Direct Pneumatic Charging Means Patents (Class 164/306)
  • Patent number: 9700338
    Abstract: A medical scalpel system includes a safety handle and an internal mechanism that permits a blade to be extended and retracted relative to the safety handle. At least a portion of the system is manufactured pursuant to a process wherein a material, such as silicone or Teflon, is used in the manufacturing of the components to provide a smooth movement between components of an extension and retraction mechanism.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: July 11, 2017
    Assignee: Surgistar, Inc.
    Inventors: Jonathan Woodward, Payal Goel
  • Patent number: 9004149
    Abstract: The embodiments described herein relate to methods and apparatus for counter-gravity formation of BMG-containing hollow parts. In one embodiment, the BMG-containing hollow parts may be formed by first feeding a molten metal alloy in a counter-gravity direction into a mold cavity to deposit the molten metal alloy on a surface of the mold cavity and then solidifying the deposited molten metal alloy.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: April 14, 2015
    Inventors: Theodore A. Waniuk, Joseph Stevick, Sean O'Keeffe, Dermot Stratton, Joseph Poole, Matthew Scott, Christopher Prest
  • Patent number: 8783331
    Abstract: The invention relates to a system and a method for casting in which an upper casting mold half can be pivoted out of a horizontal position into an approximately vertical position, in such a manner that the inside surface of the casting mold half can be treated in work-facilitating and time-saving manner, preferably by a person.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: July 22, 2014
    Assignees: KSM Castings Group GmbH, Fill Gesellschaft m.b.H.
    Inventors: Sven Heinecke, Ingo Maerz, Holger Oppelt, Roland Golz, Frank Landgraf, Alois Boindecker, Thomas Rathner, Alexander Schneeberger, Alois Wiesinger
  • Patent number: 8701742
    Abstract: The embodiments described herein relate to methods and apparatus for counter-gravity formation of BMG-containing hollow parts. In one embodiment, the BMG-containing hollow parts may be formed by first feeding a molten metal alloy in a counter-gravity direction into a mold cavity to deposit the molten metal alloy on a surface of the mold cavity and then solidifying the deposited molten metal alloy.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: April 22, 2014
    Assignees: Apple Inc., Crucible Intellectual Property, LLC
    Inventors: Theodore A. Waniuk, Joseph Stevick, Sean O'Keeffe, Dermot J. Stratton, Joseph C. Poole, Matthew S. Scott, Christopher D. Prest
  • Patent number: 8261809
    Abstract: A method for moving an upper mold against a lower mold in a mold casting machine having a mold clamping mechanism attached to a lifting and lowering frame. The mechanism has an upper mold lifting and lowering device that assembles and separates the upper and lower molds by lifting and lowering the upper mold relative to the lower mold and the frame. A space for a setting a core and for taking out products is formed between the upper and lower molds by lifting the device relative to the frame, and by lifting the frame relative to the lower mold. Then the frame is lowered until the upper mold comes close to the lower mold. Thereafter the upper mold is lowered by the device to form an assembled mold, molten metal is introduced into the mold and after the metal has solidified the upper mold is lifted by the device, all while the frame is kept fixed relative to the lower mold.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: September 11, 2012
    Assignee: Sintokogio, Ltd.
    Inventors: Fumikazu Shiose, Tetsuji Matsui, Yutaka Murata
  • Patent number: 8230897
    Abstract: A low-pressure casting apparatus that prevents molten metal that is a residue in a conduit from being oxidized. The low-pressure casting apparatus includes a compartment for holding a molten metal 1, a pressure chamber 2 that can communicate with the compartment, wherein the molten meal is pressurized in the chamber, an on-off valve 5 that opens and closes hole 4 through which the compartment can communicate with the pressure chamber, a conduit 7 that conducts the molten metal to the mold 6, wherein the base of the conduit is connected to a lower part of the chamber so as to communicate with the chamber, the end of the conduit being made so that it can communicate with a sprue for a mold 6, a float 9 that goes up and down in the pressure chamber, and a tank that stores an inert gas and that has a pipe 13 that is connected to the upper part of the pressure chamber 2.
    Type: Grant
    Filed: April 1, 2008
    Date of Patent: July 31, 2012
    Assignee: Sinokogio, Ltd.
    Inventors: Takahiro Tamura, Yutaka Murata
  • Patent number: 8191608
    Abstract: A device for low-pressure casting wherein the stalk or the guiding tube is filled with inert gas by causing the space formed over the molten metal in the pressurizing room to communicate with the stalk or the guiding tube.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: June 5, 2012
    Assignee: Sintokogio, Ltd.
