Patents Examined by J. Reed Batten, Jr.
  • Patent number: 6202734
    Abstract: The apparatus comprises a device for supplying molten metal, a device for heating molten metal such that it remains fluid while within the apparatus, a device for applying a magnetic field in a direction perpendicular to the device for supplying molten metal, a device for transmitting electric current directly through molten metal to exert a force in a first direction on molten metal, where the device for transmitting can reverse the direction of the current to a second direction, opposite of the first direction, to form a droplet of molten metal, and a receiver for the droplet where the accumulation of a multitude of droplets upon the receiver results in the formation of the desired metal part. The mixing chamber can include a rotary electrode arrangement which mixes the molten metal by movement.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: March 20, 2001
    Assignee: Sandia Corporation
    Inventors: Philip A. Sackinger, Marcelino Essien, Henry C. Peebles, Eric M. Schlienger
  • Patent number: 6192971
    Abstract: A sealing device for a casting table of a machine for the continuous vertical casting along a vertical extraction axis (X—X) of cast iron pipes (T) includes a die block (5) aligned with the vertical extraction axis and a device (3) for the supply of liquid iron. Two sealing gaskets (12A, 12B) are located between the outlet from the device supplying liquid iron and the entry to the die block. The sealing device has members (6, 15, 21) for tightening the die block against the outlet of the supply device, parallel to the vertical extraction axis, in order to tighten the sealing gaskets.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: February 27, 2001
    Assignee: Pont-A-Mousson
    Inventors: Denis Girardin, Fabien Arnould, Yvan Morcel
  • Patent number: 6192973
    Abstract: The cast steel strip must be supported, particularly after the casting device, to reduce stresses and mechanical deformations. A flexible support element, in particular, a chain with rolls, whose length can be changed by suitable adjustment devices, is arranged for the purpose of support after the casting device.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: February 27, 2001
    Assignee: Mannesmann AG
    Inventors: Klaus Schwerdtfeger, Karl-Heinz Spitzer, Ulrich Urlau, Dietmar Franke, Bernfried Stache, Joachim Kroos, Heino Buddenberg
  • Patent number: 6189599
    Abstract: A method and machine for forming an open riser in a mold includes a resiliently compressible plug received into the upper end of a riser sleeve, which projects above the riser sleeve and cope sand level so as to be advanced into the riser sleeve during squeezing of the mold sand. The plug is fixed to the upper squeeze plate to be withdrawn from the riser sleeve as the squeeze plates are separated, creating an open riser.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: February 20, 2001
    Inventor: Paul E. Hanna
  • Patent number: 6186217
    Abstract: A plurality of individual thin wall, arcuate (e.g. airfoil shaped) core elements are formed in respective master dies to have integral interlocking locating features, the individual core elements are prefired in respective ceramic setter supports to have integral locating features, the prefired core elements are assembled together using the locator features of adjacent core elements, and the assembled core elements are adhered together using ceramic adhesive introduced at internal joints defined between mating interlocked locating features. The multi-wall ceramic core assembly so produced comprises the plurality of spaced apart thin wall, arcuate core elements and joined together by at the internal joints defined between the adhered interlocked locating features.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: February 13, 2001
    Assignee: Howmet Research Corporation
    Inventors: William E. Sikkenga, Charles F. Caccavale
  • Patent number: 6176295
    Abstract: The plate mold has water-cooled narrow side walls that can be clamped between broad side walls. The broad side walls have at least three adjacent and mutually independent cooling segments. The cooling segments are divided symmetrically relative to the central axis of the mold and have, in the region of the mold mouth, separate connections for the independent supply of a liquid coolant. The apparatus includes temperature sensors, an oscillation device, an actuator for adjusting the space between the narrow and broad side walls and a control device connected to the temperature sensors to control the oscillation device and the actuator.
    Type: Grant
    Filed: March 11, 1998
    Date of Patent: January 23, 2001
    Assignee: Mannesmann Aktiengesellschaft
    Inventor: Fritz-Peter Pleschiutschnigg
  • Patent number: 6176297
    Abstract: An adjustment device for adjusting the position of at least one strand supporting element (5) relative to a supporting stand (9, 10) carrying at least one further strand supporting element (6), of a strand guide in a continuous casting plant comprises at least one hydraulic adjustment cylinder (12) contacting a strand supporting element (5) directly or indirectly on the one side and the supporting stand (9, 10) carrying a further strand supporting element (6) on the other side, the movement of the strand supporting element (5) being detectable via a position sensor (17) and controllable by means of an automatic controller (26). In order to safely attain the high precision in positioning the strand supporting elements (5, 6) sought for a strand guide at yet a minimum expenditure and a minimum susceptibility to failure, at least one directional control valve (21A, 21B) capable of being switched via a three-level controller (26) is provided for actuating the hydraulic adjustment cylinder (12) FIG. 2.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: January 23, 2001
    Assignee: Voest-Alpine Industrieanlagenbau GmbH
    Inventors: Karl Mörwald, Helmut Fitzel, Kurt Engel, Horst F{umlaut over (u)}rhofer, Rudolf Scheidl, Reinhard Brandstetter
  • Patent number: 6176296
    Abstract: The apparatus includes a molding flask having at least one bar and a squeeze board having a pressing member. The pressing member has at least one vent hole, and defines at least one groove that divides the pressing member into at least two parts. Each groove is positioned and shaped such that it corresponds to the position and shape of one bar. The apparatus also includes an actuator-connecting member to which each part of the pressing member is attached, and an actuator that vertically moves each part of the pressing member.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: January 23, 2001
    Assignee: Sintokogio, Ltd.
