Encasing A Rodlike Core Within A Substantially Coextensive Tube By Complete Bonding Therebetween Patents (Class 228/126)
  • Patent number: 10433824
    Abstract: A tubular body for a medical device for insertion within a body passageway of a patient. The tubular body includes a tubular inner liner. A braided member is disposed along an outer surface of the liner. The braided member includes intersecting filaments and cells defined by the filaments. A securement mechanism, such as radiopaque solder, is disposed along a circumferential region of the braided member. The securement mechanism is attached to portions of the filaments and spans the cells that correspond to the circumferential region to inhibit relative movement of filament ends. An outer surface of the securement mechanism is sized to extend radially outward to a position up to an outer surface of the braided member to not add to the overall wall thickness of the tubular body. An outer jacket is positioned longitudinally around the braided member and connected to the inner liner.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: October 8, 2019
    Assignee: COOK MEDICAL TECHNOLOGIES LLC
    Inventors: Mahendran Ravichandran, Kurt J. Tekulve, Michael D. Deckard, Michelle Reynolds
  • Patent number: 10202692
    Abstract: A copper-clad aluminum composite wire that can reduce an amount of copper to be used. A structure of the copper-clad aluminum composite wire includes: a wire made of an aluminum material, where a surface of the wire made of an aluminum material is sequentially provided with an intermediate metal layer and a copper layer; and assuming that a thickness of the copper layer is t1, a density of the copper layer is ?1, a thickness of the intermediate metal layer is t2, a density of the intermediate metal layer is ?2, a radius of the wire made of an aluminum material is R, and a density of the wire made of an aluminum material is ?3, t 1 = ( R + t 2 ) 2 + K 1 × ( t 2 2 + 2 ? ? t 2 × R ) ? ? ? 2 + K 1 × R 2 ? ? 3 ( 1 - K 1 ) × ? 1 - R - t 2 , where 0.02?K1?0.12. The copper-clad aluminum composite wire can be widely applied to the communication industry.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: February 12, 2019
    Assignee: JIANGSU GREENSHINE WIRE & CABLE CO., LTD.
    Inventors: Guofeng Xie, Xiaowen Xie
  • Publication number: 20140378314
    Abstract: Reinforced high temperature superconducting silver wire and materials, and methods of producing reinforced high temperature superconducting silver composite wire. More specifically reinforcement materials and assemblies for attaining much higher stress, bend and surface indent tolerances at practical conductor dimensions are described. The reinforced wire or methods can include a silver wire core and a layer of high strength reinforcing metal.
    Type: Application
    Filed: June 19, 2014
    Publication date: December 25, 2014
    Inventor: Alexander Otto
  • Patent number: 8853540
    Abstract: A conductor for a communications cable includes an elongated metal wire and a metal sheet that includes a plurality of carbon nanotubes that at least partially surrounds the elongated metal wire. The metal wire may include copper, and the metal sheet may likewise include copper and may be welded to an outside surface of the metal wire to surround the metal wire. This conductor may be used in a variety of communications cables that carry high frequency signals.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: October 7, 2014
    Assignee: CommScope, Inc. of North Carolina
    Inventor: Luc Walter Adriaenssens
  • Patent number: 8663813
    Abstract: A seamless composite metal tube comprises an inner layer (1) consisting of copper or a copper alloy, an outer layer (5) consisting of aluminium or an aluminium alloy, and at least three different intermediate intermetallic layers (2, 3, 4) each consisting of copper and aluminium, wherein the concentration of copper decreases from the inner layer (1) to the outer layer (5) in the radial direction of the tube.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: March 4, 2014
    Assignee: Halcor Metal Works S.A.
    Inventors: John Biris, George Hinopoulos, Apostolos Kaimenopoulos
  • Publication number: 20130256388
    Abstract: A method for forming a solid oxide fuel cell brazed to a current collector includes heating the solid oxide fuel cell, the current collector, and a primary brazing slurry above a brazing temperature and subsequently cooling the solid oxide fuel cell, the current collector and the primary brazing slurry below the brazing temperature. The method further includes heating the solid oxide fuel cell, the current collector and the secondary brazing slurry above the brazing temperature and subsequently cooling the solid oxide fuel cell primarily brazed to the current collector and the secondary brazing slurry below the brazing temperature.
    Type: Application
    Filed: June 30, 2009
    Publication date: October 3, 2013
    Applicant: ADAPTIVE MATERIALS, INC.