    Inventors: Shinya Mizuno, Yutaka Murata
  • Publication number: 20110214833
    Abstract: A nucleated casting apparatus including an atomizing nozzle configured to produce a droplet spray of a metallic material, a mold configured to receive the droplet spray and form a preform therein, and a gas injector which can limit, and possibly prevent, overspray from accumulating on the mold. The gas injector can be configured to produce a gas flow which can impinge on the droplet spray to redirect at least a portion of the droplet spray away from a side wall of the mold. In various embodiments, the droplet spray may be directed by the atomizing nozzle in a generally downward direction and the gas flow may be directed in a generally upward direction such that the gas flow circumscribes the perimeter of the mold.
    Type: Application
    Filed: May 16, 2011
    Publication date: September 8, 2011
    Applicant: ATI Properties, Inc.
    Inventors: Robin M. Forbes Jones, Sterry A. Shaffer
  • Patent number: 8002015
    Abstract: A cooling system for a low pressure casting device, which includes an upper mold provided with a core portion of a spark plug and an upper die, a lower mold provided with a mold portion of a combustion chamber and a lower die, and side molds, may include i) a coolant supply unit connected respectively to the core portion of the spark plug, the upper die, the mold portion of the combustion chamber, and the lower die through coolant supply lines, ii) a cooling air supply unit connected respectively to the side molds and the mold portion of the combustion chamber through air supply lines, and iii) a vacuum intake unit connected respectively to the core portion of the spark plug, the upper die, the mold portion of the combustion chamber, and the lower die through vacuum intake lines.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: August 23, 2011
    Assignee: Hyundai Motor Company
    Inventor: Tae-Hwan Kwak
  • Patent number: 7896059
    Abstract: Disclosed is a metal casting system, an engineered mold for use therewith, a process for utilizing the system and mold, and articles having a clean, oxide-free sand casting of molten metals that have been produced under an inert environment. This is especially advantageous for making automotive and airplane parts from the manufacture of lightweight metals, and more especially for the production of magnesium parts in order to reduce weight while maintaining properties found in other lightweight metals. Currently, sand cast articles are being used for automotive, aerospace and semiconductor parts and other industrial applications.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: March 1, 2011
    Inventor: Adolf Hetke
  • Patent number: 7854251
    Abstract: The invention makes it possible to manufacture high-quality cast parts in a productive manner in that a casting mould with a filling opening pointing in the direction of gravity is provided during the casting of molten metal. The casting mould with the filling opening is coupled to a melt container containing the molten metal, and the molten metal is conveyed from the melt container into the casting mould counter to the direction of gravity. The casting mould is sealed directly after filling with molten metal using a locking means which is at least temporarily connected to the casting mould in a fixed manner, in that the casting mould is decoupled from the melt container directly after closure of the casting mould and in that the casting mould is rotated about a horizontal axis of rotation, wherein the casting mould remains in a sealed position with respect to the locking means.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: December 21, 2010
    Assignee: Hydro Aluminium Alucast GmbH
    Inventor: Herbert Smetan
  • Patent number: 7401637
    Abstract: A new pressure-only molten metal valving apparatus and method is provided. This novel approach to controlling the flow of liquids eliminates the need for active, moving valve components. Using the natural surface tension properties of liquids, the gas pressure either activates liquid flow when a threshold is overcome or retains the liquid in a head, even when lifted.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: July 22, 2008
    Assignee: International Business Machines Corporation
    Inventors: Glen N. Biggs, John J. Garant, Peter A. Gruber, Bouwe W. Leenstra, Christopher L. Tessler, Thomas Weiss
  • Publication number: 20080023526
    Abstract: A new pressure-only molten metal valving apparatus and method is provided. This novel approach to controlling the flow of liquids eliminates the need for active, moving valve components. Using the natural surface tension properties of liquids, the gas pressure either activates liquid flow when a threshold is overcome or retains the liquid in a head, even when lifted.
