Ribbed Periphery Patents (Class 451/547)
  • Patent number: 10072368
    Abstract: A yarn feed system, for control of the feeding of one or more yarns to the needles of a tufting machine, which can be manufactured as a substantially standardized unit or attachment removably mounted to a tufting machine includes a series of yarn feed devices each having a drive motor with a replaceable yarn feed roll drive system mounted thereto. Each yarn feed roll drive system can include a set or series of yarn feed rolls mounted within a housing and having a series of gear teeth formed thereabout, with the gear teeth of the yarn feed rolls engaged in an intermeshing arrangement so that as one of the yarn feed rolls is driven by the drive motor, the other yarn feed rolls likewise are actively driven thereby. Each of the yarn feed rolls further will include a textured roll surface that can provide for enhanced grip and control of the feeding of the yarns which are extended thereabout to the needles of the tufting machine in accordance with a tufted pattern being formed.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: September 11, 2018
    Assignee: Card-Monroe Corp.
    Inventor: Ricky E. Mathews
  • Patent number: 9289881
    Abstract: An abrasive article includes a carrier element, an abrasive component, and a bonding region between the abrasive component and the carrier element. The abrasive component includes abrasive particles bound in a metal matrix. The abrasive component further includes a network of interconnected pores substantially filled with an infiltrant. The infiltrant has an infiltrant composition containing at least one metal element. The bonding region includes a bonding metal having a bonding metal composition containing at least one metal element. The bonding region is a region distinct from the carrier element and is a separate phase from the carrier element. An elemental weight percent difference is the absolute value of the difference in weight content of each element contained in the bonding metal composition relative to the infiltrant composition. The elemental weight percent difference between the bonding metal composition and the infiltrant composition does not exceed 20 weight percent.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: March 22, 2016
    Assignees: SAINT-GOBAIN ABRASIVES, INC., SAINT-GOBAIN ABRASIFS
    Inventors: Ignazio Gosamo, Sebastien Marcel Robert Douveneau
  • Patent number: 9102038
    Abstract: Provided is a beveling grindstone in which diamond abrasive grains etc. are prevented from falling off even after long-term grinding to allow long-term use of the grindstone and in which chipping that occurs during beveling of a hard and brittle material and the occurrence of cracking in the ground material are suppressed. The beveling grindstone is used to bevel the outer circumferential edge of a hard and brittle material and includes: a core having a groove portion formed on the outer circumferential surface thereof with which the outer circumferential edge of the hard and brittle material is brought into contact; and an abrasive grain layer which is formed in the groove portion and to which abrasive grains are secured by brazing. The abrasive grains have an average grain diameter of #4000 to #270.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: August 11, 2015
    Assignee: NIPPON STEEL & SUMIKIN MATERIALS CO., LTD.
    Inventor: Toshiya Kinoshita
  • Patent number: 9033771
    Abstract: A knife sharpener having an angled bolster for providing predetermined sharpening angles with respect to the sharpening surface is provided. The angled bolster of the knife sharpener preferably includes two different angled surfaces for establishing at least two different predetermined sharpening angles for a cutting implement to be sharpened. The angled bolster is configured to set up the knife sharpening angle at predetermined angles with respect to the sharpening surface.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: May 19, 2015
    Assignee: LIFETIME BRANDS, INC.
    Inventor: Adam Krent
  • Patent number: 9028303
    Abstract: An abrasive article including a base having an annular shape defining a central opening; and a mounting assembly coupled to the base, wherein a portion of the mounting assembly is under a compressive force, and a grinding segment coupled to the mounting member.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: May 12, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Ignazio Gosamo, Sebastien Marcel Robert Douveneau, André R. G. Heyen, Emmanuel Thil
  • Patent number: 9011206
    Abstract: The super abrasive wheel includes a core rotating around a rotation axis and a super abrasive layer bonded to the core. The core has a first surface and a second surface located opposite to the first surface. An annular first protrusion portion protruding in the direction away from the first surface is provided at a portion of the second surface that is surrounded with the super abrasive layer. A reference surface is provided in the second surface on the inside of the first protrusion portion. The height from the reference surface to the first protrusion portion is denoted as A. A top portion having the height B from the reference surface is provided at a portion of the second surface between the first protrusion portion and the super abrasive layer. The height B is greater than the height A.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: April 21, 2015
    Assignee: A.L.M.T. Corp.
