Copper(cu) Or Copper Base Alloy Patents (Class 148/532)
  • Patent number: 10431397
    Abstract: A contact for an electrical switch has a first spring with an upper side and an opposite lower side, a second spring layered on the lower side, and a contact element located on the upper side and bonded to the second spring.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: October 1, 2019
    Assignee: Tyco Electronics Austria GmbH
    Inventor: Markus Gutmann
  • Patent number: 10023433
    Abstract: A support for an elevator car in an elevator installation includes a plurality of tensile carriers, arranged parallel to one another, and a casing. The tensile carriers are enclosed by the casing, wherein the tensile carriers extend along a longitudinal axis of the support. The tensile carriers are freed at least partly from the casing on a section of the longitudinal axis of the support. Contact elements for electrical contacting of the exposed tensile carriers are fastened to the tensile carriers at this section.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: July 17, 2018
    Assignee: INVENTIO AG
    Inventors: Florian Dold, Volker Zapf, Wolf Neumann-Henneberg
  • Patent number: 9068255
    Abstract: Provided is a zinc-plated steel sheet for hot pressing having outstanding surface characteristics, comprising: a steel foundation plate comprising a metal surface diffusion layer of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr; an aluminum-rich layer containing at least 30 wt. % of aluminum formed on the surface diffusion layer, and a zinc plating layer formed on the aluminum-rich layer. In this way, a metal having a low affinity for oxygen is coated to an effective thickness prior to annealing and thus the creation of annealing oxides at the surface of the steel sheet is suppressed and a uniform zinc plating layer is formed, and alloying of the zinc plating layer is promoted during press-processing heat treatment. Cracking in the steel foundation plate during hot press molding is prevented.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: June 30, 2015
    Assignee: POSCO
    Inventors: Il-Ryoung Sohn, Jong-Sang Kim, Joong-Chul Park, Yeol-Rae Cho, Jin-Keun Oh, Han-Gu Cho, Bong-Hoon Chung, Jong-Seog Lee
  • Publication number: 20130230763
    Abstract: A method of producing a bowl-shaped housing half-part provided with a copper alloy interiorly of the housing of a mercury-free button cell includes (1) providing a clad material with a layer of nickel, a layer of copper and an intermediate layer of steel or high-grade steel, which is provided on a copper side with an additional coating including at least one metal selected from the group consisting of tin, zinc, indium and bismuth, (2) shaping a bowl-shaped housing half-part made of the clad material, wherein the layer of nickel forms an outside portion and the additional coating forms an inside portion of the bowl-shaped housing half-part, and (3) heat treating the housing half-part at a temperature where the at least one metal selected from the group consisting of tin, zinc, indium and bismuth is alloyed with the copper of the copper layer.
    Type: Application
    Filed: November 22, 2011
    Publication date: September 5, 2013
    Applicant: Varta Microbattery GmbH
    Inventors: Kemal Akca, Cornelia Csrenko, Bernd Kreidler, Renate Freudenberger
  • Publication number: 20120280485
    Abstract: Methods for welding a first metal part to a second metal part by a solid state process to form a welded article having at least a welded region are provided herein. The welded region of the weld is post-weld aged by heating it to a set temperature for a set time and compressing the weld.
    Type: Application
    Filed: May 3, 2012
    Publication date: November 8, 2012
    Inventors: Israel Stol, Stephen Makosey, John Cobes, Daniel Bergstrom
  • Patent number: 8202626
    Abstract: A brass-plated steel wire for reinforcing rubber articles capable of surely improving adhesiveness between brass-plated steel wire and rubber and a method for manufacturing the same.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: June 19, 2012
    Assignee: Kabushiki Kaisha Bridgestone
    Inventors: Shinichi Musha, Kiyotaka Sueyoshi
  • Patent number: 7740285
    Abstract: A threaded joint for steel pipes comprised of a pin (1) and a box (2) each having a threaded portion (1a, 2b) and an unthreaded contact portion (1b, 2a) exhibits adequate leakage resistance and galling resistance when used for makeup of oil country tubular goods with application of a green dope or even without any dope. The threaded joint has a first plating layer of Sn—Bi—Cu alloy plating formed on the contact surface of at least one of the pin (1) or the box (2). The first plating layer may have a second plating layer selected from Sn plating, Cu plating, and Ni plating on its lower side and at least one layer of a lubricating coating, and particularly a solid lubricating coating on its upper side.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: June 22, 2010
    Assignees: Sumitomo Metal Industries, Ltd., Vallourec Mannesmann Oil & Gas France
    Inventors: Shigeo Nagasaku, Kunio Goto, Shigeo Onishi, Hiroaki Ikegami
  • Publication number: 20100068557
    Abstract: The invention relates to a plain bearing composite material with a supporting layer made of steel, a bearing metal layer made of a copper alloy, and with a lining applied to the bearing metal layer. The copper alloy can contain 0.5 5% by weight of nickel, 0.2 to 2.5% by weight of silicon and=0.1% by weight of lead. The lining can be a sputtered layer that is applied without an intermediate layer. The invention also relates to methods for producing this composite material.
