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| Number | Title | Issue Date |
| 7485278 | Method for making silicon carbide whiskers A ceramic composite made by compacting a starting powder blend. The composite includes between about 50 volume percent and about 99 volume percent of a ceramic matrix; and between about 1 volume percent and about 50 volume percent as-processed silicon carbide whiske... | 02/03/2009 |
| 7455918 | Alumina coating, coated product and method of making the same A coated body that includes a substrate and a coating scheme on the substrate. The coating scheme on the substrate wherein the coating scheme includes an alpha-alumina coating layer that exhibits a platelet grain morphology at the surface of the alpha-alumina coatin... | 11/25/2008 |
| 7431747 | Cutting tool and method of reducing the width of wear mark on a cutting tool The invention relates to a cutting tool made of ceramics, cermet or cemented carbide and including a rake face, a flank face and a cutting edge at the intersection of rake face and flank face, as well as a multi-layered wear resisting coating including a layer which... | 10/07/2008 |
| 7429152 | Uncoated cutting tool using brazed-in superhard blank An uncoated cutting tool that comprises a body containing a pocket. A polycrystalline cubic boron nitride blank has a cutting tip. The blank is brazed into the pocket using a braze alloy whereby there is a braze joint between the body and the polycrystalline cubic b... | 09/30/2008 |
| 7402540 | Ceramic body containing alumina and boron carbide A ceramic body that includes between about 15 volume percent and about 35 volume percent of a boron carbide irregular-shaped phase, and at least about 50 volume percent alumina, and the ceramic body has a fracture toughness (KIC, 18.5 Kg Load E&C) greater... | 07/22/2008 |
| 7381016 | Uncoated cutting tool using brazed-in superhard blank An uncoated cutting tool that comprises a body containing a pocket. A polycrystalline cubic boron nitride blank has a cutting tip. The blank is brazed into the pocket using a blaze alloy whereby there is a braze joint between the body and the polycrystalline cubic b... | 06/03/2008 |
| 7375044 | Process for making a ceramic body containing alumina and boron carbide A process for making a ceramic body that includes the following steps: providing a starting powder mixture, the starting powder mixture comprises between about 15 volume percent and about 35 volume percent boron carbide powder and at least about 50 volume percent al... | 05/20/2008 |
| 7368406 | Whisker-reinforced ceramic containing aluminum oxynitride and method of making the same A ceramic body, as well as a method for making the same, wherein the ceramic body contains aluminum oxynitride and whiskers, (and optionally) one or more of titanium carbonitride, and/or alumina, and/or zirconia, and/or other component(s). ... | 05/06/2008 |
| 7357697 | Superhard material article of manufacture The invention relates to abrasive water jet systems comprising an abrasive water jet mixing tube having a longitudinal bore lined with a superhard material, including such systems which use cubic boron carbide (CBN), diamond, or other materials with a hardness great... | 04/15/2008 |
| 7335615 | Method of machining a workpiece using a ceramic cutting insert including alumina and boron carbide A method of machining a workpiece including the steps of providing a workpiece; providing a ceramic cutting insert having a rake surface and a flank surface wherein the rake surface and the flank surface intersect to form a cutting edge and the ceramic cutting inser... | 02/26/2008 |
| 7309673 | SiAlON ceramic and method of making the same A SiAlON ceramic body made from a starting powder mixture that includes silicon nitride powder and one or more powders that provide aluminum, oxygen, nitrogen, and two selected rare earth elements to the SiAlON ceramic body wherein the selected rare earth elements a... | 12/18/2007 |
| 7309475 | Whisker-reinforced ceramic containing aluminum oxynitride and method of making the same A process of making aluminum oxynitride powder including the steps of: forming a powder mixture by mixing alumina powder and aluminum nitride powder according to the following formula: ((4−x)/3) alumina and x aluminum nitride wherein x is in mole percent and range... | 12/18/2007 |
| 7262145 | Whisker-reinforced ceramic containing aluminum oxynitride and method of making the same A ceramic body, as well as a method for making the same, wherein the ceramic body contains aluminum oxynitride and whiskers, (and optionally) one or more of titanium carbonitride, and/or alumina, and/or zirconia, and/or other component(s). ... | 08/28/2007 |