    Type: Application
    Filed: July 28, 2006
    Publication date: January 31, 2008
    Inventors: Glen N. Biggs, John J. Garant, Peter A. Gruber, Bouwe W. Leenstra, Christopher L. Tessler, Thomas Weiss
  • Patent number: 7246650
    Abstract: An apparatus and method for enhanced gravity casting wherein a portion of the mold is maintained in pressure contact with molten metal as it solidifies to allow the mold surface to follow the contraction of the solidifying metal. A further feature of the invention is the use of an air clearance between mold parts that is sufficient to allow air to escape but insufficient to allow molten metal to flow therepast.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: July 24, 2007
    Assignee: Water Gremlin Company
    Inventor: Norman E. Peterson
  • Patent number: 7134480
    Abstract: In a filling-tube construction (1, 2) for providing a connection between a mould (6) to be filled with molten metal and a mould-filling furnace (3) containing molten metal (5), said mould (6) having at least one casting cavity (7), the lowermost part of each such cavity communicating with a filling duct (8), at least one end of which is open to the outside of said mould (6) and adapted to be temporarily connected to the filling-tube construction (1, 2) to receive molten metal (5) from the mould-filling furnace (3), the mould-filling furnace being adapted to contain molten metal (5) and to transfer said molten metal (5) under a controlled pressure through the filling-tube construction (1, 2) and to the filling duct (8), the filling-tube construction comprises a first section (1) extending from a position close to the bottom of said mould-filling furnace (3) up to an intermediate position closer to the filling duct (8) and at least one separate second section (2) providing a connection from the upper end of the
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: November 14, 2006
    Assignee: Disa Industries A/S
    Inventors: Peter Møller Iversen, Uffe Andersen
  • Patent number: 7044192
    Abstract: A runner cooling block for use in a die casting system comprises a spreader block, a spreader, a bushing block, a sprue bushing and a water jacket. The sprue bushing comprises a sprue channel running through an interior of the sprue bushing and a cooling channel running circumferentially around an exterior surface of the sprue. The sprue bushing, water jacket and bushing block are assembled to allow cooling water to pass through the cooling channel. The spreader block and the bushing block are assembled such that the spreader is centrally located within the sprue channel wherein molten metal is allowed to pass through the sprue channel for passage into the runner system. The cooling channel includes at least one circumferential heat transfer contour to provide increased heat dissipation to enhance cooling of the molten metal passing through the sprue channel.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: May 16, 2006
    Inventor: Richard L. Dubay
  • Patent number: 7011137
    Abstract: The molding device comprises a lower mold unit and an upper mold unit. When the upper mold unit approaches the lower mold unit, a molding cavity is defined between the lower and upper mold units. The lower mold unit has a storing chamber that is communicated with the molding cavity. The lower mold unit comprises a pressure-decreasing mechanism and a pushing mechanism. A molten material is stored in the storing chamber. When the molding cavity is formed between the lower mold unit and the upper mold unit, the pressure-decreasing mechanism decreases pressure in the molding cavity. Afterwards, in sync with the operation that the upper mold unit pushing down a lower mold-holding member of the lower mold unit, an injection rod of the pushing mechanism pushes out the molten material in the storing chamber to the molding cavity. As a result, the efficiency of the molding operation is improved.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: March 14, 2006
    Assignee: Toshihara Kanagata Kogyo Co., LTD
    Inventor: Akira Itoh
  • Patent number: 6997231
    Abstract: The invention relates to a method for vacuum diecasting and a diecasting mould (1), especially for diecasting components made of metal or the alloys thereof. The aim of the invention is to provide a better casting quality while simplifying the procedure of the method. To this end, the evacuation of the die cavity (5) and the filling with molten bath are carried out independently from one another.
    Type: Grant
    Filed: February 21, 2000
    Date of Patent: February 14, 2006
    Assignee: Buhler Druckguss AG
    Inventors: Paul Jung, Werner Brugger, Benno Niedermann
  • Patent number: 6994148
    Abstract: A casting machine furnace apparatus that includes a furnace adapted to receive molten metal is described herein. The furnace includes an outer wall structure, a cover adapted to seal the furnace, a source of fluid, and a casting apparatus in fluid communication with the molten metal. The fluid is supplied into the furnace for applying fluid pressure on the molten metal. The application of fluid pressure on the molten metal causes the molten metal to supply the casting apparatus. The outer wall structure of the furnace is provided with a plurality of exhaust ports where the ports are provided in the outer wall structure at predetermined locations. The ports are selectively controllable between a first closed position, where the exhaust ports do not allow air to be exhausted from the furnace, and a second opened position, where the exhaust ports enable air to be exhausted from the furnace.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: February 7, 2006
    Assignee: Hayes Lemmerz International, Inc.
    Inventors: Kenneth D. McKibben, Daniel D. Minor, Alan P. Gould, Robert L. Macheske, Dean VanderJagt, Rick Van Horn, Khushal Wardak, Roger Mucci, John Starks
  • Patent number: 6986380
    Abstract: Intervening fingers mounted within a mold gate cavity extend across a portion of the gate cavity and cooperate with one another to slow the flow of molten metal into the mold cavity and thereby reduce flow turbulence.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: January 17, 2006
    Assignee: Hayes Lemmerz International, Inc.
    Inventors: Steve Rice, Tim O'Banion
  • Patent number: 6938673
    Abstract: A safety block device for supporting a generally vertically movable component about a guide post of a press device. According to one embodiment of the invention, the safety block device includes a generally upright column (42) adapted to be disposed adjacent the guide post (18) and moveable between a retracted non-working position, wherein the column does not support the moveable component, and an extended working position, wherein the column is effective to support the moveable component and prevent movement thereof. The column includes an upper end portion and a lower end portion. According to one feature of the invention, the lower end portion of the column includes a generally rounded first portion (62a) and a generally second flat portion (62b) which is slightly offset with respect to the first portion.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: September 6, 2005
    Assignee: Hayes Lemmerz International, Inc.