    Type: Application
    Filed: May 13, 2006
    Publication date: March 18, 2010
    Inventor: Gerd ANDLER
  • Publication number: 20090263053
    Abstract: The invention relates to a plain bearing composite material with a supporting layer made of steel, a bearing metal layer made of a copper alloy, and with a lining applied to the bearing metal layer. The copper alloy can contain 0.5 5% by weight of nickel, 0.2 to 2.5% by weight of silicon and =0.1% by weight of lead. The lining can be an electrodeposited layer, a sputtered layer or a plastic layer. The invention also relates to methods for producing this composite material.
    Type: Application
    Filed: May 13, 2006
    Publication date: October 22, 2009
    Inventor: Gerd Andler
  • Patent number: 7267733
    Abstract: A copper base alloy, which is resistant or immune to carburization, metal dusting and coking, and resistant to oxidation, the alloy having the following composition (all contents in weight %): Al >0-15 Si 0-6 Mg 0-6 one or more of the group of Rare Earth Metal (REM), yttrium, hafnium, zirconium, lanthanum, cerium) up to 0.3 wt. % each; Cu balance; and normally occurring alloying additions and impurities. Related articles of manufacture and methods are also described.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: September 11, 2007
    Assignee: Sandvik Intellectual Property AB
    Inventors: Peter Szakalos, Mats Lundberg, Johan Hernblom
  • Patent number: 7041252
    Abstract: A copper base alloy, which is resistant or immune to carburization, metal dusting and coking, and resistant to oxidation, the alloy having the following composition (all contents in weight %): Al >0–15 Si 0–6 Mg 0–6 one or more of the group of Rare Earth Metal (REM), yttrium, hafnium, zirconium, lanthanum, cerium) up to 0.3 wt. % each; Cu balance; and normally occurring alloying additions and impurities. Related articles of manufacture and methods are also described.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: May 9, 2006
    Assignee: Sandvik Intellectual Property AB
    Inventors: Peter Szakalos, Mats Lundberg, Johan Hernblom
  • Publication number: 20040261922
    Abstract: The invention relates to a wrought aluminium-magnesium alloy product, having a composition (in wt. %) of: 3.1<Mg<4.5; 0.4<Mn<0.85; 0.4<Zn<0.8; 0.06<Cu<0.35; Cr<0.25; Fe<0.35; Si<0.2; Zr<0.25; Ti<0.3; others≦0.05, each up to a total of max. 0.15, and balance aluminium.
    Type: Application
    Filed: August 27, 2004
    Publication date: December 30, 2004
    Inventors: Job Anthonius Van Der Hoeven, Linzong Zhuang, Bruno Schepers, Peter De Smet, Jean Pierre Jules Baekelandt
  • Publication number: 20040197598
    Abstract: A stainless steel/Cu clad which has high-temperature strength enough to be not easily deformed and be sufficiently practical and high thermal conductivity for a high temperature use, and a manufacturing method of such a clad. The stainless steel/Cu clad of the invention is formed by bonding a high Mn austenitic stainless steel containing 9-16 mass % Mn and Cu metallically. Manufacturing of the stainless steel/Cu clad is carried out as follows. That is, a first sheet made of the high Mn austenitic stainless steel, a second sheet made of Cu, and a third sheet of a heat resisting steel which acts as a peeling material are wound in a coil shape in a state where they are laminated in such order and, subsequently, the obtained coil is vacuum-annealed, thereby bonding them and manufacturing the high Mn austenitic stainless steel/Cu clad having high-temperature strength and high-thermal conductivity.
