Patents Examined by Janelle Combs Morillo
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Patent number: 6733726Abstract: An aluminum-based die casting alloy exhibiting improved corrosion resistance and good die-castability contains from about 4.5 to about 12 percent silicon by weight, at least 87 percent aluminum by weight, from about 0.25 percent to about 0.6 percent manganese by weight, and a maximum of 0.2 percent copper by weight. The alloys preferably contain iron in an amount sufficient to improve hot tear resistance and to decrease the tendency for die sticking or soldering during die casting.Type: GrantFiled: August 8, 2002Date of Patent: May 11, 2004Assignee: Delphi Technologies, Inc.Inventor: Kurt F. O'Connor
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Patent number: 6726785Abstract: An aluminum alloy sheet material, containing 2.6% by mass or more and less than 3.5% by mass (% by mass is simply denoted by % hereinafter) of Si, 0.05 to 0.5% of Mg, 0.5% or more and less than 1.2% of Cu, 0.6 to 1.5% of Mn, 0.5 to 1.6% of Zn, and 0.3 to 2.0% of Fe, and containing, if necessary, at least one of 0.01 to 0.2% of Cr, 0.01 to 0.2% of Zr, 0.01 to 0.2% of V, and 0.01 to 0.2% of Ti, with the balance of Al and unavoidable impurities. A method of producing the aluminum alloy sheet material, which method contains carrying out specific workings.Type: GrantFiled: May 16, 2002Date of Patent: April 27, 2004Assignees: The Furukawa Electric Co., Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Koji Oyama, Yoichiro Bekki, Noboru Hayashi, Morio Kuroki
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Patent number: 6726786Abstract: The invention relates to processes for the production of a buckling-resistant stove-finished structural member from cold rolled and dressed strip (cold strip) non-ageing steel with high bake-hardening potential, more particularly of more than 70 N/mm2. The characterising feature of the invention is that the cold strip is converted by dressing into a yield point stretch-free state (Reh−Rel<2 N/mm2), then stored at a temperature below room temperature and further processed into the form of a structural member, whereafter the strip is finally stove finished.Type: GrantFiled: March 10, 2000Date of Patent: April 27, 2004Assignee: Thyssen Krupp Stahl AGInventors: Rolf Bode, Ilse Heckelmann
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Patent number: 6723184Abstract: An aluminum alloy which is able to use not only expensive TiC particles, but also inexpensive dispersed reinforcing particles and which is further raised in high temperature strength without requiring an increase in dispersed reinforcing particles, comprised of Sn: 2 to 20 wt %, Cu: 0.1 to 3 wt %, Ca: 0.02 to 1.5 wt %, at least one element selected from the group comprised of Mg, Cr, Zr, Mn, V, Ni, and Fe: not more than 2 wt % in total, at least one type of reinforcing particle selected from the group comprised of TiC particles, ZrC particles, and Al2O3 particles: 0.1 to 5 vol % in total, and the balance of Al and unavoidable impurities; a slide bearing comprised of that aluminum alloy; and a slide bearing comprised of a bearing body made of that aluminum alloy provided on its surface with a resin coating layer comprised of a heat-curing resin and a solid lubricant.Type: GrantFiled: February 25, 2003Date of Patent: April 20, 2004Assignee: Taiho Kogyo Co., Ltd.Inventors: Kazuaki Sato, Yoshio Fuwa, Takashi Tomikawa, Shinichiro Sakamoto
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Patent number: 6723281Abstract: The present invention relates to a metal material for electronic parts, electronic parts, electronic apparatuses, a method of processing metal materials, and electro-optical parts. For example, the present invention is applied to liquid crystal display panels, various semiconductor devices, wiring boards, chip parts, and the like. The present invention proposes a metal material for electronic parts which is characterized by lower resistivity, higher stability, and more excellent processability than the prior art. The present invention also proposes electronic parts and electronic apparatuses which use this metal material. An applicable metal material is an alloy containing Ag as a main component, 0.1 to 3 wt % of Pd, and 0.1 to 3 wt % in total of elements such as Al.Type: GrantFiled: July 11, 2000Date of Patent: April 20, 2004Assignees: Sony Corporation, Furuyametals Co., Ltd.Inventors: Takashi Ueno, Katsuhisa Aratani