    Inventors: Kenneth D. McKibben, Daniel D. Minor, Mark Salgat, Robert L. Macheske, Michael A. Coffman, Aleksander A. Filipov
  • Patent number: 6932146
    Abstract: A method for casting an article composed of a foamed metal includes positioning a die with a die cavity above a bath of a molten metal and pressurizing the bath to cause the molten metal to fill the die cavity. A gas is then bubbled through the molten metal to form a foam. The foam is formed in the die cavity. Once the foam in the die cavity is solidified, the pressure in the bath is released and the formed article is removed. An apparatus for the method includes a die positioned above the bath, the die having a die cavity in fluid communication with the bath. The bath is provided with a pressurizing means and a venting means as well as a gas supply port for forming the foam.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: August 23, 2005
    Assignee: Cymat Corp.
    Inventors: Scott Nichol, James K. Killingbeck, Richard G. Manely
  • Patent number: 6929052
    Abstract: A method for uphill casting/low-pressure casting, especially of light metal alloys, with a casting furnace lying below a casting table, having a riser pipe and a mouth opening of the riser pipe and having a mould with an underlying pouring-in opening and having a slide valve closure, forming a flow-through channel which for casting takes on a substantially straight, longitudinal course, wherein for shut-off in the slide valve closure, two opening sections of the flow-through channel directly adjacent one to the other are displaced with respect to one another transversely to the longitudinal course of the flow-through channel directly after casting with still liquid melt in the pouring-in opening, so that an overlying opening section remains in open communication with the pouring-in opening free from undercut and an underlying opening section remains in open communication with the mouth opening of the riser pipe, wherein the opening sections are completely offset with respect to each other.
    Type: Grant
    Filed: July 7, 2001
    Date of Patent: August 16, 2005
    Assignee: Hydro Aluminium Deutschland GmbH
    Inventors: Alexander Fischer, Wolfgang Müller
  • Patent number: 6926065
    Abstract: A mold that has an expandable mold cavity that is maintained at a first volume during an injection phase and expands to a second volume during the solidification phase to inhibit or prevent the formation of voids or cracks in a material that expands during the solidification process and a method whereby the pressure within a mold cavity during the solidification process is limited to inhibit or prevent formation of cracks or fissures in a cast article that normally expands during solidification.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: August 9, 2005
    Inventor: Michael Garin
  • Patent number: 6915836
    Abstract: A disk rotor is produced using pre-forms. A manufacturing device 10 includes lower mold 11 and upper mold 12. The lower mold 11 includes support block 13, main body part of the lower mold 14, inclined pins 15, core elements 16 and slider 17. In securing and supporting pre-forms 4A, 5A, a cylinder 18 is actuated to cause upward movement of the support block 13 and the main body part of the lower mold 14, during which movement, core elements 16 and slider 17 are slid relatively outwards along inclined pins 15. In this state, the pre-forms 4A, 5A are guided to preset sites. The support block 13 and the main body part of the lower mold 14 are then moved downwards, during which movement, core elements 16 and slider 17 are slid relatively inwards along the inclined pins 15. In this state, the pre-forms 4A, 5A are supported and secured stably to define a cavity.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: July 12, 2005
    Assignee: Aisin Takaoka Co., Ltd.
