Patents Examined by Arthur J. Steiner
  • Titanium-base alloys
    Patent number: 4094708
    Abstract: A high strength creep resistant titanium alloy comprising titanium, 6% aluminium, 5% zirconium, 0.5% molybdenum, 0.25% silicon is disclosed in a particular heat-treated condition. The alloy is particularly useful for engine components.
    Type: Grant
    Filed: February 17, 1977
    Date of Patent: June 13, 1978
    Assignee: Imperial Metal Industries (KYNOCH) Limited
    Inventors: Roger Thomas John Hubbard, Richard Ernest Goosey, Donald Francis Neal
  • Preparation of zirconium alloys
    Patent number: 4094706
    Abstract: High tensile strength, creep and corrosion resistant zirconium alloys containing 7.0-10.0 wt% aluminum, 0-3 wt% in total of one or more elements selected from the group consisting of magnesium, tin, chromium, iron, carbon, silicon, yttrium, niobium, molybdenum and beryllium, the balance zirconium and incidental impurities, are produced by annealing cast alloys at a temperature below about 992.degree. C for a period of time sufficient to produce alloys having a substantially continuous matrix of the ordered intermetallic compound Zr.sub.3 Al. The alloys may initially be hot worked at temperatures above about 1000.degree. C, while in the .beta.Zr-Zr.sub.2 Al two phase region, prior to annealing. Preferred alloys contain 7.5-9.5% aluminum, the balance zirconium and incidental impurities.
    Type: Grant
    Filed: August 4, 1976
    Date of Patent: June 13, 1978
    Assignee: Atomic Energy of Canada Limited
    Inventors: Erland Maxwell Schulson, Donald James Cameron
  • Weathering steel with high toughness
    Patent number: 4094670
    Abstract: A weathering steel has high toughness and rapidly develops a protective oxide coating and contains C 0.05 - 0.15, Mn 0.5 - 1.5, Cu 0.2 - 0.5,Al 0.2 - 0.5, Si 0.1 - 0.8, Cr 0.5 - 1.5, S up to 0.02, P up to 0.04, Nb up to 0.020, N up to 0.010 Mo up to 0.15, Ti up to 0.1, balance essentially iron, the proportions being as follows:2.6(Mn%) + 3.2(Cu%) + 41.6(Nb%) + 1.3(Cr%/Al%) = 7.4 to 10.1 the value of Cr%/Al% being from 2 to 5, preferably from 3 to 4.
    Type: Grant
    Filed: July 1, 1977
    Date of Patent: June 13, 1978
    Assignee: Italsider S.p.A.
    Inventors: Roberto Bruno, Valerio Faccenda
  • Brazed aluminum composite
    Patent number: 4093782
    Abstract: Corrosion resistant brazed aluminum composite. The core alloy consists essentially of an aluminum base alloy containing from 0.05 to 0.4% chromium, from 0.02 to 0.9% manganese, up to 0.2% iron, up to 0.1% silicon and the balance essentially aluminum. The cladding brazing alloy consists essentially of an aluminum base alloy containing 4 to 14% silicon, up to 3% magnesium, up to 0.2% bismuth, balance essentially aluminum.
    Type: Grant
    Filed: March 3, 1977
    Date of Patent: June 6, 1978
    Assignee: Swiss Aluminium Ltd.
    Inventors: William H. Anthony, James M. Popplewell, Andrew J. Brock
  • Machines for the casting of metals
    Patent number: 4092155
    Abstract: A machine for the casting of metals having a moulding cavity formed by at least a moving casting belt and side dams, in which the said casting belt is made of mild killed steel containing between 0.2 and 0.8% by weight of titanium.
    Type: Grant
    Filed: July 18, 1974
    Date of Patent: May 30, 1978
    Assignee: Metallurgie Hoboken-Overpelt
    Inventors: John M. Dompas, Charles J. Petry
  • Ductile tungsten-nickel-alloy and method for manufacturing same
    Patent number: 4090875
    Abstract: The tensile elongation of a tungsten-nickel-iron alloy containing essentially 95 weight percent reprocessed tungsten, 3.5 weight percent nickel, and 1.5 weight percent iron is increased from a value of less than about 1 percent up to about 23 percent by the addition of less than 0.5 weight percent of a reactive metal consisting of niobium and zirconium.
    Type: Grant
    Filed: October 1, 1973
    Date of Patent: May 23, 1978
    Assignee: The United States of America as represented by the Department of Energy
    Inventor: Robert L. Ludwig
  • Welded steel products having low sensitivity to weld cracking and a production method thereof
    Patent number: 4091147
    Abstract: A welded steel product having a low sensitivity to weld cracking, produced by welding a base steel material comprising at least one member selected from the group consisting of rare earth metal, Ca, Ba, Te and Se using a welding material comprising at least one member selected from the group consisting of rare earth metals, Te and Se, and having a weld metal containing at least one rare earth metal in an amount of 0.0005 to 0.10% and at least one of Te and Se in an amount not more than 0.10%.
