Patents Examined by E. L. Weise
  • Patent number: 4061495
    Abstract: This invention relates to platinum group metal-containing alloys comprising, apart from impurities:A. at least 40 wt.% nickel or at least 40 wt.% cobalt;B. a trace to 30 wt.% chromium; andC. a trace to 15 wt.% of one or more of the metals platinum, palladium, rhodium, iridium, osmium and ruthenium.
    Type: Grant
    Filed: July 7, 1975
    Date of Patent: December 6, 1977
    Assignee: Johnson, Matthey & Co., Limited
    Inventors: Gordon Leslie Selman, Richard John Midgley
  • Patent number: 4056874
    Abstract: An improved process is provided for the formation of carbon fiber reinforced magnesium composite articles wherein substantially pure magnesium or magnesium alloys serve as the continuous matrix phase. A minor quantity of dispersed solid magnesium nitride sufficient to enhance the wettability of the carbon fiber reinforcement is provided in the molten magnesium containing metal when it is contacted with the carbon fiber reinforcement. The usual difficulties encountered when the production of such a composite article is attempted resulting from the inherent poor wettability of the carbon fibers by molten magnesium containing metal effectively are eliminated. The resulting composite article exhibits improved properties resulting from a more complete infiltration of the carbon fibers by the molten magnesium containing metal prior to solidification, and better adhesion between the fiber and metal.
    Type: Grant
    Filed: May 13, 1976
    Date of Patent: November 8, 1977
    Assignee: Celanese Corporation
    Inventor: Ilmar L. Kalnin
  • Patent number: 4049434
    Abstract: This invention relates to brazing alloys suitable for use in the fabrication of cutting tools, for example, the brazing of a cutting tip to a shank of a rock drill.One particular brazing alloy in accordance with the invention comprises, apart from impurities, 15-40 wt.% zinc, 15-45 wt.% silver, 0.2-15 wt.% manganese, 0.2-10 wt.% nickel and balance copper.
    Type: Grant
    Filed: October 5, 1976
    Date of Patent: September 20, 1977
    Assignee: Johnson, Matthey & Co., Limited
    Inventors: Mieczyslaw Herman Sloboda, John Sidney Hatswell
  • Patent number: 4046561
    Abstract: The present invention provides a precious metal alloy consisting essentially of palladium, from 1-3% of boron, and up to 3% of molybdenum. In its preferred form the boron content is approximately 1.3%, the molybdenum content is approximately 2%, and the alloy has a melting point of approximately F. To reduce the melting point of this alloy to approximately F. for low-fusing porcelain application, nickel or gallium is added in an amount of slightly less than 5%.
    Type: Grant
    Filed: September 1, 1976
    Date of Patent: September 6, 1977
    Assignee: Neoloy Products, Inc.
    Inventor: Emil M. Prosen
  • Patent number: 4043840
    Abstract: Aluminum alloys exhibiting improved resistance weldability are prepared which comprise 2.0-6.0% magnesium, up to 0.40% iron, up to 0.40% silicon, and from 0.03-0.20% vanadium, balance essentially aluminum. The alloys of the present invention are particularly suited for automotive metal working applications.
    Type: Grant
    Filed: July 9, 1976
    Date of Patent: August 23, 1977
    Assignee: Swiss Aluminium Ltd.
    Inventors: Philip R. Sperry, William C. Setzer, Lloyd E. Damon
  • Patent number: 4043809
    Abstract: This invention comprises a superconductive compound having the formula:Ni.sub.1-x M.sub.x Z.sub.ywherein M is a metal which will destroy the magnetic character of nickel (preferably copper, silver or gold); Z is hydrogen or deuterium; x is 0.1 to 0.9; and y, correspondingly, 0.9 to 0.1, and method of conducting electric current with no resistance at relatively high temperature of T> K comprising a conductor consisting essentially of the superconducting compound noted above.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: August 23, 1977
    Inventor: John J. Ruvalds
  • Patent number: 4042753
    Abstract: A composite electrical conductor wherein a sheath of titanium, zirconium or tantalum or an alloy thereof, encasing a metallic core element, e.g. copper and aluminum and bonded thereto and having a coating of "tinning" metal or alloy thereon.