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Patent number: 6716390Abstract: An aluminum alloy extruded material for automotive structural members, which contains 2.6 to 5 wt % of Si, 0.15 to 0.3 wt % of Mg, 0.3 to 2 wt % of Cu, 0.05 to 1 wt % of Mn, 0.2 to 1.5 wt % of Fe, 0.2 to 2.5 wt % of Zn, 0.005 to 0.1 wt % of Cr, and 0.005 to 0.05 wt % of Ti, and satisfies relationship of the following expression (I), (Content of Mn (wt %))+0.32×(content of Fe (wt %))+0.097×(content of Si (wt %))+3.5×(content of Cr (wt %))+2.9×(content of Ti (wt %))≦1.36 (I) with the balance being made of aluminum and unavoidable impurities. A method of producing the aluminum alloy extruded material for automotive structural members, which comprises cooling with a refrigerant from outside of a die-exit side, at the time of extrusion.Type: GrantFiled: December 15, 2000Date of Patent: April 6, 2004Assignees: The Furukawa Electric Co., Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Yoichiro Bekki, Noboru Hayashi
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Patent number: 6706126Abstract: Aluminum alloy, which consists of from 2 to 20% by weight of Sn, from 3% by weight or less of Cu, and from 0.3 to 5% by volume of TiC particles, the balance being Al and unavoidable impurities, exhibits improved fatigue resistance at a high temperature region, while maintaining compatibility at low temperature notwithstanding improved fatigue resistance.Type: GrantFiled: April 25, 2001Date of Patent: March 16, 2004Assignees: Taiho Kogyo Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Toru Desaki, Soji Kamiya, Kazuaki Sato, Yukio Okouchi, Tetsuya Nukami
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Patent number: 6702907Abstract: A process for producing an aluminum alloy-made forged scroll part includes a step of casting an aluminum alloy material into a round bar having a diameter of 130 mm or less, the aluminum alloy material comprising 8.0-12.5 mass % of Si, 1.0-5.0 mass % of Cu and 0.2-1.3 mass % of Mg; a step of cutting the aluminum alloy round bar into a stock material for forging; a step of subjecting the stock material to upsetting at an upsetting ratio of 20-70% to form a pre-shaped product that is a workpiece; and a forging step of applying pressure onto the workpiece with a punch at a temperature of 300-450° C. to form a scroll wrap in a direction of the punch pressure, and wherein the forging step includes a single step in which a forged scroll part is press-formed while a back pressure smaller than the punch pressure is applied to an end of the scroll wrap in a direction opposite to the punch pressure direction.Type: GrantFiled: March 20, 2002Date of Patent: March 9, 2004Assignee: Showa Denko K.K.Inventors: Masahiro Sato, Fumihiko Ohmi, Yuichi Ogura
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Patent number: 6695935Abstract: Aluminum-magnesium alloy product for welded mechanical construction, having the following composition, in weight percent: Mg 3.5-6.0, Mn 0.4-1.2, Zn 0.4-1.5, Zr 0.25 max., Cr 0.3 max., Ti 0.2 max., Fe 0.5 max., Si 0.5 max., Cu 0.4 max.; one or more selected from the group: Bi 0.005-0.1, Pb 0.005-0.1, Sn 0.01-0.1, Ag 0.01-0.5, Sc 0.01-0.5, Li 0.01-0.5, V 0.01-0.3, Ce 0.01-0.3, Y 0.01-0.3, and Ni 0.01-0.3; others (each) 0.05 max., (total) 0.15 max.; and balance aluminum.Type: GrantFiled: February 15, 2002Date of Patent: February 24, 2004Assignee: Corus Aluminium Walzprodukte GmbHInventors: Alfred Johann Peter Haszler, Desikan Sampath
