Patents Examined by Daniel J. Jenkins
  • Patent number: 7147725
    Abstract: A welding flux that includes a flux agent, water glass and colloidal compound formed from small particles of silicon dioxide. The welding flux has a very low hygroscopicity, thus is well suited from low hydrogen electrodes.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: December 12, 2006
    Assignee: Lincoln Global, Inc.
    Inventors: Craig B. Dallam, Nikhil Karogal
  • Patent number: 7056470
    Abstract: A capacitor-grade wire made from powder metallurgy containing at least niobium and silicon, wherein the niobium is the highest weight percent metal present in the niobium wire. The wire having a controlled tensile strength at finish diameter exceeds the strength of capacitor-grade wire formed by ingot metallurgy. Also, the powder metallurgy wire hardness exceeds capacitor-grade wire formed from ingot metallurgy with electrical leakage meeting the specifications normally applied to capacitor grade tantalum, niobium or niobium-zirconium lead wire at sinter temperatures of about 1150° C. and above.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: June 6, 2006
    Assignee: H. C. Starck Inc.
    Inventors: Richard Malen, Prabhat Kumar
  • Patent number: 6923934
    Abstract: TiAl alloy includes 46 to 50 at % of Al, 5 at % or less of combination of Mo, V and Si, provided that Si content is 0.7 at % or less, and Mo content satisfies an equation of ?0.3x +17.5 at % or less where x represents Al (at %), and the remainder being Ti and inevitable impurities. Mo may be replaced by Fe or combination of Mo and Fe. TiAl alloy is heated to a melt, poured into a mold, and cooled at a rate of 150 to 250° C./min within a temperature range of 1500 to 1100° C. The resulting product can be used as cast. If desired, however, heat treatment such as HIP or homogenization may be performed within a temperature range of 1100 to 800° C. After the heat treatment, the melt is cooled at a rate of 100° C./min or more until room temperature.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: August 2, 2005
    Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.
    Inventor: Sadao Nishikiori
  • Patent number: 6923877
    Abstract: A method and apparatus for improving the properties of a material of a workpiece by laser shock peening in which an overlay which is opaque to a laser beam, and an overlay which is translucent to said laser beam, are applied to a surface of a workpiece. The translucent overlay being applied on top of and over the opaque overlay. A laser beam is then directed at the said surface to which the overlays have been applied to vaporize the opaque overlay and laser shock peen the surface of the workpiece to produce a region of compressive residual stress in said surface. The overlays and the laser beam being applied concurrently, in a single operation, as the surface of the workpiece is traversed so that as each point on the surface to be treated is traversed the opaque overlay, translucent overlay, and laser shock peening are applied sequentially to that point. The opaque overlay is preferably an ink layer which is applied by printing on the surface.
    Type: Grant
    Filed: August 17, 1999
    Date of Patent: August 2, 2005
    Assignee: Rolls-Royce plc
    Inventor: Raymond I Anderson
  • Patent number: 6899845
    Abstract: A formed body prepared by compacting tungsten powders is embedded in a powder mixture capable of performing combustion synthesis, a part of the powder mixture is powerfully heated to ignite the part and perform combustion synthesis, by the heat of formation released, a temperature of a formed body is instantaneously elevated to induce a sintering reaction, and a high temperature state is retained to convert a whole of the formed body into sintered tungsten.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: May 31, 2005
    Assignee: National Institute for Materials Science
    Inventor: Yoshinari Kaieda
  • Patent number: 6896845
    Abstract: W powders and C powders are mixed at a ratio of 1:1, the raw material mixed powder is compacted to prepare a formed body, the formed body is embedded into a powder mixture capable of performing combustion synthesis, a part of the powder mixture is powerfully heated to ignite the part and perform combustion synthesis, and according to heat of formation released, a reaction represented by W+C?WC is induced and the reaction is subjected to combustion synthesis to convert a whole of the formed body into sintered WC.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: May 24, 2005
    Assignee: National Institute for Materials Science
    Inventor: Yoshinari Kaieda
  • Patent number: 6830632
    Abstract: A wire preform suitable for use in brazing components to one another. The preform is made from a length of wire having a core of flux material, and a longitudinal seam or gap that extends over the length of the wire. The seam is formed so that when heated, the flux material flows from the core and out of the seam. The length of wire is in the form of a loop having a certain circumference so that when the preform is heated, the flux material disperses uniformly from the circumference of the preform for evenly treating the surface of a component on which the preform is placed. The length of wire may include a silver alloy.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: December 14, 2004
    Assignee: Lucas Milhaupt, Inc.