    Inventors: Tomohiro Yamaguchi, Tomiyuki Murayama, Keiji Hatsuyama
  • Patent number: 6910520
    Abstract: There is disclosed a mold (1) for casting including: a lower mold (6) having four gates (5) (at least one gate); an upper mold (7) being matched with the lower mold (6) to form a cavity; and side molds (2a), (2b) being matched with the lower mold (6) and upper mold (7) to form the cavity and being split (into at least two). In the mold (1) for casting is constituted an upper surface of a weir (4) of a flat portion of side molds (2a), (2b), and other surfaces of the weir (4) is constituted of a concave portion of the lower molds (6), and the weir (4) is disposed so as to keep a parting line (3) between the side molds (2a), (2b) away. The mold (1) for casting can easily be demolded, and the desired number of gate systems can be formed in desired positions.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: June 28, 2005
    Assignee: Asahi Tec Corporation
    Inventor: Tatsuya Aoki
  • Patent number: 6899159
    Abstract: A method for uphill/low pressure casting of a liquid melt in a device which has a casting furnace lying below a casting table, a mould with an underlying pouring-in opening and a slide valve closure forming a flow-through channel having a substantially straight longitudinal course during casting the liquid melt. The casting method constitutes casting the liquid melt in the pouring-in opening of the mould, shutting off the slide valve closure by displacing an overlying opening section and an underlying opening section of the flow-through channel directly after casting the liquid melt in the mould, which liquid melt is still in the pouring-in opening. The liquid melt is lowered below the mouth opening of the riser pipe and the mould is placed on the riser pipe so that a downward pressure is set between the slide valve closure and the mouth opening of the riser pipe which behaves elastically flexibly.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: May 31, 2005
    Assignee: Hydro Aluminium Deutschland GmbH
    Inventors: Alexander Fischer, Wolfgang Müller
  • Publication number: 20040250978
    Abstract: A method for uphill casting/low-pressure casting, especially of light metal alloys, with a casting furnace lying below a casting table, having a riser pipe and a mouth opening of the riser pipe and having a mould with an underlying pouring-in opening and having a slide valve closure, forming a flow-through channel which for casting takes on a substantially straight, longitudinal course, wherein for shut-off in the slide valve closure, two opening sections of the flow-through channel directly adjacent one to the other are displaced with respect to one another transversely to the longitudinal course of the flow-through channel directly after casting with still liquid melt in the pouring-in opening, so that an overlying opening section remains in open communication with the pouring-in opening free from undercut and an underlying opening section remains in open communication with the mouth opening of the riser pipe, wherein the opening sections are completely offset with respect to each other.
    Type: Application
    Filed: May 29, 2003
    Publication date: December 16, 2004
    Inventors: Alexander Fischer, Wolfgang Muller
  • Publication number: 20040194906
    Abstract: A die particularly for on-road vehicle wheels, of the type that comprises lower, upper and lateral die parts that form an impression to be filled with molten material, comprising at least two die filling points arranged at two openings of the design of a wheel where the lower die part and the upper die part are in contact when the die is in the closed configuration.
    Type: Application
    Filed: January 28, 2004
    Publication date: October 7, 2004
    Inventor: Heinrich Georg Baumgartner
  • Patent number: 6772819
    Abstract: A casting machine is provided for producing an as-cast product by using horizontally split type metal molds, which are closed and held horizontally to define a cavity, and by pouring molten metal from a holding furnace into the cavity. The casting machine includes a metal drag held horizontally at a fixed position; a plurality of upwardly-facing cylinders disposed around the metal drag and mounted on a floor or a base, each cylinder having a cylinder rod that extends and retracts; and a cope die base mounted for vertical movement on the distal ends of the cylinder rods of the upwardly-facing cylinders for horizontally holding a metal cope at a position above the metal drag so that the metal cope is mated with the metal drag to define the cavity when the cope die base is lowered by the upwardly-facing cylinders.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: August 10, 2004
    Assignee: Sintokogio, Ltd.
    Inventors: Fumikazu Shiose, Yukiyoshi Funakoshi
  • Publication number: 20040134636
    Abstract: There is disclosed a mold (1) for casting including: a lower mold (6) having four gates (5) (at least one gate); an upper mold (7) being matched with the lower mold (6) to form a cavity; and side molds (2a), (2b) being matched with the lower mold (6) and upper mold (7) to form the cavity and being split (into at least two). In the mold (1) for casting is constituted an upper surface of a weir (4) of a flat portion of side molds (2a), (2b), and other surfaces of the weir (4) is constituted of a concave portion of the lower molds (6), and the weir (4) is disposed so as to keep a parting line (3) between the side molds (2a), (2b) away. The mold (1) for casting can easily be demolded, and the desired number of gate systems can be formed in desired positions.
    Type: Application
    Filed: July 25, 2003
    Publication date: July 15, 2004
    Applicant: Asahi Tec Corporation
    Inventor: Tatsuya Aoki
  • Publication number: 20040050525
    Abstract: An apparatus and process are provided for discharging a dose of a molten metal from a pressure pour furnace. A heating chamber of the furnace is used to keep the molten metal at a selected temperature. A sealing port between the heating chamber and a pressure chamber allows selectively filling of the pressure chamber with molten metal from the heating chamber by inserting or removing a sealing means from the sealing port. The sealing means inserted in the sealing port also provides a means for preventing back flow of the molten metal to the heating chamber when the pressure chamber is pressurized. Differential pressure sensing of the pressure of the molten metal in the pressure chamber and the pressure of the pressurizing gas in the pressure chamber can optionally be used to achieve an accurate measured discharge from the pressure chamber as the level of molten metal decreases from repeated discharges of doses from the furnace.