    Inventor: Hirofumi Asai
  • Patent number: 6173757
    Abstract: A molding material is forced by a shooting device (3) into an openable tool (4) and solidified therein to a component of a mold (2)—a core or shell. The mold component (2) is removed when the tool (4) is open, and subsequently handled in any desired sequence, transported, and, if need be completed to a core assembly (1). The tools (4) are measured in a noncontacting manner in the region of the shooting device (3) and/or manipulators (5) and/or processing stations (6) and/or storage areas (7) and/or conveying paths (8), that the measured data are supplied to a computer (9), if need be, processed therein, and compared with stored desired values, and that the tools (4) are identified as defective, when a predeterminable or definable deviation from the desired values is detected.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: January 16, 2001
    Assignee: Adolf Hottinger KG
    Inventor: Walter L. Pöhlandt
  • Patent number: 6173756
    Abstract: A broad side element for slab mold and including a cast plate having opposite inner and outer surfaces and a plurality of grooves provided on the inner surface for forming cooling channels and having each an undercut, and a plurality of inserts receivable in the undercuts of respective cooling channel-forming grooves for formlockingly covering the respective grooves, with the broad side element having upper and lower regions, and with at least the upper region having a middle portion and two side portions located on opposite sides of the middle portion.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: January 16, 2001
    Assignee: SMS Schloemann-Siemag AG
    Inventor: Gereon Fehlemann
  • Patent number: 6170558
    Abstract: The apparatus comprises at least one flowing furnace with which at least one handling unit cooperates, the handling unit being selectively connectable to a respective die. The at least one handling unit is associated with a guide for horizontal translatory motion between a casting position, which lies above the at least one furnace, and a discharge position. The at least one furnace can move vertically in order to couple and uncouple with respect to the corresponding die connected to the at least one handling unit.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: January 9, 2001
    Assignee: IMR S.p.A.
    Inventor: Fabio Giolo
  • Patent number: 6158495
    Abstract: In the venting valve device for die-casting, the evacuation valve which is intended to be closed comprises an evacuation piston and is actuatable by a pneumatic control piston which is in the form of a double-acting differential piston, whereby one of its pressure surfaces is supplied with compressed air by a high response valve in order to open while its other pressure surface is supplied with compressed air by a second control valve in order to close. The high response valve is provided with a vent in order to reduce the pressure maintaining the control piston in the open position within a very short time and thus to ensure a very short closing time of the evacuation piston. While being simple in construction, such a venting valve allows a very short closing time and is therefore particularly suitable also for high-speed die-casting.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: December 12, 2000
    Assignee: V.D.S. Vacuum Diecasting Service S.A.
