Patents Assigned to Sandvik
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Patent number: 7192628Abstract: A substrate is printed with areas of magnetizable ink. The magnetizable ink is compressed into the surface of the substrate, and overprinted to hide it. Suitable inks for the purpose are disclosed. The ink may be permanently magnetized in any of a variety of patterns.Type: GrantFiled: May 1, 2003Date of Patent: March 20, 2007Assignee: Sandvik Innovations LLCInventor: Roger I. Burrows
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Patent number: 7191060Abstract: A method for automatically guiding a mining machine (14) provided with a route determined as successive route determined as successive route points in the mine. In the method, data relating to the successive points are used for determining additional route between the successive route points for guiding the mining machine (14).Type: GrantFiled: September 22, 2005Date of Patent: March 13, 2007Assignee: Sandvik Tamrock OyInventor: Hannu Mäkelä
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Patent number: 7189039Abstract: A tool assembly includes first and second tool bodies, a tool coupling interconnecting the tool bodies, and a drawing member for drawing the tool bodies together along a common longitudinal axis. The tool coupling includes a male portion disposed on one of the tool bodies, and a female portion disposed on the other of the tool bodies. The male portion has a plurality of tongues spaced apart around the axis, the tongues being flexible in a radial direction with reference to the longitudinal axis. The female portion has a non-circular recess defining a plurality of corner portions receiving respective ones of the flexible tongues for radially steering the tool bodies during axial mating thereof.Type: GrantFiled: January 28, 2003Date of Patent: March 13, 2007Assignee: Sandvik Intellectual Property ABInventor: Göran Pantzar
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Patent number: 7185721Abstract: A male portion for percussive rock drilling includes sections of reduced cross-sectional area. At least one thread for percussive rock drilling is provided at an end of the male portion. The end of the male portion comprises an abutment surface for the transfer of impact waves. The length of the portion is defined as the length of an imaginary cylinder from a plane of the impact surface to a point where the plane ceases to contact a crest of the thread, wherein the length divided by the external diameter of the cylinder lies within a range of 1–2.Type: GrantFiled: June 26, 2003Date of Patent: March 6, 2007Assignee: Sandvik Intellectual Property ABInventors: Bo Carlström, Anders Brungs, Christer Lundberg, Per-Olof Liljebrand
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Patent number: 7186370Abstract: A copper-base alloy with increased melting point above 1000° C., which is resistant or immune to carburization, metal dusting and coking, resistant to oxidation at elevated temperatures. The alloy has the following composition (in weight-%): Al 4–15, Si 0.1–6, Mo 0.5–40, W 0–40, where the total of Mo and W do not exceed 40%, one or more of the group of Rare Earth Metals (REM), such as yttrium, hafnium, zirconium, lanthanum and/or cerium, up to 1.0 weight-% of each element or a total of maximum 3.0 weight-%, Cu balance and normally occurring alloying additions and impurities. A method for the alloy's production, and the alloy's use as construction components in CO-containing atmospheres, ammonia containing atmospheres, and/or hydrocarbon containing atmospheres or solid carbon containing processes, are also disclosed.Type: GrantFiled: August 20, 2004Date of Patent: March 6, 2007Assignee: Sandvik Intellectual Property ABInventors: Mats Lundberg, Johan Hernblom, Kenneth Göransson, Peter Szåkalos
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Patent number: 7182159Abstract: A drill member for percussive rock drilling is formed by forming a compound component and friction welding the compound component to the end of a drill rod. The compound component is formed by welding a core part within a shell part and machining a thread into either the shell part (male thread) or core part (female thread). The part in which the thread is machined is formed of low alloy steel, and the other part is formed of stainless steel, wherein the thread bottom is formed of stainless steel, and the thread crests are formed of low alloy steel.Type: GrantFiled: February 18, 2003Date of Patent: February 27, 2007Assignee: Sandvik Intellectual Property ABInventor: Johan Linden
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Publication number: 20070042304Abstract: The present invention relates to a method relating to the operation of a burner and/or cooler (3), wherein gases are caused to flow through an inner pipe (7), out into an outer pipe (5) which surrounds the inner pipe (7), and back through that part of the volume of the outer pipe (5) not accommodated by the volume of the inner pipe (7). The invention is characterised by placing an inner bottom plates (8) in the outer pipe (5) in spaced relationship with the closed bottom (9) of said outer pipe (5), whereby the gases flowing through the inner pipe (7) and out into the outer pipe (5) are caused to turn back and pass between the outer pipe (5) and the inner pipe (7), thereby creating a gas pocket (12) between the bottom (9) of said outer pipe (5) and the bottom plate (8).Type: ApplicationFiled: December 4, 2003Publication date: February 22, 2007Applicant: SANDVIK INTELLECTUAL PROPERTY HBInventor: Thomas Lewin
