Patents Assigned to Sandvik Intellectual Property AB
  • Rotary cutting apparatus comprising a cutter drum and an anvil drum
    Patent number: 7849772
    Abstract: A rotary cutting apparatus includes a cutter drum having at least one cutting member and an anvil drum having a rotary axis, arranged in a cutting relationship to one another, and a pressure actuating device for subjecting pressure on said cutting member in relation to the anvil drum. The pressure actuating device includes a pair of levers rotatable about at least one hinge having a horizontal axis. The horizontal axis is parallel to but non-concentric with the rotary axis. In addition, a frame supports the cutter drum and the anvil drum in a rotatable relationship. The pair of levers are releasably connected to the bearing housing, respectively, in such a way that the anvil drum is allowed to be removed from the frame.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: December 14, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventor: Lilian Monteil
  • Method and device for clamping of crushing shell
    Patent number: 7850108
    Abstract: A gyratory crusher includes an outer shell, which should be fastened in a frame included in the crusher, and an inner shell, which is intended to be fastened on a crushing head and to define together with the outer shell a crushing gap for receipt of material to be crushed. Upon fastening of the outer shell a first abutment surface on the outer periphery of the outer shell is brought in a first step to abutment against a first contact surface on the frame. In a second step a spacer member is pressed in for clamping of the outer shell between a second surface on the outer periphery of the outer shell and the frame. A good abutment is provided both at the first abutment. Surface of the outer shell and at the second abutment surface thereof.
    Type: Grant
    Filed: June 11, 2004
    Date of Patent: December 14, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventors: Gert-Åke Olsson, Rolf Silfver, Torbjörn Nilsson Wulff
  • Assembly and method for restricting spinning in a gyratory crusher
    Patent number: 7850103
    Abstract: A crusher system includes a gyratory crusher, which has a crushing head, on which a first crushing shell is mounted; a frame, on which a second crushing shell is mounted; and a driving device, which is arranged to cause, by means of a rotating eccentric, the crushing head to execute a gyratory movement for crushing material. The crusher system includes a device for generating a signal that indicates the current tendency of the crushing head to spin; a device arranged to establish, based on the signal, a maximum allowable rotational speed for the eccentric; and a device arranged to adapt the rotational speed of the eccentric to a rotational speed that is lower than the maximum allowable rotational speed.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: December 14, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventors: Bengt-Arne Eriksson, Johan Gunnarsson
  • Measuring instrument for gyratory crusher and method of indicating the functioning of such a crusher
    Patent number: 7845237
    Abstract: A measuring instrument for indicating the load in a gyratory crusher includes a first measuring device for measuring at least one instantaneous load on the crusher, a second measuring device for measuring the gyrating position of the inner shell relative to the outer shell, and a correlating device adapted to match said at least one instantaneous load on the crusher with a corresponding measured gyrating position of the inner shell relative to the outer shell.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: December 7, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventors: Mauricio Torres, Jonas Gustavsson
  • Cutting tool and a tool part with connecting surfaces with grooves and a method for manufacturing of the tool part
    Patent number: 7845256
    Abstract: A cutting tool of the type that comprises two parts having co-operating connecting surfaces of serration type, which individually include a plurality of ridges or tops, which are mutually separated by grooves, the pitch between the ridges in the respective connecting surfaces being one and the same. According to the invention, the widths of two or more grooves positioned one after the other in a series in one of the connecting surfaces increase progressively from a first groove to a last groove in the series. Furthermore, the invention relates to a tool part as such, as well as a method in the manufacture of such tool parts.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: December 7, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventor: Göran Pantzar
  • USE OF A DUPLEX STAINLESS STEEL IN A PHOSPHORIC ACID PRODUCTION SYSTEM
    Publication number: 20100294472
    Abstract: The present disclosure relates to the use of a duplex stainless steel as heat exchanger material in a phosphoric acid production system using the wet method. The steel has the following composition in percent by weight: C max 0.03 Si max 0.5 Mn max 3 Cr 26-29 Ni 4.9-10 Mo 3-5 N 0.35-0.5 B max 0.0030 Co max 3.5 W max 3 Cu max 2 Ru max 0.3 balance Fe and normal occurring impurities.
    Type: Application
    Filed: October 24, 2008
    Publication date: November 25, 2010
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Sabina Ronneteg, Knut Tersmeden, Anna-Lena Nyström
  • Device and method for milling of materials
    Publication number: 20100296889
    Abstract: Device and method for milling of materials including a milling cutter body including a first end portion and an opposite second end portion. The first end portion is connected to a rotatable spindle and the second end portion is provided with at least one cutting edge. The milling cutter body defines a longitudinal axis and is provided with an axial recess, wherein at least one mass element is arranged in the recess. The axial position of the mass element in relation to the milling cutter body is tuned by use of tuning members included in the device for the tuning of the natural frequency of the device. The mass element is axially locked in relation to the milling cutter body by use of lock members included in the device, in order to optimize the natural frequency of the device for the milling operation in question.