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Patent number: 6692590Abstract: An alloy is described that is capable of forming a metallic glass at moderate cooling rates and exhibits large plastic flow at ambient temperature. Preferably, the alloy has a composition of (Zr, Hf)a TabTicCudNieAlf, where the composition ranges (in atomic percent) are 45≦a≦70, 3≦b≦7.5, 0≦c≦4, 3≦b+c≦10, 10≦d≦30, 0≦e≦20, 10≦d+e≦35, and 5≦f≦15. The alloy may be cast into a bulk solid with disordered atomic-scale structure, i.e., a metallic glass, by a variety of techniques including copper mold die casting and planar flow casting. The as-cast amorphous solid has good ductility while retaining all of the characteristic features of known metallic glasses, including a distinct glass transition, a supercooled liquid region, and an absence of long-range atomic order. The alloy may be used to form a composite structure including quasi-crystals embedded in an amorphous matrix.Type: GrantFiled: September 25, 2001Date of Patent: February 17, 2004Assignee: Johns Hopkins UniversityInventors: Li-Qian Xing, Todd C. Hufnagel, Kaliat T. Ramesh
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Patent number: 6679958Abstract: An ageing process capable of producing an aluminum alloy with better mechanical properties than possible with traditional ageing procedures. The ageing process employs a dual rate heating technique that comprises a first stage in which the aluminum alloy is heated at a first heating rate to a temperature between 100 and 170° C. and a second stage in which the aluminum alloy is heated at a second heating rate to a hold temperature of 160 to 220° C. The first heating rate is at least 100° C./hour and the second heating rate is 5 to 50° C./hour. The entire ageing process is performed in a time of 3 to 24 hours.Type: GrantFiled: June 5, 2002Date of Patent: January 20, 2004Assignee: Norsk HydroInventors: Ulf Tundal, Reiso Oddvin
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Patent number: 6676899Abstract: A chemical composition of alloys, in particular naturally hard semifinished-material alloys, which are intended to be used in this form as material for semifinished materials. A naturally hard aluminum alloy for semifinished materials which, in addition to magnesium, titanium, beryllium, zirconium, scandium, and cerium, is also made of manganese, copper, zinc, and an element group containing iron and silicon, the ratio of iron to silicon being in the range of 1 to 5.Type: GrantFiled: November 12, 2002Date of Patent: January 13, 2004Assignee: Eads Deutschland GmbHInventors: Valentin Georgijevich Davydov, Yuri Filatov, Blanka Lenczowski, Viktor Yelagin, Valeri Zakarov
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Patent number: 6676775Abstract: A recrystallization-hardenable aluminum cast alloy includes in addition to aluminum the following elements as functional elements: (1) 5 to 10 weight % silicon, (2) 0.2 to 0.35 weight % magnesium, (3) 0.3 to 3 weight % nickel and/or 0.6 to 3 weight % cobalt, and impurities due to manufacturing.Type: GrantFiled: December 17, 2001Date of Patent: January 13, 2004Assignee: DaimlerChrysler AGInventors: Andreas Barth, Mohamed Douaoui
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Patent number: 6676898Abstract: A bearing and a bearing alloy composition are described, the bearing alloy comprising in weight %: tin 5-10; copper 0.7-1.3; nickel 0.7-1.3; silicon 1.5-3.5; vanadium 0.1-0.3; manganese 0.1-0.3; and the balance being aluminium apart from unavoidable impurities.Type: GrantFiled: December 11, 2000Date of Patent: January 13, 2004Assignee: Dana CorporationInventors: Kenneth Macleod McMeekin, Ian David Massey
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Patent number: 6676897Abstract: The invention relates to a high-temperature alloy for a mechanically highly stressed component of a thermal machine based on doped TiAl and a method to improve a mechanical property of the alloy. The alloy has the following composition (in atomic %): 44.5 to <46 Al, 1-4 W, 0.1-1.5 Si, 0.0001-4 B, and the rest Ti and contaminations due to the manufacturing process. The alloy is characterized by improved heat resistance and ductility at high temperatures, and at the same time good oxidation and corrosion resistance.Type: GrantFiled: October 3, 2001Date of Patent: January 13, 2004Assignee: Alstom (Switzerland) LtdInventors: Mohamed Nazmy, Markus Staubli
