening 14 towards the web, with a first 15 and second 16 suction ducts sucking the combustion products into the convective system 7. The combustion products coming from the first suction duct 15 are guided through the exterior casing 13 to a mixing and blowing device 17. Cold air 18 is mixed in this mixing and blowing device 17 with the combustion products 19, resulting in a gas mixture with lower temperature 20. The convective system 7 also has an internal casing 21 inside the external casing 13. This internal casing 21 has at least one opening towards the web 22 and has also openings 34 allowing gas flow from the mixing device 17 to the internal casing 21 of said gas mixture 20. Under the internal casing 21, there is also a blowing duct 23.Type: GrantFiled: January 24, 2007Date of Patent: November 1, 2011Assignees: NV Bekaert SA, Bekaert Combustion Technology B.V.Inventor: Patrick Lenoir
-
Patent number: 8043145Abstract: CMP pad dressers with superabrasive particles oriented into an attitude that controls CMP pad performance, and methods associated therewith are disclosed and described. The controlled CMP pad performance may be selected to optimize CMP pad dressing rate and dresser wear.Type: GrantFiled: January 16, 2009Date of Patent: October 25, 2011Inventor: Chien-Min Sung
-
Patent number: 8043392Abstract: The mixture of molten alumina-zircon grains has the following chemical composition in percentage by weight to give 100%: 40-45.5% ZrO+HfO2; 46-58% Al2O3; 0-10% additive; <0.8% SIO2 and <1,2% impurities. The mixture is characterised in that the degree of impurity-containing grains is less than 2% and the nodule concentration measured on the section of any grain of the mixture is greater than 500 nodules per mm2 in at least 50% of cases.Type: GrantFiled: June 23, 2005Date of Patent: October 25, 2011Assignee: Saint Gobain Centre de Recherches et d'Etudes EuropeanInventor: Samuel Marlin
-
Publication number: 20110252710Abstract: Abrasive tools contain abrasive grains oriented in an array according to a non-uniform pattern having an exclusionary zone around each abrasive grain, and the exclusionary zone has a minimum dimension that exceeds the maximum diameter of the desired grit size range for the abrasive grain. Methods for designing such a self-avoiding array of abrasive grain and for transferring such an array to an abrasive tool body are described.Type: ApplicationFiled: June 28, 2011Publication date: October 20, 2011Applicant: SAINT-GOBAIN ABRASIVES, INC.Inventors: Richard W. J. Hall, Jens M. Molter, Charles A. Bateman
-
Patent number: 8038749Abstract: A composition for removing a photoresist layer and a method for using it are disclosed. The composition comprises a chemical portion which includes water and chemical constituents dissolving or softening the photoresist layer and a mechanical portion which is abrasive particles. Using the composition and the method according to the present invention can decrease the conventional two steps of removing a photoresist layer process to one step, thereby simplifying the procedure, shortening the removing time and reducing the cost. The chemical constituents in the composition according to the present invention are of low toxicity and flammability and the amount used is small, which makes it more friendly with the environment and decreases the expense of disposing the waste.Type: GrantFiled: May 12, 2006Date of Patent: October 18, 2011Assignee: Anji Microelectronics (Shanghai) Co., Ltd.Inventors: Shumin Wang, Chris Chang Yu
-
Patent number: 8038751Abstract: A coated abrasive product includes a particulate material containing green, unfired abrasive aggregates having a generally spheroidal or toroidal shape, the aggregates formed from a composition comprising abrasive grit particles and a nanoparticle binder. Free abrasive products, bonded abrasive products, and the particulate material also contain aggregates.Type: GrantFiled: January 23, 2008Date of Patent: October 18, 2011Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventor: Shelly C. Starling
-
Patent number: 8034136Abstract: In one embodiment of the present invention, a method of fabricating a superabrasive article is disclosed. A mass of unsintered diamond particles may be infiltrated with metal-solvent catalyst from a metal-solvent-catalyst-containing material to promote formation of a sintered body of diamond grains including interstitial regions. At least a portion of the interstitial regions may also be infiltrated with silicon from a silicon-containing material. The silicon reacts with the sintered body to form silicon carbide within a portion of the interstitial regions.Type: GrantFiled: November 9, 2007Date of Patent: October 11, 2011Assignee: US Synthetic CorporationInventor: Mohammad N. Sani
-
Patent number: 8021449Abstract: A surface-modified abrasive grain includes an abrasive grain as a substrate, and a film on the abrasive grain that includes a relatively hydrophilic silane component and a relatively hydrophobic silane component. The film can be a single film layer or multiple film layers, wherein a film layer most proximal to the abrasive grain has a predominately hydrophilic silane component, and a film layer more distal to the abrasive grain includes predominately a relatively hydrophobic silane component. Coated abrasive products and bonded abrasive products include the surface-modified abrasive grains.Type: GrantFiled: April 16, 2009Date of Patent: September 20, 2011Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Anuj Seth, Ying Cai
