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| Number | Title | Issue Date |
| 8181500 | Die for extrusion molding of metal material A die 10 has a die case 20 arranged with a pressure receiving surface 22 of a pressure receiving portion 21 facing rearward so as to oppose to an extrusion direction, a male die 30 and a female die 40 mounted in the die case... | 05/22/2012 |
| 8104318 | Extrusion die for metallic material In some preferred embodiments, an extrusion die for metallic material capable of obtaining a high quality extruded article can be provide while securing sufficient strength and durability. The extrusion die is provided with a die holding case 20 having a dome... | 01/31/2012 |
| 8011219 | Method of controlling mandrel in a tube-extruding press The invention relates to a method for adjusting the position of a mandrel (10), which is situated in a hydraulic punch consisting of a cylinder and a ram that form a mandrel cylinder (8), in an extrusion press for producing pipes (2), which are ... | 09/06/2011 |
| 7793529 | Method for producing a formed body using a forming jig A method for producing a formed body including the steps of introducing a fluid material supplied from two or more material supply holes of a rectification plate into a drawing die, homogenizing the flow rate distribution of the fluid material in the drawing die usi... | 09/14/2010 |
| 7421874 | Main cylinder or press cylinder of an extrusion/tube extrusion press A press cylinder for an extrusion press having a cylinder beam has a cylinder housing fixed on the beam and a piston shiftable along an axis in opposite forward and rearward directions in the housing and defining with a rear end of the housing a pressurizable cylind... | 09/09/2008 |
| 7412864 | Method of forming trailer receiver The present invention relates to an improved method of forming a trailer receiver for use in connection with a trailer hitch assembly for towing trailers, campers, boats and the like. The invention relates to an improved method for forming a trailer receiver that ut... | 08/19/2008 |
| 7389668 | Metal molding method and machine, and metal molded body The present invention provides a metal molding method, a metal molding machine and a metal molded body, wherein using a mold in which a molding space having a predetermined shape and a metal body lead-in space which is communicated with the molding space are formed,... | 06/24/2008 |
| 7296452 | Metallic wire for grip rings, producing method and apparatus thereof, producing method and apparatus of grip rings for tube connector with use of metallic wire and grip rings for tube connector Disclosed are metallic wire with high surface quality and low-cost suitable for use as material for grip rings and a producing method and apparatus thereof. Metallic wire 34 deformed in a coil shape is passed through a shape correction unit 14 s... | 11/20/2007 |
| 7225868 | Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe (1) A steel pipe that is expanded radially in a state wherein it was inserted in a well such as an oil well, characterized in that the non-uniform wall thickness ratio E0 (%) before expanding satisfies the following expression {circle around (1)}. E... | 06/05/2007 |
| 7225658 | Method for manufacture of a metal shell, and a cup designed to serve as a blank The invention relates to manufacture of a cup (1) that is designed to serve as a blank in the production of a metal shell (2) by providing a body (3) of a bar material, placing the body (3) in a counterdie (6) in which a first end ... | 06/05/2007 |
| 7134308 | Extrusion press tool for producing a cylindrical body consisting of a plastic mass The invention relates to an extruder tool for producing a cylindrical body which consists of plastic mass and has at least one recess extending in the interior thereof. The extruder tool comprises an extruder nozzle which has a narrowing region and a nozzle mouthpie... | 11/14/2006 |
| 7093474 | Extrusion die for manufacturing tube with small hollow portions, mandrel used for said extrusion die, and multi-hollowed tube manu-factured by using said extrusion die An extrusion die for manufacturing a tube with a plurality of small hollow portions arranged in a width direction of the tube, includes a female die for defining an outer periphery of the tube and a mandrel combined with the female die. The mandrel includes a body p... | 08/22/2006 |
| 7020947 | Metal wire with filaments for biomedical applications A method for constructing a metal wire with embedded filaments or cavities therein for biomedical applications. The method includes first drilling nonconcentric apertures in a symmetrical pattern in a metal rod and then embedding filaments in the apertures. The meta... | 04/04/2006 |
