Patents Examined by Peter K. Skiff
  • Patent number: 4981531
    Abstract: Disclosed are processes for producing cold rolled steel sheets and strips having excellent press formability and ageing property by a continuous annealing method, in which specific heating cycles are adopted in combination with steel compositions with lowered phosphorus contents.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: January 1, 1991
    Assignee: Nippon Steel Corporation
    Inventors: Hiroshi Katoh, Hiromi Toyota, Kazuo Koyama, Kunihiko Komiya
  • Patent number: 4650650
    Abstract: A copper-based alloy is described consisting essentially of:______________________________________ Tin 25-225 ppm Tellurium or Selenium 25-225 ppm Phosphorus 10-50 ppm Copper Balance ______________________________________The alloys can be used in many forms, including sheet, strip, bar, rod and wire. Sheet stock made from this alloy is useful as automotive radiator fin stock. In addition, electrical components can be made from the alloy of this invention. All of these materials have thermal and electrical conductivity properties and softening temperatures equal to or better than the prior art alloys adapted for these applications. In addition, the alloys of this invention can utilize relatively inexpensive materials and do not present significant toxicity problems and are readily analzyed using common industrial analysis equipment.
    Type: Grant
    Filed: October 20, 1983
    Date of Patent: March 17, 1987
    Assignee: American Brass Company, L.P.
    Inventor: Vinayak K. Patel
  • Patent number: 4629515
    Abstract: A superconductive substance is produced by fabricating any one metal (17) of niobium and vanadium and an easily deformable metal (16) such as Cu into one piece and working it to produce a composite metallic wire, chemically dissolving and removing the easily deformable metal (16) from the composite metallic wire, and then depositing a tin or gallium-base metal (18) and applying heat treatment.Also, a process for producing a superconductive substance comprising fabricating any one metal of niobium and vanadium and an easily deformable metal such as Cu containing at least one metal of tin and gallium into one piece and working it to produce a composite metallic material, heat treating the composite metallic material to form a superconductive substance, and then chemically dissolving and removing the easily deformable metal as a non-conductive substance from the composite metallic material is disclosed.
    Type: Grant
    Filed: December 30, 1982
    Date of Patent: December 16, 1986
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Mitsuyuki Imaizumi, Kiyoshi Yoshizaki
  • Patent number: 4600449
    Abstract: An aircraft flight data recorder housing comprising a titanium alloy having a nominal composition of 15 weight percent vanadium, 3 weight percent chromium, 3 weight percent tin, and 3 weight percent aluminum with the balance being titanium and, within limitations, certain trace elements. The alloy is simultaneously hot formed and solution heat treated at temperatures on the order of 1400.degree. F. to 1500.degree. F. to fabricate the recorder housing.
    Type: Grant
    Filed: January 19, 1984
    Date of Patent: July 15, 1986
    Assignee: Sundstrand Data Control, Inc.
    Inventors: Kenneth W. White, William F. Spurr
  • Patent number: 4596606
    Abstract: A method is disclosed for making compacted graphite cast iron of improved strength and hardness while retaining excellent thermal conductivity, low shrinkage, and excellent damping characteristics. A ferrous alloy is melted consisting essentially of, by weight, 3-4% C, 2-3% Si, 0.2-0.7% Mn, 0.25-0.4 Mo, 0.5-3.0% Ni, up to 0.002% sulfur, up to 0.02% phosphorus, and impurities or contaminants up to 1.0%, with the remainder being essentially iron. The melt is subjected to a graphite modifying agent to form compacted graphite upon solidification. The solidified casting is heat treated by austempering and quenching to produce an iron having a matrix of bainite and austenite.
    Type: Grant
    Filed: September 4, 1984
    Date of Patent: June 24, 1986
    Assignee: Ford Motor Company
    Inventors: Bela V. Kovacs, Roman M. Nowicki
  • Patent number: 4576654
    Abstract: There is provided a nuclear fuel element having a zirconium alloy cladding tube with improved corrosion resistance. The cladding tube comprises a metallurgical gradient across the width of the tube wall wherein the tube has a more corrosion-resistant metallurgical condition at the outer circumference and a less corrosion-resistant metallurgical condition at the inner circumference. The metallurgical gradient can be generated by heating an outer circumferential portion of the tube to the high alpha or mixed alpha plus beta range while maintaining the inner surface at a lower temperature, followed by cooling of the tube.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: March 18, 1986
    Assignee: General Electric Company
    Inventors: Fletcher C. Eddens, David W. White, John L. Harmon
  • Patent number: 4576789
    Abstract: Grain refined palladium-based dental alloys contain about 70-85 weight percent palladium, 7-15 weight percent copper, 2-8 weight percent gallium, 2-15 weight percent indium, 0.2-3.0 weight percent rhenium or ruthenium and an effective amount of boron up to about 0.15% which eliminates the formation of bubbles in porcelain during the porcelain firing process. In addition, there can be an effective amount of zinc up to about 0.5 weight percent. Alternately, in lieu of zinc, the boron is added in the form of calcium boride.
