Patents Examined by Robert L. McDowell
  • Patent number: 4876159
    Abstract: Inhomogeneous mixed magnetooptical films having unique properties are prepared by evaporating a rare earth metal and a transition metal and sequentially depositing the rare earth and transition metals on a substrate at a maximum repeat distance of 21 angstroms.
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: October 24, 1989
    Assignee: Eastman Kodak Company
    Inventor: Sung-Chul Shin
  • Patent number: 4874440
    Abstract: Superplastic forming of aluminum work stock is improved by including therein about 0.05% to about 10% or 15% scandium. In preferred practices, soluble elements such as magnesium are also included in the aluminum alloy. One or more of the elements from the group of scandium, yttrium, gadolinium, holminum, dysprosium, erbium, ytterbium, lutetium, and terbium, may be included in addition to or in lieu of scandium.
    Type: Grant
    Filed: August 14, 1987
    Date of Patent: October 17, 1989
    Assignee: Aluminum Company of America
    Inventors: Ralph R. Sawtell, Philip E. Bretz, Craig L. Jensen
  • Patent number: 4869757
    Abstract: A unique hardenable silver alloy is provided which is solution annealed and preferably age-hardened to yield a silver alloy of exceptional and reversible hardness. The alloys utilize intermetallic systems comprising; silver, copper, combined with lithium alone or tin alone in varying percent amounts, or silver, copper, lithium and either tin or antimony, or silver, copper, lithium, tin and antimony, or silver, copper, lithium, tin and bismuth, or silver, copper, lithium, tin, bismuth and antimony.
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: September 26, 1989
    Assignee: Leach & Garner Company
    Inventors: Thomas W. Eagar, Dwarika P. Agarwal, Laura L. Bourguignon, Rosaire Marcotte
  • Patent number: 4865297
    Abstract: This invention relates to a lance/burner apparatus and a method for melting and refining metals. Combustion produced from an oxy-fuel or fuel-air-oxygen flame is used to preheat and melt scrap. Oxygen is introduced through a lance pipe into the molten scrap to refine the metal.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: September 12, 1989
    Inventor: Grigory M. Gitman
  • Patent number: 4840356
    Abstract: A device for introducing gas into a mass of molten metal in a vessel for creating a stirring action therein by way of an apertured block in the refractory lining of said vessel. The device communicates with an opening in the vessel, the opening being sized to permit the introduction and/or exchange of a device core upwardly into the apertured block from the outside bottom or wall of the vessel. The core has a plurality of passageways therethrough and preferably incorporates a conical sleeve thereabout and an apertured spacer therebelow through which a gas supply extends. A removable closure for the opening in the outside bottom or wall of the vessel normally supports the replaceable stirring device when the vessel is in use.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: June 20, 1989
    Inventor: Michael D. Labate
  • Patent number: 4839241
    Abstract: A composite zinc-silica electro-galvanized steel sheet excellent in corrosion resistance, having on at least one surface thereof a zinciferous plating layer, preferably in an amount of from 5 to 100 g/m.sup.2 per side thereof, into which silica particles are dispersed. The above-mentioned plating layer consists essentially of:silica particles: from 0.1 to 20 wt. %,nitrogen compounds: from 0.0005 to 0.5 wt. % as converted into nitrogen,and the balance being zinc and incidental impurities.The above-mentioned plating layer further additionally contains as required at least one element selected from the group consisting of:iron: from 2 to 80 wt. %,nickel: from 2 to 25 wt. %,cobalt: from 0.1 to 5 wt. %, andchromium: from 0.5 to 20 wt. %.The total amount of the above-mentioned at least one element thus additionally contained is limited to up to 80 wt. %.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: June 13, 1989
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Masaki Abe, Yukimitsu Shiohara, Takeshi Adaniya, Hiroshi Naemura
  • Patent number: 4828631
    Abstract: A method is provided for producing a high strength aluminum alloy characterized by improved resistance to exfoliation. The method comprises providing an aluminum-base alloy comprising 5.9 to 8.2 wt. % zinc, 1.5 to 4.0 wt. % magnesium, 1.5 to 3.0 wt. % copper, less than 0.01 wt. % boron not more than 0.04 wt. % chromium, and 0.5 wt. % maximum other alloying elements such as zirconium, manganese, iron, silicon and titanium, with the balance consisting of aluminum, working the alloy into a product of predetermined shape, solution heat treating the shaped product, quenching, and aging the heat treated and quenched product to a temperature of from above 270.degree. F. for a period of from 6 to 30 hours.
    Type: Grant
    Filed: August 13, 1987
    Date of Patent: May 9, 1989
    Assignee: Aluminum Company of America
    Inventors: Basil M. Ponchel, James D. Walsh
  • Patent number: 4824080
    Abstract: An apparatus for introducing gas into a molten metal bath contained within a refractory-lined vessel by the distribution of gas bubbles in the metal bath. The distribution is disbursed and covers a wide areas and mixing within the bath is improved. This is accomplished with the use of a tuyere having a plurality of passageways which cause gas passing through the tuyere to exit into the bath as a series of gas jets which exit from the tuyere at an angle to its longitudinal axis. Preferably, the passageways in the tuyere are spiral so as to produce a swirling or vortical gas motion within the bath.
