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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 8061174 | Preventing voids in extruded teeth or splines An apparatus for extruding teeth in a blank includes a press that includes a lower die plate for supporting the blank thereon, and upper die plate that moves along an axis relative to the lower die plate. A mandrel, aligned with the axis, moves with the upper die pl... | 11/22/2011 |
| 7343768 | Method of net-forming an article and apparatus for same A method of forming an article such as a helical gear and an apparatus for forming the article are provided. The method includes applying pulsating pressure downward to extruding the work piece and, while the pressure is applied downward, injecting fluid to surround... | 03/18/2008 |
| 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 |
| 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 |
| 7205027 | Powder coating method providing enhanced finish characteristics A powder coating method that provides enhanced finish characteristics to a powder coated object. The object to be powder coated is vibrated such that the powder readily flows on the surface of the object. The improved flow of the applied powder results in a powder c... | 04/17/2007 |
| 7191630 | Method and apparatus for equal channel angular extrusion of flat billets The invention comprises a method and apparatus for equal channel angular extrusion (ECAE) of flat billets to control material structure and properties. The improvements of the method include the special systems of billet orientations, billet lubrication, billet ejec... | 03/20/2007 |
| 7117704 | Impact extrusion molded article, and impact extrusion molding method, and an impact extrusion molding apparatus An impact extrusion molded article that is molded while the metal-flow from a bottom of a slug set in a dice toward the side of the molded product article is suppressed; an impact extrusion molding method for manufacturing the impact extrusion molded article, and an... | 10/10/2006 |
| 7080539 | Forged knurled socket housing and method of manufacture A method for manufacturing a cartridge-type housing for a ball and socket joint in a vehicular suspension system comprises the steps of inserting a housing blank into a forging tool die, expanding the housing blank within the forging tool die using a forging tool pu... | 07/25/2006 |
| 7055359 | Method for forging/molding a coarse blank of an oil cylinder A method for forging/molding a coarse blank of an oil cylinder, including steps of: placing burn-in softened aluminum material into a preheated mold; using a first punch head to first forge the aluminum material in the mold cavity from outer side of the molding hole... | 06/06/2006 |
| 7040134 | Punch for forging a liquid ejection head A male die for forming a member incorporated in a liquid ejection head is disclosed. Each of a plurality of first forging punches is operable to form a first recess on a metal plate. The first forging punches are arranged at a fixed pitch to form a punch row in a fi... | 05/09/2006 |
| 7021171 | Annulus gear and drive shell A method of producing a torque transmission between a driving member and a driven member including the steps of capturing an annular gear within the interior of a hollow cylindrical shell formed of a formable material which is caused to be flow formed around a porti... | 04/04/2006 |
| 6945085 | Method of making metal containers Lightweight metal containers are formed from high-strength metal alloys by impact extrusion of a cup-shaped container having a substantially larger diameter than the finished container, drawing and wall ironing the extruded container to reduce its diameter and wall ... | 09/20/2005 |
| 6931904 | Method of forming a trailer receiver tube using hollow forward extrusion A method of forging a trailer receiver tube by providing a die having an inner surface defining a first portion and a second portion. Providing a hollow tube having an outer surface. Providing a punch having a body and a shaft extending therefrom sized to fit within... | 08/23/2005 |
| 6802197 | Process for manufacturing a high strength container, particularly an aerosol container, and the container obtained through such process A process for shaping a high strength container, particularly an aerosol container and a container obtained through such process. Generally, aerosol containers made of aluminum or tin are obtained by conventional embedding processes from sheet disks and have cylindr... | 10/12/2004 |
| 6753505 | Glow plugs and a method of producing glow plugs A method of producing a glow plug including a glow tube (5) with internal heating coil (4) and optionally regulating coils which are embedded therein using a ceramic filling, whereby a compaction of an area on a combustion chamber side of the glow tube... | 06/22/2004 |
| 6742240 | Method for attaching resonator part A method for attaching an additional object to a resonator body. The method includes the steps of (1) placing the additional object in a recess of a pushing part of an extrusion machine; (2) pressing the pushing part against a bloom of a resonator body; and (3) pull... | 06/01/2004 |
| 6705144 | Manufacturing process for a radial fin heat sink A heat dissipation system and method for extracting heat from an integrated circuit device includes a thermally conductive base having substantially planar upper and lower surfaces, the upper surface is disposed across from the lower surface, and the lower surface i... | 03/16/2004 |
| 6267684 | Rivets and rivet manufacturing methods The present invention comprises aluminum solid rivets and methods of manufacturing aluminum solid rivets for aircraft and other demanding applications to provide rivets with high strength and excellent driveabiltity while improving the rivets resistance t... | 07/31/2001 |
| 6266990 | Method for integrally manufacturing an one-piece forged hollow crank of a bicycle A method for integrally forming and manufacturing an one-piece forged hollow crank of a bicycle includes the following steps: (a) forging and molding a leading edge of a crank; (b) extruding a crank body; (c) forging and possibly sealing a rear end of the... | 07/31/2001 |
| 6189199 | Method of manufacturing a hose coupling from an intermediate blank material A method of manufacturing a hose coupling from an intermediate blank material, the hose coupling having an inner tube or tubular nipple portion, an outer tube or tubular sleeve portion and a head portion, all formed by plastic deformation from an intermed... | 02/20/2001 |
