Patents Examined by Robert L. McDowell
  • Patent number: 4708326
    Abstract: A molten metal pouring cup is provided communicating with a transfer means for transferring molten metal from the pouring cup to a casting station. Vent means is provided on the pouring cup at the interface between the pouring cup and the transfer means to permit release of entrapped gas downstream of the pouring cup.
    Type: Grant
    Filed: December 15, 1986
    Date of Patent: November 24, 1987
    Assignee: Swiss Aluminium Ltd.
    Inventors: Jerry W. Brockmeyer, Leonard S. Aubrey, James E. Dore, Clifford N. Soble
  • Patent number: 4704169
    Abstract: A composite rapidly quenched alloy material comprises a matrix composed of a rapidly quenched alloy, such as an amorphous or crystalline alloy, or a mixture thereof, and particles of at least one second-phase substance dispersed in the matrix uniformly and three-dimensionally.
    Type: Grant
    Filed: September 8, 1983
    Date of Patent: November 3, 1987
    Inventors: Hiroshi Kimura, Tsuyoshi Masumoto
  • Patent number: 4702782
    Abstract: High modulus turbine shafts are described as are the process parameters for producing these shafts. The shafts have a high modulus as a result of having high modulus <111> crystal texture in the axial direction. The shafts are produced from a nickel base material consisting largely of the compound Ni.sub.3 Si. Hot axisymmetric deformation followed by cold axisymmetric deformation produces an intense singular <111> texture and results in shaft material whose Young's modulus is at least 25% greater than that of the steel materials used in the prior art.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: October 27, 1987
    Assignee: United Technologies Corporation
    Inventor: Herbert A. Chin
  • Patent number: 4702462
    Abstract: A water-cooled lance for blowing oxygen or oxygen containing gas onto a metal melt, for example an iron melt, for afterburning reaction gases from the melt and transfering the heat of afterburning back to the melt comprises a center tube forming a gas supply duct surrounded by further tubes for cooling water. The center tube leads to a head having a plurality of oxygen-blowing nozzles. Each of the nozzles has a plurality of oxygen outlet openings. The outlet openings have their centers lying on two concentric circles and are arranged so that each opening produces an individual gas stream. The axes of the outlet openings are inclined to the longitudinal axis of the lance at angles such that, in a plane perpendicular to the longitudinal axis of the lance and at a distance Lh from the head, the gas streams extend over an annular area in the plane having an inside diameter Di and and outside diameter Da. Lh, Di and Da have the following relationships:Di:Lh is the range of from 0.15 to 0.
    Type: Grant
    Filed: March 3, 1986
    Date of Patent: October 27, 1987
    Assignee: Klockner CRA Technologie GmbH
    Inventor: Ernst Fritz
  • Patent number: 4698102
    Abstract: Steel blackplate for surface treatment, having a soft temper degree of T-3 or less, and improved fluting resistance is produced by the combination of a chemical composition of 0.01% to 0.08% carbon, 0.015% or less phosphorus, without titanium and niobium; steelmaking without vacuum-degassing; a low slab-heating temperature of 1240.degree. C. or less; a coiling temperature of 620.degree. C. to 710.degree. C.; continuous annealing having a heat pattern to decrease the solute carbon and nitrogen; and skin-pass rolling.
    Type: Grant
    Filed: July 3, 1985
    Date of Patent: October 6, 1987
    Assignee: Nippon Steel Corporation
    Inventors: Kuniaki Maruoka, Nobuyuki Takahashi, Senkichi Tujimura, Yasuhiko Yamashita, Setsuo Otsuka, Isao Oohasi, Takeo Motoyama
  • Patent number: 4698270
    Abstract: A spiral thermostatic coil is made from a four layer thermostatic metal comprising relatively thick intermediate LES and HES layers bonded to each other, a low expansion, corrosion-resistant, relatively thin metal layer bonded to the LES layer, and a high expansion, corrosion-resistant relatively thin metal layer bonded to the HES layer. The flexivity is reduced less than about 10% by the corrosion-resistant layers.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: October 6, 1987
    Assignee: GTE Products Corporation
    Inventor: Jacob J. Ornstein
  • Patent number: 4698271
    Abstract: A method of joining ceramics and metals to themselves and to one another is described using a brazing filler metal consisting essentially of 35 to 50 atomic percent copper, 15 to 50 atomic percent silver and 10 to 45 atomic percent titanium. This method produces strong joints that can withstand high service temperatures and oxidizing environments.