    Inventors: Tomohiro Ishizu, Yukio Okanishi, Teruyuki Kumazawa
  • Publication number: 20150072602
    Abstract: The present invention is a sharpening tool and sharpening system for sharpening snowmobile carbide wear rails and studs and a kit of parts that includes the sharpening tool and a steering member having a carbide wear rail. The sharpening tool is attachable to the chuck of a hand held drill and includes a shaft attachable to the chuck of the hand held drill and cylindrical head affixed to the shaft. The cylindrical head includes a rail groove surfaced in an abrasive material for sharpening wear rails.
    Type: Application
    Filed: November 17, 2014
    Publication date: March 12, 2015
    Inventor: Glenn S. Welch
  • Patent number: 8944893
    Abstract: A dressable bonded abrasive article has a body that includes a bond material comprising an organic material and a blend of abrasive particles. The particles include a first type of abrasive particle comprising an oxide and having a first hardness and a first toughness; a second type of abrasive particle comprising an oxide and having a second hardness greater than the first hardness, and the second type of abrasive particle has a second toughness less than the first toughness; and a third type of abrasive particle comprising an oxide and having a third hardness greater than the first hardness and less than the second hardness, and the third type of abrasive particle has a third toughness less than the first toughness.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: February 3, 2015
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventor: Emmanuel C. Francois
  • Publication number: 20150011142
    Abstract: The present disclosure relates to an apparatus and to a method for dressing generating grinding tools or profile grinding tools for the gear cutting processing of toothed workpieces using at least two disk-shaped dressing tools with which one or more tool regions and/or profile regions of the tool are provided with a defined dressing geometry.
    Type: Application
    Filed: July 1, 2014
    Publication date: January 8, 2015
    Inventors: Thomas Breith, Manfred Zankl
  • Patent number: 8926407
    Abstract: Devices for removing a coating on a pipe are provided. In one aspect, a device for removing a coating on a pipe includes a sleeve, an arm coupled to the sleeve, and a wheel coupled to the arm. The sleeve includes a wall and an aperture defined through the wall. The wall defines a cavity in the sleeve and the sleeve is adapted to receive the pipe in the cavity. The device also includes a wheel coupled to the arm and adapted to extend through the aperture to engage the coating on the pipe.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: January 6, 2015
    Assignee: Illinois Tool Works Inc.
    Inventors: Randy D. Lewkoski, Timothy P. Sheehan
  • Patent number: 8911283
    Abstract: An abrasive tool includes a bonded abrasive body having abrasive grains contained within a bonding material, wherein the bonded abrasive body comprises a complex shape having a form depth (FD) of at least about 0.3. The form depth is described by the equation [(Rl?Rs)/Rl], wherein Rs is a smallest radius (Rs) at a point along the longitudinal axis of the bonded abrasive body and Rl is a largest radius (Rl) at a point along the longitudinal axis of the bonded abrasive body. The abrasive tool can be used to finish complex shapes in workpieces.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: December 16, 2014
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: John R. Besse, David C. Graham, Krishnamoorthy Subramanian, Srinivasan Ramanath, Marc A. Lamoureux
  • Patent number: 8851962
    Abstract: An object is to provide a barrel-shaped threaded tool for machining an internal gear which is capable of machining with high accuracy by appropriately setting a helix angle. To achieve the object, in a threaded grinding wheel (11) formed into a barrel shape having a diameter gradually decreasing from an axially intermediate portion thereof toward axially opposite end portions thereof so that the threaded grinding wheel (11) is meshed with a workpiece (W) with a crossed axes angle (?) therebetween during the machining of the workpiece (W), the helix angle is set in accordance with the length from the axially intermediate portion.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: October 7, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yoshikoto Yanase, Masashi Ochi
  • Patent number: 8834236
    Abstract: A grinding wheel for treatment of a cutting edge, the grinding wheel arranged mountable on a rotatable shaft to be brought in rotation by the driven rotation of the shaft, and including two grinding discs (1?2) opposing each other and arranged movable relative to each other in the shaft's longitudinal direction and pre-tensioned away from one another, each of the grinding discs having a hub section with fingers protruding freely from the hub section at a radial and an axial component of direction, wherein the fingers are arranged at intervals dimensioned for passage of the corresponding fingers of the opposite grinding disc such that the finger's axial components of direction together form an outwardly open, in an axial cross-sectional plane generally V-shaped notch (V) defined by the intersecting rotational planes of the crosswise running fingers, and in which the fingers each has an area for treatment of the knife's edge.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: September 16, 2014
    Inventor: Tore Eklund
  • Publication number: 20140187130
    Abstract: An abrasive segment can include an inner segment portion, an outer segment portion, and a central segment portion connected thereto. The inner segment portion can include an inner circumferential wall and an outer circumferential wall. Leading and trailing radial sidewalls can extend between the inner circumferential wall and the outer circumferential wall opposite each other. The outer segment portion can include an inner circumferential wall and an outer circumferential wall. Leading and trailing radial sidewalls can extend between the inner circumferential wall and the outer circumferential wall opposite each other. The central segment portion can include a leading radial sidewall and a trailing radial sidewall. The leading radial sidewall of the central segment portion can establish an acute angle, ?, with respect to the outer circumferential wall of the inner segment portion and an obtuse angle, ?, with respect the inner circumferential wall of the outer segment portion.