    Inventors: Shawou Zha, Timothy LaBreche
  • Publication number: 20130123536
    Abstract: Tube-bundle equipment for heat exchange operations at high pressures and temperatures, under conditions of high aggressiveness of the process fluids, comprising a titanium lining (11) and a series of tubes (1) consisting of at least one layer of zirconium (2), positioned in contact with said fluids, wherein the tube plate on which said tubes are inserted comprises an outer layer (S) of zirconium or an alloy thereof and an underlying layer (5) of titanium welded to the lining of the equipment. Said equipment is particularly used as a heat exchanger, for example as a stripper, in the high-pressure cycle of urea syntheses processes.
    Type: Application
    Filed: July 13, 2009
    Publication date: May 16, 2013
    Applicant: SAIPEM S.p.A.
    Inventors: Domenico Sanfilippo, Luca Mairano, Alessandro Gianazza, Lino Carlessi
  • Patent number: 7791425
    Abstract: The present invention relates to a two-level mounting board in which a second substrate is supported horizontally by a metal pin above a first substrate having a mounting electrode on an outer base surface, the free, lower end of the metal pin is inserted in a hole provided in the surface of the first substrate, and the metal pin is affixed by solder to an annular electrode land provided on the surface of the first substrate to form an outer periphery of the hole, wherein part of the ring of the annular electrode land is cut away to open the same. This provides a two-level mounting board in which metal pins can be connected reliably to the first substrate to support the second substrate horizontally, and a crystal oscillator using the same.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: September 7, 2010
    Assignee: Nihon Dempa Kogyo Co., Ltd.
    Inventors: Takeshi Uchida, Manabu Ito, Tomotaka Kuroda
  • Patent number: 7543733
    Abstract: The invention relates to a method of protecting equipment intended to operate at high temperature in the presence of a fluid containing at least one hydrocarbon and/or carbon monoxide against corrosion by metal dusting, method in which pieces of the equipment are made from an alloy containing nickel, iron, chromium and/or aluminum, and in which said pieces of the equipment are protected from said corrosion by a protective coating. This method is characterized in that said equipment pieces protected in this way are connected to each other by means of joining pieces, said joining pieces being protected beforehand by a protective coating over at least part of their surface intended to be brought into contact with said fluid at high temperature, and in that each of the connections intended to be subjected to said corrosion is produced by external welding of the ends of the joining piece with said pieces of equipment.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: June 9, 2009
    Assignee: L'Air Liquide, Societe Anonyme A Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Sophie Wastiaux, Michel Poteau
  • Patent number: 7473490
    Abstract: The present invention relates to a channeled metal clad fiber comprising one or more surface channels that extend along directions that are substantially parallel to the longitudinal axis of such fiber. The present invention also provides a microfibrous fuel cell structure that comprises a hollow microfibrous membrane separator having an electrolyte medium therein and defining a bore side and a shell side. An inner current collector, which is formed of a channeled metal clad fiber or a channeled metal fiber that is unclad, and an inner electrocatalyst layer are positioned at the bore side of such microfibrous fuel cell, and an outer current collector and an outer electrocatalyst layer are positioned at the shell side of such microfibrous fuel cell. The surface channels on such inner current collector provide inner fluid passages for passing a fuel-containing or an oxidant-containing fluid through the microfibrous fuel cell.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: January 6, 2009
    Assignee: Microcell Corporation
    Inventor: Ray R. Eshraghi
  • Publication number: 20080143168
    Abstract: The present invention provides a rotary cutting bit for use in road milling, mining and/or excavating applications that includes a split wear ring which is harder than the steel cutting bit body. The cutting bit has a cutting tip made of hard material such as tungsten carbide brazed into a nose portion of the steel tool body. The split wear ring is positioned in an annular channel in the tool body near the steel nose of the tool body. In one embodiment, the split wear ring is positioned so that the inner diameter of the split wear ring is smaller than the outer diameter of the cutting tip. Such a configuration allows the split wear ring to be tucked under the outer diameter of the cutting tip, decreasing tool body wear that could otherwise occur, thus providing longer tool life and reduced operating costs. The split wear ring pieces may be retained in place by a retainer such as banding rings, epoxies, tape or wire.
    Type: Application
    Filed: December 15, 2006
    Publication date: June 19, 2008
    Applicant: Kennametal Inc.