    Type: Grant
    Filed: September 16, 1976
    Date of Patent: August 16, 1977
    Assignee: Imperial Chemical Industries Limited
    Inventor: Frank Smith
  • Patent number: 4042752
    Abstract: A novel product means of a corrosion resistant nature, and having a plastic substrate, and presenting a shiny or lustrous, or satin-like outer appearance.
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: August 16, 1977
    Assignee: M.C.P. Industries, Inc.
    Inventor: Jacob M. Hage
  • Patent number: 4039329
    Abstract: A dental powder composite adapted to be combined with mercury to form dental amalgam is disclosed which comprises amalgamatable silver-tin alloy in powder form and unalloyed indium powder. Amalgamation of this composite may be achieved with less mercury than used with prior composites and results in an amalgam having improved mechanical properties.
    Type: Grant
    Filed: June 13, 1975
    Date of Patent: August 2, 1977
    Inventor: William V. Youdelis
  • Patent number: 4039318
    Abstract: A metaliferous flame spray material is provided for producing adherent metal coatings on metal substrates, such as ferrous metal substrates, e.g. steel, cast iron and other metal substrates, said material comprising a plurality of ingredients physically combined in intimate contact with each other, each of said plurality of ingredients comprising by weight about 3% to 15% aluminum, about 2% to 15% of a refractory metal silicide and the balance essentially a metal selected from the group consisting of nickel-base, cobalt-base, iron-base and copper-base metals.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: August 2, 1977
    Assignee: Eutectic Corporation
    Inventor: Mahesh S. Patel
  • Patent number: 4039317
    Abstract: A process is disclosed for preparing silver powders with a controlled apparent density wherein an aqueous silver oxide suspension is treated with hydrogen at a temperature between and and under a partial hydrogen pressure of between 5 and 25 atmospheres. The aqueous silver oxide suspension may be additioned with one or more alkali metal, alkaline earth metal, or silver sulphides. Further the aqueous silver oxide suspension may be additioned with one or more silver salts soluble in water or made soluble by complexing with ammonia, such as ammoniacal silver sulphate, silver nitrate or ammoniacal silver nitrate.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: August 2, 1977
    Assignee: Montedison Fibre S.p.A.
    Inventors: Franco Montino, Luigi Colombo
  • Patent number: 4038041
    Abstract: An interlayer for transient liquid phase diffusion bonding of the nickel, cobalt and iron alloys is provided between surfaces to be joined as a thin lamellar composite.
    Type: Grant
    Filed: December 19, 1975
    Date of Patent: July 26, 1977
    Assignee: United Technologies Corporation
    Inventors: David Scott Duvall, Daniel Francis Paulonis
  • Patent number: 4036601
    Abstract: A turbine blade includes a core made of a highly heat-resistant alloy and a highly heat-resistant, nonporous, corrosion-resistant, metallic protective cover fitted onto the core. The cover forms a gas-tight metallurgical bond with the core and has great strength, high ductility and a uniform layer thickness. The process includes the steps of preshaping a core of highly heat-resistant material and fitting the preshaped core into a substantially preshaped, corrosion-resistant and highly heat-resistant cover. The cover is welded to the core at a point which during later use is subjected only to little stress to form a vacuum-tight seal and workpiece. The workpiece is heated in a pressure vessel to a temperature of at least C, and the cover of the heated workpiece is heat-welded to the core by isotactic hot-pressing without the formation of pores.
    Type: Grant
    Filed: March 26, 1975
    Date of Patent: July 19, 1977
    Assignee: Gesellschaft fur Kernforschung m.b.H.
    Inventors: Peter Weimar, Franz Bauer
  • Patent number: 4036599
    Abstract: A fiber reinforced metal composite comprising magnesium or a magnesium alloy containing substantially aligned, polycrystalline alumina fibers which have certain surface roughness characteristics and contain at least 80% Al.sub.2 O.sub.3 by weight.
    Type: Grant
    Filed: August 15, 1975
    Date of Patent: July 19, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ashok Kumar Dhingra
  • Patent number: 4036602
    Abstract: A protective sacrificial coating is provided for metal substrates, e.g. ferrous metal substrates, such as compressor discs or blades for jet engines, the sacrificial coating comprising an intermetallic compound of magnesium with a coating metal, the coating being anodic to the substrate metal, the coating being optionally covered with an adherent non-metallic overcoat of, for example, a conversion coating.