    Type: Application
    Filed: March 25, 2004
    Publication date: October 7, 2004
    Inventors: Daisuke Imai, Masahiro Sasaki, Katunori Shirae
  • Publication number: 20040118486
    Abstract: To achieve a drawn wire with a tensile strength defined by the equation of Y=Yoexp(A2&egr;d) wherein Y is the tensile strength in MPa (N/mm2), Yo is the strength of as patented wire, A2 is a coefficient dependant on wire chemistry and drawing conditions, and &egr;d is a total true drawing strain, a high carbon steel wire contains 0.95 to 1.3% carbon and a combination of chromium, manganese, silicon, cobalt, niobium, and boron is processed such that the bright wire of an intermediate diameter has a structure void of micro cracks, patented to produce a desired microstructure with defined inter-lamella spacing and austenite grain, coated with brass, and fine drawn with an optimized die draft schedule at a specified true strain.
    Type: Application
    Filed: December 18, 2002
    Publication date: June 24, 2004
    Inventors: Michael Gregory Zelin, Thomas Walter Starinshak, James Terry Lewis
  • Patent number: 6740179
    Abstract: A method for making a joint between copper or copper alloys and austenitic steel alloys, in which method in between the junction surfaces of the objects to be joined together, there is arranged at least one intermediate layer, so that the junction surfaces, including their intermediate layers, are pressed together, and at least the junction area is heated in order to create a diffusion joint. In the method, there is brought a first intermediate layer (3) on the junction surface of the steel object (2) or against said surface, in order to activate the creation of the diffusion joint.
    Type: Grant
    Filed: August 14, 2002
    Date of Patent: May 25, 2004
    Assignee: Outokumpu Oyj
    Inventors: Vëikko Polvi, Pekka Taskinen, Tuija Suortti
  • Patent number: 6737175
    Abstract: A method for inhibiting metal dusting corrosion of surfaces exposed to supersaturated carbon environments comprising constructing said surfaces of, or coating said surfaces with a copper based alloy. The invention is also directed to a composition resistant to metal dusting.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: May 18, 2004
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Trikur Anantharaman Ramanarayanan, Changmin Chun, James Dirickson Mumford
  • Patent number: 6613163
    Abstract: The invention relates to a method for producing band-shaped steel for components which are produced by drawing and ironing. The invention also relates to a steel band which can be drawn or ironed and which has been produced by the inventive method. The hot strip is cold-worked in one or more steps at a ratio of the cold roll of at least 86%. Furthermore, at least one side of the band material is provided with a galvanically produced coating containing Ni, Co, Cu, Fe, Sn, In, Pd, Bi and/or the alloys thereof or with a roll-bonded coating containing Cu and/or brass and/or the alloys thereof. The aim of the invention is to carry out the inventive method with the fewest processing steps possible and with low production costs. The method therefore comprises the steps: etching, cold rolling in one or two steps, annealing the coiled band (coil-annealing), optionally rerolling the band. The hot strip preferably contains boron with a percentile of 0.0013 and 0.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: September 2, 2003
    Assignee: Hille & Mueller GmbH
    Inventors: Karlfried Pfeifenbring, Andrew E. Munera, Ferdinand Schmidt, Rob Van Der Mije, Jaap Neeft, Uwe Schoelich
  • Patent number: 6544669
    Abstract: A method of making cookware and bakeware having a stick resistant and mar resistant cook surface comprising the steps of providing a cooking utensil having a cook surface, and cryogenically treating the cooking utensil at one or more selected temperatures comprising −100° F. to −300° F. or lower to harden said cook surface. The cooking utensil may have a bare metal cook surface, or it may be coated with a stick resistant coating such as one of a PTFE, metal nitride or sulfide coating or combinations thereof prior to the cryogenic hardening treatment.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: April 8, 2003
    Assignee: Clad Metals LLC
    Inventor: William A. Groll
  • Patent number: 6372062
    Abstract: A process for the production of a metal sheet having a multi-layered structure and a fine composite structure, which process comprises stacking at least two kinds of thin sheets selected from thin sheets of pure metals and thin sheets of alloys alternately so as to have multiple layers in total, integrating the stacked sheets by circumferential welding or placing the stacked sheets in a steel or stainless steel box to integrate these, and then, bonding all the layers of the integrated sheets metallically by hot rolling, and a metal sheet obtained thereby.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: April 16, 2002
    Assignee: Nippon Metal Industry Co., Ltd.