| 6865919 | Method and apparatus for producing a refined grain structure The apparatus for operating on a workpiece includes a die defining first and second apertures and an interior therebetween. The first aperture and the interior of the die are structured to receive the workpiece. The interior of the die can be structured to shape the... | 03/15/2005 |
| 6841235 | Metallic nanowire and method of making the same A metallic nanowire having an aspect ratio of at least 100 and a diameter less than 200 nanometers composed of at least one of bismuth, indium, tin, lead, zinc, antimony and alloys of the same and a method of making the same from a thin film composite. ... | 01/11/2005 |
| 6681610 | Process for extruding tube having different sections and die for tube extrusion molding The present invention relates to an easy and cost effective process for extruding a tube having different intermediate sections in its longitudinal direction, and a die for forming a tube through this extrusion molding process. Tubes so formed may be used... | 01/27/2004 |
| 6581431 | Eccentric pipe sections An extrusion tool for an extrusion press for manufacturing seamless, eccentric pipe sections--in particular pipe sections with circular outer and inner contours--from extrusion blocks, in particular from extrusion billets. The extrusion tool contains a co... | 06/24/2003 |
| 6508001 | Method and apparatus for forming a wire A solid wire of precious metal, such as gold, is drawn through a die which has a groove forming element disposed in a drawing channel located between the inlet and outlet of the die. The hollow wire exiting the die has an eccentric longitudinal open groov... | 01/21/2003 |
| 6470726 | Method for manufacturing an extruded article changing in cross-section and an apparatus for extruding said extruded article An extruded article which has at least one hollow portion and changes in cross-section along a direction of an extrusion axis is manufactured by the method. The method includes the step of advancing a punch to extrude a billet while controlling a movement... | 10/29/2002 |
| 6412324 | Apparatus and method for forming a double ended upset pipe Apparatus for and method of extruding a metal pipe having a substantially uniform inner diameter. The forward and rearward end sections of the pipe are thicker than the middle section of the pipe. A heated metal billet having a cylindrical longitudinal bo... | 07/02/2002 |
| 6248277 | Continuous extrusion process and device for rods made of a plastic raw material and provided with a spiral inner channel Method and apparatus for the continuous extrusion of rods of plastic raw material. The rods contain at least one inner channel which is at least in part spiral-shaped. The raw material may be a powder-metallurgical or ceramic mass. The material is extrude... | 06/19/2001 |
| 6155092 | Apparatus and method for forming a double ended upset pipe Apparatus for and method of extruding a metal pipe having a uniform inner diameter, and forward and rearward end sections which are thicker than the middle section of the pipe. A metal billet having a bore is inserted into an open ended cylindrical bore o... | 12/05/2000 |
| 6116074 | Extrusion arrangement and process for manufacturing hollow-profile workpieces made of metal An extrusion arrangement is disclosed for manufacturing hollow-profile workpieces made of metal, including an extrusion die which is guided in an extrusion chamber and compresses material situated in the extrusion chamber. For forming an extruded hollow p... | 09/12/2000 |
| 6101858 | Forming method for forked artistic aluminum or copper alloy pipes A method for forming artistic forked pipes made of aluminum or copper alloy, including the steps of selecting of extruded material, milling for making an extruded pipe, enlarging the bore of a main pipe, and forming to form forked branch pipes. Wherein, a... | 08/15/2000 |
| 6047586 | Method for manufacturing a metal tube with at least one optical fiber therein A method is proposed for producing a metal tube (1) with one or several optical fibers (2) extending therethrough. Metal (10) applied to the surface of a frictional wheel (11) is conveyed to a retaining space (12) by applying pressure and temperature. The... | 04/11/2000 |
| 5904939 | Extruder for extrusion manufacturing An apparatus for manufacturing a rod of hard metal or ceramic with at least one helical inner bore. A plasticized mass of hard metal or ceramic is simultaneously forced through a die and twisted. Either the mass is twisted uniformly over the cross-section... | 05/18/1999 |
