Patents Assigned to Kennametal Inc.
  • Publication number: 20200215627
    Abstract: A hardware fastener with a movable threaded element suspended within a cavity formed in a body. The movable threaded element has an internal surface with threads for cooperating with a threaded fastener. The movable threaded element is suspended in the cavity by the one or more spring-like members such that an area, A, of reduced stiffness is created in the cavity proximate the movable threaded element, thereby allowing the movable threaded element to move a predetermined distance within the cavity when torque is applied to the threaded fastener. The one or more spring-like members store elastic potential energy to prevent the loss of pretension of the threaded fastener that can be caused by heat or vibration. The invention also eliminates the need for a torque wrench when tightening the threaded fastener to a specified torque value.
    Type: Application
    Filed: January 3, 2019
    Publication date: July 9, 2020
    Applicant: Kennametal Inc.
    Inventors: Alan J. Bookheimer, Ruy Frota de Souza Filho, Jason Won Goldsmith, Jeremy P. Canonge
  • Patent number: 10689750
    Abstract: An evaporator body for a PVD coating system comprises a basic body and an evaporator surface, to which a titanium dihydride layer is applied. A titanium hydride layer comprises an organic carrier agent and titanium hydride as the single inorganic solid. The thickness of the layer is less than or equal to 10 ?m.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: June 23, 2020
    Assignee: KENNAMETAL INC.
    Inventors: Rudolf Karl Grau, Rodrigue Ngoumeni Yappi, Hubert Josef Schweiger
  • Patent number: 10682712
    Abstract: A milling cutter having a shank and a cutting head attached to the shank. The cutting head has a plurality of helical teeth, each tooth including a cutting tip, a leading face and a rear face. A flute is defined between the leading face of a trailing tooth, and a rear face of an immediately preceding tooth. A gully of the flute is generally W-shaped in cross section to provide effective chip evacuation. A method for manufacturing the milling cutter with the W-shaped gully of the flute using a split path grinding process is also disclosed.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: June 16, 2020
    Assignee: KENNAMETAL INC.
    Inventors: Leonid Boris Sharivker, Sergei Vladimir Boulakhov
  • Publication number: 20200180047
    Abstract: A cutting insert includes a head portion having a number of cutting edges and a centering pin which is disposed about a central longitudinal axis and which is coupled to, and extends axially away from, the main head portion. The centering pin includes a recess structured to accommodate a portion of a setscrew. The recess includes: a first angled surface disposed generally facing away from a leading end of the centering pin at an acute first angle with respect to the longitudinal axis of the centering pin; and a second angled surface which is positioned opposing the first angled surface at an acute second angle with respect to the longitudinal axis of the centering pin.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 11, 2020
    Applicant: KENNAMETAL, INC.
    Inventors: HORST MANFRED JAGER, RUY FROTA DE SOUZA FILHO
  • Publication number: 20200180048
    Abstract: A tool body (12) for a shell end mill (10) is described with at least one helical chip guiding groove (24) arranged at the circumference of the tool body (12) for chip dissipation and at least two receptacles (28) for indexable cutting inserts (26) arranged at the chip guiding groove (24). In this case, the receptacles (28) each comprise a base surface having a bore for receiving an indexable cutting insert fastening screw (34) and at least one first abutment surface adjacent to the base surface. The transition between the base surface and the first contact surface is a groove. In addition, a cutting tool is described with such a tool body, wherein a two-sided indexable cutting insert (26) is attached in each receptacle (28).
    Type: Application
    Filed: February 10, 2020
    Publication date: June 11, 2020
    Applicant: Kennametal Inc.
    Inventors: Alex Fraese, Mark Alan Francis, Werner Bruno Penkert, Michael Kreuzer
  • Patent number: 10661362
    Abstract: One aspect of the invention provides a cutting tool used for peripheral cutting operations, comprising: a plurality of peripheral cutting edges, and a plurality of flutes disposed between the peripheral cutting edges, wherein each of the flutes includes at least one surface, and at least one depression recessed into the at least one flute surface, wherein each of the depressions defines a depression interior configured to trap cooling liquid during operation of the cutting tool, and wherein at least one of the depressions is dimensioned and disposed to enhance heat dissipation at least one of the peripheral cutting edges.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: May 26, 2020
    Assignee: KENNAMETAL INC.