    Type: Application
    Filed: March 5, 2003
    Publication date: March 18, 2004
    Inventors: Gordon F. Kennedy, Mark G. Mohler
  • Publication number: 20040011496
    Abstract: A method and apparatus for uphill casting/low-pressure casting, especially of light metal alloys, having a casting furnace lying below a casting table, with a riser pipe and a mouth opening of the riser pipe and having a mould with an underlying pouring-in opening and having a slide valve closure, forming a the flow-through channel which for casting takes on a substantially straight, longitudinal course, wherein for shut-off in the slide valve closure, two opening sections of the flow-through channel directly adjacent one to the other are displaced with respect to one another transversely to the longitudinal course of the flow-through channel directly after casting with still liquid melt in the pouring-in opening, wherein an overlying opening section remains in open communication with the pouring-in opening free from undercut and an underlying opening section remains in open communication with the mouth opening of the riser pipe, wherein the opening sections are completely offset with respect to each other, a
    Type: Application
    Filed: June 6, 2003
    Publication date: January 22, 2004
    Inventors: Alexander Fischer, Wolfgang Mller
  • Patent number: 6637496
    Abstract: Apparatus for making a cast article includes a rotary table with a drive for indexing the rotary table to a plurality of rotational positions. A molten metal supply apparatus is placed at a first fixed location adjacent to said rotary table. A plurality of casting machines are supported at predetermined spacings on the rotary table, each respective casting machine having a respective holding furnace feeding a respective stalk tube and having a molten metal inlet port for receiving molten metal from the molten metal supply apparatus when the respective casting machine is indexed to a fill position adjacent the first fixed location. Each respective casting machine is adapted to receive one or more molds and has an open mold configuration and a closed mold configuration.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: October 28, 2003
    Assignee: Hayes Lemmerz International, Inc.
    Inventors: Robert L. Macheske, Thomas J. H. Rozich, Alan P. Gould, Daniel D. Minor, Kenneth D. McKibben
  • Publication number: 20030178169
    Abstract: A method for uphill/low-pressure casting, especially of light metal alloys, with a casting table having a flow-through opening, with a casting furnace lying below the casting table with a riser pipe forming an upwardly open mouth opening, with a mould having a base plate which has a downwardly open pouring-in opening; the mouth opening is positioned against the flow-through opening in a sealing fashion from below, the mould is brought with its pouring-in opening over the flow-through opening, melt is conveyed from the casting furnace via the riser pipe into the mould until it is filled, the mould is displaced horizontally on the casting furnace with open melt-filled communication between the casting furnace and the mould until the pouring-in opening is closed by the casting table below and the flow-through opening is closed by the base plate above, the melt is allowed to drop in the riser pipe as far as below the mouth opening.
    Type: Application
    Filed: May 29, 2003
    Publication date: September 25, 2003
    Inventors: Alexander Fischer, Wolfgang Mller
  • Patent number: 6609555
    Abstract: A casting rollover apparatus includes a cage supporting a casting mold and a slide coupled to the cage for advancing the mold into and out of engagement with a molten metal discharge nozzle. A spindle is carried on the slide and coupled to the cage for rotating the cage. A clamp cylinder is carried on the cage for clamping the mold in the closed position. A single transducer is mounted on one of a pair of pressurized fluid drive cylinders on the slide to detect the position of the slide. Electrical plug connectors are coupled to the transducer and the cylinder control elements. Thrust bearings are mounted on the spindle and apply a pre-load to the spindle. A digital proportional valve is coupled to a drive cylinder for controlling the deceleration of the spindle. A position detector switch is mounted in the path of angular rotation of the spindle to initiate spindle deceleration. The clamp cylinder carries a tubular member coupled to the piston and movable with respect to the clamp cylinder housing.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: August 26, 2003
    Assignee: Adams Automation
    Inventors: Robert H. Spengler, III, Michael H. Kuvasta
  • Patent number: 6585797
    Abstract: The melter furnace includes a heating chamber (16), a pump chamber (18), a degassing chamber (20), and a filter chamber (22). The pump chamber (18) is located adjacent the heating chamber (16) and houses a molten metal pump (30). The degassing chamber (20) is located adjacent and in fluid communication with the pump chamber (18), and houses a degassing mechanism (36). The filter chamber (22) is located adjacent and in fluid communication with the degassing chamber (20). The filter chamber (22) includes a molten metal filter (38). The melter furnace (12) is used to supply molten metal to an externally located holder furnace (14), which then recirculates molten metal back to the melter furnace (12).
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: July 1, 2003
    Assignee: Alcoa Inc.
    Inventors: Michael J. Kinosz, Thomas N. Meyer
  • Patent number: 6540008
    Abstract: Disclosed is a molten metal injector system including a holder furnace, a casting mold supported above the holder furnace, and a molten metal injector supported from a bottom side of the mold. The holder furnace contains a supply of molten metal having a metal oxide film surface. The bottom side of the mold faces the holder furnace. The mold defines a mold cavity for receiving the molten metal from the holder furnace. The injector projects into the holder furnace and is in fluid communication with the mold cavity. The injector includes a piston positioned within a piston cavity defined by a cylinder for pumping the molten metal upward from the holder furnace and injecting the molten metal into the mold cavity under pressure. The piston and cylinder are at least partially submerged in the molten metal when the holder furnace contains the molten metal. The cylinder further includes a molten metal intake for receiving the molten metal into the piston cavity.