    Type: Grant
    Filed: February 4, 1988
    Date of Patent: April 25, 1989
    Assignee: Allegheny Ludlum Corporation
    Inventor: Joseph W. Tommaney
  • Patent number: 4824079
    Abstract: An injection valve which is positioned on the underneath portion of a teeming vessel is disclosed. The valve itself includes a mounting plate, and a well block nozzle which is in open communication with the metal being teemed in the vessel. Beneath the sliding injection plate a sliding plate carrier is positioned which is engaged by spring loaded rocker arms in order to maintain a compressive relationship between the sliding plate carrier, the sliding injection gate, and the stationary plate. Optionally the injection valve is fed by a plurality of injectants supplied which are adjusted by means of a control valve. In addition, wire may also be injected simultaneously with gas, or other additives. In addition, power means are provided for replacing the sliding plate carrier, and also the sliding plate. Alternatively means are provided for disengaging the rockers, and manually replacing the same.
    Type: Grant
    Filed: July 15, 1986
    Date of Patent: April 25, 1989
    Assignee: Flo-Con Systems, Inc.
    Inventor: Patrick D. King
  • Patent number: 4822561
    Abstract: An aluminum bearing alloy to which is added 3-20% by weight of tin, 0.2-2% of copper and either 0.2-1.2% of manganese or 0.1-1% of zirconium. Additionally 0.1-5% of lead and/or 1.5-8% of silicon may be added.
    Type: Grant
    Filed: October 8, 1987
    Date of Patent: April 18, 1989
    Assignee: Taiho Kogyo Co., Ltd.
    Inventors: Soji Kamiya, Yuji Yokota, Tatsuhiko Fukuoka, Yoshio Kumada
  • Patent number: 4820487
    Abstract: This invention comprises a gold alloy comprising the following ingredients substantially in the following range by weight:______________________________________ (1) gold 80 to 88% (2) nickel 3 to 6% (3) chromium 2 to 3% (4) molybdenum 0.1 to 0.4% (5) vanadium 1 to 3% (6) carbon 0.1 to 1.5% (7) tungsten 0.1 to 1.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: April 11, 1989
    Inventor: Vittorio Antoniazzi
  • Patent number: 4818487
    Abstract: An aluminum bearing alloy to which is added 3-20% by weight of tin, 0.2-2% of copper and either 0.2-1.2% of manganese or 0.1-1% of zirconium. Additionally 0.1-5% of lead and/or 1.5-8% of silicon may be added.
    Type: Grant
    Filed: October 8, 1987
    Date of Patent: April 4, 1989
    Assignee: Taiho Kogyo Co., Ltd.
    Inventors: Soji Kamiya, Yuji Yokota, Tatsuhiko Fukuoka, Yoshio Kumada
  • Patent number: 4816088
    Abstract: The invention relates to a method for the deformational transformation of aluminum and its alloys comprising the steps of deforming the aluminum in the solid state and annealing the deformed aluminum at a temperature at which recrystallization occurs. The recrystallization temperature of the aluminum is raised and the grain size is minimized by adding to the aluminim 5 to 1000 ppm uranium prior to the deformation. The method is particularly applicable to the production of aluminum based sheets intended to be subjected to heating at a relatively high temperature, for example the heating which accompanies enamelling or brazing operations, where the heating operation could change the mechanical properties of the sheets.
    Type: Grant
    Filed: November 23, 1987
    Date of Patent: March 28, 1989
    Assignee: Cegedur Societe de Transformation de L'Aliminium Pechiney
    Inventors: Francois-Regis Boutin, Guy-Michel Raynaud
  • Patent number: 4815715
    Abstract: An assembly for use in supplying a gas through a metallurgical vessel into molten metal contained therein includes a refractory supporting block to be mounted within a wall or a bottom of the metallurgical vessel. The supporting block has an inner end directed toward the molten metal and an outer end directed outwardly of the metallurgical vessel. A plurality of receiving chambers extend into the supporting block from the inner end thereof, and each of a plurality of purging bricks is fitted within a respective receiving chamber. A connecting plate is mounted on the outer end of the supporting block for connection to a source of purging gas. A plurality of channels extend through the supporting block from the connecting plate to respective of the receiving chambers and purging bricks.