    Type: Application
    Filed: May 17, 2010
    Publication date: November 25, 2010
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Mikael Lundblad, Anders Liljerehn
  • Rotary cutting pick
    Patent number: 7837277
    Abstract: A cutting pick comprises an elongate shank and a cutting tip mounted to one end of the shank. The cutting tip has a leading end, a trailing end and a mounting portion for mounting to the shank. The tip has a shape such that it diverges outwardly in a direction from the leading end to the trailing end to a portion of maximum diameter. An annular sleeve is attached about the shank adjacent to and in non-contacting relationship with the trailing end of the cutting tip. The maximum diameter of the cutting tip is of greater diameter than the diameter of the inner diameter of the annular sleeve so that the portion of maximum diameter overlies the sleeve radially.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: November 23, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventor: Steven Weaver
  • Ceramic cutting insert and a method of manufacturing a ceramic cutting insert
    Patent number: 7837417
    Abstract: A ceramic cutting insert, including a face ground top surface, and at least one peripheral clearance surface adjacent to an edge, from which a reinforcing chamfer surface extends inward. The chamfer surface forms a first acute angle with a reference plane that is parallel to the top surface. A generally concave unground intermediate surface is formed between the top surface and the chamfer surface, the intermediate surface at the transition to the top surface forming a second angle with the top surface that is greater than the first angle, and the width of the chamfer surface being greater than the width of the intermediate surface.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: November 23, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventor: Per Blomstedt
  • PVD-coated cutting tool insert
    Patent number: 7838132
    Abstract: The present invention relates to a coated cutting tool insert of cemented carbide with coating including at least one layer of Ti1-x AlxN deposited by PVD-technique. The layer has x=0.4-0.6 with a compressive residual stress of >4-6 GPa and a thickness of 1.5-5, preferably 2.5-4 ?m. Both the I(111) and I(200) are <7.5, preferably <5, times, the intensity average noise level. Good adhesion despite high compressive stress is obtained if the layer is deposited by cathodic arc evaporation technique at a bias in the range ?90<U<?50V, preferably ?80V<U<?60V.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: November 23, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventors: Mats Ahlgren, Helen Blomqvist
  • THE USE AND METHOD OF PRODUCING A DISPERSION STRENGTHENED STEEL AS MATERIAL IN A ROLLER FOR A ROLLER HEARTH FURNACE
    Publication number: 20100289194
    Abstract: A roller for a roller hearth furnace comprising a dispersion strengthened steel is disclosed. The roller does not require any coating or reconditioning.
    Type: Application
    Filed: October 5, 2007
    Publication date: November 18, 2010
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Dilip Chandrasekaran, Thomas Helander, Thomas Lewin, Thomas Odelstam, Jan Innerman
  • ELECTRIC HEATING DEVICE
    Publication number: 20100290499
    Abstract: Electric heating device comprising a radiant tube and an electrical heating element arranged in the radiant tube as well as a protective insert of electrically conductive material. The protective insert is arranged between the radiant tube and the electrical heating element. The device allows the use of higher element power.
    Type: Application
    Filed: December 10, 2007
    Publication date: November 18, 2010
    Applicant: Sandvik Intellectual Property AB
    Inventor: Thomas Lewin
  • Turning tool and a turning insert
    Patent number: 7832964
    Abstract: A turning tool including a basic body having an insert seat, an indexable turning insert having a triangular basic shape, and a tightening element fixing the turning insert in the insert seat. The insert includes an upperside and an underside between which three side surfaces extend that are situated in a first imaginary, equilateral triangle and therefore converge in pairs at an angle of 60° toward corners in which cutting edges are included. The turning insert is engaged with the insert seat via an interface that includes elongate and straight, female-like and male-like engagement members, which are in engagement with each other in order to prevent turning of the turning insert. The insert seat includes a supporting surface having a corner section against which an active corner of the turning insert is applied.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: November 16, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventors: Claes Andersson, Gunnar Jansson
  • Method and device for igniting and monitoring a burner
    Patent number: 7833011
    Abstract: A method of igniting and monitoring a high speed burner with which a fuel/oxygen-mixture exits at high velocity from a burner head, wherein the length of the flame is governed by the exit velocity of the mixture. The invention is characterized by placing an electrically conductive pipe in and concentrical with the burner channel for the fuel mixture, by causing a first end of the pipe to terminate close to the fuel mixture outlet of the burner head, by electrically isolating the pipe and by causing the detection of light of the group ultraviolet light, visible light and/or infrared light to be detected at the other end of the pipe, and by causing a spark to be generated between the first end of the pipe and the surrounding burner head by application of a voltage, in igniting the burner. A burner is also disclosed.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: November 16, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventors: Bo Jönsson, Kari Korhonen, Pauli Mäenpää, Thomas Lewin
  • FASTENING MEANS FOR TERMINALS FOR ELECTRICAL RESISTANCE ELEMENTS
    Publication number: 20100278208
    Abstract: A suspension arrangement for terminals for electrical resistive elements, which terminals pass vertically through a body and are attached relative to the upper surface of the body, which terminals pass over into the hot zone of the resistive element in the form of a shank element, which extends downwards from the terminals, where one or several of the shanks of the hot zone is or are supported by hooks attached to the lower surface of the body. The suspension arrangement for each one of the terminals includes a first attachment attached relative to the upper surface of the body and a second attachment attached relative to the terminal. A spring arrangement passes between the first and the second attachment, which spring arrangement is arranged such that the second attachment is mobile in the vertical direction relative to the first attachment.