    Inventors: Scott Glenn Ferreri, Wayne H. Beach
  • Patent number: 6955286
    Abstract: A compound arrangement comprising a first component of metal being brazed to a second component of metal. The first component has an external cylindrical surface touching an cylindrical internal surface of the second component. The second component clasps the first component tightly, so that the second component exerts compressive stress on said external surface of the first component.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: October 18, 2005
    Assignee: Endress + Hauser Flowtec AG
    Inventor: Rainer Lorenz
  • Patent number: 6805281
    Abstract: A method of forming a meltable material at a joint between telescopingly engaged male and female elements, with the female element having a joint surface that surrounds a joint surface of the male element. The method includes the steps of: placing a ring of the meltable material around one of the male and female elements at a first location spaced from the joint; heating the male and female elements at the joint to a temperature at which the meltable material melts; sliding the ring of meltable material from the first location to a second location; with the ring of meltable material at the second location and the male and female elements of the joint at a temperature at which the meltable material melts, causing the meltable material to flow between the male and female joint surfaces; and cooling the male and female elements at the joint to solidify the meltable material between the male and female joint surfaces.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: October 19, 2004
    Inventor: Joseph Sirgedas
  • Patent number: 6698644
    Abstract: A single-tube Coriolis mass flow sensor includes a stainless steel sleeve having an unplated interior surface and a titanium member having a cylindrical end inserted into the stainless steel sleeve. The exterior surface of the titanium cylindrical end forms a joint with the unplated interior surface of the stainless steel sleeve. The titanium cylindrical end is brazed to the unplated interior surface of the stainless steel sleeve at the joint, and the stainless steel sleeve exerts compressive stress on the titanium cylindrical end at the joint.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: March 2, 2004
    Assignee: Endress + Hauser Flowtec AG
    Inventor: Rainer Lorenz
  • Publication number: 20030141346
    Abstract: The invention relates to a method for welding a bolt (19) onto a workpiece, using a bolt-welding device and to a bolt-welding device. A force is applied to the drive shaft (11) using a switchable unit (29), said force exerting a resistance against a displacement of the drive shaft (11). The drive shaft (11) is moved by an electromagnetic linear drive (5) acting in an axial direction. The unit (29) can prevent the movement of the drive shaft (11) and can fix the latter in position, in such a way that the linear drive (5) can be switched to a currentless state. In addition, the unit can dampen the movement of the drive shaft (11).
    Type: Application
    Filed: November 5, 2002
    Publication date: July 31, 2003
    Inventors: Jurgen Madsak, Ulrich Citrich, Steffen Hailer
  • Publication number: 20030141347
    Abstract: The invention relates to a method for positioning a welding bolt (15), held in a bolt welding head (3), whereby the robot (5), to which the bolt welding head (3) is fixed, moves the bolt welding head sideways until a touch sensor (21) contacts a side wall (25) of a workpiece. The position of the side wall (25) is thus detected and the bolt welding head (3) can be moved through a set amount (Y) into a welding start position, from whence the welding bolt (15) can be welded to the workpiece (9) by the displacement in the direction of travel (V). The welding bolt (15), thus, always has the required separation (Z) from the side wall (25), independent of tolerances in the workpiece.
    Type: Application
    Filed: November 5, 2002
    Publication date: July 31, 2003
    Inventors: Ulrich Citrich, Steffen Hailer, Jurgen Madsak
  • Patent number: 6534194
    Abstract: In accordance with the invention a reactive multilayer foil is fabricated by providing an assembly (stack or multilayer) of reactive layers, inserting the assembly into a jacket, deforming the jacketed assembly to reduce its cross sectional area, flattening the jacketed assembly into a sheet, and then removing the jacket. Advantageously, the assembly is wound into a cylinder before insertion into the jacket, and the jacketed assembly is cooled to a temperature below 100° C. during deforming. The resulting multilayer foil is advantageous as a freestanding reactive foil for use in bonding, ignition or propulsion.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: March 18, 2003
    Assignee: Johns Hopkins University
    Inventors: Timothy P. Weihs, Michael Reiss
  • Patent number: 6478213
    Abstract: A multi-tubular structure is fabricated without the use of a brazing flux by assembling a brazing assembly having no flux and having an inner tube, a bottom outer tube overlying the inner tube, and a top outer tube overlying the inner tube. The top outer tube and the bottom outer tube are coaxial along a tube axis but longitudinally spaced apart along the tube axis. A mass of a braze material overlies the inner tube and resides within the flared upper end of the bottom outer tube. The assembly is brazed in a vacuum by heating the braze material to a temperature above the braze-material melting point, and simultaneously moving the top outer tube and the bottom outer tube together along the tube axis so that their facing ends lie adjacent to each other.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: November 12, 2002
    Assignee: Raytheon Company
    Inventor: Scott Higgins
  • Patent number: 6474534
    Abstract: A method of hydroforming a tubular structure of varying diameter along its longitudinal axis, comprising the formation of a tubular blank member by welding together, at their periphery, tubes of different diameters using electromagnetic pulse welding.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: November 5, 2002
    Assignee: Magna International Inc.
