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| Number | Title | Issue Date |
| 7765845 | Stem slide device The stem slide device of the present invention in an extruder has a stem vertical movement support (71) and slide guide members (72-1, 2) fastened to the support and forming guide grooves. A stem (6) pushing against a billet loaded in a c... | 08/03/2010 |
| 7591163 | Extrusion molding method and apparatus of extrusion press An extrusion molding method of an extrusion press includes a first step of loading a billet, the outer surface of which is subjected to a barking treatment, into a container, and extruding the billet in such a manner as to leave a predetermined length, a second step... | 09/22/2009 |
| 7311135 | Process for manufacturing a nanocarbon-metal composite material A composite material composed of nanocarbon materials and metallic materials for a matrix is extrusion molded to have the nanocarbon materials oriented in one direction. ... | 12/25/2007 |
| 7219522 | Oval cross section metal tube producing device and producing method It is an object of the present invention to provide a novel aluminum tube of an oval cross section that has a wider range of applications and added values. A disk-shaped metal slug (21) is impact-extruded with the use of a die (14) and a punch (13 | 05/22/2007 |
| 7197415 | Laser alignment method and apparatus A method for setting or calibrating a machine tool wherein the critical components the machine tool are identified as are the critical devices that are employed to affect their position and each of the possible positions to which each of the critical devices may be ... | 03/27/2007 |
| 6904657 | Brittle wire extrusion method and apparatus A method and apparatus is presented for the manufacture of brittle wire by the co-extrusion, or filled billet method. The invention involves a step by step method by which a billet can is specially prepared with a chamfered front end and a concave, collapsible front... | 06/14/2005 |
| 6826942 | Apparatus and method for extrusion of material The apparatus for extrusion of material includes a process chamber provided in front of a die thereby serving to control parameters of the extrusion method. A die hold is provided to serve both as a structure for mounting a die in the front end of a hollow stem and ... | 12/07/2004 |
| 5918498 | Dummy block construction In a dummy block construction for use in extruding an extrudable metal, the dummy block having a dummy block base; a connector for connecting said dummy block base to a stem of an extruder; a replaceable wear ring connected to a forward circumferential po... | 07/06/1999 |
| 5896772 | Extruder An extruder is formed of a container having a container liner for receiving a billet therein, an extrusion stem situated near the container for disposing the billet into the container, and a two-piece seal block installed between the container and the ext... | 04/27/1999 |
| 5771734 | Replaceable ring for dummy block In a dummy block construction for use in extruding an extrudable metal, the dummy block having a dummy block base; a connector for connecting said dummy block base to a stem of an extruder; a replaceable wear ring connected to a forward circumferential po... | 06/30/1998 |
| 5678442 | Extruder An extruder has a cylindrical container into which a billet is loaded; a two-piece seal block disposed on an end surface of the container at an extruding stem side; a vacuum deaerating hole formed in the seal block; and a fixed dummy block, having an inte... | 10/21/1997 |
| 5666846 | Extrusion apparatus for making seamless tubes from hollow billets An apparatus and method for manufacturing seamless tubes from hollow billets that will not contain metal oxide, which may be introduced into the extruded metal tube from an oxide layer formed on the inner surface of the hollow billets, so as to improve th... | 09/16/1997 |
| 5626047 | Fixed dummy block assembly An improved fixed dummy block assembly to be used with a heavy duty metal extrusion assembly including a hydraulic press and a billet container. The assembly includes a stem connected with the press in axial alignment with the billet container so as to be... | 05/06/1997 |
| 5626046 | Lightweight ram for bodymaker A ram that is utilized in high speed apparatus for forming elongated one piece metal can bodies from shallow cups is constructed by metallurgically bonding either a nose piece to a body or a tail piece to a body, the body constructed from a single integra... | 05/06/1997 |
| 5354192 | Indirect extrusion press An indirect extrusion press wherein a cleaning ring can be clamped with certainty by clamp members. The indirect extrusion press has a die stem, a container, a cleaning ring removably fitted at an end portion of the die stem for cleaning the inner face of... | 10/11/1994 |
| 5311761 | Metal extrusion dummy block having a spring loaded valve An extrusion press for extruding extrudable metals through a die by use of a dummy block, the addition of a mechanical venting device to vent gases from the container. The venting device has: i) a circular shaped valve member provided in a front face of the du... | 05/17/1994 |
| 5272900 | Bayonet style connector for metal extrusion dummy block In a circular dummy block for use in an extrusion press for extruding through a die, extrudable metal, a bayonet type coupler for connecting the dummy block to a stem of the extrusion press. The bayonet type coupler comprises: i) a post having on its oute... | 12/28/1993 |
| 5054303 | Method of extrusion, and extrusion press In an extrusion press the void space between a pressure pad (4), a billet container (5), an extrusion die (6) and the billet (12) to be extruded is evacuated by suction through the pressure pad (4) and a hollow extrusion stem (3) before the commencement o... | 10/08/1991 |
| 5054308 | Forging punch A forging punch of the present invention includes: an outer punch of a cylindrical shape; and an inner punch disposed in the outer punch and protruding from an end surface of the outer punch; at least one of the punches having at least one groove for reli... | 10/08/1991 |
| 5042283 | Aluminum tube manufacturing device An aluminum tube manufacturing device is provided that includes a female die having an internal shape identical with an external shape of an upper part of an aluminum tube to be formed thereby, including a mouth portion, a shoulder portion and a portion o... | 08/27/1991 |