| 6189363 | Structure of molding tool for manufacturing cooling fins A molding tool is designed to make a cooling device and is formed of a lower mold, a lower mold housing, a punching head, and an urging plate. The lower mold is provided with a plurality of through holes. The lower housing is provided with a molding hole ... | 02/20/2001 |
| 6167739 | Filter and a method for manufacturing a filter The invention relates to a filter and a method for manufacturing a filter. The filter comprises a shell construction with a wall construction and a bottom portion, which form at least one section in the shell construction. The filter further comprises at ... | 01/02/2001 |
| 6142004 | Load-bearing shaped part and a method for manufacturing shaped parts A method is provided, which comprises the following steps: Firstly, a profiled material of aluminum is prepared. Then, a profiled piece of predetermined length is produced by cutting the profiled material to length. This profiled piece is then inserted in... | 11/07/2000 |
| 6098436 | Metalworking method and product obtained with the method A metalworking method, particularly for obtaining lengths of tube of various sizes and for various uses, made of steel having a carbon content between 0.10% and 0.50% with narrow tolerances. The method entails the provision, as initial material, of a roun... | 08/08/2000 |
| 6085405 | Method of fabricating a handlebar stem for a bicycle A handlebar stem fabrication method includes the steps of (a) selecting a metal ingot subject to the cavity of a first forming die and then operating the first forming die to process the selected metal ingot into an embryonic form having a front end secti... | 07/11/2000 |
| 6006579 | Method of fabricating shaft from metal plate A method of forming integrally an axis on a metallic plate at an arbitrary position thereof and perpendicular to a surface thereof. A first surface of the metallic plate is place on a first die having a first diameter opening and a second surface of the m... | 12/28/1999 |
| 5964117 | Backward extrusion method and product A method of forming a closed-end vessel by backward extrusion comprises providing an extrusion billet having a front surface with an axial recess and a body of an extrudable material positioned in the recess. Backward extrusion results in the formation of... | 10/12/1999 |
| 5732586 | Cold extrusion for helical gear teeth A process and apparatus for cold extruding gear teeth and projections comprises machining an annular ring gear blank with precision inside and outside diameters. The gear blank is mounted on a die ring which is arranged coaxially with respect to the blank... | 03/31/1998 |
| 5611454 | Extruded metal tubes An apparatus for forming an extruded cylindrical closed-ended metal tube having a flat end wall and an integrally formed projection on the end wall includes a die having a recess formed therein, the die having a configuration which corresponds to the term... | 03/18/1997 |
| 5377518 | Method and apparatus for forming extruded metal tubes An apparatus for forming an extruded cylindrical closed-ended metal tube having a flat end wall and an integrally formed projection on the end wall includes a die having a recess formed therein, the die having a configuration which corresponds to the term... | 01/03/1995 |
| 5325698 | Stepped extrusion die assembly A extrusion die assembly for cold extruding internally and/or externally toothed gears and the like, particularly internally toothed ring gears, with the mandrel for forming the internal teeth in the workpiece including axially successive sets of die teet... | 07/05/1994 |
| 5270676 | Method of making elements of a magnetic circuit in a loudspeaker A lower die having a first recess corresponding to one of outer shapes of the element, and an upper die having a second recess are provided. The outer diameter of the upper dies is smaller than the inner diameter of the first recess so that a gap is forme... | 12/14/1993 |
| 5055000 | Enclosed pump motor and housing thereof An enclosed pump motor includes an aluminum housing made by an impact extrusion process. The housing is cylindrical having an integrally-formed closed end with integral fastener bosses for attaching a pump thereto and an integrally-formed thickened cylind... | 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 |
| 4876868 | Method for forming an object of metal by cold pressing A method for forming in a single step metal slugs of tantalum, niobium or a base alloy of one of these metals, by cold pressing. A lubricant film is either an oxide coating on the metal, into which a polytetrafluorethylene of low molecular weight is embed... | 10/31/1989 |
| 4860567 | Ring forging process A process is described for producing forged ring articles from high strength, high temperature materials such as superalloys and titanium alloys. The material to be forged is conditioned and placed into a condition of low strength and high ductility. This... | 08/29/1989 |
| 4856824 | Method of manufacture of manifolds and manifold provided by such method An integral manifold for a heat exchanger is formed from a hollow shape having a plurality of individual risers, initially having substantially solid cross-sections and subsequently reshaped by means of a reverse impact extrusion process into hollow riser... | 08/15/1989 |
| 4706051 | Method of manufacturing a waveguide filter and waveguide filter manufactured by means of the method A waveguide filter (43) comprising a series of resonant cavities (45) separated by walls (47) each formed with an iris opening (49) is assembled from two complementary box-like bodies (25) each having an open side (31) and internal partitions forming port... | 11/10/1987 |
| 4509353 | Method of and apparatus for forming gears Gears are formed from annular blanks in a gear-forming apparatus including a die block formed with an axial bore and teeth radially projecting into the bore, a cylindrical punch sleeve axially movable toward and away from the bore in the die block, a mand... | 04/09/1985 |
| 4481082 | Method of making rings A method of making rings which includes the steps of placing tubes into a container, filling the container with a bonding material in liquid form, solidifying the bonding material within the container, slicing the container into wafers and then removing t... | 11/06/1984 |