    Inventors: Sasaki Masahiro, Seiichi Takeda
  • Patent number: 6355364
    Abstract: Processes for preparing copper-INVAR-copper (CIC) for use in making chip packaging and the CIC created. One process comprises annealing a CIC section at a temperature in a range of 1475° F. to 1625° F. for a time in a range of 40 to 120 seconds. Another process includes heat treating a CIC section at a temperature in a range of 1275° F. to 1425° F. for a time in a range of 40 to 120 seconds. The above processes can be combined. The CIC section created exhibits unique electrical, physical, and mechanical properties.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: March 12, 2002
    Assignee: International Business Machines Corporation
    Inventors: Robert M. Japp, Lisa J. Jimarez, Bonnie S. McClure
  • Publication number: 20010055695
    Abstract: A lead-free plain bearing is formed by dispersing an alloy powder formed from 7-13 mass percent of Sn, 0.1-5 mass percent of Ag, and Cu on a backing, such as a steel plate, and sintering. The alloy powder may further include one or more of 0.05-0.5 mass percent of molybdenum disulfide powder and 0.1-2 mass percent of graphite powder. The bearing surface may be rough finished by machining to a roughness of 0.3-1 &mgr;m Ra and then fine finished by polishing to a roughness of at most 0.1 &mgr;Ra.
    Type: Application
    Filed: March 19, 2001
    Publication date: December 27, 2001
    Inventors: Issaku Sato, Naoki Sato
  • Patent number: 6312834
    Abstract: The present invention, which is aimed at providing a method for manufacturing a clad material that can be used for the anode cases and cathode cases of button-type microbatteries and other miniature electronic devices requiring the use of comparatively thin, drawable sheets, allows the difference between r values, or Lankford values (which characterize the plastic anisotropy between the rolling/bonding direction of a clad material and a direction at a prescribed angle to the rolling/bonding direction) to be reduced by preforming cold rolling at a reduction of 30% or lower in addition to performing a conventional method for manufacturing a clad material, making it possible to substantially enhance the mechanical strength of the clad material and to mass-produce clad materials that have low reduction anisotropy.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: November 6, 2001
    Assignee: Sumitomo Special Metals Co., Ltd.
    Inventors: Masaaki Ishio, Yoshiki Takai
  • Publication number: 20010025875
    Abstract: Disclosed are a solder and a solder paste used for soldering an electronic part to a circuit board. This solder comprises 2.0 to 3.5 wt % of Ag, 5 to 18 wt % of Bi and Sn for the rest. Alternatively, it further contains at least one element selected from the group consisting of 0.1 to 1.5 wt % of In, 0.1 to 0.7 wt % of Cu and 0.1 to 10 wt % of Zn.
    Type: Application
    Filed: May 16, 2001
    Publication date: October 4, 2001
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Atsushi Yamaguchi, Tetsuo Fukushima, Kenichiro Suetsugu, Akio Furusawa
  • Patent number: 6284389
    Abstract: Composite materials are composed of a primary metallic base material, such as a titanium metallic material, metallurgically bonded to one or more secondary materials having desirable thermal conductivity properties and having a coefficient of thermal expansion (“CTE”) that generally matches the CTE of the primary metallic material. An exemplary composite material is composed of a titanium primary material metallurgically bonded to a secondary metal matrix composite material having a high thermal conductivity, such as aluminum silicon carbide. Methods for manufacturing such composite materials are disclosed.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: September 4, 2001
    Assignee: Pacific Aerospace & Electronics, Inc.
    Inventors: Herman L. Jones, Edward A. Taylor
  • Patent number: 6273972
    Abstract: A composite multilayer material and a method for the production thereof are described which are suitable for bearing points subject to mixed friction, said material being corrosion-resistant and cold-formable and capable of withstanding extremely high loads. According to the method, the backing material is preheated to a temperature of 1000° C. to 1100° C., a heterogeneously developing, lead-free copper-zinc- or copper-aluminum-based bearing alloy at a temperature of from 1000° C. to 1250° C. is cast thereon, and the composite multilayer material is cooled from the casting temperature of the bearing alloy to 100° C. within 2 to 4 minutes. A metallurgical bond zone (2) is present between the bearing alloy (3) and the backing material (1), which metallurgical bond zone (2) comprises 80-95% iron and the usual impurities, the rest being copper, and is crystallised in cubic form.
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: August 14, 2001
    Assignee: Federal-Mogul Wiesbaden GmbH & Co.KG
    Inventor: Gerd Andler
  • Patent number: 6267830
    Abstract: A 5-ply composite metal product for the manufacture of cookware is provided which contains a relatively thick copper core having relatively thin layers of pure aluminum bonded between outer layers of stainless steel. The cooking vessels made therefrom may contain a decorative groove or skived ring around a perimeter of the vessel, formed by machining away the outer layers of stainless steel and pure aluminum to visually expose the copper core.