    Inventors: Sergei Boulakhov, Leonid Sharivker
  • Patent number: 10661358
    Abstract: A tool head for use with a modular shank tool includes at least two preforms. Each preform of the at least two preforms is made separately from the other preform of the at least two preforms from granular materials and then put together and jointly compressed and integrally bonded.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: May 26, 2020
    Assignee: KENNAMETAL INC.
    Inventors: Christoph Gey, Jürgen Schwägerl
  • Patent number: 10662716
    Abstract: Earth boring tools are described herein employing sintered cemented carbide compositions in conjunction with thin-walled architectures. In some embodiments, an earth boring tool comprises a drill bit comprising a cutting portion and a body portion, the body portion including a sintered cemented carbide shell having wall thickness of 5 percent to 25 percent of the drill bit diameter.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: May 26, 2020
    Assignee: KENNAMETAL INC.
    Inventors: Paul D. Prichard, John Brosnahan, Roger Stark
  • Patent number: 10661356
    Abstract: A drilling tool includes at least two chip flutes and a chisel edge with a thinned region. The thinned region merges continuously into the chip flutes in such a way that the thinned region forms the end of the respective chip flute in the region of the chisel edge.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: May 26, 2020
    Assignee: KENNAMETAL INC.
    Inventor: Jurgen Schwagerl
  • Patent number: 10661352
    Abstract: A parting lathe tool for machining metal is described. This has a clamping seat for receiving a cutting insert and an internal coolant supply system for supplying coolant to a cutting zone. In this case, the coolant supply system comprises at least three coolant outlets. The coolant outlets are fluidically connected to a coolant supply port via at least two separate coolant lines running within the parting lathe tool.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: May 26, 2020
    Assignee: KENNAMETAL INC.
    Inventors: Igor Kaufmann, Fabian Birkmann
  • Patent number: 10662518
    Abstract: A material blend for deposition of an abrasion-resistant overlay onto a metal substrate comprising a first metal particle component, a second metal particle component, and a carbide particle component and a method for the application thereof, wherein the overlay process conditions and the homogeneity of tungsten carbide distribution in the overlay are improved.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: May 26, 2020
    Assignee: KENNAMETAL INC.
    Inventors: Thomas Swingley, Kevin Luer, Rodrick Webber, James B. C. Wu
  • Patent number: 10661360
    Abstract: The present invention relates to a rotary cutting tool assembly comprising a toolholder which has a central tool holding receptacle, and a cutting tool which has a holding projection that can be detachably held in the tool holding receptacle and via which the cutting tool is secured to and radially centered on the tool, wherein the holding projection has at its free end a pin-like, first centering section and an adjoining externally threaded section, wherein the holding projection ends in a radially outwardly projecting shoulder having an end face abutment surface, and the tool holding receptacle has an internally threaded section for receiving the externally threaded section and a first centering seat section which is positioned deeper within the tool holding receptacle and in which the centering section of the cutting tool is held.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: May 26, 2020
    Assignee: KENNAMETAL INC.
    Inventor: Frank Funke
  • Publication number: 20200156162
    Abstract: An orbital drill includes a drilling portion, a shank portion, and a neck portion between the drilling portion and the shank portion. The drilling portion includes one or more right-handed spiral flutes with cutting edges having a positive axial rake angle for positive cutting action while orbiting into a material. The right-handed spiral flutes have a positive radial and axial rake angle. The drilling portion also includes one or more left-handed spiral flutes located rearward of the one or more right-handed spiral flutes with cutting edges having a positive axial and radial rake angle for positive cutting action while orbiting back out of the material and removing any material left in the hole, thereby eliminating a separate reaming operation. A method of machining a workpiece using the orbital drill is also disclosed.
    Type: Application
    Filed: November 15, 2018
    Publication date: May 21, 2020
    Applicant: Kennametal Inc.
    Inventors: Danny R. Davis, Stephen G. Pritchard
  • Patent number: 10654110
    Abstract: The present application relates to a cutting tool (2), in particular a boring bar (2) for machining holes (16) separated from each other in an axial direction (4) by a given spacing distance (a), comprising a main body (10) extending in an axial direction (4) with an axis of rotation (R) with at least one cutting element (12), as well as with a number of guide elements (14) for guiding the main body (10) within a guide hole (16A), wherein the guide elements (14) for the axis of rotation (R) are separated by a guide radius (r1), wherein viewed in a cross-section, the main body (10) is divided into a functional region (19) and an eccentric region (20), wherein the cutting elements (12) and the guide elements (14) are arranged distributed over the circumference of the main body (10) over an angular region (?) of less than 180°.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: May 19, 2020
    Assignee: KENNAMETAL INC.