-
Patent number: 8016579Abstract: A superabrasive grain setting apparatus for arranging superabrasive grains on a surface of a manufacturing mold used in manufacturing a grinding tool includes a grip and raising mechanism for gripping the mold in a horizontal state and for turning the mold to a vertical state. A six-axis control robot is composed of a base arm mechanism with three controlled axes and a wrist unit with three controlled axes attached to the base arm mechanism. A superabrasive grain supply device has a grain storage for storing the superabrasive grains and a grain separation mechanism for separating the superabrasive grains in the grain storage one by one to a suction position. A suction nozzle is detachably mounted on an endmost arm of the robot and provided with a bent nose portion for drawing a grain of superabrasive to a nozzle end thereof at the suction position.Type: GrantFiled: November 12, 2008Date of Patent: September 13, 2011Assignee: Toyoda Van Moppes Ltd.Inventors: Sadao Sakakibara, Kodo Kobayashi, Hiroyasu Shimizu, Kazuhiko Sugita
-
Patent number: 8016054Abstract: A polycrystalline diamond abrasive element, particularly a cutting element, comprises a table of polycrystalline diamond bonded to a substrate, particularly a cemented carbide substrate, along a non-planar interface. The polycrystalline diamond abrasive element is characterised by the nonplanar interface having a cruciform configuration, the polycrystalline diamond having a high wear-resistance, and the polycrystalline diamond having a region adjacent the working surface lean in catalysing material and a region rich in catalysing material. The polycrystalline diamond cutters have improved wear resistance, impact strength and cutter life than prior art cutters.Type: GrantFiled: May 27, 2004Date of Patent: September 13, 2011Inventors: Brett Lancaster, Bronwyn Annette Roberts, Imraan Parker, Roy Derrick Achilles
-
Patent number: 8011999Abstract: A polishing pad with first plural concave portions regularly allocated with prescribed spacing or/and a groove formed on the surface of the polishing pad; and a second concave portion randomly allocated without corresponding to the first plural concave portions or/and the groove formed on the surface of the polishing pad.Type: GrantFiled: July 9, 2007Date of Patent: September 6, 2011Assignee: Fujitsu Semiconductor LimitedInventors: Hiromasa Nagase, Akio Yokofuke, Hiroshi Misawa
-
Patent number: 8012224Abstract: A polishing composition includes a copolymer and an abrasive. The copolymer has a constitutional unit expressed as the following formula (I) and at least one of constitutional units expressed as the following formulae (II) to (IV). Methoxypolyethylene glycol methacrylate etc. are used as monomers for forming the constitutional unit of the formula (I), stearyl methacrylate etc. are used as monomers for forming the constitutional unit of the formula (II), polypropylene glycol methacrylate etc. are used as monomers for forming the constitutional unit of the formula (III), and styrene etc. are used as monomers for forming the constitutional unit of the formula (IV).Type: GrantFiled: November 17, 2010Date of Patent: September 6, 2011Assignee: Kao CorporationInventors: Masahiko Suzuki, Yuichi Homma, Yukiko Yamawaki
-
Patent number: 8007551Abstract: The super finishing stone has such a shape that a width of an abrasive surface in a direction perpendicular to a radial direction becomes gradually narrower from outside to inside in the radial direction, when the raceway surface and the abrasive surface in contact with the raceway surface are seen at a plurality of sections perpendicular to the radial direction of the object to be worked, so that the abrasive surface and the raceway surface in contact with the raceway surface may intersect with each other at a constant angle at opposite side edges of the abrasive surface.Type: GrantFiled: September 13, 2007Date of Patent: August 30, 2011Assignee: Jtekt CorporationInventors: Eiji Kaneuchi, Takeshi Takahashi, Yoshihiro Oono, Takeshi Kimura
-
Patent number: 8002858Abstract: A cutting segment for a cutting tool used for cutting or drilling brittle workpieces, such as stone, brick, concrete and asphalt, a method for manufacturing the segment, and a cutting tool comprising the segment are disclosed. The segment comprises layers of diamond particles and two kinds of plate-shaped metal matrix layers comprising soft and hard metal matrix layers having different ductility. The plate-shaped metal matrix layers are arranged perpendicular to a cutting surface while being parallel to a cutting direction, and are alternately stacked perpendicular to the cutting direction. The layers of diamond particles are suitably arranged in the plate-shaped soft and hard metal matrix layers. The segment and the cutting tool comprising the same have excellent cutting ability, and the manufacturing process thereof can be simplified, thereby remarkably enhancing productivity.Type: GrantFiled: April 14, 2006Date of Patent: August 23, 2011Assignees: EHWA Diamond Industrial Co., Ltd., General Tool, Inc.Inventors: Soo-Kwang Kim, Hee-Dong Park