    Type: Application
    Filed: November 26, 2008
    Publication date: November 4, 2010
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventor: Jan Andersson
  • High accuracy in-situ resistance measurements methods
    Patent number: 7825672
    Abstract: Methods to determine an instantaneous resistance value of an electric circuit and a measurement system to determine an instantaneous resistance value of an electric circuit are disclosed. Exemplary embodiments of the method measure an in-situ instantaneous voltage of the circuit and an in-situ instantaneous current of the circuit and calculate the instantaneous resistance. Optional temperature measurement can be included in the method and the calculated instantaneous resistance related to the measured temperature. The method can be applied to phase angle fired loads and to zero-cross (time proportioned) loads.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: November 2, 2010
    Assignees: MRL Industries, Inc., Sandvik Intellectual Property AB
    Inventors: Kevin B. Peck, Noel Johnson, Björn Å. Larsson, Pontus K. H. Nilsson
  • Inner shell intended for a gyratory crusher, and method of attaching such a shell on a crushing head
    Patent number: 7823820
    Abstract: An inner shell has a first part of a lug-notch arrangement, which first part is arranged to co-operate with a second part of the arrangement to prevent rotation of the inner shell relative to a crushing head. The inner shell has a contact surface in its upper portion and is arranged to be pressed towards the lower portion of the crushing head by a pressing force which is obtained by tightening at least two threaded bolts, which are arranged in the upper portion of the crushing head such that their longitudinal direction is substantially parallel to the symmetry axis of the crushing head.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: November 2, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventors: Bengt-Arne Eriksson, Knut Kjaerran, Kjell-Åke Svensson, Ib Mortensen
  • Gyratory crusher, outer shell intended therefore and methods for mounting and dismounting the outer shell
    Publication number: 20100270409
    Abstract: A gyratory crusher has an outer shell, which is attachable in a frame having a frustoconical supporting surface, which is facing obliquely downwards and inwards. The outer shell has on the outer surface a collar, which has outer lugs, which are movable, from below, past the supporting surface and between inner lugs of a ring. The inner and outer lugs have mutually corresponding contact surfaces, which are adapted, by relative rotation of the ring and the outer shell, to be positioned opposite each other and, upon lifting of the ring, to lift also the outer shell so that a lower portion of the outer shell abuts the supporting surface of the frame. The contact surfaces of the inner and outer lugs are arranged such that lifting of the ring causes the outer lugs to be lifted by means of the inner lugs and brings the inner and outer lugs into radial abutment against each other.
    Type: Application
    Filed: April 21, 2010
    Publication date: October 28, 2010
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Bengt-Arne Eriksson, Michael Saarnak
  • Cutting tool with a cemented tungsten carbide insert and ring
    Patent number: D627804
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: November 23, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventors: Joseph Fader, Kenneth Monyak, Daniel Mouthaan
  • Aluminum oxide coated tool
    Patent number: RE41972
    Abstract: There is provided a tool at least partly coated with at least two refractory layers of which one of the said layers is a fine-grained ?-Al2O3-layer which is the top layer along the cutting edge-line and the other a TiCxNyOz- or a ZrCxNy-layer being the top layer on the clearance face. The coated tool exhibits excellent flank and crater wear and high resistance to flaking, particularly when used for machining of low carbon steel and stainless steel. Used cutting edges can easily be identified by the naked eye.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: November 30, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventors: Anders Lenander, Bjorn Ljungberg