    Inventors: Gianfranco Gabbianelli, Seetarama S. Kotagiri, Richard Ashley
  • Publication number: 20020092891
    Abstract: A method for manufacturing a multiple walled tube comprising a rolling of a plated metal strip through at least two complete revolutions to form a tube having at least a double wall which has a plated layer on the inside of the tube, said rolling being followed by a heating of the tube to cause the surface of the tube walls, which are in contact with one another, to be brazed and wherein said metal strip is plated on one side, the other side being formed by the steel of the metal strip and wherein said brazing is realised by brazing directly the plated side on the steel.
    Type: Application
    Filed: August 7, 2001
    Publication date: July 18, 2002
    Applicant: TI Group Automotive Systems Ltd.
    Inventors: Lamande Pascal, Pierini Vincenzo, Volvert Albert
  • Patent number: 6352196
    Abstract: Surprisingly, silver-copper-palladium brazing alloys, which have hitherto been used only for the brazing of components of the same material, are also very well suited for brazing directly titanium to stainless steel if, the latter component clasps the titanium component tightly, so that the cold joint is under constant compressive stress. In a method for forming the titanium-steel compound the titanium component is provided with a cylindrical end which has a smaller outside diameter than an adjacent main portion whose external surface is a first surface to be brazed. The cylindrical steel component is a sleeve whose inside diameter is equal to the outside diameter of the main portion and whose internal surface is a second surface to be brazed. A silver-copper-palladium brazing alloy is placed around the end of the titanium component. The steel sleeve is slipped thereover.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: March 5, 2002
    Assignee: Endress + Hauser Flowtec AG
    Inventor: Rainer Lorenz
  • Patent number: 6329079
    Abstract: A tube for a cracker unit in which ethylene is produced withstands, without oxidizing or losing its strength, the elevated temperatures required to effect cracking, yet retards coking. The tube has a shell formed from stainless steel or high nickel alloy and a liner formed from an iron-aluminum alloy. The liner retards the deposit of carbon and its build up known as coking. To form the tube, a high alloy ingot is bored to provide a bore that extends through its center. Then a weld overlay is applied to surface of the bore, with the overlay being derived from a weld metal containing at least 16% aluminum and the balance essentially iron. Thereafter, the ingot is heated to its hot working temperature and extruded through sets of opposed rollers, with the direction of advance being in the direction of the bore. The extruding transforms the ingot into a lined tube.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: December 11, 2001
    Assignee: Nooter Corporation
    Inventor: John J. Meyer
  • Patent number: 6325278
    Abstract: Concentric, tubular sections are assembled by first securing annular centralizers and insulation about the external surface of the smaller diameter tube while the tube is horizontally disposed. The larger tube is then vertically aligned and lowered into a recessed area formed below the assembly area work level. A lifting cable, secured at one end to a lifting device, is extended through the smaller diameter tube and attached to a hoisting arrangement that vertically orients the tube concentrically over the larger diameter tube. Spring-loaded legs on the lifting device are manually retracted radially to permit the smaller tube to be lowered concentrically through the larger tube. The inner tube is lowered until the legs spring radially outwardly to engage the base of the larger tube. The entire assembly may then be lifted as a unit by the hoist with the lifting device, establishing the axial positions of the two tubes relative to each other.
    Type: Grant
    Filed: January 12, 2000
    Date of Patent: December 4, 2001
    Assignee: Grant Prideco, L.P.
    Inventors: Layton R. Bull, Douglas J. Trosclair, Terron A. Adams, Roy J. Blanchard
  • Patent number: 6316122
    Abstract: A metal fiber of titanium or titanium alloy has given equivalent area diameter and specific surface area and is produced by a bundle drawing method wherein mild steel is used as a material for covering layer and outer housing and a composite wire is subjected to a heat treatment at a given temperature.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: November 13, 2001
    Assignee: Bridgestone Metalpha Corporation
    Inventor: Shuji Amamoto
  • Publication number: 20010019074
    Abstract: A method of welding a hollow member and an insert member to form a composite member including a hollow member and insertion member requiring a high dimensional accuracy in the end-to-end distance in the axial direction and requiring a reliable concentricity in the center axes of the hollow member and insertion member, including preparing a hollow member and insertion member, inserting the insertion member in the hollow member, providing spot welds at an overlap portion where the hollow member and insertion member overlap to correct the axial end-to-end distance of the hollow member and the insertion member, and providing a partial weld at an overlap portion where the hollow member and insertion member overlap to correct the concentricity of the hollow member and the insertion member.