    Type: Grant
    Filed: December 30, 1985
    Date of Patent: October 6, 1987
    Assignee: The United States of America as represented by the Department of Energy
    Inventor: Arthur J. Moorhead
  • Patent number: 4695428
    Abstract: A low temperature, lead-free, cadmium-free solder for joining metals, primarily copper tube or brass pipe and fittings. The solder composition, being free of lead and other known toxic metals, has a composition range of 0.5-4.0% antimony, 0.5-4.0% zinc, 0.1-3.0% silver, 0.1-2.0% copper and 86.8-98.8% tin, is especially adaptable for plumbing applications where solder joints are exposed to potable water.
    Type: Grant
    Filed: August 21, 1986
    Date of Patent: September 22, 1987
    Assignee: J. W. Harris Company
    Inventors: Richard E. Ballentine, Robert M. Henson
  • Patent number: 4695042
    Abstract: A lance supporting device has a lance turntable rotatable within a plane and carrying a plurality of lance operation units each supporting a lance for inserting a gas and/or a powdered treating agent into a molten metal. Each lance operation unit has means for lifting/lowering, rotating and tilting the lance. The lance turntable carrying the plurality of lance operation units is disposed in the central hollow or cavity of a doughnut-shaped turntable which carries a plurality of vacuum degassing vessels.
    Type: Grant
    Filed: March 17, 1986
    Date of Patent: September 22, 1987
    Assignee: Nippon Steel Corporation
    Inventor: Takenori Kudou
  • Patent number: 4691900
    Abstract: A metal melting furnace equipped with a preheating tower having a plurality of fork-shaped shelf-plates extending into the inside thereof, comprising a gas mixing chamber provided in the lower end portion of the tower, communicating with the upper portion of the melting furnace, a duct for circulating combustion exhaust gas from the top portion of the tower into the gas mixing chamber, a damper arranged in the duct for controlling the amount of the combustion exhaust gas circulated into the gas mixing chamber, and a plurality of nozzles connected to the duct and opening into the gas mixing chamber.
    Type: Grant
    Filed: August 14, 1986
    Date of Patent: September 8, 1987
    Assignee: Kankyo Souken Consultant, Co., Ltd.
    Inventor: Isamu Maeda
  • Patent number: 4692305
    Abstract: A novel alloy is disclosed which is characterized by high resistance to wear and corrosion. The alloy consists essentially of 2 to 25% chromium, 5 to 30% molybdenum, 3 to 15% tungsten, 2 to 8% copper, 2 to 8% boron, and 0.2 to 2% carbon; the balance being incidental impurities and at least 30% of a metal selected from the group consisting of nickel, cobalt and combinations thereof, with the total of molybdenum and tungsten being at least 16%. The alloy is preferably in the form of a powder for thermal spraying, and coating produced thereby generally have an amorphous structure.
    Type: Grant
    Filed: November 5, 1985
    Date of Patent: September 8, 1987
    Assignee: Perkin-Elmer Corporation
    Inventors: Subramaniam Rangaswamy, John H. Harrington
  • Patent number: 4690799
    Abstract: Superelastic dental Au-Cu-Zn alloys characterizing that it is in a range defined by point A (63 wt % Au, 11 wt % Cu, 26 wt % Zn), Point B (55 wt % Au, 17 wt % Cu, 28 wt % Zn), Point C (55 wt % Au, 18 wt % Cu, 27 wt % Zn), Point D (63 wt % Au, 14 Wt % Cu, 23 wt % Zn), Point E (65 wt % Au, 12 wt % Cu, 23 wt % Zn) and Point F (65 wt % Au, 11 wt % Cu, 24 wt % Zn), in the Au-Cu-Zn ternary diagram of FIG. 1.
    Type: Grant
    Filed: March 12, 1986
    Date of Patent: September 1, 1987
    Assignee: G-C Dental Industrial Corp.
    Inventor: Takaichi Yoshida
  • Patent number: 4688772
    Abstract: An apparatus for sealing the skirt of a converter waste gas recovery system is disclosed, which includes an annular flange that is mounted about the outside surface of the converter adjacent to its mouth at a point clear outside the reach of the molten slag and metal that might spill over the rim of the converter mouth during the process of blowing. An annular sealing band is provided at the lower peripheral portion of the skirt, which runs surrounding the mouth. The annular sealing band is divided into multiple arcuate segments of a whole bandage, each pivotally disposed on a horizontal pin and connected to a separate hydraulic cylinder through its axially movable piston rod. It is so designed that the segments of the annular sealing band are individually yet simultaneously swung about their respective pins by their hydraulic cylinders into abutting contact with the external periphery of the flange providing a tight leakproof seal.
