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| Number | Title | Issue Date |
| 8091400 | Device and method for forming a workpiece The present invention relates to a device for forming, in particular for cold forming, here in particular for cold extruding, a workpiece, which device has a forming die and a feed device by means of which a relative movement can be generated between the workpiece a... | 01/10/2012 |
| 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 |
| 7114362 | Method of making metal workpiece A method for draw forming a desired contour to the outer diameter of a tubular work piece provides that the selected work piece have a wall thickness uniform throughout its length. The outer diameter of selected work piece is reduced along essentially only a part of... | 10/03/2006 |
| 6865920 | Indirect extrusion method of clad material A clad billet 120 has a core material 122 of which outer surface is coated by a coating material 124. A circular front plate 126 is provided at the head of the clad billet 120. The front plate 126 is made of the same materia... | 03/15/2005 |
| 6594894 | Planar-processing compatible metallic micro-extrusion process Micromachined extrusions on the micrometer scale is realized using compressive stresses resulting from electromigration-induced mass transport in planarized conductors. Extrusions are formed through simple die patterns etched through a passivation layer o... | 07/22/2003 |
| 6484548 | Drive system for a metal extrusion press A drive system for the container holder and the travelling beam of a metal extruder press in which a return stroke is accelerated by connecting the annular chambers of the travelling beam and container holder cylinders to a pressurization force and with t... | 11/26/2002 |
| 6212929 | Device and method for forming, in particular cold-forming, workpieces Described is an apparatus for the cold-forming, in particular for the cold extrusion of a workpiece, which has a die (3) and a feeding device (5) by means of which a relative motion can be produced between the workpiece (2) and the die (3). It is provided... | 04/10/2001 |
| 6082162 | Multiple-cylinder extrusion press An extruding press has a housing defining an axis, an end frame displaceable axially on the housing, and a plurality of cylinders on the housing. Respective pistons having axially oppositely directed front and rear faces subdivide the cylinders into front... | 07/04/2000 |
| 5931041 | Reverse extruding press and process for releasing a billet The purpose of the invention is a reverse extruding press perfected for releasing a billet jammed in the container. According to the invention, the obturator (31) of the rear surface of the container with a thickness (e) can be replaced, by displacement t... | 08/03/1999 |
| 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 |
| 4895506 | Extrusion press A direct or indirect extrusion press is disclosed, which includes a container (20) that defines a chamber (19) to hold a billet (11) to be extruded, a ram (12), a die (14), a die holder (41), a base (13) and a shears (15) to shear heels (17) of the billet... | 01/23/1990 |
| 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 |
| 4785652 | Indirect extrusion press with ram-mounted turret supporting tooling An indirect extrusion press and method of operating the press. The press includes a container with opposite axial ends and an axial cavity for receiving a billet. The container is mounted for aligning the axial cavity with the extrusion axis. A bolster is... | 11/22/1988 |
| 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 |
| 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 |
| 4750345 | Recycling pressure plates and dies in extrusion presses For recycling the dies and pressure plates, in an extrusion press designed to perform both direct and indirect extrusion, a common conveyor extends beside the press between a device for stripping extrusion residue from the dies, and a device for separatin... | 06/14/1988 |
| 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 |
| 4703639 | Apparatus and process for forced lubrication piercing Pressurized fluid, pressurized in excess of the yield strength of a billet or rod, is communicated to the exterior of a piercing punch during piercing of the billet or rod to produce tubing, the pressurized fluid is provided to the exterior of the piercin... | 11/03/1987 |
| 4696176 | Pullback type double-acting indirect extrusion press A pullback type indirect extrusion press capable of extruding a tubular article, the press including first and second movable platens connected to each other by columns, the movable platens being arranged in front of and behind a fixed platen, a mechanism... | 09/29/1987 |
| 4631949 | Method of loading billet in the indirect extruding press A method of loading billet in the indirect extruding press for an alignment of the billet in which, after the billet (10) is held between the dummy block (11) at the side of the extruding stem (4) and the surface of the dies (6) of the dies stem (3), the ... | 12/30/1986 |
| 4606210 | Extrusion press for manufacturing extruded sections from metal billets A process and apparatus for the indirect extrusion of hollow sections over a mandrel having a diameter dD from a plurality of billets each having a diameter don wherein the volume throughput of metal is greater than that obtained by ... | 08/19/1986 |