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Patent number: 6673168Abstract: An aluminum-based material for anti-friction bearings composed of an aluminum alloy with 10-25 wt % tin or 5-25 wt % lead, impurity-caused components characterized by 0.75-2.5 wt % iron and an alloy additive capable of forming an intermetallic compound having a spherical phase homogeneously distributed in the aluminum alloy. The alloy additive is one of: a) manganese and silicon, in which the weight percentage fractions of manganese and silicon are at least half the weight percentage fraction of the iron and for manganese, at most 3 wt %, and for silicon, at most 2 wt %; b) 0.1-0.5 wt % cobalt; and c) 0.1-0.5 wt % molybdenum.Type: GrantFiled: November 20, 2000Date of Patent: January 6, 2004Assignee: KS Gleitlager GmbHInventors: Karl-Heinz Matucha, Thomas Steffens, Werner Schubert
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Patent number: 6669791Abstract: A TiAl based alloy having excellent strength as well as an improvement in toughness at room temperature, in particular an improvement in impact properties at room temperature, and a production method thereof, and a blade using the same are provided. This TiAl based alloy has a microstructure in which lamellar grains having a mean grain diameter of from 1 to 50 &mgr;m are closely arranged. The alloy composition is Ti-(42-48)Al-(5-10) (Cr and/or V) or Ti-(38-43)Al-(4-10)Mn. The alloy can be obtained by subjecting the alloy to high-speed plastic working in the cooling process, after the alloy has been held in an equilibrium temperature range of the &agr; phase or the (&agr;+&bgr;) phase.Type: GrantFiled: February 22, 2001Date of Patent: December 30, 2003Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Toshimitsu Tetsui, Kentaro Shindo, Masao Takeyama
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Patent number: 6663729Abstract: An aluminum alloy foil is formed from an alloy containing about 1.2 to 1.7% by weight Fe and about 0.35 to 0.80% by weight Si, with the balance aluminum and incidental impurities. The alloy is continuously strip cast to form a strip having a thickness less than about 25 mm, which is then cold rolled to interanneal gauge and interannealed at a temperature of at least 400° C. The interannealed strip is cold rolled and further annealed to form the final foil product, having excellent rollability combined with high strength of the final foil.Type: GrantFiled: February 13, 2001Date of Patent: December 16, 2003Assignee: Alcan International LimitedInventors: Iljoon Jin, Kevin Gatenby, Christopher Gabryel, Toshiya Anami, Takahiko Watai, Ichiro Okamoto
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Patent number: 6660107Abstract: A corrosion resistant aluminum alloy has controlled amounts of iron, manganese, chromium, and titanium along with levels of copper, silicon, nickel, and no more than impurity levels of zinc. The alloy chemistry is tailored such that the electrolytic potential of the grain boundaries matches the alloy matrix material to reduce intergranular corrosion. The alloy is particularly suited for the manufacture of tubing for heat exchangers using extrusion and brazing techniques.Type: GrantFiled: August 20, 2002Date of Patent: December 9, 2003Inventor: Baolute Ren
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Patent number: 6660105Abstract: A case hardening steel having good-grain coarsening prevention properties during carburization. The steel comprises, by weight, 0.1 to 0.4%. C, 0.02 to 1.3% Si, 0.3 to 1.8% Mn, 0.001 to 0.15% S, 0.015 to 0.04% Al, 0.005 to 0.04% Nb, 0.006 to 0.020% N, one, two or more selected from 0.4 to 1.8% Cr, 0.02 to 1.0% Mo, 0.1 to 3.5% Ni, 0.03 to 0.5% V, and in which P is limited to not more than 0.025%, Ti is limited to not more than 0.010%, and O is limited to not more than 0.0025%, with the balance being iron and unavoidable impurities, the steel being characterized in that, following hot rolling, the steel has a Nb(CN) precipitation amount of not less than 0.005% and an AlN precipitation amount that. is limited to not more than 0.005%.Type: GrantFiled: May 19, 1999Date of Patent: December 9, 2003Assignee: Nippon Steel CorporationInventors: Tatsuro Ochi, Manabu Kubota