| 7223709 | Method of making a SiAION ceramic A method of making a SiAlON ceramic body that includes a two phase composite comprising an alpha prime SiAlON phase and a beta prime SiAlON phase, the method includes the steps of: providing a starting powder that comprises at least about 70 weight percent silicon n... | 05/29/2007 |
| 7217674 | Alumina-boron carbide ceramics and methods of making and using the same A ceramic body, as well as a method of making the ceramic body, wherein in one aspect a hot-pressing method is used to produce the ceramic body. In another aspect, a sintering to full density method is used to produce the ceramic body. The hot-pressed ceramic body c... | 05/15/2007 |
| 7189031 | Toolholder with insert clamp and method for the same A toolholder has an insert clamp in the form of a lever that urges the top of a cutting insert into the pocket of the toolholder. The lever may be spring biased against the insert and may also be dynamically activated by rotation of the toolholder. Additionally, the... | 03/13/2007 |
| 7163657 | Cemented carbide body containing zirconium and niobium and method of making the same A sintered cemented carbide body (e.g., a cutting tool) and a method of making the same. The sintered cemented carbide body includes tungsten carbide, a binder phase of at least one metal of the iron group or an alloy thereof, and one or more solid solution phases. ... | 01/16/2007 |
| 7156006 | Method and assembly for rotating a cutting insert during a turning operation and inserts used therein A cutting insert rotated about its axis may be utilized during a metalworking operation and applied against the rotating workpiece to enhance tool performance. A method, including an assembly with a rotatable insert mounted to a toolholder may be utilized to achieve... | 01/02/2007 |
| 7094717 | SiAlON containing ytterbium and method of making A method for making a crystallized ceramic body containing a two phase composite comprising an alpha prime SiAlON phase that contains ytterbium and a beta prime SiAlON phase, the process includes the steps of: blending together a starting powder mixture that upon de... | 08/22/2006 |
| 7049256 | SiAlON containing ytterbium and method of making A SiAlON ceramic body made from a starting powder mixture that includes silicon nitride powder, and one or more powders that provide aluminum, oxygen, nitrogen and ytterbium to the SiAlON ceramic. The SiAlON ceramic body includes a two phase composite comprising alp... | 05/23/2006 |
| 7008150 | Twist drill for drilling, a drill with a cutting insert, and a replaceable cutting insert for a twist drill On a drill with a base body and a replaceable cutting insert, the cutting insert lies in a receptacle that runs through the base body at a right angle to the latter's longitudinal axis and is open toward the drill tip, whereby the cutting insert is in contact by mea... | 03/07/2006 |
| 6998173 | Cemented carbide tool and method of making A coated cemented carbide tool, and a method for making the same, wherein the as-sintered substrate is formed by sintering in an atmosphere having at least a partial pressure and for a part of the time a nitrogen partial pressure. ... | 02/14/2006 |
| 6988858 | Oxidation-resistant cutting assembly A cutting assembly that includes a tool holder that contains a pocket therein. A shim and/or pocket insert along with a cutting insert are within the pocket of the tool holder. The shim may present an oxidation-resistant surface. Exemplary materials for the shim inc... | 01/24/2006 |
| 6986866 | Method and apparatus for cross-hole pressing to produce cutting inserts A method and apparatus for the cross-hole pressing of cutting inserts is disclosed whereby a green part is fabricated using metallurgical powder and an opening is imparted within the green part by placing the metallurgical powder about an oval-shaped core rod. Using... | 01/17/2006 |
| 6964933 | SiAlON containing ytterbium and method of making A SiAlON material that includes a two phase composite of an alpha prime SiAlON phase and a beta prime SiAlON phase. The alpha prime phase contains ytterbium. The alpha prime SiAlON phase being present in an amount between about 25 weight percent and about 85 weight ... | 11/15/2005 |
| 6924454 | Method of making an abrasive water jet with superhard materials Methods for making abrasive water jet mixing tubes with superhard materials are presented. Also presented are methods for making a tubular elongate superhard material bodies. ... | 08/02/2005 |
