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| Number | Title | Issue Date |
| 7404399 | Diamond tool, synthetic single crystal diamond and method of synthesizing single crystal diamond, and diamond jewelry Various types of diamond tools are provided by utilizing the fact that a synthetic single crystal diamond for use in a tool having a nitrogen content of 3 ppm or less exhibits an enhanced hardness in a (100) plane in a direction and simultaneously the reductio... | 07/29/2008 |
| 7198043 | Method for extending diamond tool life in diamond machining of materials that chemically react with diamond The present invention provides a method for extending diamond tool life in diamond machining of materials that chemically react with the diamond tool in which the surface electric potential of the workpiece is adjusted or tuned to be adequate to inhibit the chemical... | 04/03/2007 |
| 7153201 | Oval sharpening rod having interrupted diamond coated surface and process of manufacturing same An oval rod sharpener having an interrupted diamond abrasive surface having plurality of holes forming wells for collecting filings during sharpening. The abrasive surface is formed by multiple layers of micron sized diamonds, such as monocrystalline diamonds. A pla... | 12/26/2006 |
| 7147548 | Grinding and cutting head A grinding and cutting head adapted to be mounted with a rotating disk of a grinding and cutting machine. The head includes a plate having a first surface which mounts at least one carrier. The carrier includes a vertical slot along one side which extends upwardly f... | 12/12/2006 |
| 6915796 | Superabrasive wire saw and associated methods of manufacture A superabrasive wire saw having a plurality of individual coated superabrasive particles attached to a wire with an organic binder is disclosed and described. The superabrasive particle can be coated with a solidified coating of a molten braze alloy that is chemical... | 07/12/2005 |
| 6843242 | Method for consolidating natural stone blocks A method is described for repairing and consolidating a natural stone block (1), with internal fractures and structural discontinuities, in which around the block (1) a coating (2, 3, 4) is applied that wraps the block (1) below and along... | 01/18/2005 |
| 6475067 | Dry method of concrete floor restoration A dry method of concrete floor or concrete surface restoration uses the process of grinding a concrete surface to be resurfaced while extracting and retaining dust during the grinding process. The grinding process is repeated each time using finer grindin... | 11/05/2002 |
| 6397832 | Diamond cutting method and new-cut diamond shape Disclosed are a new diamond cutting method and a diamond shape or proportion giving an increased brightness and different brilliant colors to the cut jewel. A piece of diamond having a crown or bezel and a pavilion converging up and down from its girdle i... | 06/04/2002 |
| 6312324 | Superabrasive tool and method of manufacturing the same A superabrasive tool such as a superabrasive grindstone (101; 102), a superabrasive dresser (103; 104; 105) or a superabrasive lap surface plate (106) includes a base (20) of steel and a superabrasive layer (10) formed on the base (20). The superabrasive ... | 11/06/2001 |
| 6308700 | Process and manufacturing of a rotary diamond dresser for trueing and dressing of industrial grinding wheels The invention applies to a diamond dresser consisting of a rotary symmetric body on whose circumference and/or face is applied randomly distributed diamond particles. It is the task of the invention to use simple means to reduce the abrasion on the circum... | 10/30/2001 |
| 6176888 | Composite cutting body, containing diamond particles and methods for its production A composite cutting tool for use in the abrasive processing of hard substrates comprising cutting elements wherein diamond particles in a predominantly metallic binder material are agglomerated and sintered during an individual molding process of each of ... | 01/23/2001 |
| 5785039 | Single-crystalline diamond tip for dresser and dresser employing the same A diamond dresser having a long life and excellent wear resistance includes at least one diamond tip. An end surface of the diamond tip perpendicular to its longitudinal direction is formed by a {211} crystal plane. Two opposite side surfaces of the diamo... | 07/28/1998 |
| 5702492 | Semiconductor wafer hubbed saw blade and process for manufacture of semiconductor wafer hubbed saw blade In a plating process for constructing a nickel/embedded abrading particle saw blade on a saw blade substrate, the step of plating abrading particles onto and within the supporting copper substrate is disclosed. The beveled edge of a circular aluminum saw ... | 12/30/1997 |
