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| Number | Title | Issue Date |
| 8182318 | Obliquely grooved grinding wheel and method for manufacturing the same In a manufacturing method for a grinding wheel in which a plurality of wheel chips each composed of an abrasive grain layer containing superabrasive grains and a foundation layer are adhered to a core attached to a wheel spindle carried by a wheel head of a grinding... | 05/22/2012 |
| 7353819 | Processing tips and tools using the same A processing tip and a cutting tool employing the same, including a tip body of a mixture of metal and abrasive material, and at least one projection coupled to the tip body, the projection extending in a direction perpendicular to a direction of a plane of contact ... | 04/08/2008 |
| 7337775 | Cutting tip for diamond tool and diamond tool A cutting tip for a diamond tool and a diamond tool having the same which serve to cut or perforate various brittle materials such as stone, brick, concrete and asphalt. In particular, the cutting tip for a diamond tool and the diamond tool have diamond particles wh... | 03/04/2008 |
| 7270199 | Cutting element with a non-shear stress relieving substrate interface The present invention includes an improved cutting element substrate for cutting elements. The cutting element substrate includes non-planar, non-linear interfaces with an abrasive layer of superhard material affixed thereto often using a high pressure high temperat... | 09/18/2007 |
| 7261622 | Multiple cutting edged sanding wheel An improved sanding wheel configured to rotate axially for sanding or polishing milled contours that will provide sharp edges and corners in the workpiece. The preferred sanding wheel has a cylindrical body with a plurality of segments extending radially from the bo... | 08/28/2007 |
| 7235007 | Divided grinding tool The invention relates to a grinding tool which comprises at least two detachable parts which are connected together. Both parts form a grinding disk-type body comprising a grinding surface which is interrupted on the peripheral area thereof. Said parts can be adjust... | 06/26/2007 |
| 7207876 | Flap wheel and method A flap wheel includes a hub with axially extending slots for receiving discrete packs, each pack including a clip receivable in the slot with walls projecting beyond the slot, and end caps fitting on the ends of the hub and including fingers interlaced with the ends... | 04/24/2007 |
| 7168744 | Fastening structure for use at low temperature A first flange and a second flange are superposed and fastened with a bolt and a nut in a fastening operation, to implement a fastening structure used at temperature lower than atmospheric temperature for the fastening operation. Assuming that the first flange has a... | 01/30/2007 |
| 7144315 | Grinding wheel A grinding wheel including a ring-shaped wheel, a first fixing cap, a second fixing cap and a buffer member. The ring-shaped wheel has a fixing section and a working section formed along outer circumference of the fixing section. The first and second fixing caps are... | 12/05/2006 |
| 7131903 | Segmented superabrasive grinding device The present invention is for a grinding device, such as a surface grinding disc or an annular grinding wheel, constructed from a plurality of abrasive segments arranged in an array thereon, wherein the plurality of abrasive segments are embedded in a matrix composit... | 11/07/2006 |
| 7108598 | PDC interface incorporating a closed network of features A superhard compact having an improved superabrasive-substrate interface region design for use in drilling bits, cutting tools and wire dies and the like. This compact is designed to provide an interface design to manipulate residual stresses to enhance the working ... | 09/19/2006 |
| 7097551 | Cutting tools with two-slope profile An abrasive tool insert is formed from a substrate having an inner face that has a center. The inner face slopes outwardly and downwardly from the center. An annular face slopes downwardly and outwardly from the inner face. An abrasive layer, having a center and a p... | 08/29/2006 |
| 7086938 | Grinding segment and grinder stone The invention relates to a grinding segment comprising a ceramic part manufactured of grinding ceramic material and provided with a fastening hole, through which the grinding segment is attached to a frame of a grinder stone by means of a fastening bolt. A fastening... | 08/08/2006 |
| 7073496 | High precision multi-grit slicing blade An abrasive cutting blade is provided to achieve high-quality surface finishes at high feed rates. The blade is fabricated by electroplating fine abrasive onto a steel cathode disc to form a first layer, followed by electroplating a second layer of coarser abrasive ... | 07/11/2006 |