    Type: Grant
    Filed: May 1, 1986
    Date of Patent: August 25, 1987
    Assignees: Nippon Steel Corporation, Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Toyo-o Murata, Hiroshi Narita, Yukinori Shigeyama, Mazumi Nishikawa
  • Patent number: 4687184
    Abstract: A solid non-permeable refractory plug of an inverted frusto-conical shape has a spaced metal jacket and is located in an inverted frusto-conical shaped cavity in a pocket block incorporated in the normal refractory lining of a ladle to provide a structure through which gas can be introduced into the molten metal in an unusually large annular stream. A tubular body member is attached to the smaller lower end of the refractory plug and metal jacket and extends downwardly through the refractory lining of the ladle and an opening in the bottom of the ladle to which it is secured by a fastener and through which gas is introduced into the ladle. The large annular stream of gas formed by the device results in an improved stirring action in the molten metal and displaces molten metal that would otherwise tend to flow into the device and close the gas passageway. The device is inserted into the pocket block by moving it downwardly through the ladle and the pocket block.
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: August 18, 1987
    Assignee: Insul Company, Inc.
    Inventors: Michael D. Labate, Joseph A. Perri
  • Patent number: 4687597
    Abstract: A fritless copper conductor composition suitable for overprinting on copper consisting essentially of (a) 10-50% wt. finely divided copper particles, (b) 90-50% wt. coarse copper particles, (c) 0.2-2% wt. reducible heavy metal oxide, (d) 0-1.0% refractory metal and (e) 0-5.0% of a high surface area noble metal, all the particles being dispersed in an organic medium.
    Type: Grant
    Filed: January 29, 1986
    Date of Patent: August 18, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Vincent P. Siuta
  • Patent number: 4686083
    Abstract: An aluminum alloy support for a lithographic printing plate, suitable for an electrochemical roughening treatment and excellent in fatigue resistance, heat softening resistance and printability, is provided which comprises 0.05 to less than 1% by weight of Mn, at most 0.2% by weight of Si, at most 0.5% by weight of Fe and unavoidable amounts of impurities.
    Type: Grant
    Filed: April 26, 1985
    Date of Patent: August 11, 1987
    Assignees: Fuji Photo Film Co., Ltd., Sumitomo Light Metal Industries, Ltd., Skyaluminium Co., Ltd.
    Inventors: Kazushige Takizawa, Hirokazu Sakaki, Yuji Abe, Mamoru Matsuo, Akira Tajiri, Shin Tsuchida
  • Patent number: 4675157
    Abstract: A rapidly solidified magnesium based alloy contains finely dispersed magnesium intermetallic phases. The alloy has the form of a filament or a powder and is especially suited for consolidation into bulk shapes having superior mechanical properties and corrosion resistance.
    Type: Grant
    Filed: June 7, 1984
    Date of Patent: June 23, 1987
    Assignee: Allied Corporation
    Inventors: Santosh K. Das, Derek Raybould, Richard L. Bye, Jr., Chin-Fong Chang
  • Patent number: 4671932
    Abstract: In order to obtain, in a hard alloy based on a nickel-chromium-boron-silicon alloy, particularly advantageous properties with regard to hardness and toughness, carbides of the elements vanadium, niobium, tantalum and/or chromium are added to the hard alloy.
    Type: Grant
    Filed: April 27, 1984
    Date of Patent: June 9, 1987
    Assignee: Herman C. Starck Berlin
    Inventors: Reinhold Lutz, Helgo Wendt, deceased, Helmut Meinhardt, Heinz Eschnauer, E. Lugscheider
  • Patent number: 4670217
    Abstract: A low temperature, lead-free, cadmium-free solder for joining metals, primarily copper tube or brass pipe and fittings. The solder composition, being free of lead and other known toxic metals, has a composition range of 0.5-4.0% antimony, 0.5-4.0% zinc, 0.5-2.0% silver and 90.0-98.5% tin, is especially adaptable for plumbing applications where solder joints are exposed to potable water.
    Type: Grant
    Filed: July 26, 1985
    Date of Patent: June 2, 1987
    Assignee: J. W. Harris Company
    Inventors: Robert M. Henson, Kent H. Cartheuser
  • Patent number: 4670354
    Abstract: Disclosed is a phosphated steel product and a method for producing the product. The method comprises passing at least one side of a steel strip through a molten bath of a metal selected from the group consisting of Zn-Al and Zn-Fe to form a first coating, electroplating a second coating consisting of essentially a pure metal selected from the group consisting of Mn, Fe and Ni onto the first coating and subjecting the exposed surface of the second coating to a phosphating treatment to form a phosphate coating on the second coating.
    Type: Grant
    Filed: July 3, 1985
    Date of Patent: June 2, 1987
    Assignees: Phenix Works, Cockerill-Sambre
    Inventors: Victor Polard, Jean Palmans, Michel DuBois, A. Weymeersch