    Type: Grant
    Filed: November 4, 1976
    Date of Patent: May 23, 1978
    Assignee: Nippon Steel Corporation
    Inventors: Shogo Kanazawa, Akira Nakashima, Kazunari Yamato, Naoyuki Seriu, Tohru Watanabe, Susumu Nakazawa
  • Flexible, low porosity airfoil skin
    Patent number: 4091146
    Abstract: A flexible, low porosity airfoil skin is described which includes multilayer flexible, annealed metallic mesh members consisting of two or three such members selected from the class consisting of nickel, Monel alloy, and stainless steel, the members having a mesh size from 60 to 100, the members interlocked mechanically, and the skin having a thickness reduction in the range from 2.5 to 3.0. Such a flexible, low porosity airfoil skin is useful as a covering structure and is particularly useful as a skin or as a substrate for a cooled non-linear airfoil-shaped body, such as a turbine or compressor blade.
    Type: Grant
    Filed: May 5, 1977
    Date of Patent: May 23, 1978
    Assignee: General Electric Company
    Inventors: Kenneth A. Darrow, Daniel P. Smith
  • Lining alloy for bimetallic cylinders
    Patent number: 4089466
    Abstract: A wear and corrosion resistant alloy for lining cylinders used in extrusion and injection molding machines comprises tantalum carbide admixed with a nickel-cobalt base alloy. The cylinder lining is preferably prepared by placing a quantity of the alloy in the cylinder and capping the ends of the cylinder. The cylinder is then heated above the melting point of the alloy and spun at a high rate of speed to centrifugally coat the inner surface of the cylinder. The cylinder's end caps are then removed and the lining finished to the correct internal diameter and finish by conventional lath and hone means. The tantalum carbide added to the base alloy has an affinity for carbon and tends to reduce the free carbon in the final matrix producing a lining which has desirable hardness and corrosion resistance throughout the thickness of the lining.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: May 16, 1978
    Inventors: Donald P. Lomax, Ronald M. Boggs
  • Steel alloy for zinc and aluminum die casting
    Patent number: 4089679
    Abstract: A steel alloy composition consists essentially of the following ingredients by weight in the range: Carbon - 0.12 to 0.17%; Manganese - 0.75 to 0.85%; Silicon - 0.15 to 0.35%; Chromium - 1.40 to 1.85%; Molybdenum - 0.40 to 0.50%; Tungsten - 0.10 to 0.15%; Iron - the balance. The method of making nozzles, noses, plungers, and shot sleeves which includes the above composition, for use in zinc and aluminum die casting includes machining the product and heat-treating.
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: May 16, 1978
    Assignee: Pennsylvania Steel Corporation
    Inventor: Kenneth Zecman
  • Abrasion-resistant cast irons
    Patent number: 4088476
    Abstract: An abrasion-resistant cast iron having extremely good resistances to scuffing and abrasion, comprising a pearlite matrix and 2 to 15% of boron carbide and 2 to 7% of graphite flakes, the percentages being in terms of percent areas. The cast iron is useful, for example, for piston rings and cylinder liners of internal combustion engines.
    Type: Grant
    Filed: October 29, 1976
    Date of Patent: May 9, 1978
    Assignee: Nippon Piston Ring Co., Ltd.
    Inventors: Tsutomu Takao, Kentaro Takahashi
  • Corrosion-resistant alloys
    Patent number: 4088478
    Abstract: An air-meltable castable alloy, resistant to corrosion by sulfuric acid over a wide range of acid strengths and degrees of contamination. As essential constituents, the alloy contains between about 34.10 and about 39.33% by weight nickel, between about 12.50 and about 14.29% by weight chromium, between about 5.90 and about 17.89% by weight molybdenum, between about 2.90 and about 5.67% by weight copper, between about 0.10 and about 1.25% by weight silicon, between about 0.003 and about 0.15% by weight carbon, and between about 22 and about 29% by weight iron. It may also contain up to about 3.0% by weight manganese, up to about 9.80% by weight tungsten, up to about 4.68% by weight tantalum, and up to about 3.00% by weight niobium.
    Type: Grant
    Filed: December 16, 1976
    Date of Patent: May 9, 1978
    Assignee: Carondelet Foundry Company
    Inventor: John H. Culling
  • Titanium base alloy
    Patent number: 4087292
    Abstract: A titanium base alloy for aeronautical use having good high temperature creep properties and being oxidation-resistant, the alloy being 5-6wt% aluminum, 21/2-41/2wt% tin, 2-4wt% zirconium, 0.75-1.25wt% niobium, 0.1-0.6wt% molybdenum, 0.2-0.4wt% silicon, balance titanium, apart from incidental impurities. The alloy may be beta heat treated and aged, optionally with an intermediate heat treatment before the aging.