    Type: Grant
    Filed: October 9, 1987
    Date of Patent: March 28, 1989
    Assignee: Didier-Werke AG
    Inventors: Dietmar Ganson, Heinz Schutz, Mel Zetz
  • Patent number: 4812183
    Abstract: Disclosed is a method of making an improved aluminum alloy coated sheet stock useful for fabricating into easy-open ends for beverage containers. The method comprises the steps of providing a body of an aluminum base alloy consisting essentially of, by weight, 4.0 to 5.5% Mg, 0.2 to 0.7% Mn, 0.05 to 0.40% Cu, the balance being aluminum, incidental elements and impurities and rolling the body to produce an aluminum sheet stock. The sheet stock is subjected to a structure refining operation to precipitate finally divided magnesium containing constituent and thereafter the sheet stock is coated with an organic coating material and cured at a temperature sufficiently low and for a period of time to avoid dissolving the precipitated constituent to provide coated sheet stock having improved levels of tensile strength and high levels of formability.
    Type: Grant
    Filed: December 30, 1985
    Date of Patent: March 14, 1989
    Assignee: Aluminum Company of America
    Inventors: Robert E. Sanders, Jr., Henry W. Kaanta, John K. McBride, Milton W. Milner, Terry A. Perigo, Samuel L. Shelby
  • Patent number: 4812372
    Abstract: A refractory metal substrate suitable for use in contact with an oxygen- or nitrogen-containing environment at a temperature greater than the oxidation or mitridation acceleration temperature of the substrate is disclosed. The refractory metal substrate comprises a refractory metal comprised of molybdenum and having a coating comprised of chromium metal. In an alternative embodiment the refractory metal can be an alloy comprised of in weight percent: from about 10 to about 20 chromium, from about 0 to about 5 alumina (Al.sub.2 O.sub.3), from about 0 to about 1 yttria (Y.sub.2 O.sub.3), from about 0 to about 0.5 titanium, from about 0 to about 0.1 zirconium, the balance being essentially molybdenum to make 100% of the composition; and, optionally having a coating of chromium metal.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: March 14, 1989
    Assignee: Owens-Corning Fiberglas Corporation
    Inventor: Subhash S. Kithany
  • Patent number: 4812371
    Abstract: A Zn-Al hot-dip galvanized coating on a steel sheet may exhibit intergranular corrosion and be degraded due to the Al's secular enrichment in the grain boundaries of coating. This is prevented in accordance with the present invention by the galvanizing bath composition which contains from 0.15 to 10% of Al, from 0.1 to 1% of Sb, from 0.01 to 2% of Si, and the balance being Zn and unavoidable impurities such as Pb, Sn, and Cd in an amount less than 0.02%, and additionally contains at least from 0.01 to 1% of at least one member selected from the group consisting of Mg and mischmetal.
    Type: Grant
    Filed: August 4, 1987
    Date of Patent: March 14, 1989
    Assignee: Nippon Steel Corporation
    Inventors: Yoshio Shindou, Motoo Kabeya
  • Patent number: 4810308
    Abstract: A unique hardenable silver alloy is provided which is solution annealed and preferably age-hardened to yield a silver alloy of exceptional and reversible hardness. The alloys utilize intermetallic systems comprising silver, copper, combined with lithium alone or tin alone in varying percent amounts, or silver, copper, lithium and either tin or antimony, or silver, copper, lithium and either aluminum or indium or zinc, or silver, copper, antiomony and either aluminum or indium or zinc, or silver, copper, lithium, tin and antimony, or silver, copper, lithium, tin and bismuth, or silver, copper, lithium, tin, bismuth and antimony.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: March 7, 1989
    Assignee: Leach & Garner Company
    Inventors: Thomas W. Eagar, Dwarika P. Agarwal, Laura L. Bourguignon, Rosaire Marcotte
  • Patent number: 4810465
    Abstract: A free-cutting Ti alloy is disclosed. The basic alloy composition of this free-cutting Ti alloy essentially consists of at least one of S: 0.001-10%, Se: 0.001-10% and Te: 0.001-10%; REM: 0.01-10%; and one or both of Ca: 0.001-10% and B: 0.005-5%; and the balance substantially Ti. The Ti alloy includes one or more of Ti-S (Se, Te) compounds, Ca-S (Se, Te) compounds, REM-S (Se, Te) compounds and their complex compounds as inclusions to improve machinability. Some optional elements can be added to above basic composition.Also disclosed are methods of producing the above free-cutting Ti alloy and a specific Ti alloy which is a particularly suitable material for connecting rods.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: March 7, 1989
    Assignee: Daido Tokushuko Kabushiki Kaisha
    Inventors: Atsuyoshi Kimura, Sadayuki Nakamura
  • Patent number: 4810591
    Abstract: In construction of a composite type metal gasket having a hard metal substrate, use of Cu, Cu-base alloy, Al or Al-base alloys for covering layers well enhances sealing effect and consolidates substrate-covering bonding.
    Type: Grant
    Filed: October 7, 1986
    Date of Patent: March 7, 1989
    Assignees: Hamamatsu Gasket Seisakusho Limited, Nippon Gakki Seizo Kabushiki Kaisha
    Inventor: Yakichi Sakai