| 5813270 | Continuous extrusion apparatus A die top assembly engaging with a rotating wheel (not shown) of a continuous extrusion apparatus includes a die top (22) formed with a part cylindrical face (34) coacting with the wheel cylindrical surface and is positioned in a shoe held in contact with... | 09/29/1998 |
| 5765425 | Radial extrusion process combined with inside tune ironing A subject of the invention is the radial extrusion process combined with inside tube ironing, which is in essence a cold extrusion process and can be reckoned among bulk metal forming processes. It enables tube shaped metal semiproducts to be formed into ... | 06/16/1998 |
| 5730018 | Method of forming internal spline shaft A method of forming an internal spline shaft, comprising forming splines on an inner circumferential portion of a hollow stock by cold forging in such a way that a clearance "a" between an inner diameter of the hollow stock and an outer diameter of a tool... | 03/24/1998 |
| 5601857 | Extruder for extrusion manufacturing An extruder for extrusion manufacturing one of a hard metal and a ceramic rod with at least one helical inner bore and having a smooth outer surface substantially free of elevations and depressions includes a housing and a die connected to the housing. Th... | 02/11/1997 |
| 5595085 | Aluminum extruding machine An aluminum extruding machine which includes four guide rods connected between two opposite upright blocks above the machine base, a fixed die holder, a material carrying barrel moved on the guide rods relative to the die holder to carry molten aluminum, ... | 01/21/1997 |
| 5557962 | Long deformed extruded metallic shape and method for manufacturing said shape In producing a long extruded metal article of miscellaneous shapes, no post-working such as cutting is applied to the shaped long metal billet but extrusion of the metal billet and formation of miscellaneous shapes of the extruded article are effected bot... | 09/24/1996 |
| 5464340 | Extruder A core body (60) is disposed in a feed passage (40) in rear of an extrusion die (5), with the passage being provided to transport an extrusile material. One or more annular passageways (63) are formed between the outer periphery of the core body and the i... | 11/07/1995 |
| 5461898 | Method and apparatus for extrusion of tubing sheeting and profile shapes Method and apparatus for the extrusion of tubing, sheets and profile shapes, wherein shearing strains in the material being extruded through a die serve to orient the microstructures of the material so that its strength properties are improved in the dire... | 10/31/1995 |
| 5438858 | Extrusion tool for producing a hard metal rod or a ceramic rod with twisted internal boreholes The invention relates to a extrusion die tool for producing a hard metal or ceramic rod with at least one twisted internal bore (14). The nose (3) of the nozzle (2) has a smooth cylindrical channel (4). A bearer (6) is fitted coaxially inside the nozzle (... | 08/08/1995 |
| 5337477 | Methods and apparatus for forming tubular risers and manifolds including tubular risers A manifold for a heat exchanger is formed by placing a blank having a siamesed pair of tubular passages supported by a first mandrel into a die cavity which receives the blank and defines at least one riser channel extending from the cavity. Each riser ch... | 08/16/1994 |
| 5147662 | Twisted wire manufacturing apparatus and concentric twisted wire manufacturing machine A twisted wire manufacturing apparatus is provided with cradle which is suspended at a pair of rotating shafts having extreme ends opposed to each other through bearings. A main body of the wire twisting machine is mounted on the cradle. A raw material gu... | 09/15/1992 |
| 5072521 | Method of making electrical contact An electrical contact for switches, relays, voltage regulator and the like, which comprises a clad body having a contact segment of a contact stock such as silver, palladium or alloy thereof and a base segment of copper or its alloy, as a carrier of the c... | 12/17/1991 |
| 5061163 | Die assembly A die assembly for use in a continuous extrusion apparatus is made up of two cooperating members. The first member has tapered apertures therethrough disposed symmetrically about a mandrel portion. The mandrel portion cooperates with a throat portion in t... | 10/29/1991 |
| 5003806 | Apparatus for producing curvilinear tubes The present invention relates to an apparatus for producing three-dimensional curvilinear tubes. The apparatus comprises (a) a tube producing die having an axi-symmetric inner surface for passing tube material therethrough; (b) a core member having an axi... | 04/02/1991 |