    Type: Grant
    Filed: December 26, 1984
    Date of Patent: March 18, 1986
    Assignee: Jeneric Industries, Inc.
    Inventor: Arun Prasad
  • Patent number: 4575397
    Abstract: The invention relates to a rail having high resistance to wear in its head and high resistance to rupture in its foot. It is the characteristic feature of the invention that after rolling followed by heat treatment the rail has a fine pearlitic structure in the head and a martensitic annealed grain structure in the foot. The invention also includes preferred methods of heat treatment for the rail.
    Type: Grant
    Filed: October 1, 1984
    Date of Patent: March 11, 1986
    Assignee: Krupp Stahl Aktiengesellschaft
    Inventor: Wilhelm Heller
  • Patent number: 4574016
    Abstract: A steel for use in a vehicle suspension spring having a good sag-resistance comprising by weight 0.80% carbon, 1.50-2.50% silicon, 0.50-1.50% manganese, a member or members selected from a group consisting of 0.05-0.50% vanadium, 0.05-0.50% niobium and 0.05-0.50% molybdenum, the remainder being iron together with impurities. The steel may further contain a member or members selected from a group consisting of 0.0001-0.01% 0.20-1.00% chromium, and not greater than 0.0008% nitrogen.
    Type: Grant
    Filed: March 2, 1984
    Date of Patent: March 4, 1986
    Assignees: Aichi Steel Works, Ltd., Chuo Hatsujo Kabushiki Kaisha
    Inventors: Toshiro Yamamoto, Ryohei Kobayashi, Mamoru Kurimoto, Toshio Ozone
  • Patent number: 4569702
    Abstract: A precipitation hardenable copper base alloy adapted for forming in the semi-solid slurry condition consists essentially of from about 5 to about 8% by weight nickel, from about 5 to about 7.5% by weight aluminum, from about 0.5 to about 1.25% by weight silicon and the balance essentially copper. The alloy has a microstructure comprising discrete particles contained in a lower melting point matrix. The alloy is particularly suited for forging into components such as cartridge cases.
    Type: Grant
    Filed: April 11, 1984
    Date of Patent: February 11, 1986
    Assignee: Olin Corporation
    Inventors: Sankaranarayanan Ashok, John F. Breedis
  • Patent number: 4568398
    Abstract: A solid titanium alloy comprises Ti+Co+Cu+ optionally other elements. The titanium is from 95 to 40 wt. %. The liquidus is below 1300.degree. C. and the structure is of small equiaxed high-melting grains surrounded by at least 10 vol. % of low-melting material. This structure is achieved by vigorously agitating the alloy between its liquidus and solidus so as to break up dendrites, and thereby permits the alloy to be subsequently thixocast.
    Type: Grant
    Filed: March 27, 1985
    Date of Patent: February 4, 1986
    Assignee: National Research Development Corp.
    Inventors: John V. Wood, Bijan Toloui
  • Patent number: 4566915
    Abstract: A process for producing an age-hardened copper titanium alloy strip includes preparing a copper titanium alloy melt, casting it, hot-working the cast alloy, cold-working the hot-worked alloy as required, annealing the hot-worked or cold-worked alloy, solution heat-treating the annealed alloy, and then the solution heat-treated alloy is age-hardened. The alloy is annealed at a temperature of 500.degree. C. to 700.degree. C. for one to 20 hours. Its solution heat treatment is terminated before or approximately as soon as a precipitated secondary phase has formed a complete solid solution in a master phase, so that the master phase may have an average crystal grain size not exceeding 25 microns. It is preferably terminated within three minutes. The alloy has a titanium content of 2 to 6% by weight.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: January 28, 1986
    Assignee: NGK Insulators, Ltd.
    Inventors: Kazuo Ikushima, Yoshio Itoh, Toshiaki Ishihara
  • Patent number: 4565746
    Abstract: An iron core for a stationary induction apparatus, such as a transformer or reactor, comprising an alternate laminate of thin amorphous magnetic strips (21a to 21d) and silicon steel sheets (11a to 11d). It is low in electrical loss, and high in workability.