    Type: Application
    Filed: March 5, 2001
    Publication date: September 6, 2001
    Inventors: Hideaki Shirai, Takafumi Sato, Eiji Iwanari, Yoshinori Ohmi
  • Patent number: 6189768
    Abstract: A process and apparatus that would hydraulically compress the external sleeve onto the inner APH tube, without deforming the inner surface of the APH tube during the process. The system would include a heating tube of the type having a continuous wall portion and a bore therethrough; a sleeve positionable around the heating tube, the diameter of the sleeve slightly larger than the diameter of the heating tube; a contracting assembly securably atop the end portions of the heating tube and the surrounding sleeve; an insert positionable within the bore of the tube, for defining a protective member along a portion of the inner wall of the tube; a contour ring moveable along the outer surface of the sleeve for compressing the sleeve wall against the tube wall to define a sealable gap between a portion of the sleeve and a portion of the tube.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: February 20, 2001
    Assignee: Columbian Chemicals Company
    Inventors: Janek Porowski, David Lewis, Wallace Murray, Marvin Skiff
  • Patent number: 6112971
    Abstract: A brazing process is provided that addresses the braze joint failure problems encountered in some multi-nozzle combustion end covers. The brazing process embodying the invention provides optimal, predictable low cycle fatigue joint life in particular when brazing 304L stainless steel parts using Amdry 915 braze alloy. The invention was realized in particular in the combination of and application of tightly controlled vital variables of gap, braze alloy, braze peak temperature hold time, cooling (quench) rate, surface finish and braze media to optimal limits for the process parameters. The process provides robust/reliable design limits for braze joints experiencing stress during operation.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: September 5, 2000
    Assignee: General Electric Co.
    Inventors: Dean Henry Castaldo, Bernard Arthur Couture, Anne Elizabeth Kolman, David Robert Schumacher
  • Patent number: 6065664
    Abstract: The disclosure is for a method of installing a heat pipe within another structure. A completely processed heat pipe is coated with solder and inserted into a cylindrical hole within the structure with sliding clearance. The casing of the heat pipe is then expanded into tight contact with the surrounding hole by heating the heat pipe and expanding the heat pipe casing with the heat pipe's own internal vapor pressure. The application of heat also simultaneously melts the solder to bond the heat pipe into the hole.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: May 23, 2000
    Assignee: Thermal Corp.
    Inventors: Scott D. Garner, Douglas W. Grove
  • Patent number: 6045025
    Abstract: A pair of soldering irons are fixed to a sliding plate at a predetermined interval. The soldering irons are integrally moved so as to reciprocate in a rectangular direction relative to a conveyor belt. One of the soldering irons is conveyed to a working position of the conveyor belt and the other of them is separated from the conveyor belt. While one of the soldering irons solders a circuit board, the other is cleaned. The circuit board has a slit into which a metal plate is inserted and soldered. For the slit, a soldering land constituted of a main-land and a sub-land is provided. The main-land is formed along one of longer sides of the slit. The sub-land is elongated from the main-land along a shorter side of the slit. The soldering land is not formed all around the slit so that the slit is not closed by solder when the circuit board is dip-soldered.
    Type: Grant
    Filed: January 28, 1998
    Date of Patent: April 4, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masayoshi Muramatsu, Kenichi Watanabe
  • Patent number: 6013190
    Abstract: A catheter with at least one integrated lumen and methods of its manufacture and use are provided. A method of manufacture includes: (1) covering a primary mandrel with a first layer, (2) disposing a second layer on the first layer, wherein the second layer has at least one removable secondary mandrel substantially embedded therein, (3) fusing the first layer to the second layer, (4) removing the secondary mandrel from the second layer to form a secondary lumen, and (5) removing the primary mandrel from the first layer to form a primary lumen. The method may further include forming an inflatable balloon at the surface of the second layer where the secondary lumen forms an opening. Also, auxiliary apparatus, such as snare instruments and bundles of optical fibers, may be inserted through the secondary lumen before or during use of the catheter.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: January 11, 2000
    Assignee: Vascular Science Inc.
    Inventors: Todd Allen Berg, Paul J. Hindrichs, Christopher Michael Prigge
  • Patent number: 5988484
    Abstract: A method of manufacturing clad tubular product from a hollow carbon steel billet having an inner diameter and a hollow corrosion resistant alloy billet having an outer diameter, comprising the steps of: machining the inner diameter of the hollow carbon billet and the outer diameter of the hollow corrosion resistant alloy billet to result in an interference fit between the two billets at room temperature when the corrosion resistant billow is placed inside the carbon billet; heating the hollow carbon billet in a furnace until the carbon billet reaches a temperature in the range of approximately 400.degree. F. to about 850.degree. F.; inserting the corrosion resistant billet inside of the hollow carbon billet while the carbon billet is at a temperature in the range of approximately 400.degree. F. to about 850.degree. F.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: November 23, 1999
    Inventors: Donald Osborn, Josef Worringer
  • Patent number: 5932348
    Abstract: A method of making an improved composite containing substantially non-segregating solid reinforcing elements therein is disclosed. New composites and non-segregating solid reinforcing elements for these composites are also disclosed.