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Patent number: 7178447Abstract: The invention relates to a control valve, a percussion device and a method of controlling a working cycle of a percussion device. A percussion device (1) for breaking rock includes an impact element (8) controlled by a control valve (2). The control valve includes a control element (5) arranged to control channels (7b) leading to a working pressure surface (9) of the impact element (8). The control element, during a working cycle of the control valve, is arranged to open and close pressure channels at several connecting moments so that during one working cycle of the valve, several impact pulses are arranged to be produced.Type: GrantFiled: February 23, 2004Date of Patent: February 20, 2007Assignee: Sandvik Tamrock OyInventors: Antti Koskimäki, Markku Keskiniva, Jorma Mäki, Mauri Esko, Erkki Ahola, Aimo Helin
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Patent number: 7175798Abstract: An improved cutting tool insert and a method for the preparation of such cutting tool insert, having a sintered alumina and silicon carbide whisker composite material body, comprising the steps of milling and mixing the powdered starting materials of said composite material and forming said material into a preformed workpiece, heating up said workpiece at a heating rate of from about 20 to about 60° C. per minute to a sintering temperature of between from about 1600 to about 2300° C., and holding at said sintering temperature for a holding time of from about 5 to about 60 minutes at a pressure of between from about 20 to about 100 MPa.Type: GrantFiled: January 26, 2004Date of Patent: February 13, 2007Assignee: Sandvik Intellectual Property ABInventor: Gunnar Brandt
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Patent number: 7175370Abstract: An indexible cutting bit includes an upper side of polygonal contour defining at respective corners thereof a secondary cutting edge which extends between first and second main cutting edges. The secondary cutting edge includes, in order of closeness to the first main cutting edge: a convexly curved transition first portion extending from an end of the first main cutting edge, a concavely curved second portion of a second radius, a convexly curved third portion of a third radius, a concavely curved fourth portion of a fourth radius, a convexly curved fifth portion of a fifth radius, a concavely curved sixth portion of a sixth radius, and a convexly curved transition seventh portion extending to the second main cutting edge.Type: GrantFiled: May 25, 2005Date of Patent: February 13, 2007Assignee: Sandvik Intellectual Property ABInventor: Stefan Scherbarth
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Patent number: 7172256Abstract: A cutting pick includes an elongate shank, a cutting tip fixed to one end of the shank to project from that end and which is of a material that is harder than the material of the shank, and an annular sleeve which is attached about the shank adjacent the cutting tip. The sleeve is of a material (e.g., tungsten carbide) which is harder than the material of the shank and which has a lower propensity for incendive spark production during a cutting operation than the material of the shank. The sleeve includes a plurality of annular sleeve portions which are attached about the shank immediately adjacent to each other.Type: GrantFiled: May 14, 2004Date of Patent: February 6, 2007Assignee: Sandvik Intellectual Property ABInventors: Keith Sleep, Steven Weaver
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Publication number: 20070024104Abstract: A retainer sleeve for retaining a rotary bit includes a longitudinally slit cylindrical portion defining a longitudinal axis, and at least four circumferentially spaced tabs deformed generally radially inwardly from the cylindrical portion. The sleeve is formed from a sheet of spring steel having a thickness of at least 0.048 inches. Each tab comprises a connector section inclined from the cylindrical portion in a generally radially inward and longitudinally rearward direction and a keeper section extending rearwardly from a free end of the connector section. The keeper section includes a first flat surface facing the axis and oriented parallel thereto, and a second flat surface facing rearwardly and oriented perpendicularly to the axis.Type: ApplicationFiled: July 26, 2005Publication date: February 1, 2007Applicant: SANDVIK INTELLECTUAL PROPERTY ABInventors: Kenneth Monyak, Daniel Mouthaan
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Patent number: 7166823Abstract: A method for the production of a heating element that is composed essentially of molybdenum silicide and alloys of that basic material, and a heating element formed from such material. A material is produced that contains substantially Mo(Si1-xAlx)2 and Al2O3 by mixing a molybdenum aluminum silicide Mo(Si1-yAly)2 with bentonite clay in a known manner. The bentonite clay contains impure or contaminating substances with which molybdenum silicide cannot be alloyed and with which the symmetry of the crystal lattice of the molybdenum silicide is retained with a combined content of less than 2000 ppm.Type: GrantFiled: March 6, 2003Date of Patent: January 23, 2007Assignee: Sandvik Intellectual Property AktiebolagInventors: Mats Sundberg, Hans Pettersson
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Patent number: 7164103Abstract: An electrical resistance heating element having a glow zone and two power supply terminals. The glow zone of the element is tubular. A tubular union is provided between each of the power supply terminals and a respective end of the glow zone, wherein the inner diameter of the union is smaller than the inner diameter of the glow zone. A transition region extends between each union and a respective glow zone end and has a progressively decreasing wall thickness in the direction from the union toward the glow zone.Type: GrantFiled: March 7, 2003Date of Patent: January 16, 2007Assignee: Sandvik Intellectual Property AktiebolagInventors: Jan Andersson, Emil Eriksson, Jörgen Sahlström