    Inventors: Charles E. Fuerstenau, Alan Belohlav
  • Patent number: 6808678
    Abstract: Disclosed is the provision of a non-aging, highly anti-seed and anti-black-speck steel plate for enameling without relying upon decarbonization-denitrification annealing involving increased production cost, and without the addition of expensive elements, such as niobium and titanium involving increased alloying cost. This steel plate is produced by adopting a steel composition comprising, by weight, carbon: not more than 0.0018%, silicon: not more than 0.020%, manganese: 0.10 to 0.30%, phosphorus: 0.010 to 0.030%, sulfur: not more than 0.030%, aluminum: not more than 0.005%, nitrogen: 0.0008 to 0.0050%, boron: not more than 0.0050% and not less than 0.6 time the nitrogen content, and oxygen: 0.010 to 0.05%, and regulating the chemical composition of the steel and regulating mainly hot rolling conditions to regulate the form of nitrides.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: October 26, 2004
    Assignee: Nippon Steel Corporation
    Inventors: Hidekuni Murakami, Satoshi Nishimura, Kazuhisa Kusumi, Shiroh Sanagi
  • Patent number: 6802885
    Abstract: The present invention relates to improved metallurgical powder compositions that incorporate solid lubricants, methods for preparing and using the same, and methods of making compacted parts. Ejection properties, such as stripping pressure and sliding pressure, of compacted parts can be improved by using the solid lubricants. The solid lubricants contain functionalized polyalkylene lubricants have the formula: R1—Q—R2 where Q is a linear or branched, polyalkylene containing from about 10 to about 200 carbon atoms, and R1 and R2 are each independently a hydroxyl group, a carboxylic acid group or a metal salt thereof, an amine group, a mono- or di-C1 to C25 alkyl substituted amine group, or an alkylene oxide group having the formula: —[(CH2)qO]nH where q is from about 1 to about 7, n is from about 1 to about 100.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: October 12, 2004
    Assignee: Hoeganaes Corporation
    Inventors: Sydney Luk, George Poszmik
  • Patent number: 6767505
    Abstract: A gas operated part forming die apparatus has compact high tonnage presses which are operated by high pressure gas generated within chambers and controlled to operate high pressure pistons and dies for compressing particulate material into dense formed parts. Combustion chambers are filled with pressurized mixtures of combustible gases and diluents. Elongated chambers have insulating walls and spaced electrodes. Some contain liquid or particulate ablatable materials or ablatable liners. Others extend fuzes between the electrodes and are filled with pressurized gases. Gas is removed from the particulate material. Die cavities may be precompressed during filing of chambers with pressurized gas. Igniting the combustible gases or creating arcs between the electrodes produces rapidly expanding high pressure resultant gases for driving pistons and movable dies and rapidly compressing die cavities. Pressures in the chambers are contained, or pistons are restrained until releasing and driving the pistons.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: July 27, 2004
    Assignee: Utron Inc.
    Inventors: F. Douglas Witherspoon, Dennis W. Massey, T. Arul Mozhi, David L. Kruczynski, John M. Ryan
  • Patent number: 6764643
    Abstract: A powder compaction method in which a powder p is filled by air tapping or other suitable method into a mold 1, then while the mold 1 being filled with the powder, the powder particles are bound with each other without application of force from outside the mold to form a compact C, and then the compact C is taken out from the mold 1. This method produces a variety of shapes of the compact far greater than in conventional methods, and net shape manufacturing of products with complex shapes is made possible by this method. Because this method uses far less binder compared to MIM and PIM that are expected as methods for producing products with complicated shapes, the time needed for elimination of the binder is much shorter than in MIM and PIM.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: July 20, 2004
    Inventors: Masato Sagawa, Tochihiro Watanabe, Hiroshi Nagata
  • Patent number: 6759004
    Abstract: A metal injection-molding feedstock is heated and plasticized. Supercritical carbon dioxide is injected into the feedstock to form micropores when the pressure is reduced and a parts mold is filled. The micropores are retained when the green parts are debindered and sintered.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: July 6, 2004
    Assignee: Southco, Inc.
