Patents Assigned to Sandvik Intellectual Property
  • Down-the-hole hammer and components for a down-the-hole hammer, and a method of assembling a down-the-hole hammer
    Patent number: 7353890
    Abstract: A down-the-hole hammer includes a casing and a piston movable in the casing between a lowermost operating position and an uppermost operating position. A recess is provided between the piston and the casing so that the piston and the casing define an intermediate chamber between a top end of the piston and a bottom end of the piston. A passageway is provided between a source of pressurized fluid and the intermediate chamber such that, at all positions of the piston between the lowermost and the uppermost operating positions, the source of pressurized fluid is in flow communication with the intermediate chamber through the passageway. An opening in the piston at least partially defines the passageway.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: April 8, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventor: Matthew Floyd Shofner
  • Crusher and a method of crushing material
    Patent number: 7350725
    Abstract: A method of crushing material includes the steps of feeding a first flow of material to be crushed to a rotor rotating around a vertical axis, the rotor accelerating the first flow of material towards an impact wall section, and feeding a second flow of material to be crushed into the path of the accelerated first flow of material. The second flow of material is fed in a direction having a substantially tangential component in relation to the rotor, such that the second flow of material will have a substantially tangential component of movement in relation to the rotor when reaching the path of the first flow of material. A crusher is adapted to feed the second flow of material such that it will have a substantially tangential component of movement in relation to the rotor when reaching the path of the first flow of material.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: April 1, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Rowan Dallimore, George Fensome, Knut Kjaerran, Sven-Henrik Norman
  • Method and apparatus for making a rotary tool for chip removing machining
    Patent number: 7340978
    Abstract: A method for manufacturing a rotary tool for chip removing machining with at least one chip flute that extends in the longitudinal direction of the tool. The method involves preparing a mixture of a cemented carbide, cermet or ceramics powder and a carrier, such as a polymer, and placing the mixture in an extruding machine. The mixture is extruded in a feed direction by means of a die to form the diameter of the mixture body. The mixture body passes against a chisel which forms a chip flute in the outer periphery of the mixture body by chip-removing machining. When the chisel is displaced away from the mixture body, a non-fluted shaft portion is formed. By rotating the mixture body while contacted by the chisel, a helical chip flute can be formed. Alternatively, the body could be twisted after a straight flute has been formed, whereupon the flute becomes helical.
    Type: Grant
    Filed: July 2, 2004
    Date of Patent: March 11, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Jören Kugelberg, Roine Ericsson, Jonathan Fair, Anders Micski
  • Shell for a gyratory crusher and a gyratory crusher
    Patent number: 7338000
    Abstract: An inner shell, which is intended for use in a gyratory crusher and which during crushing will rotate around its own center axis in a first direction, has at least one additional crusher surface. The additional crusher surface has, in horizontal projection and as seen in the first direction, a decreasing distance to the center axis. Large objects can be introduced between the additional crusher surface and an outer shell near a first end of the additional crusher surface in order to, near a second end of the additional crusher surface, be squeezed between the additional crusher surface and the outer shell and be crushed.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: March 4, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Torbjörn Nilsson-Wulff, Christian Trulsson, Richard Bern, Björn Loven, Rolf Silfver
  • Ti(C,N)-(Ti,Nb,W)(C,N)-Co alloy for milling cutting tool applications
    Patent number: 7332122
    Abstract: A titanium based carbonitride alloy containing Ti, Nb, W, C, N and Co. The alloy also contains, in addition to Ti, 9-14 at % Co with only impurity levels of Ni and Fe, 1-<3 at % Nb, 3-8 at % W and has a C/(C+N) ratio of 0.50-0.75. The amount of undissolved Ti(C,N) cores should be kept between 26 and 37 vol % of the hard constituents, the balance being one or more complex carbonitrides containing Ti, Nb and W. The alloy is particularly useful for milling of steel.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: February 19, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Gerold Weinl, Ulf Rolander, Marco Zwinkels
  • Rock drill bit and a thread joint therefor
    Patent number: 7325633
    Abstract: A drill bit intended for percussive rock drilling is formed to reduce the occurrence of cavitation during percussive drilling. The drill bit includes an integral skirt and at least one channel for transport of flush medium, such as water. The drill bit has a front face provided with buttons, which define a greatest first external diameter (D0). A recess with a female thread, such as a rope or trapezoid thread for percussive drilling, extends into the drill bit from a rear end face of the drill bit. The recess has an axial depth (L0). The external surface of the skirt includes a conical portion having an axial extension that is greater than one-eighth of the depth (L0) of the recess but smaller than the depth (L0) of the recess.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: February 5, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Johan Lindén, Bo Carlström
  • Edge-carrying drill body having an internal chip-removal channel
    Patent number: 7326009
    Abstract: An edge-carrying drill body intended for deep hole drilling, is rotatable around a central geometric axis and comprises a through-channel arranged for internal chip evacuation. The channel mouths in front and rear ends of the drill body. A front channel mouth is bridged-over by a bridge on which a plurality of cutting edges are formed, which edges are made integrally with the rest of the bridge. The front mouth includes inlets disposed in front of respective cutting edges with reference to the direction of rotation of the body.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: February 5, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventor: Stefan Lindblom
  • Edge-carrying drill, method for the manufacture of the drill, and drilling tool comprising such a drill
    Patent number: 7320565