    Type: Application
    Filed: December 18, 2013
    Publication date: July 3, 2014
    Applicants: Saint-Gobain Abrasifs, Saint-Gobain Abrasives, Inc.
    Inventor: Ignazio Gosamo
  • Publication number: 20140141702
    Abstract: The present invention is a sharpening tool and sharpening system for sharpening snowmobile carbide wear rails and studs and a kit of parts that includes the sharpening tool and a steering member having a carbide wear rail. The sharpening tool is attachable to the chuck of a hand held drill and includes a shaft attachable to the chuck of the hand held drill and cylindrical head affixed to the shaft. The cylindrical head includes a rail groove surfaced in an abrasive material for sharpening wear rails.
    Type: Application
    Filed: November 20, 2012
    Publication date: May 22, 2014
    Inventor: Glenn S. Welch
  • Publication number: 20140141699
    Abstract: Provided are: a screw-shaped grindstone for grinding gears that has a simple configuration and is capable of grinding gears with high precision; and a method for grinding gears. The screw-shaped grindstone (20) for grinding gears, which grinds a workpiece (W1) by rotating while meshing with the workpiece (W1), comprises a screw-shaped grindstone (21) that grinds the workpiece (W1), and a screw-shaped grindstone (22) that is linked to the screw-shaped grindstone (21) on the same axis, and grinds the workpiece (W1), which has been ground by the screw-shaped grindstone (21). A plurality of grinding ranges (L1, L2) that are sectioned at prescribed lengths in the width direction of the grindstone are established with respect to the screw-shaped grindstones (21, 22), and each grinding range (L1, L2) of the screw-shaped grindstones (21, 22) serves as the range of use per workpiece (W1).
    Type: Application
    Filed: February 20, 2012
    Publication date: May 22, 2014
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yoshikoto Yanase, Masashi Ochi
  • Publication number: 20140141703
    Abstract: A honing tool or device having a generally cylindrical body includes a plurality of axially extending webs to which are attached a like plurality of curved honing blades. A portion of the external surface of each blade remote from the attachment point includes an abrasive coating. The radius of curvature of the portion of the blades including the abrasive coating is nominally the same as the radius of the desired finish diameter of the bore. Resilient dampers are disposed behind the blades in the body to dampen vibrations. An additional plurality of webs may be disposed behind the blades to limit their inward translation. A double or tandem honing device includes a pair of the just described honing tools which are arranged in axially spaced apart relationship on a common shaft.
    Type: Application
    Filed: November 16, 2012
    Publication date: May 22, 2014
    Inventor: James L. Ebert
  • Patent number: 8708781
    Abstract: A system for grinding surgical needles made of refractory metal alloys such as tungsten-rhenium alloys includes a rotatable grinding wheel having a grinding surface, a layer of a binding material, such as a nickel binding material layer, overlying the grinding surface, and a plurality of abrasive particles, such as ABN600 abrasive particles, embedded within the binding material layer. The abrasive particles are similarly sized and the binding material layer has a thickness that is about 65% of the size of the similarly sized abrasive particles. The system includes a lubricating device adapted to apply a lubricant to an interface between the grinding surface and distal ends of needle blanks and a rotating element coupled with the rotatable wheel for rotating the grinding surface at about 10,000 surface feet per minute.
    Type: Grant
    Filed: December 5, 2010
    Date of Patent: April 29, 2014
    Assignee: Ethicon, Inc.
    Inventor: Michael L. Hamilton
  • Publication number: 20140104567
    Abstract: The present invention relates to a beveling wheel and method for forming a beveled lens with the beveling wheel for use with eyeglasses. One embodiment includes a prescription lens for use on an eyeglass frame having a receiving channel. The receiving channel includes a channel bottom and opposed interior wall surfaces having a first angle therebetween. The prescription plastic lens includes a prescription lens body generally defined by a peripheral edge having a bevel extending away from the edge to a vertex. The bevel has a distal portion with a second angle. The bevel is receivable within the receiving channel. At least a portion of the vertex of the bevel has an interference fit with the receiving channel bottom when held within the eyeglass frame. The first angle is greater than the second angle.