    Type: Grant
    Filed: February 25, 1997
    Date of Patent: August 3, 1999
    Inventor: Chou H. Li
  • Patent number: 5689875
    Abstract: Large amounts of stabilizing copper may be added to a superconducting core using an economical cladding process. One or more cladding strips of copper are bonded directly to the core without the use of a bonding agent. The copper cladding is fused to the core at a late stage in the fabrication of the superconductor by the simultaneous application of heat and pressure using conventional rolling apparatus. Multiple cladding layers may be sequentially applied to further increase the volume of copper present in the superconductor.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: November 25, 1997
    Assignee: IGC Advanced Superconductors
    Inventor: Hem C. Kanithi
  • Patent number: 5485948
    Abstract: A shaft for such items as sporting goods, including golf clubs fishing rods bicycle frames, and ski poles is constructed of metallic tubular structures. The hollow tubular shaft is brazed to a helical coil of reinforcing wire which fits snugly against the inside surface of the shaft. Brazing is accomplished by fitting the helical reinforcing wire into the tubular shaft and placing the assembly inside a controlled atmosphere or vacuum furnace where heat is applied to initiate the brazing function. By using appropriate metals and alloys the brazing and hardening is accomplished simultaneously without the use of flux. The proper choice of metals and the gauge of the metals ensures the desired strength, rigidity, and torsional characteristics of the shaft.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: January 23, 1996
    Inventor: Edward J. McCrink
  • Patent number: 5093209
    Abstract: A compound steel workpiece and a process for its production, wherein a support jacket is provided with at least one recess, which in turn is furnished with a lining resistant to attrition and corrosion, which lining is connected to the support jacket by a metal bond. In the process, which has particular application in the production of double or multiple screw cylinders for use in plastics processing, the support jacket is provided with at least one core at the point(s) at which the recess(es) are desired, is subjected to hot-forming, along with the core(s), at an appropriate temperature, in particular for cross-sectional reduction a cross-sectional shape deviating from that of a circle is imparted to the core(s) and the recess(es) are created in the core(s).
    Type: Grant
    Filed: June 20, 1989
    Date of Patent: March 3, 1992
    Assignee: Boehler Gesellschaft m.b.H.
    Inventor: Walter Kroisenbrunner
  • Patent number: 5055361
    Abstract: A new and improved bonded ceramic-metal article and the method of making the article is described. The ceramic-metal article comprises a ceramic article, such as a lanthana-strengthened yttria article, bonded to a metal article, such as niobium, by a layer of a brazing material to form a bonded ceramic-metal article. The method of bonding the ceramic article to the metal article comprises placing the brazing alloy, such as a brazing alloy consisting essentially of 63% by weight silver, 35.25% by weight copper, and 1.75% by weight titanium, between the lanthana-strengthened yttria article and the niobium article and heating the layered structure in vacuum at about 50 degrees centigrade above the liquidus temperature of the brazing alloy for a period of about 5 minutes.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: October 8, 1991
    Assignee: GTE Laboratories Incorporated
    Inventors: Edmund M. Dunn, Kang, Shinhoo, George C. Wei
  • Patent number: 5005755
    Abstract: An elongated flexible tube that constitutes an insert part of an endoscope. The flexible tube comprises: a spiral tube made of a precipitation hardening metal and having a groove which is recessed inwardly from the outer surface of the tube, the groove extending in a straight line along the axis of the tube, the spiral tube being subjected to age hardening process after a solid solution treatment; a braided-wire tube formed by weaving fine metal wires into a braid, the braided-wire tube being closely fitted over the outer surface of the spiral tube; and a flexible skin closely and watertightly fitted over the outer surface of the braided-wire tube.
    Type: Grant
    Filed: August 8, 1990
    Date of Patent: April 9, 1991
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Nagashige Takahashi, Teruo Ouchi
  • Patent number: 5004143
    Abstract: The present invention relates to a method of manufacturing a clad bar and is basically characterized in that a columnar core member is fitted in a cylindrical outside layer member and the resulting assembly is heated, and then the heated assembly is rolled by a rotary mill provided with three or more cone type rolls to integrate the core member and the outside layer member by diffusion bending. The method is additionally characterized in that, in order to prevent unnecessary substances, such as oxides, from being formed on an interface between the core member and the outside layer member, the assembly is sealed at both ends thereof under reduced pressure or under vacuum or the assembly is cold drawn, the assembly thus welded or cold drawn is then heated and subsequently rolled by a rotary mill. Thus, an intermetallic compound layer formed between the core member and the outside layer member can be thinned, whereby improving bond strength.