| 5645617 | Composite polycrystalline diamond compact with improved impact and thermal stability A compact blank for use in operations that require improved thermal stability, impact strength, and abrasion resistance is disclosed. The compact includes a substrate formed of tungsten carbide or other hard material with multiple abrasive diamond crystal... | 07/08/1997 |
| 5611326 | Diamond-set insert carrier tool for automatic and manual machines of dressing, smoothing and polishing type for the stone, ceramic and tile industries A diamond-set insert carrier tool for dressing, chamfering, smoothing or polishing machines which comprises a body or support of thermoplastic material, in the active surface of which there are provided cavities able to receive diamond-set abrasive insert... | 03/18/1997 |
| 5584045 | Polycrystalline diamond tool and method for producing same Polycrystalline diamond has non-uniform impurity concentration along the direction of thickness. The diamond near the rake surface has a lower impurity concentration. The diamond near the fixation surface has a higher impurity concentration. The diamond w... | 12/10/1996 |
| 5535732 | Diamond-studded tool for dressing grinders, with a cone-shaped rolling means, on an oblique axis Tool (10) with diamonds (35) (35') (36) for dressing grinders (90) having a roller (11) rotating on a supporting shank (20) round an axis that intersects the axis of the shank (20) at an angle of 45°, with operative areas (30) (31) having one or more dia... | 07/16/1996 |
| 5387447 | Method for producing uniform cylindrical tubes of CVD diamond The present invention provides a method for forming uniform CVD diamond coatings on a substrate wherein diamond is deposited on a plurality of substrates which are rotated in unison during the coating process to provide for more uniform radial growth. An ... | 02/07/1995 |
| 5247923 | Method of forming a diamond drill bit element using laser trimming A method of forming a substantially hemispherically shaped diamond cutting element for use in a rotary drill bit is provided. A natural diamond is obtained and then cleaved to form a planar surface. A portion of the diamond is trimmed in the shape of a fi... | 09/28/1993 |
| 5179931 | Working gemstones In order to brute a gemstone, the gemstone 6 is rotated about an axis and is ground with a small bruting crown 1 rotating about a parallel axis. In the peripheral working face of the bruting crown 1 are set grinding diamonds or stones 4 each of which subt... | 01/19/1993 |
| 5133792 | Process for refining diamonds The invention teaches a deep boiling process for refining diamonds, be they raw or cut and polished. The process provides for initially precleaning the diamonds with solvents including alcohol, acetone, sulfuric acid, hydrogen peroxide, and/or water, to r... | 07/28/1992 |
| 5133332 | Diamond tool A diamond tool, e.g., cutting tool, dresser, wire drawing die, etc., having excellent wear resistance, heat resistance and oxidation resistance and with an improved tool life is provided, which is mainly composed of a synthetic diamond single crystal cont... | 07/28/1992 |
| 5065733 | Dressing tool for form dressing of a grinding wheel A dressing tool for form dressing of a grinding wheel comprising a cylindrical body 22 having an open groove 32 formed at one end; said open groove 32 adapted for insertion, seating, and clamping of a chisel-edge diamond 36; said chisel-edge diamond being... | 11/19/1991 |
| 5054246 | Abrasive compacts An abrasive compact is provided which has a plurality of recesses which may take the form of grooves or holes formed in a major surface thereof. The recesses contain no solid material and serve as crack arrester formations.... | 10/08/1991 |
| 4989578 | Method for forming diamond cutting elements for a diamond drill bit A method of forming hemispherically shaped diamond cutting elements for use in a rotary drill bit is provided. The method includes identifying a cleaving plane in a diamond and a perpendicular axis, polishing the diamond to form a series of truncated cone... | 02/05/1991 |
| 4892082 | Dressing roll and method for producing the same A dressing roll comprises a revolving circumferential surface, in particular two conical circumferential surfaces (12, 13) intersecting each other along an outer circumferential line (14). The circumferential surface is garnished with diamonds. In order t... | 01/09/1990 |