    Type: Grant
    Filed: May 4, 1999
    Date of Patent: July 31, 2001
    Assignee: Clad Metals LLC
    Inventor: William A. Groll
  • Patent number: 6106637
    Abstract: A ready-to-use metal wire comprising microalloyed steel with a structure almost entirely made up of a cold-hammered annealed martensite is disclosed. The wire diameter is of at least 0.10 mm and at most 0.50 mm, and the ultimate tensile strength of the wire is of at least 2800 MPa. The method of producing said wire comprises deforming a wire rod, performing a hardening heat treatment on the deformed wire and heating it to an annealing temperature to cause the formation of a structure almost entirely made up of annealed martensite. The wire is then cooled and deformed. Assemblies comprising at least one such wire, and wire or assemblies used in particular for reinforcing pneumatic tires, are also disclosed.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: August 22, 2000
    Assignee: Michelin & Cie
    Inventors: Jean-Claude Arnaud, Eric Depraetere, Marc Francois, Raoul Serre
  • Patent number: 6093267
    Abstract: The anchoring of the carcass reinforcing elements 1 is assured by circumferential cables 2, with the interposition of a connecting rubber composition 3. The circumferential cable 2 is arranged in several turns forming one or more helices. These circumferential cables have an operational elongation rate A.sub.f =A.sub.e +A.sub.p of more than 4%. This operational elongation rate does not include the specific elongation A.sub.s of the "cable" effect. The maximum stress R.sub.m of the cable 2 is preferably more than 2000 MPa. The cables have undergone a heat treatment which has, in combination, the features of being a recovery annealing treatment and which is carried out directly on cable comprising wires previously separately covered by an adherent coating.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: July 25, 2000
    Assignee: Sedepro
    Inventors: Jean-Claude Arnaud, Pedro Costa Pereira
  • Patent number: 5704993
    Abstract: Electrical conductors and methods of producing them, where the conductors possess both high strength and high conductivity. Conductors are comprised of carbon steel and a material chosen from a group consisting of copper, nickel, silver, and gold. Diffusion barriers are placed between these two materials. The components of a conductor are assembled and then the assembly is subjected to heat treating and mechanical deformation steps.
    Type: Grant
    Filed: November 30, 1995
    Date of Patent: January 6, 1998
    Assignee: The Regents of the Univerisity of California, Office of Technology Transfer
    Inventors: Ruoyi Zhou, James L. Smith, John David Embury
  • Patent number: 5582281
    Abstract: In a synchronizer ring that is a part of an automobile transmission, a ring body is made of an iron material and a sliding member is made of a wear-resistant copper alloy having the following chemical components, matrix and rigidity, characterized in that the ring body and sliding member are bonded to each other by way of hot working. (1) a wear-resistant copper alloy containing Zn of 22 to 45 wt %, at least one kind of metal elements of 0.1 to 15 wt % which are selected from a metal element group of Al, Mn, Fe, Pb, Ni, Be, Si, Co, Cr, Ti, Nb, V, Zr, Mo, Sn, Bi, B etc. and the remnant composed of Cu and impurities. (2) The wear-resistant copper alloy has a matrix of .alpha. phase+.beta. phase, .beta. phase alone or .beta. phase+.gamma. phase. (3) HRB (Hardness Rockwell B) value is more than 80.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: December 10, 1996
    Assignee: Chuetsu Metal Works Co., Ltd.
    Inventors: Kunio Nakashima, Masao Hosoda, Kunihiro Uraki, Wataru Yago, Atsushi Yasukawa
  • Patent number: 5437748
    Abstract: It is usually desirable to utilize brass coated steel wires in the reinforcement of rubber articles, such as tires. This invention relates to a process for simultaneously parenting and brass plating a steel wire which comprises:(a) continuously passing the steel wire through a molten mixture of copper and zinc to apply a brass coating thereto, wherein the molten mixture is maintained at a temperature which is within the range of about 930.degree. C. to about 1100.degree. C.
    Type: Grant
    Filed: September 15, 1994
    Date of Patent: August 1, 1995
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Anand W. Bhagwat, Eddie F. Riggenbach
  • Patent number: 5389163
    Abstract: A brass layer is formed on a steel wire, and an Ni layer is formed on the brass layer. Then, the steel wire is drawn through a die, and the brass layer and Ni layer are mixed into an alloy coating layer. In the coating layer, the closer to its surface the higher the Ni content. According to the method, a rubber-reinforcing steel wire can be produced which shows improved wet adhesive property to rubber, without degrading drawability.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: February 14, 1995
    Assignee: Tokyo Rope Mfg. Co., Ltd.