    Type: Application
    Filed: December 19, 2013
    Publication date: April 17, 2014
    Inventor: Ronald C. WIAND
  • Publication number: 20140080394
    Abstract: Provided is a beveling grindstone in which diamond abrasive grains etc. are prevented from falling off even after long-term grinding to allow long-term use of the grindstone and in which chipping that occurs during beveling of a hard and brittle material and the occurrence of cracking in the ground material are suppressed. The beveling grindstone is used to bevel the outer circumferential edge of a hard and brittle material and includes: a core having a groove portion formed on the outer circumferential surface thereof with which the outer circumferential edge of the hard and brittle material is brought into contact; and an abrasive grain layer which is formed in the groove portion and to which abrasive grains are secured by brazing. The abrasive grains have an average grain diameter of #4000 to #270.
    Type: Application
    Filed: August 24, 2011
    Publication date: March 20, 2014
    Applicant: Nippon Steel & Sumikin Materials Co., Ltd.
    Inventor: Toshiya Kinoshita
  • Patent number: 8641482
    Abstract: A gear grinding tool, which includes a helical tooth with grinding faces on surfaces thereof, grinds tooth faces of a gear as a workpiece with the grinding faces. The grinding face includes a rough grinding face for performing a rough grinding process. The grinding face includes a rough grinding face for performing a rough grinding process, and the rough grinding face includes a forming line for performing a finishing process.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: February 4, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Tatsuya Ito, Naoki Iwasa, Hiroshi Ogawa, Keisuke Takahashi, Yuichi Tomizawa, Yasutaka Matsuo, Masahiro Izumida
  • Patent number: 8602841
    Abstract: A form tap includes a shank having a shank length and a thread portion that extends along at least a portion of the shank length. The thread portion includes a finishing portion and a chamfer portion. Each of the finishing portion and the chamfer portion include a plurality of threads and each thread has a crest and a root. The plurality of threads of both the finishing portion and the chamfer portion are spaced apart at a constant pitch, such that a crest-to-crest distance between adjacent threads remains constant along the entire thread portion.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: December 10, 2013
    Inventor: Harry Leroy Ellis
  • Patent number: 8597079
    Abstract: Ophthalmic abrasive wheel including a plurality of swarf clearing grooves formed across the cutting surface and having closed profiles such that the swarf clearing grooves do not open to or exit the side of the abrasive wheel. The swarf clearing grooves are spaced around the cutting surface of the wheel and are configured so as to be substantially angled either towards or away from one another.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: December 3, 2013
    Assignee: Inland Diamond Products Company
    Inventors: Ronald C. Wiand, Dennis R. Raffaelli
  • Patent number: 8597085
    Abstract: Full profile dressing roll (1) for dressing multi-start grinding worms for the generation grinding of small-module gears, comprising a groove-shaped axial section profile of the outer envelope surface (2), covered with hard material grains, and profile-cut hard-material profile combs (3) embedded in this envelope surface and having a multi-ribbed rack tooth system profile, the profile of which touches the outer envelope surface (2) of the dressing roll (1) only in sections of the axial section profile of the dressing roll (1) which do not participate in the generation of the grinding worm flanks. As a result, the profile sections, highly stressed during the dressing, at the crest and root of the profile grooves (4) are protected from high wear and premature grain loss and the service life of the dressing roll is effectively increased without the inhomogeneity of the flank surface of the dressing roll (1) being disturbed by the profile combs (3).
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: December 3, 2013
    Assignee: Reishauer AG
    Inventor: Christoph Rudolf
  • Patent number: 8597080
    Abstract: Ophthalmic rough-cut and polishing wheels having a plurality of swarf clearance grooves formed across the shaping face are described. The grooves are spaced around the shaping face of the wheels, wherein the slots are configured so as to be substantially angled either towards or away from one another.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: December 3, 2013
    Assignee: Inland Diamond Products Company
    Inventor: Dennis R. Raffaelli
  • Patent number: 8591295
    Abstract: An abrasive article including a base having an annular shape defining a central opening; and a mounting assembly coupled to the base, wherein a portion of the mounting assembly is under a compressive force, and a grinding segment coupled to the mounting member.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: November 26, 2013
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrsifs
    Inventors: Ignazio Gosamo, Sebastien Marcel Robert Douveneau, Andre R. G. Heyen, Emmanuel Thil
  • Patent number: 8568205
    Abstract: An abrasive article includes a carrier element, an abrasive component, and a bonding region between the abrasive component and the carrier element. The abrasive component includes abrasive particles bound in a metal matrix. The abrasive component further includes a network of interconnected pores substantially filled with an infiltrant. The infiltrant has an infiltrant composition containing at least one metal element. The bonding region includes a bonding metal having a bonding metal composition containing at least one metal element. The bonding region is a region distinct from the carrier element and is a separate phase from the carrier element. An elemental weight percent difference is the absolute value of the difference in weight content of each element contained in the bonding metal composition relative to the infiltrant composition. The elemental weight percent difference between the bonding metal composition and the infiltrant composition does not exceed 20 weight percent.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: October 29, 2013
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Ignazio Gosamo, Sebastien Marcel Robert Douveneau
  • Publication number: 20130244547
    Abstract: The invention seeks to provide a wood sanding bit that can be used for the sanding of routered work piece edges. Specifically, the invention seeks to provide a wood sanding bit for use with a rotary tool, the bit comprising a sanding body having an outwardly and radially disposed sanding surface, the sanding surface provided with an abrasive material, wherein the sanding surface has a profile corresponding to a standard contoured router bit profile.
