Patents Represented by Attorney, Agent or Law Firm Edward A. Steen
  • Heat treatment method for reducing polythionic acid stress corrosion cracking
    Patent number: 4969964
    Abstract: A heat treatment of alloy 617 generally including 732.degree. C.-927.degree. C. (1350.degree. F.-1700.degree. F.) for about one hour. The resultant discontinuous carbide network in the grain boundaries inhibits stress corrosion crack growth in polythionic acid environments.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: November 13, 1990
    Assignee: Inco Alloys International, Inc.
    Inventors: James R. Crum, William G. Lipscomb, Pasupathy Ganesan
  • Process for producing single crystals
    Patent number: 4961818
    Abstract: A process for producing a single crystal object made of a nickel-base, O.D.S., gamma prime strengthened alloy which involves diffusion bonding a seed crystal to a mass of such alloy in recrystallizable state and thereafter zone annealing to grow a single crystal through the mass of alloy.
    Type: Grant
    Filed: June 21, 1985
    Date of Patent: October 9, 1990
    Assignee: Inco Alloys International, Inc.
    Inventor: Raymond C. Benn
  • Production of oxidic superconductors by zone oxidation of a precursor alloy
    Patent number: 4962085
    Abstract: Discloses a process for producing oxidic superconductors having advantageously textured oxide structures which involves zone oxidizing elongated metallic precursors of the superconductors.
    Type: Grant
    Filed: April 12, 1988
    Date of Patent: October 9, 1990
    Assignee: Inco Alloys International, Inc.
    Inventors: John J. deBarbadillo, II, Gaylord D. Smith
  • Production of oxidic superconductor precursors
    Patent number: 4962084
    Abstract: A process for producing an oxidic superconductor precursor alloy which comprises mechanicallly allowing metallic elemental constituents of the oxidic superconductor in stoichiometric proportions and in the presence of a process control agent non-detrimental to the superconductor to provide a uniform mechanically alloyed product which is compacted and worked to provide a product form such as wire, tape or thin strip. This product form can then be given the configuration required for use (e.g. open coil) and then oxidized to provide the superconductor.
    Type: Grant
    Filed: April 12, 1988
    Date of Patent: October 9, 1990
    Assignee: INCO Alloys International, Inc.
    Inventors: John J. deBarbadillo, II, Gaylord D. Smith
  • Tundish for ingot pouring
    Patent number: 4961563
    Abstract: A tundish system for teeming an entire heat from a furnace into a mold. The tundish includes a plurality of chambers; one chamber including a nozzle. The chambers are arranged to interrupt the flow of the heat from one chamber to another thereby causing better separation between the metal and the slag. The tundish is mounted on a movable frame supporting a plurality of molds. A trough is disposed between the tundish and the molds. During the pour, the tundish remains stationary as the trough and the molds are moved underneath in succession.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: October 9, 1990
    Assignee: INCO Alloys International, Inc.
    Inventors: Francis S. Suarez, James E. Roberts, Vinayak P. Kamdar, James R. Hyatt, Lloyd A. Lowe
  • Method for surface activation of water atomized powders by pickling
    Patent number: 4960459
    Abstract: A method for pickling and consolidating water atomized metallic powders to reduce surface oxides. The technique includes introducing the powder into an acid bath--preferably nitric acid and hydrofluoric acid, rinsing the powder, introducing the powder into an alkaline bath, rinsing the powder and then consolidating the powder into a workpiece. Alternatively, the powder can be additionally introduced into a second acid bath and/or placed into a finishing boric acid bath before consolidation.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: October 2, 1990
    Assignee: Inco Alloys International, Inc.