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: April 1, 2003
    Assignee: Alcoa Inc.
    Inventors: Thomas N. Meyer, Michael J. Kinosz, Nicolas Bigler, Guy Arnaud
  • Publication number: 20030034143
    Abstract: A method for casting an article composed of a foamed metal includes positioning a die with a die cavity above a bath of a molten metal and pressurizing the bath to cause the molten metal to fill the die cavity. A gas is then bubbled through the molten metal to form a foam. The foam is formed in the die cavity. Once the foam in the die cavity is solidified, the pressure in the bath is released and the formed article is removed. An apparatus for the method includes a die positioned above the bath, the die having a die cavity in fluid communication with the bath. The bath is provided with a pressurizing means and a venting means as well as a gas supply port for forming the foam.
    Type: Application
    Filed: August 19, 2002
    Publication date: February 20, 2003
    Inventors: Scott Nichol, James K. Killingbeck, Richard G. Manley
  • Patent number: 6505677
    Abstract: When casting metal articles in a mould by forcing molten metal upwardly through a filling tube by gas pressure in a closed chamber, the datum level just below that of a connector connecting the filling tube to the mould is registered by a level sensor in a sensing tube while the latter's upper end is connected to atmosphere through a vent tube. At the same moment, the pressure is measured by a pressure sensor and recorded by a control unit and maintained constant by the latter after the emptying of the sensing tube, by connecting its upper end to the chamber through an equalizing tube, until the pressure is increased to fill the mould according to a predetermined function of time programmed into the control unit. The starting point for the filling of all moulds in succession is the same, regardless of the amount of metal in the supply unit.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: January 14, 2003
    Assignee: Georg Fischer Disa A/S
    Inventors: Peter M¥ller Iversen, Uffe Andersen
  • Patent number: 6460603
    Abstract: An apparatus for uphill low pressure casting of metals in split sand moulds and having a sprue in one of the two moulds, to which can be connected the casting tube of a melt container and which is connected to the lowest area of the mould cavity, and having a sealing plug integrated into the mould and which after the filling of the mould cavity can be brought into the closed position by means of an external drive engaging in the mould, including a seal which does impairing casting quality and moulding sand preparation. Between the sprue and the mould cavity is provided a casting channel connecting the sprue and the mould cavity. The sealing plug is constructed as a sand mould body and in a shaped-in guide of the mould is displaceable between an open position and a closed position, and seals a casting channel and a metallostatic pressure of the molten metal in the mould acts against the guide on the sealing plug.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: October 8, 2002
    Assignee: Georg Fischer Disa AG
    Inventors: Norbert Damm, Herbert Zulauf
  • Patent number: 6460604
    Abstract: An apparatus for uphill low pressure casting of molten metal in sand molds conveyed in synchronized manner with a casting station located at the conveyor, a gas pressure holding furnace containing the molten metal and located at the casting station with a rising casting tube connectable to the sand molds has a device for refilling the holding furnace with molten metal. To permit a rapid casting cycle and high casting capacities, the refilling device has at least one pressure-tight melt container and a filling tube located in the holding furnace with a seal positioned outside the same. The melt container is couplable in pressure-tight manner by means of its outlet to the holding furnace filling tube. The holding furnace is connected to the melt container by means of a pneumatic pressure compensating line.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: October 8, 2002
    Assignee: Georg Fischer DISA AG
    Inventors: Norbert Damm, Herbert Zulauf
  • Patent number: 6453976
    Abstract: A vaporizable refractory coated pattern assembly is formed having a sprue connected to a plurality of thin wall patterns of articles to be cast. The pattern assembly is supported in a refractory particulate media in an open bottom container that is evacuated to subambient pressure and rotated in a manner to distribute particulates to regions of the refractory coated patterns not yet directly contacted by particulates. The pattern assembly is comprised of relatively dense foam plastic pattern material that imparts increased strength to the thin wall patterns. The sprue includes a vent passage that communicates to a particulate media to vent pattern decomposition vapors thereto in a manner that enables faster replacement of the pattern assembly in the media, despite the use of the relatively dense pattern material.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: September 24, 2002
    Assignee: Hitchiner Manufacturing Co., Inc.