| 6908688 | Graded composite hardmetals A multiple-region hardmetal tool piece. The tool piece includes a hardmetal body including a hard particle component and a binder; an additional body, the additional body including a hardmetal body having a hard particle component and a binder; a metal body or a cer... | 06/21/2005 |
| 6905992 | Ceramic body reinforced with coarse silicon carbide whiskers and method for making the same A ceramic composite made by compacting a starting powder blend. The composite includes between about 50 volume percent and about 99 volume percent of a ceramic matrix; and between about 1 volume percent and about 50 volume percent as-processed silicon carbide whiske... | 06/14/2005 |
| 6890655 | Diamond coated cutting tool and method for making the same A diamond coated cutting tool that has a treated substrate and a diamond coating thereon. In the process of making the substrate, the sintered substrate is re-sintered to form a re-sintered substrate and the re-sintered substrate is chemically treated to remove coba... | 05/10/2005 |
| 6884499 | Nanolayered coated cutting tool and method for making the same A nanolayered coated cutting tool that includes a substrate that has a surface with a coating on the surface thereof. The coating comprises a plurality of coating sets of alternating nanolayers of titanium nitride and titanium aluminum nitride wherein each coating s... | 04/26/2005 |
| 6877406 | Cutting tool, in particular for machining piston rings and method for machining piston rings Cutting tool (1) with a cutting insert (3), on the front edge (14) of which there is a first major cutting edge (15) and an approximately U-shaped indentation (18) that interrupts said first major cutting edge (15), whereby ... | 04/12/2005 |
| 6866921 | Chromium-containing cemented carbide body having a surface zone of binder enrichment A coated cemented (binder alloy, e.g., cobalt-chromium alloy) tungsten carbide cutting insert that comprises a substrate and a coating. The substrate contains at least about 70 weight percent tungsten and carbon, between about 3 weight percent and about 12 weight pe... | 03/15/2005 |
| 6824225 | Embossed washer A rotatable cutting bit, and rotatable cutting bit—bit holder assembly and washer that have increased wear resistance characteristics. The assembly incorporates a new holding washer design that has improved rotational characteristics between the cutter bit and top... | 11/30/2004 |
| 6790497 | Superhard material article of manufacture The invention relates to abrasive water jet systems including an abrasive water jet mixing tube having a longitudinal bore lined with a superhard material, including such systems which use cubic boron carbide (CBN), diamond, or other materials with a hardness greate... | 09/14/2004 |
| 6786557 | Protective wear sleeve having tapered lock and retainer A cutting tool assembly including a protective wear sleeve that is fixed in the cavity of a bit holder by a tapered wedge portion that is compressed in a correspondingly tapered portion of the bit holder cavity and an accompanying retainer both combine affix the wea... | 09/07/2004 |
| 6780116 | Wear resistant nail manufacturing tool inserts A clamping jaw assembly and cutter assembly employed in machinery used to manufacture nails, screws, rivets, and similar objects starting with wire material. The invention includes a groove design having a smooth wave that reduces the wear rate of the groove improvi... | 08/24/2004 |
| 6742970 | Cutting tool A cutting tool for removing material from a workpiece wherein the cutting tool is held in a pocket of a tool holder. The cutting tool includes a cutting tool substrate with a rake surface and flank surfaces, as well as a notch at the intersection of a pair of adjace... | 06/01/2004 |
| 6737010 | Process for heat treating ceramics A process for making a heat treated ground ceramic cutting tool and the resultant cutting tool. The process includes the steps of: providing an uncoated ground ceramic cutting tool having at least a portion thereof ground; and heat treating the uncoated ground ceram... | 05/18/2004 |
| 6693054 | Method of making SiAlON containing ytterbium A SiAlON material that includes a two phase composite of an alpha prime SiAlON phase and a beta prime SiAlON phase. The alpha prime phase contains ytterbium. The alpha prime SiAlON phase being present in an amount between about 25 weight percent and about... | 02/17/2004 |
| 6660329 | Method for making diamond coated cutting tool A process for making a diamond coated cutting tool that comprises the steps of providing a sintered substrate, re-sintering the sintered substrate to form a re-sintered substrate, subjecting the re-sintered substrate to a chemical treatment to remove coba... | 12/09/2003 |