    Type: Grant
    Filed: July 28, 1987
    Date of Patent: April 2, 1991
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Kazuyuki Nakasuji, Chihiro Hayashi
  • Patent number: 4923108
    Abstract: The strengthening and stiffening of long, curved or tapered tubes is achieved by using internal strengtheners. The strengthening element conforms to the internal shape of the tube as it is inserted into the tube. The parts of the strengthening element which are then in contact with the inside of the tube have pre-formed welding material attached to them; a solid connection between the strengthener and the tube is achieved by selective heating, welding or by blowing adhesive material through the tube.If a tube has the non-welded strengthener in place, the forming or bending of the tube may proceed, since the strengthener takes the form of the tube at any stage of forming. The process is especially suitable for tubes with different cross-sections along their length.
    Type: Grant
    Filed: November 8, 1988
    Date of Patent: May 8, 1990
    Inventor: Steve Cordell
  • Patent number: 4886203
    Abstract: A method of brazing of an outer carbon steel shell to an inner stainless steel shell, in which a stainless steel sheet material of the inner shell is rolled up with an overlap and arranged with a clearance inside the outer shell, braze material is placed in the clearance, walls of the rolled sheet material of the inner shell are forced to the inner surface of the outer shell, longitudinal edges of the sheet material of the inner shell are weld-joined to form the inner shell, air is evacuated from the clearance, and ends of the outer and inner shells are joined by circular vacuum-tight corner welds, one leg of which extends radially and has a length equal to at least one thickness of the inner shell, whereas the length of the other leg, which extends longitudinally, is equal to at least twice the thickness of the wall of the inner shell and said inner and outer shells are brazed in a furnace forming after cooling a bimetallic cylindrical article.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: December 12, 1989
    Inventors: Leonid G. Puzrin, Miron G. Atroshenko, Vladimir L. Yaremenko, Jury Y. Ischenko, Pavel S. Nefedov, Ivan G. Pescherin, Ilya P. Serebryanik, Evgeny I. Polev
  • Patent number: 4620662
    Abstract: A process for brazing a sleeve within a tube which is resistant to longitudinal expansion is disclosed herein. In the first step of the process, a thermally induced radial expansion is induced in the tube in a first longitudinal section of the tube which does not include the ring of brazing alloy which circumscribes the sleeve. In the second step of the process, a brazing heat is applied across the longitudinal section of the tube which does include this ring of brazing material. The residual tensile stress created by the thermally induced radial expansion in the tube avoids the creation of gaps in the braze joint between the sleeve and the inner walls of the tube. This process is particularly useful in creating high-quality braze joints in sleeving operations in nuclear steam generators, where the heat exchange tubes which need to be sleeved may be partially or completely prevented from expanding in the longitudinal direction due to sludge deposits in the generator.
    Type: Grant
    Filed: July 25, 1984
    Date of Patent: November 4, 1986
    Assignee: Westinghouse Electric Corp.
    Inventor: John M. Driggers
  • Patent number: 4594218
    Abstract: The present invention concerns superconductor lengths constituted by superconducting filaments based on a ternary chalcogenide of molybdenum (PbMo.sub.6 S.sub.8) assembled within a stabilizing matrix based on copper. The invention provides a method of fabricating superconducting filaments consisting of mixing a powder of a ternary chalcogenide of molybdenum with a metal powder of smaller granulometry and chosen from the components of the chalcogenide in question, or from the group of metals consisting of aluminum, silver, gallium, rhenium, and titanium, in sheathing the mixture of powders obtained by means of a metal wall constituted from one of a group of metals formed by molybdenum, niobium, tantalum, titanium and vanadium, and in subjecting the superconducting lengths obtained after drawing and cold working using conventional wire drawing techniques to a final heat treatment consisting of heating to a temperature of about 800.degree. C. for at least twenty hours.
    Type: Grant
    Filed: June 6, 1985
    Date of Patent: June 10, 1986
    Assignee: Alsthom-Atlantique, S.A.
    Inventors: Patrick Dubots, Jean-Claude Renard
  • Patent number: 4584169
    Abstract: In the installation, a strip is shaped from a split tube which is welded or seamed to give a closed tube in a welding or seaming station. Associated with the welding or seaming station is a suction mechanism used for the removal of on the one hand the cold air flow produced by the moving open tube and on the other the air flow heated during welding and flowing back from the closed tube, as a result of the reduction of the internal cross-section thereof. This obviates air turbulence in the welding or seaming station, which could whirl up the pulverulent material introduced into the open tube in a dosing station and could be deposited on the longitudinal edges of the split tube. This could unfavorably influence the seaming or welding process.