    Type: Application
    Filed: September 14, 2012
    Publication date: September 19, 2013
    Inventor: Urbain Morelli
  • Patent number: 8512098
    Abstract: A material working process using a plated superabrasive grinding wheel having a superabrasive plating applied to a circumferential surface of a cylindrically shaped core. The plating is applied to at least a lower portion of a circumferential surface of the core continuing around a lower edge of the core and along a circumferential edge of a bottom surface of the core. The superabrasive grinding wheel is utilized by a Swiss style screw machine for abrading a raw bar stock. The grinding wheel is rotated abrading the raw bar stock as the stock is advanced along a longitudinal axis. The bar stock can be rotationally stationary to form a planar surface or rotating to form an arched surface. A machining lubricant is applied to the working interface for lubrication and cooling. The stationary work piece can be indexed to form repeated planar surfaces having various angles therebetween.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: August 20, 2013
    Inventor: Jeffrey Bonner
  • Patent number: 8485865
    Abstract: A grinding wheel for grinding features into a work-piece and a corresponding method for grinding the features into the work-piece are disclosed herein. The grinding wheel includes an outer periphery with a first axial end having a first diameter. The grinding wheel also includes a second axial end spaced from the first axial end along a centerline axis. The grinding wheel also includes a plurality of discrete grinding projections for removing material from the work-piece. Each of the plurality of discrete grinding projections extends radially outward from the outer periphery and is positioned along the centerline axis in spaced relation to one another. The plurality of grinding projections have working heights that vary relative to one another. In the inventive method, a grinding wheel is rotated about an axis of rotation. The axis of rotation is arranged transverse to and spaced from a centerline axis of an arcuate surface of a work-piece.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: July 16, 2013
    Assignee: Rolls-Royce Corporation
    Inventor: Mark Iain Pilkington
  • Patent number: 8469075
    Abstract: A coating film peeling apparatus for resin material includes: a peeling cylinder, a peeling roll installed therein with a space for a peeling process along an inner wall of the peeling cylinder, a resistance lid disposed to block a discharge port of the peeling cylinder, and a pressure adjustment part for adjusting an outflow rate and internal pressure of the peeling cylinder. The peeling cylinder is constituted by a polygonal-shaped angular columnar body having, as coating film pass-through holes, rows K of small holes and rows L of small holes and projection rings (angular embossments) provided alternately in multiple rows along a direction perpendicular to a rotating direction of the peeling roll.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: June 25, 2013
    Assignee: Satake Corporation
    Inventors: Hidekazu Furukawa, Katsumi Okamoto
  • Publication number: 20130090043
    Abstract: The invention relates to a method for dressing of a multiple thread grinding worm, wherein the contour of the flanks of the screw channels which are running spiral-like and parallel to another is produced by a dressing tool. To obtain an improved grinding result especially with reduced dressing time the invention proposes that in at least two screw channels contours of the flanks are produced, which are distinguished from another by their geometry and/or by their surface structure. Furthermore, the invention relates to a method for grinding of a work piece and a grinding worm.
    Type: Application
    Filed: October 9, 2012
    Publication date: April 11, 2013
    Applicants: NILES WERKZEUGMASCHINEN GMBH, KAPP GMBH
    Inventors: KAPP GMBH, NILES WERKZEUGMASCHINEN GMBH
  • Patent number: 8382560
    Abstract: To provide a barrel worm-shaped tool capable of grinding processing in high precision, while maintaining the reduction of heavy load during the processing and partial wear. For this purpose, a barrel worm-shaped tool that is used in the gear machining of an internal gear (11) is formed with its diameter gradually increasing from the two end portions in the axial direction thereof towards the middle portion thereof. The barrel worm-shaped tool (12) is formed so that edge shapes (31) of the grinding wheel (12) becomes gradually smaller from the edge shape (31) located in the middle portion, in the axial direction of the barrel worm-shaped tool (12) towards the edge shape (31) located in the two end portions, in the axial direction, of the barrel worm-shaped tool (12) in accordance with the amount of machining allowance for the internal gear (11).