    Inventor: Ratnesh K. Dwivedi
  • Patent number: 6740289
    Abstract: An atomized mixture of flat soft magnetic powder and an organic binding agent is rolled by mutually confronting two rolling rolls so as to easily produce a composite magnetic sheet excellent in electromagnetic wave absorption characteristic. A plurality of the composite magnetic sheets are stacked by forming unevenness on joining surfaces thereof and rolled so as to realize a desired thickness. By sandwiching a mesh metal layer between the foregoing two composite magnetic sheets and joining them by applying rolling thereto, a mechanically strong electromagnetic interference suppressing sheet can be easily obtained. For reducing reflection and transmittance of electromagnetic waves of the composite magnetic sheet, embossing is applied to obverse and reverse surfaces thereof.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: May 25, 2004
    Assignee: NEC Tokin Corporation
    Inventors: Norihiko Ono, Shigeyoshi Yoshida, Osamu Ito, Mitsuharu Sato
  • Patent number: 6723279
    Abstract: Golf club structures, including club heads and shafts, composed of composites comprised of a matrix of metal, such as an aluminum alloy, or a plastic material and a fiber such as graphite or a ceramic, which may be whiskerized, and which may also be selectively weighted as in the toe and heel of a club head, with heavy particles such as tungsten metal. The club structure may also be surface hardened by applying a coating of fullerenes to a metal club structure and heat treating it to produce a hard coating of metal carbide, preferably by coating a titanium golf club structure with fullerenes and heat treating the coated structure to produce a titanium carbide surface.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: April 20, 2004
    Assignee: Materials and Electrochemical Research (MER) Corporation
    Inventors: James C. Withers, Raouf O. Loutfy, Sion M. Pickard, Kenneth J. Newell, William B. Kelly
  • Patent number: 6723278
    Abstract: This invention presents the process of direct laser casting of copper alloys: Cu—X (where X=Ni, Fe, W;) and their composites Cu—Y and Cu—X—Y (Y=WC, TiC, Ti+C) from powders prepared using mechanical mixing and ball milling processes. Since the metallic powder is combined with a low melting point Cu metal, which has good thermal and electrical conductivity, the combination allows the powder mixture to be melted by CO2 laser and re-solidified into a part with good mechanical properties and conductivity. The laser casting process for the Cu-based in-situ formation and the material systems formed using the said method have been developed. The process can be used to fabricate complex three-dimensional objects by multi-layer overlapping and the material systems can be used to build rapid tooling due to the properties of good thermal conductivity and low wear rate.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: April 20, 2004
    Assignees: The National University of Singapore, The Singapore Institute of Manufacturing Technology
    Inventors: Li Lu, Jerry Ying Fuh, Yoke San Wong, Zhenda Chen, Gnian Cher Lim
  • Patent number: 6716388
    Abstract: A rotary chip-removing tool includes a rotary tool body and a tool tip fastened on a front end thereof. The tool tip is formed of an injection molded body which has an integral cutting edge at its front end, and a coupling structure at its rear end. The coupling structure can be in the form of a threaded hole, or a rearward projection, for coupling the tool tip against the tool body. The tool tip is formed of first and second materials. The first material forms at least part of the cutting edge, and the second material forms the coupling structure. The first material is more brittle than the second material, and the second material is tougher than the first material.
    Type: Grant
    Filed: February 4, 2003
    Date of Patent: April 6, 2004
    Assignee: Seco Tools AB
    Inventors: Johnny Bruhn, Mattias Puide, Mikael Gronkvist
  • Patent number: 6706238
    Abstract: The present invention relates to a substrate for a magnetic recording medium that ensures a floating height on a magnetic head. This substrate is made of a sintered body provided with pores having a diameter in the range of 0.05 &mgr;m to 2.0 &mgr;m extending across 5% to 50% of the surface area of the substrate.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: March 16, 2004
    Assignee: Fujitsu Limited
    Inventors: Shinichi Takahashi, Koki Kanda
  • Patent number: 6706239
    Abstract: A method of co-forming a metal article comprising forming a powdered metal component from a first powdered metal composition, providing a polymeric foam, coating the polymeric foam with a second powdered metal composition to form a coated polymeric foam, placing the coated polymeric foam in contact with the powdered metal component to form a composite, and heat-treating the composite to volatilize the polymeric foam and to solidify the powdered metal component. The powdered metal composition of the powdered metal component can be the same or different than the powdered metal composition used to coat the polymeric foam. The resulting co-formed metal article can be in a variety of configurations including, but not limited to, metal foam on the inside or outside surfaces of a metal tube and metal foam on one or more faces of a metal plate.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: March 16, 2004
    Assignee: Porvair PLC
    Inventors: David P. Haack, Chi-Li Lin, Michael Speckert
  • Patent number: 6702869
    Abstract: A niobium powder is described which when formed into an electrolytic capacitor anode, the anode has the capacitance of at least 62,000 CV/g. Methods of making flaked niobium powder which have high capacitance capability when formed into electrolytic capacitor anodes is also described. Besides niobium, the present invention is also applicable to other metals, including valve metals.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: March 9, 2004
    Assignee: Cabot Corporation
    Inventors: Kurt A. Habecker, James A. Fife
  • Patent number: 6699431
    Abstract: A method of producing an anode for a capacitor, which includes the steps of molding a continuously deformable material onto a flat anode conductor and simultaneously externally shaping the material, and solidifying the material to form an anode body.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: March 2, 2004
    Assignee: Epcos AG
    Inventors: Helge Clasen, Willy Knabe, Klaus Gnann, Josef Gerblinger, Dieter Hahn