| 5007274 | Billet pre-piercer apparatus and method An apparatus for pre-piercing billets includes a generally cylindrical container for receiving and supporting a generally cylindrical billet, a mandrel bar mounted for axial movement along the axis of the cylinder for penetrating the billet, and a bolster... | 04/16/1991 |
| 4983574 | Composite superconductor Conductor in strip, sheet or wire form with an electrical conductivity of at least 0.85×106 Ω-1 cm-1 at 77° K. composed of a composite material of a metal matrix (1) and particles (2) composed of a high-temperature supe... | 01/08/1991 |
| 4809531 | Means and method for removing trapped billets from indirect extrusion press Metal billets trapped in the billet container of an indirect extrusion press are removed by indirect extrusion in the reverse direction until the billet size is reduced sufficiently for the residue to be expelled bodily from the container. The stem used t... | 03/07/1989 |
| 4781053 | Indirect extrusion process and machinery therefor An indirect extrusion process, and apparatus therefor, for producing an extrusion product from a hot metal billet. A press container is mounted to be substantially axially stationary during extrusion of a billet. A hot billet, a die and a pressure disc ar... | 11/01/1988 |
| 4779442 | Method and apparatus for measuring forces on a workpiece during drawing or ironing A method and apparatus for measuring the sidewall tension in a workpiece being drawn through a draw die and/or ironing die. A punch is provided which is adapted to measure and continuously monitor the axial load on the punch nose and the total axial load ... | 10/25/1988 |
| 4777814 | Method and apparatus for ejecting jammed billets from metal extrusion press Method and apparatus for removing a jammed billet from a container on a metal extrusion press in which a billet in a container is extruded through a die at the fore end of a die stem by relative movement of the die stem admitted into the container while t... | 10/18/1988 |
| 4744236 | Method of and apparatus for indirect extrusion Double-stem type extrusion method and apparatus used for extrusion-molding rod-like and tubular products. In order to upset a solid or hollow billet (5, 5A) supplied to a container (1), the end of the container (1) which is on the side of a press stem (6)... | 05/17/1988 |
| 4714423 | Evacuating device for plunger molding apparatus An evacuating device for a plunger molding apparatus including a material cylinder for receiving a blank to be extruded, a ram head slidably engageable in the material cylinder, a hydraulic plunger having a piston connected to the ram head, an evacuating ... | 12/22/1987 |
| 4658623 | Method and apparatus for coating a core material with metal Apparatus and method for coating a high tensile strength fibrous material with an extrudible, corrosion-resistant metal to form a composite, continuous wire using dies, a compression cylinder in fluid connection with the dies, a piston for forcing the met... | 04/21/1987 |
| 4635460 | Apparatus for and method of the plastic forming of materials Method of plastically deforming a body of malleable solid material between male and female dies which are forcible pressed together. The material is subjected to repeated identical pressing cycles; in each pressing cycle the force between the dies is conc... | 01/13/1987 |
| 4557131 | Device for indirect extrusion of a hollow section A device for indirect extrusion of a hollow section from a billet, in particular a hollow aluminum billet, which is presented to a shape-giving orifice of a die, which is such that a container can be passed over it, thus enclosing the die, and features in... | 12/10/1985 |
| 4550584 | Fixed dummy blocks An expandable fixed dummy block is provided for fixing on the end of a stem of an extrusion press. The dummy block has a longitudinally extending axis of symmetry and outer wall, a base having a central cavity symmetrical about the axis symmetry, and a ma... | 11/05/1985 |
| 4521360 | Methods of compaction by incremental radial compression and/or low-ratio extrusion A process of consolidating and compacting unconsolidated particulate materials such as powders with or without short fibers to a density of about one hundred percent by carrying out the process in a can or tube which is moving through a convergent die hav... | 06/04/1985 |
| 4416139 | Guiding a mandrel or punch for piercing or cold-extrusion A piercing mandrel or punch, particularly for backward extrusion, is guided by a member which centers the mandrel or punch in the upper die cavity and is coupled thereto until abutting a centering shoulder in the die cavity; the guiding and centering func... | 11/22/1983 |
| 4368634 | Extrusion punch and method of construction An extrusion punch, especially for use in a back extrusion process, wherein a hard wear resistant material is joined on one end to a steel punch body. The hard wear resistant material is joined on at the tip of a steel body so as to prevent wear due to ab... | 01/18/1983 |
| 4321816 | Metal tube and apparatus and method for manufacturing the same A thin-walled metal tube includes a tubular nipple section, a shoulder section joined to the nipple section, a tubular barrel section and a border section connecting the shoulder and barrel sections, the barrel section being defined by a wall having a thi... | 03/30/1982 |
| 4316373 | Method and apparatus for the extrusion of tubes of easily oxidized materials A tube extrusion press extrudes tubes through the annular space formed when a mandrel projects into the aperture of an extrusion die. In order to prevent oxidation of the extruded product, the outside of the tube passes into a cooling section immediately ... | 02/23/1982 |
| 4308742 | Method of and machine for extruding Metal billets to be used for extrusion are cast and quickly cooled to their solidifying temperature to minimize grain growth and are delivered to a tempering oven where they cool to the temperature required for extrusion, thus also evening the temperature... | 01/05/1982 |
| 4286453 | Device for securing the dummy block on the press stem of metal-extrusion presses The press stem of an extrusion press has a bolt or peg received in a central bore. The bolt locates in a recess in a dummy block, to hold the dummy block to the end of the stem. If the dummy block and stem are not correctly aligned, the bolt can be pushed... | 09/01/1981 |
| 4270378 | Extrusion punch An extrusion punch, especially for use in a back extrusion process, wherein a hard wear resistant material is joined on one end to a steel punch body. The hard wear resistant material is joined on at the tip of a steel body so as to prevent wear due to ab... | 06/02/1981 |