    Inventor: Shunji Hachisuka
  • Patent number: 5383985
    Abstract: An intermediate layer (3) constituted essentially by one or more of the following metals: Ni, Cu, Ti, and Al is interposed between the insert (2) and the part (1) to be clad, e.g. a vane for a steam turbine. After the part and insert assembly has been calibrated in an isothermal matrix, it is inserted in an isostatic pressing oven and raised to a temperature that is lower than the melting temperature of the layer (3) but higher than the forging temperature of the part. This method makes it possible to retain the metallurgical properties of the part.
    Type: Grant
    Filed: June 4, 1993
    Date of Patent: January 24, 1995
    Assignee: GEC Alsthom Electromecanique SA
    Inventor: Andre Coulon
  • Patent number: 5366569
    Abstract: The object of the invention is a corrosion-resistant composite wire with diameters <10 mm, which has a concentric, homogeneous high-grade steel coating, wherein this coating, depending on the diameter of the wire and the application, can vary 15-30% by volume, and its strength can vary, depending on the core wire used and the degree of forming, up to .ltoreq.2000 N/mm.sup.2. To produce such a composite wire, for example, a high-strength, patented and surface-pretreated steel wire is sheathed with a strip of high-grade steel. In the first forming step, the longitudinally welded high-grade steel sheath is pressed tightly onto the core wire and in subsequent drawing steps, the composite wire is drawn to the final dimensions. At least between two forming steps, there is a selective annealing treatment of the composite wire by means of a rotary arc, whereby only the high-grade steel layer is heated to the annealing temperature.
    Type: Grant
    Filed: March 30, 1993
    Date of Patent: November 22, 1994
    Assignee: SKET Schwermaschinenbau Magdeburg GmbH
    Inventors: Volker Muller, Manfred Fehn, Hans Sommer, Hans-Jurgen Grunwald, Ulf Holtge
  • Patent number: 5338380
    Abstract: High strength low carbon steel wire rods excellent in the cold drawing property have a composite structure in which an acicular low temperature transformation phase comprising a martensite, bainite and/or the mixed structure thereof that comprises, by weight %,C: 0.02-0.30%,Si: less than 2-5%,Mn: less than 2.5% andthe balance of iron and inevitable impurities and that may partially contain retained austenite is uniformly dispersed at the volume ratio of from 10 to 70% in the ferrite phase, and in which the weight of (C+N) in solution the ferrite phase is less than 40 ppm.
    Type: Grant
    Filed: May 27, 1992
    Date of Patent: August 16, 1994
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Toshiaki Yutori, Masaaki Katsumata, Takehiko Kato, Yasuhiro Hosogi
  • Patent number: 5240520
    Abstract: A high-strength, ultra-fine wire having an excellent workability in stranding, comprising a steel comprised of, in terms of % by weight, 0.85 to 1.10% of C, 0.10 to 0.70% of Si, 0.20 to 0.60% of Mn, 0.10 to 0.60% of Cr, 0.005% or less of Al and optionally at least one member selected from 0.10 to 2.00% of Ni and 0.10 to 3.00% of Co with the balance Fe and unavoidable impurities and, provided thereon, a brass plating, the steel wire having a diameter of 0.1 to 0.4 mm and a tensile strength of 400 kgf/mm.sup.2 or more, the surface of the brass plating being provided with indentations having a depth of 2 .mu.m or less at intervals of 50 .mu.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: August 31, 1993
    Assignee: Nippon Steel Corporation
    Inventors: Toshimi Tarui, Syoji Sasaki, Hitoshi Tashiro, Hiroshi Sato
  • Patent number: 5230756
    Abstract: In forming a weld bead of pure copper on a ferroalloy base material by laying a powder of copper and melting the powder by a high density energy source such as laser beams, TIG arc or electron beams, the powder of copper is beforehand mixed with a powder of an auxiliary metal having a higher melting point than pure copper. In order to ensure the substantial purity in copper of the weld bead, the powder mixture should not include more than 16 wt % nickel.
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: July 27, 1993
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Minoru Kawasaki, Soya Takagi, Shinji Kato, Kazuhiko Mori, Yasuo Kotetsu