    Inventors: Jon M. Poole, Lindy J. Curtis
  • Method of forming nickel foam
    Patent number: 4957543
    Abstract: The invention provides a nickel foam and a method of forming a nickel foam for a nickel containing battery. An open-cell foam structure is placed in a nickel carbonyl gas containing structure. The foam structure is heated to a temperature at which nickel carbonyl decomposes. Nickel from the nickel carbonyl gas decomposes on the foam structure to form a nickel plated foam structure. The nickel plated foam structure is then sintered leaving an open-cell nickel network to form the nickel foam. The open-cells of the nickel foam comprise substantially hollow wires having a substantially uniform transverse cross-section. The nickel foam is further characterized by the conductivity through the nickel foam multiplied by a factor of 3.4 being equal to or greater than the theoretical conductivity of nickel.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: September 18, 1990
    Assignee: Inco Limited
    Inventors: Juraj Babjak, Victor A. Ettel, Vladimir Paserin
  • Clad metal electrode
    Patent number: 4958060
    Abstract: A clad metal electrode having a core, a sleeve and a consolidated metal powder therebetween bonding the sleeve to the core. The clad metal electrode is particularly useful with an iron rod core and compressed nickel powder between the iron rod and the nickel sleeve. The resultant clad welding rod permits higher operating amperages during welding operations.
    Type: Grant
    Filed: July 12, 1989
    Date of Patent: September 18, 1990
    Assignee: Inco Alloys International, Inc.
    Inventors: William L. Mankins, David O. Gothard, Charles P. Hardy
  • Coated article having a base of age-hardened metal
    Patent number: 4956026
    Abstract: A structure comprising a base of an age-hardened alloy having on at least part of the surface thereof a layer of precious metal. The precious metal, e.g. gold, contains amounts of nickel grading downwardly from the inner surface of the precious metal layer such that the outer surface contains about 1% to about 10% nickel. The process of making such a structure is also disclosed.
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: September 11, 1990
    Assignee: Inco Limited
    Inventor: James A. E. Bell
  • Butterfly valve for erosive fluid streams
    Patent number: 4944325
    Abstract: A butterfly valve having a central cavity larger than the access ports. A disc is disposed within the central cavity to sealingly engage the interior of the valve. A molded elastomeric liner covers the interior of the valve and the disc. By utilizing a central cavity of larger cross sectional area than the access ports, internal valve and downstream pipe turbulence is reduced resulting in increased component lifetimes.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: July 31, 1990
    Assignee: INCO Limited
    Inventors: Stanley L. Baldwin, Charles W. Berscheid
  • Corrosion resistant coating for oxide dispersion strengthened alloys
    Patent number: 4943487
    Abstract: A corrosion resistant duplex coating for oxide dispersion strengthened alloys permitting high temperature applications is disclosed. An inner coating substantially free of oxide dispersoids and compatible with the substrate is sandwiched between the substrate and an outer layer of the MCrA1Y type.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: July 24, 1990
    Assignee: INCO Alloys International, Inc.
    Inventors: Raymond C. Benn, Gaylord D. Smith, Donald H. Boone
  • Welding flux and welding electrode
    Patent number: 4940882
    Abstract: A welding flux and welding electrode containing a copper-nickel core is described which results in very low porosity when used in the overhead welding position as well as all other welding positions.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: July 10, 1990
    Assignee: Inco Alloys International, Inc.
    Inventor: Thomas O. Bates
  • System for coating particles employing a pneumatic transport reactor
    Patent number: 4936250
    Abstract: A reactor/transporter apparatus for coating particles by thermally decomposing at least one metal carbonyl into selected metal values and carbon monoxide with the metal values depositing on the particles. The reactor/transporter includes an upper end, a lower end and a source of transport fluid including the metal carbonyl. The transport fluid is supplied into the reactor/transporter for coating particles as they travel from the lower to the upper end. A separator is connected to the upper end of the reactor/transporter for separating the particles from the transport fluid. A downcomer is connected to the separator for collecting the particles. A heater heats the particles and a valve regulates the flow of particles into the reactor/transporter from the downcomer. In addition, the reactor/transporter has a purge vessel for removing coated particles.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: June 26, 1990
    Assignee: Inco Limited
    Inventors: Leonard G. Wiseman, George P. Tyroler, Gordon E. Cuthbert, John W. Gullick
  • Method for making a clad metal product
    Patent number: 4933141
    Abstract: A process for producing clad products that utilizes wrought or cast components eliminating the need for costly metal powders and a can to contain them. A sleeve circumscribes a core leaving a space therebetween. Powder is introduced into the space and is sealed therein. The resultant billet is extruded generating a clean metallurgical bond between the core and the sleeve. The space need not be evacuated prior to heating the billet. Resultant clad welding rod permits higher operating amperages.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: June 12, 1990
    Assignee: INCO Alloys International, Inc.