    Type: Grant
    Filed: November 26, 1975
    Date of Patent: July 19, 1977
    Assignee: Chromalloy American Corporation
    Inventors: Michael F. Dean, Roy L. Blize
  • Patent number: 4035180
    Abstract: The present invention provides a process for the catalytic reduction of aluminum chloride by manganese to form a high aluminum content alloy, separating the catalysis metal from the alloy, and separating the manganese in the alloy to produce essentially pure aluminum. As a preferred embodiment, liquid aluminum chloride is contacted with solid manganese metal in the presence of a Group IIB metal or compound thereof at a relatively low temperature and at a pressure to maintain the reactants in such phases.
    Type: Grant
    Filed: March 16, 1976
    Date of Patent: July 12, 1977
    Assignee: Toth Aluminum Corporation
    Inventors: John Christopher Terry, Roger Frank Sebenik, Ronald Wyndham
  • Patent number: 4033761
    Abstract: Copper sulfide in the presence or absence of metallic copper contained in a dross obtained from the copper drossing of lead bullion is separated from metallic lead entrained or occluded in the dross by introducing the dross into a vessel other than a reverberatory furnace, usually a kettle, also introducing an alkali metal sulfide, preferably sodium sulfide, into the kettle, and heating the dross and alkali metal sulfide together in the kettle at an elevated temperature not in excess of F. and for a time sufficient to melt together the dross and alkali metal sulfide. The thus-obtained molten dross releases the entrained molten lead which falls to the bottom of the kettle.
    Type: Grant
    Filed: May 10, 1976
    Date of Patent: July 5, 1977
    Assignee: Asarco Incorporated
    Inventors: Carl Richard DiMartini, William Lafayette Scott, Leo James Bulvanoski
  • Patent number: 4033792
    Abstract: This invention concerns composite articles, particularly those which contain single crystal components. A method is disclosed for joining single crystals together so that the resultant article is free from high angle grain boundaries and therefore possesses exceptional mechanical properties.
    Type: Grant
    Filed: April 7, 1976
    Date of Patent: July 5, 1977
    Assignee: United Technologies Corporation
    Inventors: Anthony F. Giamei, Bernard H. Kear
  • Patent number: 4033767
    Abstract: A highly corrosion resistant, durable, strong, hardenable and relatively inexpensive nickel based, high chromium, high iron, austenitic alloy has greatly improved malleability and hot workability. The alloy contains approximately the quantities indicated:Ni--30-48% (preferably to 38%, to balance to 100%)Cr--30-35%Co--4-7.5%Fe--3-25% (but preferably 10-25%)Mn--1-3.5%Cu--2.5-8%C--to 0.25%And has a content of Mo from about 0 to 3%, a content of Si from about 0.3% and wherein the sum of the Mo and Si content is less than about 4%. Boron may be added to increase the workability and forging properties of the alloy. The preferred content of approximately 3% Si and approximately 1% molybdenum results in an optimum balance of the age hardenable workability, and corrosion resistant properties. All percentages are by weight.
    Type: Grant
    Filed: September 19, 1975
    Date of Patent: July 5, 1977
    Assignee: Chas. S. Lewis & Co., Inc.
    Inventor: Thomas E. Johnson
  • Patent number: 4034142
    Abstract: Coatings are described which are particularly suited for the protection of nickel and cobalt superalloy articles at elevated temperatures. The protective nature of the coatings is due to the formation of an alumina layer on the surface of the coating which serves to reduce oxidation/corrosion. The coatings contain aluminum, chromium, yttrium (or other oxygen active elements) and a metal chosen from the group consisting of nickel, cobalt and iron or mixtures thereof. The coatings further contain a controlled percentage of silicon which serves to greatly improve the protection afforded by the alumina film to the surface of the coating.
    Type: Grant
    Filed: December 31, 1975
    Date of Patent: July 5, 1977
    Assignee: United Technologies Corporation
    Inventor: Ralph Julius Hecht