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: February 26, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yoshikoto Yanase, Masashi Ochi
  • Patent number: 8360046
    Abstract: The present invention relates to a cutting tip for a cutting tool, which is used in cutting or drilling a brittle workpiece such as stone, bricks, concrete, and asphalt and has an excellent cutting speed and a long lifetime, a method of manufacturing the cutting tip, and a cutting tool including the cutting tip. The cutting tip includes an abrasive material and a sintered bonding material, wherein the bonding material is formed of a metal matrix; the metal matrix includes a phase II and/or pore having a certain size at a certain volume fraction; and the phase II is one of a non-metallic inclusion and ceramic. According to an aspect of the present invention, there is provided a cutting tip having excellent cutting speed and a long lifetime at a much lower price.
    Type: Grant
    Filed: February 23, 2007
    Date of Patent: January 29, 2013
    Assignee: EWHA Diamond Industrial Co., Ltd.
    Inventors: Tae-Woong Kim, Joong-Cheul Yun, Young-Choul Song, Sang-Beom Kim, Jung-Nam Park, Suk-Hyun Yoo, Tae-Bong Kim
  • Patent number: 8172644
    Abstract: A grinding machine is provided with first and second grinding wheels selectively used in dependence on the steps of machining operations. The second grinding wheel is grooved so that at least one oblique groove vertically crosses a contact surface on which a grinding surface of the second grinding wheel contacts with a workpiece, and thus, is capable of releasing a dynamic pressure in coolant generated between the grinding surface and the workpiece since coolant supplied from over the contact surface flows out from both of the upper and lower sides of the contact surface through the at least one oblique groove. Since it does not occur that fluctuations in the dynamic pressure generated in coolant cause the distance between the second grinding wheel and the workpiece to be varied, the accuracy in grinding the workpiece with the second grinding wheel can be enhanced.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: May 8, 2012
    Assignee: JTEKT Corporation
    Inventors: Yoshihiro Mizutani, Hiroshi Morita, Yuuta Kobayashi
  • Publication number: 20110269383
    Abstract: An object is to provide a barrel-shaped threaded tool for machining an internal gear which is capable of machining with high accuracy by appropriately setting a helix angle. To achieve the object, in a threaded grinding wheel (11) formed into a barrel shape having a diameter gradually decreasing from an axially intermediate portion thereof toward axially opposite end portions thereof so that the threaded grinding wheel (11) is meshed with a workpiece (W) with a crossed axes angle (?) therebetween during the machining of the workpiece (W), the helix angle is set in accordance with the length from the axially intermediate portion.
    Type: Application
    Filed: November 13, 2009
    Publication date: November 3, 2011
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yoshikoto Yanase, Masashi Ochi
  • Patent number: 8007347
    Abstract: The present invention relates to rotary abrading tools of the erasure-type. The invention includes a wheel assembly comprising an annular eraser wheel having an outer crown of radially directed teeth, a central core of an elastomeric material that radially expands during operation, and a pair of discoid hubs secured on opposite axial ends of the eraser wheel. The teeth of the eraser wheel are helically arranged.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: August 30, 2011
    Assignee: Dynabrade, Inc.
    Inventors: Mark Lampka, Matthew Giles
  • Patent number: 7904989
    Abstract: A rotary eraser assembly includes a rotary eraser, two discs, a threaded bolt and a nut. The rotary eraser includes, in each of two opposite sides, a cavity in communication with the aperture and at least one recess in the wall of the cavity. Each of the discs includes an annular lip disposed in the cavity in a related one of the sides of the rotary eraser and at least one block disposed in the recess in the related side of the rotary eraser. The threaded bolt is inserted through the rotary eraser and the discs. The nut is engaged with threaded bolt.
    Type: Grant
    Filed: February 2, 2008
    Date of Patent: March 15, 2011
    Assignee: Tsan Chung Industrial Co., Ltd.
    Inventor: Tao-Chuan Chen
  • Publication number: 20100326416
    Abstract: A rotary abrasive tool comprising an abrasive arranged in a predetermined pattern around a periphery of the rotary abrasive tool to simulate saw teeth, and a method of manufacturing such rotary abrasive tool Preferably, a single layer of abrasive is applied on the rotary abrasive tool. Each simulated saw tooth has a centerline which is not perpendicular to a cutting surface of the rotary abrasive tool.