    Inventor: Rene Bigger
  • Patent number: 6158497
    Abstract: The method comprises the production of a first positive model of an item to be cast. The positive model is produced with a flange extending in an imaginary separation line of the item. The flange extends both inwardly in the item within an outer periphery of the item and outwardly outside the outer periphery of the item. The flange establishes an artificial increase of the thickness of the item. Through different intermediate steps at least a first mould part and a second mould part of a mould are produced. The first and the second mould part of the mould initially have a separation zone forming a contact surface between the first and the second mould part. The mould parts are treated in the separation zone so that the negative moulds of an upper and a lower surface of the part of the flange extending outside the item will subsequently form a contact surface of the first and the second mould part.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: December 12, 2000
    Assignee: Formkon ApS
    Inventors: J.o slashed.rn Anker Lange, Ejvind Viggo Kristensen
  • Patent number: 6155331
    Abstract: The geometry of the cast part is provided as a digital pattern and an inverse pattern for the lost casting mold including any core is generated from the digital pattern. A layer of a particulate molding material is provided. The molding material is made of a first material and a second material. The first material is chemically inert when irradiated by electromagnetic radiation. The second material is curable by a chemical curing process that is initiated by electromagnetic radiation. The layer is scanned by irradiating electromagnetic radiation on places of the layer corresponding to the inverse pattern for the lost casting mold including any core. The irradiation is controlled to initiate the chemical curing process in the second material.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: December 5, 2000
    Assignee: EOS GmbH Electro Optical Systems
    Inventors: Hans Langer, Christian Wilkening, Peter Keller, Florian Wendt
  • Patent number: 6155330
    Abstract: A spray forming pattern of a first metal having a melting point at a first temperature is formed. The spray forming pattern has a surface defining a cavity that has the shape of a master pattern. Steel particles having a carbon content in the range of 0.01-0.9% by weight are sprayed onto the spray forming pattern to form a deposit on the spray forming pattern. The deposit has a thickness of at least 0.5 inches and the temperature of the steel particles increases as the thickness of the steel deposit increases. The spraying conditions are controlled so that the steel particles coming into contact with the spray forming pattern results in a surface temperature of the spray forming pattern of less than about 80.degree. C. The deposit and the spray forming pattern are heated to a second temperature, which is higher than the first temperature, to melt the spray forming pattern from the deposit. The resulting deposit has the general shape of the master pattern.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: December 5, 2000
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Jeffrey Alan Kinane, Grigoriy Grinberg, David Robert Collins, Paul Earl Pergande
  • Patent number: 6155332
    Abstract: In a process for continuously casting a metal strand by casting metal into a straight, vertically oriented mold and subsequently drawing off the strand formed in the mold, the straight strand at first is bent into a circular arc shape in a bending zone along a transition curve, is guided along a circular arc guide and finally is straightened in a final straightening zone along a transition curve and, after this, is extracted via an approximately horizontal straight guide.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: December 5, 2000
    Assignees: Voest-Alpine Industrieanlagenbau GmbH, Sollac-Fos
    Inventors: Heinz Hodl, Michael Stiftinger, Andreas Eichinger, Kurt Engel, Jean-Francois Marioton, Gerard Zurita, Vincent Guyot, Catherine Lopes
  • Patent number: 6148899
    Abstract: A mold cavity in a mold vessel is evacuated. A charge of molten infiltrant is transported into the mold vessel while the vacuum is maintained in the mold cavity. Pressure is applied to the molten infiltrant to move the molten infiltrant from the mold vessel into the mold cavity. The molten infiltrant is cooled in the mold cavity to solidify the infiltrant. A fill tube can be used to transport the infiltrant to the mold vessel.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: November 21, 2000
    Assignee: Metal Matrix Cast Composites, Inc.
    Inventors: James A. Cornie, Stephen S. Cornie, Ralph P. Mason, Mark A. Ryals
  • Patent number: 6148902
    Abstract: A vacuum die casting system has three die casting machines connected to a single vacuum system, all of which is controlled by a programmable logic controller. The controller allows any two of the machines to be operatively connected to the vacuum system so that the casting operation of those two machines are performed under vacuum. The controller comprises six address relays, a sixteen channel input card, a processor, a sixteen channel output card, an interface and two high speed counter cards. The result is an efficient, reliable, and economical vacuum die casting system.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: November 21, 2000
    Assignee: Outboard Marine Corporation
    Inventors: Michael D. Zielinski, Edward M. Nelson, Walter H. Yelczyn, David M. Regenauer
  • Patent number: 6145577
    Abstract: A simplified mold handling system has a linear flowpath with adjustable throughput, variable cooling cycle capability, and minimized equipment and cost. The system has a mold handling conveyor with upper and lower levels on which pouring and cooling of the molds occur. The upper level of the conveyor receives sand molds and conveys the empty molds to a pouring station wherein molten material is deposited therein to form castings. After the castings have been poured, the molds are transferred to the lower level of the pouring conveyor for cooling purposes, and then back to the upper level. The sand molds are then either pushed to another row of the pallet, or are pushed down a ramp to a vibrating conveyor for removal of the sand. Such features allow adjustability in the dwell time required for cooling of the given metal.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: November 14, 2000
    Assignee: Hunter Automated Machinery Corporation
    Inventors: William A. Hunter, William G. Hunter
  • Patent number: 6145574
    Abstract: A core is formed and a prefabricated bearing bore is provided. Two separate projections are provided on the core wherein free projection edges of the two separate projections have a respective shaping radius between R=0.sub.mm and R.ltoreq.0.45.sub.mm. Subsequently indentations are produced in a circumferential area of the bearing bore by the two separate projections on the core wherein the indentations serve as fracture notches. The cast engine part is then formed by casting metal around the core using said fraction notches as incipient crack sites.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: November 14, 2000
    Assignees: Bayerische Motoren Werke AG, Fritz Winter Eisengiesserei GmbH & Co. KG
    Inventors: Clemens Luchner, Horst Henkel