    Type: Grant
    Filed: May 6, 1976
    Date of Patent: May 2, 1978
    Assignee: Imperial Metal Industries (Kynoch) Limited
    Inventors: Donald Francis Neal, Paul Addyman Blenkinsop
  • Steel wire for gas shielded welding
    Patent number: 4087674
    Abstract: A steel wire for short circuiting gas shielded transfer welding which comprises 0.5 to 1.0% of Si, 1.0 to 2.0% of Mn, not more than 0.015% of P, S and N, respectively, 0.07 to 0.20% of C and not more than 0.020% of total oxygen, the total oxygen being the sum of the oxygen within the wire plus the oxygen adhered to the surface of the wire being more than about 0.004%.
    Type: Grant
    Filed: February 8, 1977
    Date of Patent: May 2, 1978
    Assignee: Nippon Steel Corporation
    Inventors: Kazumaru Kohira, Shiro Aoki, Taizi Nagatani
  • Coated article
    Patent number: 4087589
    Abstract: An article having an outer surface and an inner cavity, such as a hole or channel with a metallic inner surface, is provided with an inner metallic coating on the inner surface and, in one form, an outer metallic coating on the outer surface. The inner coating is provided as a result of decomposition and subsequent thermal homogenization of one or more organic compounds including Al, Cr or Ni or alloys including one or more of those elements. The outer coating can be the same as the inner coating or can be a metallic coating of one of a variety of known metallic coatings.
    Type: Grant
    Filed: November 19, 1976
    Date of Patent: May 2, 1978
    Assignee: General Electric Company
    Inventor: Irwin I. Bessen
  • Drive shaft assembly and method
    Patent number: 4087593
    Abstract: An improved drive shaft assembly of uniform high strength, and a method for producing the assembly. The method includes welding a tubular shaft of an alloy steel to an end fitting such as the yoke of a universal joint or a coupling. The welded assembly is then heat treated by bringing the assembly to the austenite phase, uniform throughout the assembly, quenching the assembly in a vertical position, and thereafter tempering the assembly at a temperature uniform throughout to the desired hardness. In this manner, the non-uniform structures in the heat affected weld zone are made homogeneous, thereby producing favorable distribution of strength characteristics and residual stresses throughout the entire assembly.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: May 2, 1978
    Assignee: Dana Corporation
    Inventors: Orville F. Phelps, Innis J. MacRitchie
  • Austenitic iron alloys
    Patent number: 4086085
    Abstract: Austenitic iron base alloys containing nickel and with relatively high aluminum and chromium contents within ranges which are critical to the formation of an aluminum oxide protective film when the alloys are exposed to oxidizing environments at temperatures up to about 1700.degree. F. The alloys exhibit excellent high temperature strength and oxidation resistance.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: April 25, 1978
    Inventor: James A. McGurty
  • Alumina forming coatings containing hafnium for high temperature applications
    Patent number: 4086391
    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, and one metal chosen from the group consisting of nickel and cobalt or mixtures thereof. The coatings further contain a small controlled percentage of hafnium which serves to greatly improve the adherence and durability of the protective alumina film on the surface of the coating.
    Type: Grant
    Filed: September 1, 1976
    Date of Patent: April 25, 1978
    Assignee: United Technologies Corporation
    Inventors: Charles Stanley Giggins, Jr., Bernard Henry Kear
  • Enameled cold rolled sheet
    Patent number: 4084991
    Abstract: An enameling steel sheet characterized by a manganese content of 0.50 wt.% or under and the elimination of annealing after the final cold rolling. A satisfactory enamel adhesive property can be obtained by enameling and baking said enameling steel sheet in as-cold-rolled state after only degreasing and drying.
    Type: Grant
    Filed: October 12, 1976
    Date of Patent: April 18, 1978
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Kazuo Matsudo, Takayoshi Shimomura, Teruo Kurokawa
  • Thin molybdenum coatings on aluminum for solar energy absorption
    Patent number: 4082907
    Abstract: A thin, adherent coating is described that is highly absorptive to solar energy and has a low emissivity for thermal energy, thereby being a useful selective surface for solar energy collection. This coating is formed on aluminum and its alloys by a simple electrochemical process and consists of complex aluminum and molybdenum oxides and metallic molybdenum which are deposited as a near-monatomic layer of molybdenum and its oxides. The coating withstands exposure to 400.degree. F (204.degree. C) and 1 hour in boiling water without change in properties.
    Type: Grant
    Filed: June 3, 1977
    Date of Patent: April 4, 1978
    Assignee: Reynolds Metals Company
    Inventors: Daniel Joseph Schardein, Ruth Diane Lloyd