| 7063608 | Grinding wheel having core body coated with impermeable coating A grinding wheel including: (a) an annular core body which includes a multiplicity of aggregate particles and a resin bond that holds said aggregate particles together; (b) an abrasive layer which is disposed radially outwardly of said annular core body and which in... | 06/20/2006 |
| 7028790 | Rotary drill bit A drill bit includes a body defining an axis and first and second cylindrical portions, a coupling adapted for connection with a rotary driver, and a depth stop adjustably secured to a first portion by a plurality of adjusting fasteners in a manner to limit penetrat... | 04/18/2006 |
| 6994615 | Cutting tools with two-slope profile An abrasive tool insert is formed from a substrate having an inner face that has a center, and annular face which annular face has a periphery. The inner face slopes outwardly and downwardly from the center at an angle ranging from between about 5° and 30° from th... | 02/07/2006 |
| 6994616 | Grinding unit for grinding machines and mounting method for the same A grinding unit assembly, a plurality of which is placed around a cylinder (12) of a grinding machine. Each assembly comprises a grindstone unit (1) and a metal fixture (16). The grindstone holder (3) has on one side face a positioning cu... | 02/07/2006 |
| 6890250 | Diamond blade having rim type cutting tip for use in grinding or cutting apparatus A diamond blade having rim type cutting tip for use in apparatus such as cutting saw machine having a structure which rim type cutting tip is able to produce cutting chips with relative large size during cutting operation so that those chips are easily discharged ou... | 05/10/2005 |
| 6878051 | Saw blade with shaped gullets A tool such as a circular diamond abrasive saw blade includes a circular metallic body having a substantially central aperture through which the saw blade is mountable to a rotatable drive shaft, and a plurality of cutters disposed in spaced relation along a periphe... | 04/12/2005 |
| 6872133 | Wave saw blade A saw blade for cutting hard workpieces, such as concrete or stone, characterized by improvement of the shape of a shank of the saw blade providing a plurality of cutting tips of the saw blade with a rotational force while the cutting tips are securely attached to t... | 03/29/2005 |
| 6846233 | Segmental type grinding wheel A grinding wheel of segmental type including an inner cylindrical core portion, and an outer grinding portion consisting of a plurality of segments which have abrasive layers formed of abrasive grains bonded together with a glass bonding agent and which are bonded t... | 01/25/2005 |
| 6827641 | Grinding wheel having synthetic resin layers covering axially opposite end faces of body of the wheel A grinding wheel including (a) a cylindrical main body having a grinding surface on its outer circumferential surface, and (b) a pair of synthetic resin layers disposed on respective axially opposite end faces of the cylindrical main body. Each of the synthetic resi... | 12/07/2004 |
| 6796891 | Grinding wheel, a process of manufacturing the grinding wheel and a process of reclaiming the grinding wheel A grinding wheel comprising an outer annular grinding portion, and an inner core portion which is located radially inwardly of the annular grinding portion to support the annular grinding portion and which is formed of a composition including as a major component a ... | 09/28/2004 |
| 6793564 | Rotary tool with combined abrasive and fragmentation action for producing profiles or cuts on sheets of fragile material such as marble, granite, stone, glass and the like The rotary tool for producing profiles or cuts in hard fragile materials such as marble, granite, stone, glass and the like comprises at least one rotationally symmetrical body (1, 2) involving a configuration defined by the envelope of a multiplicity of circ... | 09/21/2004 |
| 6752141 | Circular cut-off saw blade A circular cut-off saw blade with a circular body having a peripheral edge, a plurality of curved slots spaced along the peripheral edge, each slot having an open outer end connecting with the peripheral edge, and defined by essentially parallel, continuously-curved... | 06/22/2004 |
| 6712682 | Grinding wheel fixture A grinding wheel fixture (S) for the accommodation of a dressable grinding wheel (5) is provided with an annular groove (6, 6′, 8) for the accommodation of balancing lugs (9, 10), the balancing lugs (9, 10) being for manual balancing pu... | 03/30/2004 |