    Inventors: George D. Chandley, Qi Zhao
  • Patent number: 6382301
    Abstract: In order to increase casting production during a filling of a mold from below, an uptake for the casting mass is provided in molding sand of the mold. Immediately after the filling of the mold has been concluded, a part of the uptake which extends in the molding sand is interrupted and thus closed off so that the mold can be immediately separated from the casting container.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: May 7, 2002
    Assignee: Heinrich Wagner Sinto Maschinenfabrik GmbH
    Inventor: Herbert Grolla
  • Patent number: 6378595
    Abstract: A control system and method for controlling a low-pressure die casting machine wherein the pressure within the dies more accurately tracks the desired recipe pressure. The control system senses pressure in the dies and compares the sensed pressure to desired pressure. Should the difference between the sensed pressure and the desired pressure be indicative of a problem in the casting operation, subsequent casting cycles are prevented. Should the difference between the sensed pressure and the desired pressure be indicative of a potential catastrophic failure, the current casting cycle is immediately terminated, thereby minimizing the possibility of catastrophic failure. The control system has commercially available and easily replaceable components and, thus, can be quickly repaired to reduce machine downtime should any component fail.
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: April 30, 2002
    Assignee: Honda of America Mfg., Inc.
    Inventor: Richard D. Zimmerman, II
  • Patent number: 6334478
    Abstract: In order to provide a die structure for injection molding of a light alloy free from gas defects, and a method of molding a light alloy parts using the die, the die structure is used for converting a light alloy into a semi-molten state, wherein a solid phase and a liquid phase coexist, or a molten state at a temperature just above a melting point and injecting the molten metal into an interior cavity portion, and S1/S2 of a gate sectional area S1 with respect to a maximum sectional area S2 of the cavity of the mold which area is almost perpendicular to the flowing direction of the melt therein is set in a range of 0.06 to 0.5.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: January 1, 2002
    Assignee: Mazda Motor Corporation
    Inventors: Kazuo Sakamoto, Kyoso Ishida, Yukio Yamamoto
  • Patent number: 6318444
    Abstract: An apparatus for charging horizontal and vertical cold chamber pressure die-casting machines with metal, includes a pressure chamber having a first end which connects to a cold chamber pressure die casting machine, and an interchangeable receptacle, arranged underneath or laterally underneath the pressure chamber, the receptacle including a riser pipe which extends upwardly from a first end immersed in molten metal in the receptacle through a gas-tight cover on the receptacle to a second end. A pressure or aspirating line is fastened on the cover and connected at a first end to the second end of the riser pipe, and is connectable at a second end to a mid-point in the pressure chamber.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: November 20, 2001
    Inventors: Gustav Ohnsmann, Gerold Bandt
  • Patent number: 6305460
    Abstract: In order to increase casting production during a filling of a mold from below, whereby an uptake for the casting mass is provided in the molding sand of the mold, immediately after the filling of the mold has been concluded a part of the uptake, which part extends in the molding sand, is interrupted and thus closed off so that the mold can be immediately separated from the casting container.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: October 23, 2001
    Assignee: Heinrich Wagner Sinto Maschinenfabrik GmbH
    Inventor: Herbert Grolla
  • Patent number: 6216766
    Abstract: A pipe conveying molten material upwards from a pressurized receptacle into the mold of a low pressure diecasting machine, positioned on and supported by the receptacle, is secured in a fluid-tight fit by an adjustable coupling device. One end of the pipe extends through the topmost wall of the receptacle to pick up the molten material and the other terminates in a head located externally of the receptacle and tightened together with a seal against the mold. The outer surface of the pipe head has at least one substantially frusto conical portion matched to the surfaces of a plurality of wedges disposed circumferentially around the pipe and mounted on slide ways which can be directed by suitable actuators from an at-rest position to an operating position in which the pipe is subjected to an axial force with the pipe head clamped together with the seal against the machine.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: April 17, 2001
    Assignee: Reynolds Wheels International Ltd.
    Inventors: Gianni Benni, Giorgio Muneratti
  • Patent number: 6196294
    Abstract: A casting plant for low-pressure casting of molten metal with operatively and kinematically connected units in the form of linear or revolving conveying devices.
    Type: Grant
    Filed: February 22, 1998
    Date of Patent: March 6, 2001
    Inventors: Gustav Ohnsmann, Gerold Bandt, Martin Ohnsmann
  • Patent number: 5044802
    Abstract: A printing apparatus including a print mechanism for printing key-input print information; an eraser for erasing a character or symbol printed on a recording medium with the print mechanism; a first memory for storing the key-input information; a second memory for storing information on a print object erased with the eraser; and an erasure controller for controlling the eraser in accordance with a comparison result between the erased object information stored in the second memory and the key-input information stored in the first memory.
    Type: Grant
    Filed: December 26, 1990
    Date of Patent: September 3, 1991
    Assignee: Canon Kabushiki Kaisha
    Inventor: Noriyuki Sugiyama