    Type: Application
    Filed: March 18, 2009
    Publication date: December 30, 2010
    Inventor: Ronald Schwarz
  • Patent number: 7824246
    Abstract: In a wheel spindle device wherein a plurality of grinding wheels are attached in a juxtaposed relation to a wheel spindle rotatably carried on a wheel head of a grinding machine, a reference position for specifying a position in the circumferential direction of the grinding wheel is provided on a core member of each of the grinding wheels, and a plurality of inclined grooves at predetermined angular intervals are formed on a grinding surface of each grinding wheel to be inclined relative to the circumferential direction of each grinding wheel. In order that the fluctuations in the dynamic pressure and the grinding resistance between respective grinding wheels and workpiece portions ground therewith do not grow as a combined or synergy effect, the inclined grooves on each grinding wheel are shifted in angular phase from those on another grinding wheel, so that grinding efficiency and accuracy can be enhanced.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: November 2, 2010
    Assignees: Toyoda Van Moppes Ltd., JTEKT Corporation
    Inventors: Tomohiro Inagaki, Tomoyasu Imai, Takayuki Moroto, Shinji Soma
  • Publication number: 20100210198
    Abstract: To provide a barrel worm-shaped tool capable of grinding processing in high precision, while maintaining the reduction of heavy load during the processing and partial wear. For this purpose, a barrel worm-shaped tool that is used in the gear machining of an internal gear (11) is formed with its diameter gradually increasing from the two end portions in the axial direction thereof towards the middle portion thereof. The barrel worm-shaped tool (12) is formed so that edge shapes (31) of the grinding wheel (12) becomes gradually smaller from the edge shape (31) located in the middle portion, in the axial direction of the barrel worm-shaped tool (12) towards the edge shape (31) located in the two end portions, in the axial direction, of the barrel worm-shaped tool (12) in accordance with the amount of machining allowance for the internal gear (11).
    Type: Application
    Filed: August 1, 2008
    Publication date: August 19, 2010
    Applicant: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yoshikoto Yanase, Masashi Ochi
  • Patent number: 7722442
    Abstract: Two counter-rotating, intermeshing, toothed wheels grind opposite sides of an interposed blade to create or burrlessly sharpen a knife-edge on the blade. The wheels can be solid or comprised of a fixed stack of toothed disks, concentrically aligned, the teeth of each succeeding disk angularly offset in a common direction from the teeth of the next preceding disk to create a wheel having a plurality of uniform, elongated composite teeth around the circumference of the stack, the teeth being angled from the wheel's axis. Two such wheels, one with teeth angled in an opposite direction, can be counter-rotated and because of the oppositely angled teeth, are capable of intermeshing. The degree of intermeshing can be selectively varied to correspondingly vary the sharpening angle. The apex ridges of both the solid and composite teeth can be selectively profiled to sharpen non-uniformly, e.g. serrating a blade edge.
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: May 25, 2010
    Assignee: GT Knives, Inc.
    Inventor: Todd Jones
  • Patent number: 7695353
    Abstract: In a grinding wheel in which abrasive tips for rough grinding and abrasive tips for finish grinding are alternately bonded to a periphery of a disk type base rotating about a rotation axis, each abrasive tip includes the abrasive layer formed by bonding abrasive grains and a lower layer overlaid and integrally for led with the abrasive layer. The abrasive tip is attached to the periphery of the base at the lower layer. A Young's modulus of the lower layer of the abrasive tip for finish grinding relative to a load acting on the grinding surface of the abrasive tip in an inward direction of the grinding wheel is less than that of the abrasive tip for rough grinding. Thereby, the surface of a workpiece can be both rough-ground and finish-ground with superhigh-precision surface roughness with using one grinding wheel.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: April 13, 2010
    Assignees: Toyoda Van Moppes Ltd., JTEKT Corporation
    Inventors: Takayuki Moroto, Kunihiko Unno, Masato Kitajima, Tomoyasu Imai, Yasuhisa Sekiya, Tomohiro Inagaki, Noboru Hiraiwa, Hiroshi Takehara, Toshiaki Sakurai, Shinji Soma
  • Patent number: 7661419
    Abstract: The invention relates to a cutting segment of a diamond tool for cutting or drilling a brittle workpiece such as stone, bricks, concrete and asphalt, and a diamond tool having the same. The invention allows superior cutting rate and lengthy useful life without suffering from R wear during cutting. In the cutting segment, a number of diamond particles are arranged in a plurality of plate-shaped layers stacked perpendicular to a cutting direction. Each of the diamond particle layers has a plurality of particle rows on a cutting surface. Further, at least two of the diamond particle layers are superimposed on at least one side of the cutting segment seen from the front of the cutting segment in cutting direction. The invention ensures uniform cutting by significantly reducing R wear that arises during cutting and thus enables superior cutting rate and longer useful life.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: February 16, 2010
    Assignees: Ehwa Diamond Industrial Co., Ltd., General Tool, Inc.