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Patent number: 7157044Abstract: A titanium based carbonitride alloy contains Ti, Nb, W, C, N and Co. The alloy also contains, in addition to Ti, Co with only impurity levels of Ni and Fe, 4–7 at % Nb, 3–8 at % W and has a C/(C+N) ratio of 0.50–0.75. The Co content is 9–<12 at % for general finishing applications and 12–16% for semifinishing applications. The amount of undissolved Ti(C,N) cores must 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 invented alloy is particularly useful for semifinishing of steel and cast iron.Type: GrantFiled: October 7, 2003Date of Patent: January 2, 2007Assignee: Sandvik Intellectual Property ABInventors: Ulf Rolander, Marco Zwinkels, Gerold Weinl
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Patent number: 7152692Abstract: A hydraulic hammer having a sealing bushing includes a percussion piston that delivers strokes to a tool. A lower part of the percussion piston is sealed with respect to a frame by the sealing bushing, which includes one or more lower seals. The sealing bushing does not contribute to the bearing of the percussion piston and it is arranged in place through the lower end of the hydraulic hammer.Type: GrantFiled: February 1, 2005Date of Patent: December 26, 2006Assignee: Sandvik Tamrock OyInventors: Arvo Hurskainen, Esko Juvonen
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Patent number: 7152822Abstract: A gyratory crusher includes a first shell having a support surface intended to abut against a shell-carrying member, and a first crushing surface intended to be brought into contact with material fed into the upper portion of the crusher, to crush the material against a corresponding second crushing surface disposed on a second shell arranged opposite the first shell. The first and second crushing surfaces oppose one another in spaced relationship to form a gap through which the material travels as it is being crushed. The gap includes an upper inlet and a lower outlet. Over at least 50% of the vertical height, from the outlet upwards toward the inlet, the first crushing surface is machined to a run-out tolerance, which on each level along the machined part of the vertical height does not exceed one thousandth of the largest diameter of the first crushing surface, or 0.5 mm, whichever is less.Type: GrantFiled: November 8, 2004Date of Patent: December 26, 2006Assignee: Sandvik Intellectual Property ABInventor: Magnus Evertsson
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Patent number: 7153071Abstract: A device for chip forming machining including first and second rotatable bodies arranged along a common axis of rotation. The first body forms a male element, and the second body forms a female element into which the male element is threaded for forming a threaded joint. The male element has an outer circumferential area displaced in the axial direction in relation to the thread thereof and which engages a corresponding inner circumferential area of the female element by a press-fit. One or both of those circumferential areas has an out-of-roundness, such that there occurs a press-fit along two or more preselected regions in the circumferential direction.Type: GrantFiled: June 17, 2003Date of Patent: December 26, 2006Assignee: Sandvik Intellectual Property ABInventors: Patrik Blomberg, Ake Danielsson
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Patent number: 7153562Abstract: The present invention relates to a cutting tool insert particularly for turning of steel comprising a cemented carbide body, a coating with a post treatment with a first, innermost layer system of one or several layers of TiCxNyOz with x+y+z?1 with a total thickness of 0.7–4.5 ?m a second multilayer system consisting of a totally 5–31 alternating Al2O3 and TiCxNyOz (x+y+z?1), preferably ?-Al2O3 and TiN, the Al2O3-layers having an individual layer thickness of <0.5 ?m and the TiCxNyOz-layers 0.01–0.2 ?m with a total thickness of the multilayer of 1.0–4.0 ?m. The multilayer is exposed along the edge line and into the rake and flank face, at least 0.02 mm, from the edge line on the rake face, preferably the contact length of the chip at most 0.9 mm, and 0.02–0.20 mm on the flank face.Type: GrantFiled: January 21, 2004Date of Patent: December 26, 2006Assignee: Sandvik Intellectual Property ABInventors: Markus Rodmar, Mikael Lindholm, Anders Jonsson, Gunilla Andersson, Anders Nordgren, Mikael Lagerquist
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Patent number: 7150588Abstract: A thread-forming tap includes an elongated body having, at first end, a connector portion, and having at a second end, a thread-forming portion. The thread-forming portion includes at least one thread-forming helical thread exhibiting a non-circular cross-section having at least three lobes for plastically deforming an interior wall of a workpiece while forming an internal thread therein. A thread relief portion formed by a helical truncated thread, is disposed between the thread-forming thread and a terminal end of the body. Disposed at the end of the elongated body is at least one radially extending cutting edge for cutting parts of the workpiece interior wall.Type: GrantFiled: May 22, 2002Date of Patent: December 19, 2006Assignee: Sandvik Intellectual Property ABInventor: Björn Håkansson