    Inventors: William L. Mankins, David O. Gothard, Charles P. Hardy
  • Apparatus and process for coloring objects by plasma coating
    Patent number: 4926792
    Abstract: A technique for presenting and fixturing small items that are coated by vapor deposition techniques. The objects are caused to be moved within the plasma stream to effect full coverage. The coating, if titanium nitride, is gold colored and is, for example, useful for coinage applications.
    Type: Grant
    Filed: August 10, 1989
    Date of Patent: May 22, 1990
    Assignee: Inco Limited
    Inventors: James A. E. Bell, Bruce R. Conard
  • Promoting directional grain growth in objects
    Patent number: 4921549
    Abstract: A heat treating method for promoting directional recrystallization in objects in general and, more particularly, forgings having relatively low length to thickness ratios. The objects are partially embedded in containers having insulating material therein. The containers are placed into furnaces wherein the rate of the advancing isotherm travelling through the objects are controlled. This process may be used in lieu of zone annealing and static recrystallization heat treatments.
    Type: Grant
    Filed: March 19, 1984
    Date of Patent: May 1, 1990
    Assignee: Inco Alloys International, Inc.
    Inventor: Curtiss M. Austin
  • Method for strengthening cold worked nickel-base alloys
    Patent number: 4909860
    Abstract: A heat treatment method for strengthening cold worked tubes made from nickel-base alloys without an attendant loss in corrosion resistance properties. Especially useful for tubes destined for energy resource recovery areas, oil fields, sour gas wells, etc., the tubes may be heated from 316.degree.-769.degree. C. (600.degree.-1100.degree. F.) for up to an hour.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: March 20, 1990
    Assignee: Inco Alloys International, Inc.
    Inventors: Jimmy C. England, Hugh H. Ruble, Jr., Jon M. Poole
  • Low coefficient of expansion alloys having a thermal barrier
    Patent number: 4900640
    Abstract: A low coefficient of expansion alloy is coated with a thermal barrier coating having a low coefficient of expansion compatible with the alloy. The alloy, preferably a 900 series iron-base alloy, includes an oxidation resistant intermediate bond coating and a zirconia containing thermal barrier. An article of manufacture made from this material could be utilized in heat engines where close tolerances are mandated.
    Type: Grant
    Filed: April 19, 1988
    Date of Patent: February 13, 1990
    Assignee: Inco Limited
    Inventors: James A. E. Bell, John J. deBarbadillo
  • Rotary mill with charging system
    Patent number: 4887773
    Abstract: A rotary-type mill is provided with a system for charging powder to a mill under seal from atmospheric air, the system being comprised of a sealable loading conduit and a valve assembly. The valve assembly, which controls the opening to the mill, is disposed in part in the sealable loading conduit, and is operable without breaking the seal to the atmosphere. In addition to permitting charging and operations of the mill in a protective environment, the system is designed for gravity-dependent essentially unencumbered vertical entry of feed to the mill and for minimization of the problem of wear of machine parts during operation of the mill.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: December 19, 1989
    Assignee: Inco Alloys International, Inc.
    Inventor: James C. Mehltretter
  • Sulfidation/oxidation resistant alloys
    Patent number: 4882125
    Abstract: Nickel-base, high chromium alloys characterized by good sulfidation and oxidation resistance consisting essentially of about 27 to 35% chromium, about 2.5 to 5% aluminum, about 2.5 to about 6% iron, 0.5 to 2.5% columbium, up to 0.1% carbon, up to 1% each of titanium and zirconium, up to 0.05% cerium, up to 0.05% yttrium, up to 1% silicon, up to 1% manganese, balance nickel.
    Type: Grant
    Filed: April 22, 1988
    Date of Patent: November 21, 1989
    Assignee: INCO Alloys International, Inc.
    Inventors: Gaylord D. Smith, Curtis S. Tassen