    Inventors: Soo-Kwang Kim, Hee-Dong Park, Jong-Ho Kim, Joon-Ho Chang
  • Publication number: 20100035530
    Abstract: An abrasive article includes a carrier element, an abrasive component, and a bonding region between the abrasive component and the carrier element. The abrasive component includes abrasive particles bound in a metal matrix. The abrasive component further includes a network of interconnected pores substantially filled with an infiltrant. The infiltrant has an infiltrant composition containing at least one metal element. The bonding region includes a bonding metal having a bonding metal composition containing at least one metal element. The bonding region is a region distinct from the carrier element and is a separate phase from the carrier element. An elemental weight percent difference is the absolute value of the difference in weight content of each element contained in the bonding metal composition relative to the infiltrant composition. The elemental weight percent difference between the bonding metal composition and the infiltrant composition does not exceed 20 weight percent.
    Type: Application
    Filed: May 8, 2009
    Publication date: February 11, 2010
    Applicants: SAINT-GOBAIN ABRASIVES, INC., SAINT-GOBAIN ABRASIFS
    Inventors: Ignazio Gosamo, Sebastien Marcel Robert Douveneau
  • Publication number: 20090119932
    Abstract: A curved and toothed cutting blade for a trimmer comprising a base body having at least a connecting member for mounting onto a trimmer and a longitudinal cutting edge on one side which is symmetrically concave downward and has teeth, wherein the curve of the cutting edge is in the form of a segment of the interior of a circular arc of a lens with the two interior angles of any teeth not having different degrees of angle and the dent in between any two teeth being not perpendicular to the base pitch of the tips of the two teeth and slanted towards the center point of the curve of the cutting edge; and a grinding wheel for manufacturing the cutting blade, wherein the cutting blade is manufactured by a grinding wheel which is in the form of a lens with the two endpoints truncated with diameter being the largest in the middle and gradually decreasing towards the two ends and the surface of which has grooves of sizes and shapes which correspond to the sizes and shapes of the teeth of the cutting blade.
    Type: Application
    Filed: November 10, 2007
    Publication date: May 14, 2009
    Applicant: SPECIALIFE INDUSTRIES LIMITED
    Inventor: Tung Yan LAU
  • Publication number: 20090117830
    Abstract: Ophthalmic rough-cut and polishing wheels having a plurality of swarf clearance grooves formed across the shaping face are described. The grooves are spaced around the shaping face of the wheels, wherein the slots are configured so as to be substantially angled either towards or away from one another.
    Type: Application
    Filed: December 29, 2008
    Publication date: May 7, 2009
    Applicant: Inland Diamond Products Company
    Inventor: Dennis R. Raffaelli
  • Publication number: 20090053977
    Abstract: A gear grinding tool can be trued and re-profiled. The geometry of the individual profiles in the direction of the tool axis is designed so that at least more than two, preferably all, flanks of the tool are used for rough machining of the work piece flanks, and that during finishing the re-profiled flanks provided only for roughing are set back far enough so that during finishing they do not come into contact with the work piece flanks.
    Type: Application
    Filed: August 22, 2008
    Publication date: February 26, 2009
    Inventors: Dragan Vucetic, Bjorn Sandler, Ingo Faulstich
  • Patent number: 7462096
    Abstract: A surface-treatment wheel has an inner element rotatable about an axis, and an outer ring fixed rotationally on the inner element, centered on the axis, and formed unitarily with an annular array of radially outwardly projecting teeth defining outwardly open notches, and respective angularly extending webs or ridges in the notches.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: December 9, 2008
    Assignee: Monti-Werkzeuge GmbH
    Inventor: Werner Montabaur
  • Patent number: 7337775
    Abstract: 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 which are suitably arrayed to improve the cutting rate. A cutting tip for a diamond tool having diamond particles which are distributed in the cutting tip, wherein the diamond particles are inclined in respect to a cutting direction in a plane parallel to a cutting surface, and arrayed whereby grooved channels are formed successively overlapped on a brittle substance in cutting operation.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: March 4, 2008
    Assignee: Ehwa Diamond Industrial Co., Ltd.
    Inventors: Soo-Kwang Kim, Jong-Ho Kim, Hee-Dong Park