| 4884476 | Method for the preparation of a diamond-clad machining tool A diamond-clad machining tool is prepared by the steps of (a) forming a film of diamond of 10 to 1000 μm thickness by the method of vapor-phase deposition on the surface of a temporary substrate of, e.g., silicon, (b) bonding the diamond film as borne by... | 12/05/1989 |
| 4875460 | Grinding wheel dressing apparatus There is provided an improvement in a grinding wheel dressing apparatus of the type presenting opposing cutting tools to the side faces of the grinding wheel. A base supports dual towers having slide blocks carrying dressing tools mounted for controlled r... | 10/24/1989 |
| 4858706 | Diamond drill bit with hemispherically shaped diamond inserts A rotary drill bit is provided which uses a plurality of hemispherically shaped diamond cutting elements, each having a cleaved, planar face. The diamonds are disposed in the bit such that the planar faces provide a plurality of knife-like cutting surface... | 08/22/1989 |
| 4836178 | Inset for a tool The invention relates to abrasive tools such as a cutting tool for a mining machine. Located in a socket 18 of the tool is a cutting insert comprising an elongate pin 22 having a bottom conical end 24 located in the recess and a top control portion 26 to ... | 06/06/1989 |
| 4805586 | Dressing tool for grinding wheels A dressing tool for grinding wheels includes a base body and a diamond coat which is formed of diamond grains embedded in a metallic bond. The diamond grains are artificially roughened so that their surface area is significantly enlarged and are arranged ... | 02/21/1989 |
| 4764434 | Diamond tools for rock drilling and machining A polycrystalline diamond tool comprising a diamond layer is bonded to a support body having a complex, non-plane geometry by means of a thin more than 3 μm continuous layer of a refractory material applied by PVD or CVD technique.... | 08/16/1988 |
| 4748612 | Arrangement for cutting information into a record carrier made of metal, particulary copper An arrangement is disclosed for cutting information into a record carrier made of metal, particularly of copper by means of a diamond, with the diamond body being adjusted for cutting under a canting angle and being ground in such a manner that, deviating... | 05/31/1988 |
| 4731296 | Diamond-coated tungsten carbide-base sintered hard alloy material for insert of a cutting tool A diamond-coated tungsten carbide-base sintered hard alloy material for inserts of cutting tools, which has greatly improved bond strength or degree of bonding of the diamond coating layer to the matrix and therefore is capable of exhibiting excellent cut... | 03/15/1988 |
| 4726718 | Multi-component cutting element using triangular, rectangular and higher order polyhedral-shaped polycrystalline diamond disks A diamond cutter for use in a drill bit having a geometric size and shape normally characterized by unleached diamond product, such as STRATAPAX diamond cutters, can be fabricated by assembling a plurality of prefabricated leached polycrystalline diamond ... | 02/23/1988 |
| 4714385 | Polycrystalline diamond and CBN cutting tools A cutting tool comprised of a polycrystalline layer of diamond or cubic boron nitride integrally adhered to a recessed edge portion of a cemented carbide substrate structure, said layer having a tool nose of a given radius joining two substantially straig... | 12/22/1987 |
| 4702649 | Polycrystalline diamond and CBN cutting tools A cutting tool comprised of an annular polycrystalline layer of diamond or cubic boron nitride integrally adhered to an annular recess in an upper peripheral portion of an integral cemented carbide substrate structure, said layer having a round cutting ed... | 10/27/1987 |
| 4643161 | Method of machining hard and brittle material An ultramicrotome diamond tool is provided with a diamond knife blade having first and second planar surfaces which intersect to define a cutting edge and a shank for holding the knife blade. In one embodiment of the ultramicrotome diamond tool the cuttin... | 02/17/1987 |
| 4608226 | Method of forming a diamond tooth insert for a drill bit and a diamond cutting element formed thereby An improved bond between diamond and a metallic matrix can be achieved by hot pressing the metallic matrix onto a cleaned polycrystalline diamond (PCD) element. The PCD is degreased and then maintained substantially free from subsequent oxidation. The cle... | 08/26/1986 |
| 4605343 | Sintered polycrystalline diamond compact construction with integral heat sink A sintered polycrystalline diamond compact having an integral metallic heat sink bonded to and covering at least the outer diamond surface is used to increase compact life when the compact is used for material removal without a fluid coolant.... | 08/12/1986 |