    Type: Grant
    Filed: April 17, 1985
    Date of Patent: April 22, 1986
    Assignee: Schweissindustrie Oerlikon Buhrle AG
    Inventors: Alexander Werner, Heinz Pfenninger
  • Patent number: 4569604
    Abstract: A printing head apparatus for impact dot printing and a method for manufacturing the apparatus, wherein those portions of the armature, printing wire and collar which are to be held in contact with each other and those other portions thereof which are to be set adjacent to each other are all bonded together by a brazing material in such a manner that one end of the printing wire is fitted to one end of the armature, and the collar penetrated by the printing wire is held in contact with said one end of the armature.
    Type: Grant
    Filed: December 21, 1983
    Date of Patent: February 11, 1986
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Yukio Adachi, Hiroshi Honma, Satoshi Ohkouchi
  • Patent number: 4376227
    Abstract: A device for pressure sealing a reactor or thermowell extending therein comprising a disc having individual tubes welded thereto and sheathed thermocouples passing through such tubes and brazed thereto.
    Type: Grant
    Filed: May 21, 1981
    Date of Patent: March 8, 1983
    Inventor: W. Dwight Hilborn
  • Patent number: 4260095
    Abstract: A clad product having predetermined closely-toleranced shape and dimensions. The product is made by first preforming a base material and a cladding of dissimilar material in dimensions substantially the same as the clad product, with at least the base or cladding being preformed with an additional dimensional profile. At least the cladding material is then heated to a solid-phase bonding temperature, achieved in one embodiment by laser-heating. The base material and cladding material are subsequently passed together through pressure rollers with application of a pressure for solid-phase bonding the cladding material against the base material to form the clad product. The bonding pressure of the rollers deforms the preformed additional dimensional profile to compensate for non-uniform material flow in the respective base or cladding material during solid-phase bonding for obtaining the predetermined closely-toleranced shape and dimensions of the clad product.
    Type: Grant
    Filed: August 18, 1978
    Date of Patent: April 7, 1981
    Inventor: Phillip H. Smith
  • Patent number: 4249291
    Abstract: A method for forming a liquid cooled airfoil for a gas turbine is disclosed. A plurality of holes are formed at spaced locations in an oversized airfoil blank. A pre-formed composite liquid coolant tube is bonded into each of the holes. The composite tube includes an inner member formed of an anti-corrosive material and an outer member formed of a material exhibiting a high degree of thermal conductivity. After the coolant tubes have been bonded to the airfoil blank, the airfoil blank is machined to a desired shape, such that a portion of the outer member of each of the composite tubes is contiguous with the outer surface of the machined airfoil blank. Finally, an external skin is bonded to the exposed outer surface of both the machined airfoil blank and the composite tubes.
    Type: Grant
    Filed: June 1, 1979
    Date of Patent: February 10, 1981
    Assignee: General Electric Company
    Inventors: Clayton M. Grondahl, Leo C. Willmott, Myron C. Muth
  • Patent number: 4130233
    Abstract: A method of making porous metal heat sinks from aluminum is described. The sink, in its simplist form, is composed of layers of aluminum wire mesh randomly stacked and brazed together to form a rigid porous metal panel. Devices to be heated (or cooled) are mounted on the panel and forced air passed through the panel creating abundant heat transfer due to large surface area and favorable thermal conductivity of aluminum. Tortuous air passages through the wire mesh create conditions favorable for turbulence which further facilitates heat transfer. Advance in the state-of-the-art is the novel manufacturing method of making a low cost heat sink whose thermal performance is only slightly less than that of higher cost copper wire sinks. A secondary application of the invention is for the formation of metallic filtration material designed for filtering under controlled temperature conditions.
    Type: Grant
    Filed: May 23, 1977
    Date of Patent: December 19, 1978
    Inventor: John Chisholm
  • Patent number: 4053971
    Abstract: A wrapping machine for use in constructing layered vessels having at least one layer formed of adjoining vessel sections wherein the wrapping machine has an interlooped band mechanism for positioning adjoining vessel sections adjacent one another and a tightening mechanism in operative engagement with the band mechanism for tightening the band mechanism about adjoining vessel sections with the interlooped band mechanism providing concentric loading of the layered vessel when the tightening mechanism draws the vessel sections together.
    Type: Grant
    Filed: August 9, 1976
    Date of Patent: October 18, 1977
    Assignee: Hahn & Clay
    Inventor: Raymond E. Pechacek
  • Patent number: 4026583
    Abstract: An oil well pipe incorporates a corrosion-resistant, metallic liner which is intimately metallurgically bonded to the pipe bore.
    Type: Grant
    Filed: April 28, 1975
    Date of Patent: May 31, 1977
    Assignee: Hydril Company
    Inventor: Theodore Gottlieb