    Inventors: Michael Hacker, Sebastian Kunschir
  • Patent number: 10654117
    Abstract: A cutting tool assembly for milling a rail top, includes a first section and a second section mounted to the first section. Each section includes a plurality of insert-receiving pockets for receiving a plurality of different types of cutting inserts. The plurality of different types of cutting inserts are arranged in a plurality of helical teeth that may be separated by a helical chip flute. In one embodiment, a first type of cutting insert is formed with a radius, R, a second type of cutting insert is formed with a radius, R1, and a third type of cutting insert is formed with a radius, R2, to perform a milling operation on three different areas of the rail top.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: May 19, 2020
    Assignee: KENNAMETAL INC.
    Inventors: Michael David Saffels, Elvin Charles Williams, Floyd Samuel Rosenbaum
  • Patent number: 10646936
    Abstract: A machining tool, in particular a drill carrier tool, includes a monolithic base body extending in the axial direction which, at least in one section, has a porous or grid-like core structure that is encased in a solid outer jacket. These measures allow less material to be used, while maintaining good mechanical properties. The porous or grid-like core structure is simultaneously used for transporting coolant. The base body is manufactured in particular by means of a 3D printing method.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: May 12, 2020
    Assignee: KENNAMETAL INC.
    Inventors: Eduard Ach, Christoph Gey
  • Publication number: 20200102793
    Abstract: A roof drill bit has an elongate roof drill bit body having a forward end and a rearward end. The bit body includes at least one helical twisted surface terminating at a dust port and a feeder ledge proximate the at least one helical twisted surface. A hard insert is affixed to the bit body at the axial forward end thereof. The hard insert includes a plurality of leading cutting edges for cutting the earth strata. The at least one helical twisted surface and the feeder ledge enhance the flow of debris into the dust port.
    Type: Application
    Filed: September 28, 2018
    Publication date: April 2, 2020
    Applicant: Kennametal Inc.
    Inventor: Chad A. Swope
  • Patent number: 10578123
    Abstract: Composite suction liners and associated centrifugal pump architectures are described herein which, in some embodiments, provide enhanced operating lifetimes under abrasive slurry conditions. For example, a composite suction liner includes a suction liner substrate and a monolithic cladding metallurgically bonded to a face of the suction liner substrate, the monolithic cladding comprising metal matrix composite including a hard particle phase dispersed in matrix metal or alloy.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: March 3, 2020
    Assignee: KENNAMETAL INC.
    Inventors: Nathaniel James Yacobucci, Travis E. Puzz, Daniel J. De Wet, Jonathan Bitler
  • Patent number: 10576545
    Abstract: A method for producing a cutting tool is described. This method includes the production of a tool body of the cutting tool by means of a generative production method. At least one coolant cavity that has, at least in segments, an essentially triangular cross section is in this case provided in the tool body. Moreover, a cutting tool produced by means of this method is presented. Also proposed is a cutting tool having at least one coolant cavity running therein, wherein the coolant cavity has, at least in segments, an essentially triangular cross section and the cutting tool is produced, at least in segments, by means of a generative production method.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: March 3, 2020
    Assignee: KENNAMETAL INC.
    Inventor: Sebastian Schleicher
  • Patent number: 10576552
    Abstract: The rotary tool has two coupling parts, namely a carrier and a cutting head having a front end face. The carrier has a pin seat into which a coupling pin of the cutting head is inserted. Effective stop faces are formed on the pin seat and on the coupling pin in the axial direction for axial pull-out protection. For a design that is as simple as possible, in particular in terms of grinding, a side face adjoins a respective stop face of the coupling pin and, when viewed in the axial direction, freely extends to the end face. In particular, the side face forms a torque face. For reliable clamping attachment, in particular with larger nominal diameters (D), a separating slot is made in the carrier and a clamping screw is inserted into it, both of which serve to fix the cutting head in the pin seat.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: March 3, 2020
    Assignee: KENNAMETAL INC.
    Inventors: Horst Manfred Jäger, Michael Schuffenhauer, Jüergen Schwäegerl, Berthold Heinrich Zeug