| 4606211 | Indirect extrusion press An indirect extrusion press in which a seal block (16) is provided with a disc portion (18) to be fitted in a billet receiving bore (25) of a container (24) and is also provided with a cylindrical portion (19) contiguous to the disc portion (18) and havin... | 08/19/1986 |
| 4570473 | Extrusion press An extrusion press including butt shearing means and cooperating die receiving and holding means carried by the crosshead which supports the free end of the main ram.... | 02/18/1986 |
| 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 |
| 4522052 | Processes and devices for the drawing of tubes by extrusion A process and device for drawing tubes by extrusion of a metal billet (4) placed in a receptacle (50) within which ramming of the billet (4) is carried out by first pushing the latter against a ramming insert (63) closing the receptacle (50), then perfora... | 06/11/1985 |
| 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 |
| 4484466 | Device for removing a die, a discard and a closing plate from an indirect metal extrusion press After extrusion in an indirect metal extrusion press a removal arm, the end of which carries a holding sleeve for a die, a discard and a closing plate, is swung into the press axis between the billet carrier and the closing ram. The sleeve is divided into... | 11/27/1984 |
| 4475372 | Method and means for removing a die, sealing member and residual metal from an indirect extrusion press An indirect extrusion press has a die and die holder 20 and a sealing plate to close the billet carrier. After extrusion, a one-piece or two-part holding sleeve is placed between the sealing plate and the sealing stem and the latter is advanced to push th... | 10/09/1984 |
| 4463589 | Indirect extrusion press An indirect extrusion press including a die assembly having a loose die detachably mounted on a die stem and axially movable relative to a billet container for extruding a billet through a die hole, and a die handling mechanism for transferring the die as... | 08/07/1984 |
| 4462234 | Rapid extrusion of hot-short-sensitive alloys High-strength aluminum alloys and other hot-short-sensitive alloys can be extruded at rapid rates through a cooled, double reduction die (3) without hot-short cracking or scoring caused by die pickup. A primary reduction die (4) has a long, cooled primary... | 07/31/1984 |
| 4459837 | Method of indirect extrusion of metal This invention provides an indirect metal extrusion method, in which free die system is adopted. A die (8) of two-stepped structure is capable of removing shell or outer layer of a billet simultaneously at the time of extrusion, and eliminating the contai... | 07/17/1984 |
| 4430877 | Method and cleaning container on indirect extrusion press A method for cleaning inner surfaces of a container on an indirect extrusion press, using a loose die including an extruding die portion and a separable cleaning die portion. The die is continuously used after contributing to the cleaning in each cycle of... | 02/14/1984 |
| 4425775 | Methods for extrusion Two elongated gripping members (12,12) cooperate to form a closed pressure chamber about a waxed billet (61). The gripping members are reciprocated relative to an extrusion station (13), such reciprocation first moving the pressure chamber toward and past... | 01/17/1984 |
| 4424696 | Indirect extrusion press An indirect extrusion press including a press frame body of the Rahmen structure. The press frame body is formed of a press platen and a main cylinder frame, which are rigidly connected together. Movably disposed between the press platen and main cylinder... | 01/10/1984 |
| 4402208 | Indirect extrusion press with die changer In an indirect extrusion press provided with a gate lock and a rearwardly extending indirect-extrusion stem, the stem normally extends through a die slide with the rear end of the stem engaged by a loose die disposed in the front end of a billet container... | 09/06/1983 |
| 4399676 | Mandrel cleaning device for extrusion press A mandrel cleaning device capable of automatically performing cleaning operation in an extrusion press of the type which has a pressurizing stem for pressing a billet in a container toward a die and a mandrel axially slidable in and relative to the pressu... | 08/23/1983 |
| 4386513 | Method of production of metal wires A method of reducing the cross-sectional area of one or more extruded wires as a combined effect of drawing and rolling, by passing the wires through reduction rollers driven at a peripheral speed which exceeds the greatest extrusion speed of any of the w... | 06/07/1983 |
| 4379398 | Pull-back type indirect extrusion press A pull-back type indirect extrusion press is designed so that the scalping of billets can be effected inside the press independently of extrusion cycles and the scalped billet is allowed to stand by in a billet extrusion standby space which is provided wi... | 04/12/1983 |
| 4365497 | Intermediate frame type indirect extrusion press In an indirect extrusion press of the type wherein a die stem is connected to a press axis on the rear end surface of a press platen and extends towards a container, an intermediate frame type indirect extrusion press including an intermediate frame movab... | 12/28/1982 |
| 4345450 | Reverse extrusion press In an indirect extrusion drawing press comprising a fixed crosspiece to which is fixed a tubular ram which is perforated by an axial orifice for the removal of the wire, a fixed bearing member, a movable crosspiece which is moved by a main jack bearing ag... | 08/24/1982 |