    Abstract: In a first aspect, the invention relates to an edge-carrying drill body (1) of the type that is intended for deep hole drilling, and which is rotatable around a geometric axis (C) as well as comprises a through channel (2) arranged for internal chip evacuation, which channel mouths in front and rear ends of the body. Characteristic of the invention is that one or more cutting edges (4) are made integrally with the rest of the body, more precisely from a hard material, such as cemented carbide or CERMET. In a second aspect, the invention also relates to a method for the manufacture of such a drill body. In a third aspect, the invention furthermore relates to a drilling tool for deep hole drilling.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: January 22, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Åke Danielsson, Bengt Silver
  • Oxide coated cutting tool
    Patent number: 7306636
    Abstract: The present invention relates to a method of depositing a crystalline ?-Al2O3-layer onto a cutting tool insert by Chemical Vapor Deposition at a temperature of from about 625 to about 800° C. The method comprises the following steps: depositing a from about 0.1 to about 1.5 ?m layer of TiCxNyOz where x+y+z>=1 and z>0, preferably z>0.2; treating said layer at 625-1000° C. in a gas mixture containing from about 0.5 to about 3 vol-% O2, preferably as CO2+H2 or O2+H2, for a short period of time from about 0.5 to about 4 min, optionally in the presence of from about 0.5 to about 6 vol-% HCl; and depositing said Al2O3-layer by bringing said treated layer into contact with a gas mixture containing from about 2 to about 10 vol-% of AlCl3, from about 16 to about 40 vol-% of CO2, in H2 and 0.8-2 vol-% of a sulphur-containing agent, preferably H2S, at a process pressure of from about 40 to about 300 mbar.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: December 11, 2007
    Assignee: Sandvik Intellectual Property AB
    Inventor: Bjorn Ljungberg
  • Tool for chip-removing machining
    Patent number: 7300232
    Abstract: A tool for chip-removing machining includes a holder on which in indexible cutting insert is mounted. The holder includes a first base surface on which a plurality of male parts are disposed to define an insert seat. The insert includes generally parallel second and third base surfaces, each having a plurality of female parts disposed therein. The insert is invertible such that the female parts of one of the second and third base surfaces receive respective male parts of the holder. A fastener secures the insert on the seat, with the male parts tightly fitted in the female parts. The male parts are flexible relative to the first base surface to ensure a firm abutment of the male parts with surfaces of respective female parts.
    Type: Grant
    Filed: November 23, 2004
    Date of Patent: November 27, 2007
    Assignee: Sandvik Intellectual Property AB
    Inventors: Jörgen Wiman, Kjell Englund
  • Member for holding a wear part of a crusher
    Patent number: 7300009
    Abstract: A holding member for holding a horizontal wear plate in position on a rotor for a vertical shaft impact crusher. The holding member includes a holding part for holding the wear plate and a fixing mechanism for releasably fixing the holding member to a vertical wall segment of the rotor such that the wear plate bears against a first side of the wall segment.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: November 27, 2007
    Assignee: Sandvik Intellectual Property AB
    Inventors: Rowan Dallimore, Bjorn Loven
  • Rock drill bit having outer and inner rock-crushing buttons
    Patent number: 7296641
    Abstract: A rock drill bit for percussive drilling includes a front face which has radially outer and inner portions. Fluid channels are disposed in the head portion in communication with the inner portion of the front face. The inner portion of the front face carries a plurality of front buttons. The outer portion comprises circumferentially spaced steel portions which are axially raised relative to the inner portion. Each raised portion carries one or two peripheral buttons located radially outwardly of an imaginary circle which intersects at least two of the front buttons and at least two of the flushing channels. The imaginary circle is arranged coaxially relative to the center axis.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: November 20, 2007
    Assignee: Sandvik Intellectual Property AB
    Inventors: Per-Ola Hadin, Fredrik Björk
  • Vibrating screen for screening crushed stone and gravel
    Patent number: 7296685
    Abstract: A vibrating screen for conducting material in a longitudinal direction while screening the material comprises a screening deck, exchangeable modular screening media, and an adapter arrangement for mounting the screening media on the deck. The screening deck includes transverse carriers oriented transversely of the longitudinal direction. The adapter arrangement comprises longitudinal support carriers arranged substantially in the longitudinal direction, and connecting elements oriented transversely of the longitudinal direction for interconnecting the support carriers and connecting the interconnected support carriers on the transverse carriers.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: November 20, 2007
    Assignee: Sandvik Intellectual Property AB
    Inventor: Mats Malmberg
  • Coated grooving or parting insert
    Patent number: RE39986
    Abstract: The present invention relates to a coated cutting tool insert useful for grooving or severing steel components such as steel or stainless steel tubes and bars. The insert is characterized by WC—Co-based cemented carbide substrate having a highly W-alloyed Co-binder phase and a relatively thin coating including an inner layer of TiCxNyOz with columnar grains followed by a layer of fine grained ?—Al2O3 and a top layer of TiN.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: January 1, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Ingrid Reineck, Torbjorn Selinder, Anders Piirhonen, Gregor Kullander
  • Coated turning insert
    Patent number: RE39987
    Abstract: A coated turning insert particularly useful for turning of forged components of stainless steel low alloyed steel. The insert is characterized by a WC-Co cemented carbide body having a highly W-alloyed Co-binder phase and a coating including an innermost layer of TiCxNyOz with columnar grains and a top layer of fine grained ?-Al2O3.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: January 1, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Bjorn Ljungberg, Leif Åkesson
  • Coated turning insert and method of making it
    Patent number: RE39999
    Abstract: A coated turning insert particularly useful for turning in stainless steel is disclosed. The insert is characterized by a WC—Co-based cemented carbide substrate having a highly W-alloyed Co-binder phase and a coating including an inner layer of TiCxNyOz with columnar grains followed by a layer of fine-grained, ?-Al2O3 and a top layer of TiN. The layers are deposited by using CVD methods.