| 6705936 | Large-width, angular-sided segmental superabrasive grinding wheel The present invention relates to an abrading tool having a rotatable body of revolution having an axis of rotation. A peripheral workface is fixedly attached to the body of revolution. The workface is formed by a plurality of discrete, geometrically-shaped segments ... | 03/16/2004 |
| 6641473 | Grinding wheel with abrasive segment chips including at least two abrasive segment chips whose circumferential lengths are different from each other A grinding wheel which is to be rotated about its axis for grinding a workpiece, including: (a) a base disk; and (b) a plurality of abrasive segment chips which are fixed to the base disk such that the abrasive segment chips are arranged on a circle havin... | 11/04/2003 |
| 6638152 | Diamond blade having segment type cutting tip for use in cutting, grinding or drilling apparatus A diamond tool having segment type cutting tip for cutting, grinding or drilling workpieces. The diamond tool comprising a plurality of segment type cutting tips circumferentially fixed on the wheel of the diamond tool, each of which has at least two diam... | 10/28/2003 |
| 6638153 | Diamond saw blade equipped with undercut preventing tip The invention relates to a diamond saw blade which is made by attaching improved undercut preventing tips, produced by diffusing and joining cobalt-based powder onto ultra hard tips at a high temperature, to respective shank slot walls formed on the circu... | 10/28/2003 |
| 6615816 | Rotary cutting saw having abrasive segments in which wear-resistant grains are regularly arranged A rotary cutting saw including (a) a base disk and (b) a plurality of abrasive segments fixed to an outer circumferential surface of the base disk and are spaced apart from each other in a circumferential direction of the base disk. The base disk has a pl... | 09/09/2003 |
| 6564887 | Core drill The present invention relates to a core drill wherein initial drilling workability is improved through reduced frictional resistance on the segment tips, when they are seated on the surface of an article to start cutting operation, and wherein cutting scr... | 05/20/2003 |
| 6453899 | Method for making a sintered article and products produced thereby A method for making a sintered article comprising providing a plurality of individual blocks of sinterable matrix material, arranging said blocks in abutting relationship to form an assembly of said blocks in a sinter mold wherein said assembly comprises ... | 09/24/2002 |
| 6450870 | Vitrified grindstone having pores partially filled with resin, and method of manufacturing the same A vitrified grindstone having a vitrified abrasive structure which has pores and which includes abrasive grains and an inorganic bonding agent that holds the abrasive grains together, wherein 10-95% of a total volume of the pores is filled with a cured re... | 09/17/2002 |
| 6446740 | Cutting element with improved polycrystalline material toughness and method for making same A cutting element having a cutting table made from sheet segments of commingled ultra hard material and binder. Each segment may be made from a finer or a coarser grade of ultra hard material or from different types of ultra hard material. The segments ar... | 09/10/2002 |
| 6358133 | Grinding wheel A cylindrical, abrasive grinding wheel having a cylindrical abrasive region with an abrasive surface at an outer circular band thereof. The abrasive region includes layers of abrasive particles. The layers of abrasive particles can be tilted with respect ... | 03/19/2002 |
| 6325165 | Cutting element with improved polycrystalline material toughness A cutting element having a cutting table made from sheet segments of commingled ultra hard material and binder. Each segment may be made from a finer or a coarser grade of ultra hard material or from different types of ultra hard material. The segments ar... | 12/04/2001 |
| 6309292 | Rotary tool for surface treatment A rotary tool for the erasure-type abrading of adhesive residues and foil, in particular, from lacquered metal surfaces has an outer tooth crown of rubber or an elastomeric synthetic resin, the teeth being bendable. The tooth disk is mounted on a disk-sha... | 10/30/2001 |
| 6283845 | Grinding wheel A grinding wheel includes a carrier wheel and a grinding layer formed on a peripheral surface of the carrier wheel. The grinding layer includes grinding segments and cup-shaped or scoop-shaped openings between the grinding segments.... | 09/04/2001 |