    Type: Grant
    Filed: November 29, 1996
    Date of Patent: January 8, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Per Lindskog, Per Gustafson, Björn Ljungberg, Åke Östlund
  • Coated cutting insert
    Patent number: RE40005
    Abstract: There is disclosed a coated cutting insert particularly useful for cutting in cast iron materials. The insert is characterized by a straight WC-Co cemented carbide body having a highly W-alloyed Co binder phase, a well-defined surface content of Co and a coating including an innermost layer of TiCxNyOz with columnar grains, a layer of a fine-grained, textured Al2O3 layer and a top layer of TiCxNyOz that has been removed along the cutting edge line.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: January 15, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Asa Kutscher, Kenneth Westergren, Björn Ljungberg, Anders Lenander
  • Coated grooving or parting insert and method of making same
    Patent number: RE40025
    Abstract: The present invention relates to a coated cutting tool (e.g.—cemented carbide insert) useful for grooving or parting of steel or stainless steel components such as tubes and bars. The insert is characterised by a WC-Co-based cemented carbide substrate having a highly W-alloyed Co-binder phase and a hard and wear resistant coating including a multilayered structure of sublayers of the composition (TixAl1-x)N with a periodic and repeated variation of the Ti/Al ratio.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: January 22, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Anders Jonsson, Anders Piirhonen, Torbjörn Selinder, Gregor Kullander
  • Cemented carbide insert for turning, milling and drilling
    Patent number: RE40026
    Abstract: There is disclosed a cemented carbide insert with excellent properties for machining of steels and stainless steels. The cemented carbide comprises WC and 4-25% Co. The WC-grains have an average grain size in the range 0.2-3.5 ?m and a narrow grain size distribution in the range 0-4.5 ?m. According to the method of the invention a cemented carbide cutting tool insert is made by mixing powders of WC, TiC, TaC and/or NbC, binder metal and pressing agent, drying preferably by spray drying, pressing to inserts and sintering. The method characterised in that a deagglomerated WC-powder with a narrow grain size distribution is used, that the powders of TiC, TaC and/or NbC are deagglomerated and that the mixing is wet mixing with no change in grain size or grain size distribution.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: January 22, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Mats Waldenstrom, Ake Ostlund, Ove Alm
  • Coated inserts for rough milling
    Patent number: RE40082
    Abstract: Coated milling insert has a WC—Co cemented carbide with a low content of cubic carbides and a highly W-alloyed binder phase and a coating including an inner layer of TiCxNy with columnar grains followed by a layer of ?-Al2O3 and a top layer of TiN. The coated milling insert is particularly useful for milling of grey cast iron with or without cast skin under wet conditions at low and moderate cutting speeds and milling of nodular cast iron and compacted graphite iron with or without cast skin under wet conditions at moderate cutting speeds.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: February 19, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Anders Nordgren, Ingemar Hessman, Marian Mikus
  • Washer/dryer frame construction
    Patent number: 4989426
    Abstract: A support structure for a vertically arranged combination household appliance, more particularly a front loading dryer assembly arranged above a top loading washer assembly, includes vertical main support members, horizontal members and other members. The structure adequately supports both appliance assemblies of the combination appliance during transportation and usage, provides improved operating performance during off balance washer spin conditions or dryer tumbling, and maintains unitary appliance characteristics by being an integral part of the combination appliance design and by being located entirely interior to the appliance cabinetry.
    Type: Grant
    Filed: May 8, 1990
    Date of Patent: February 5, 1991
    Assignee: Whirlpool Corporation
    Inventors: Gerald L. Kretchman, James R. Mulder, Carl E. Eichman, James I. Czech