    Type: Grant
    Filed: June 29, 1983
    Date of Patent: January 21, 1986
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Iwao Hayase
  • Patent number: 4565586
    Abstract: This invention is directed to the treatment of copper beryllium alloys, and to articles and parts made therefrom, containing special small amounts of beryllium and cobalt, e.g., about 0.05% to about 0.5% beryllium and about 0.05% to about 2% cobalt, which imparts to these alloys a superior combination of stress relaxation resistance, formability, ductility, conductivity and strength by the process of solution annealing, cold working at least about 50% or at least about 70% or 90% or more and age hardening.
    Type: Grant
    Filed: June 22, 1984
    Date of Patent: January 21, 1986
    Assignee: Brush Wellman Inc.
    Inventors: Nathan L. Church, W. Raymond Cribb, John C. Harkness
  • Patent number: 4564402
    Abstract: Disclosed is a method for preventing hydrogen-induced disbonding of austenitic stainless steel cladding, which is made on a low alloy steel, in a reactor vessel which has been used in a high-temperature and high-pressure hydrogen atmosphere. The clad steel is cooled from its operating temperature to a temperature which is not lower than 100.degree. C. Then, the clad steel is maintained at a temperature between said temperature which is not lower than 100.degree. C. and a postweld heat treatment so as to effect hydrogen degassing treatment. Thereafter, the clad steel is further cooled.
    Type: Grant
    Filed: August 21, 1984
    Date of Patent: January 14, 1986
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Norio Morishige, Ryoichi Kume
  • Patent number: 4561908
    Abstract: Vehicle suspension parts especially parts which may be subjected to temperatures as low as -50.degree. C. are made by forging them from a steel of the following composition: 0.35 to 0.45% by weight carbon, less than 0.5% by weight silicon, 0.6 to 0.9% by weight manganese, 0.7 to 1.1% by weight chromium, 0.25 to 0.45% by weight molybdenum, 1.6 to 2.1% by weight nickel, the balance being substantially iron and the usual impurities.
    Type: Grant
    Filed: March 2, 1983
    Date of Patent: December 31, 1985
    Assignee: Berchem & Schaberg GmbH
    Inventor: Rutger Berchem
  • Patent number: 4559200
    Abstract: A copper alloy excellent in general properties such as heat resistance, electric and heat conductivity and mechanical strength and suitable for use as materials for lead frames of electronic parts, heat exchanger fins, or the like can be obtained by optimizing the Fe and Ti contents and proportions of a Cu-Fe-Ti ternary alloy and adding thereto a suitable amount of one or more members selected from the group consisting of Mg, Sb, V Misch metal, Zr, In, Zn, Sn, Ni, Al, and P.
    Type: Grant
    Filed: August 7, 1984
    Date of Patent: December 17, 1985
    Assignee: Mitsui Mining and Smelting Company, Ltd.
    Inventors: Syuichi Yamasaki, Hiroshi Yamaguchi, Yousuke Taniguchi
  • Patent number: 4557704
    Abstract: Composite turbine shaft includes a ceramic shaft and a metal shaft, both ends being butt-joined by brazing wherein a center void is provided in the ceramic shaft end so as to secure good heat insulation as well as strong junction even under the difference in thermal expansion between the ceramic shaft and the metal shaft.
    Type: Grant
    Filed: October 31, 1984
    Date of Patent: December 10, 1985
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Masaya Ito, Seiji Mori, Noboru Ishida
  • Patent number: 4555272
    Abstract: A predominately beta phase copper base alloy which is adapted for forming in a semi-solid slurry condition. The alloy has a microstructure comprising discrete particles within a lower melting point matrix and consists essentially of from about 9% to about 10.5% by weight aluminum, at least about 10% by weight nickel and the balance essentially copper. In accordance with an alternative embodiment the nickel can be replaced on a one for one basis by iron within certain limits. The alloys are processed by chill casting with a cooling rate throughout the section of the casting comprising at least about 10.degree. C./sec. The alloys as-cast or when reheated to a semi-solid exhibit a microstructure suitable for press forging.
    Type: Grant
    Filed: April 11, 1984
    Date of Patent: November 26, 1985
    Assignee: Olin Corporation
    Inventors: Sankaranarayanan Ashok, John F. Breedis
  • Patent number: 4551182
    Abstract: Disclosed is a process for producing titanium-containing cold rolled steel sheets and strips which can stand very severe press forming, which process comprising hot rolling, coiling at a temperature not lower than 700.degree. C., cold rolling and continuous annealing at a temperature, from 700.degree. to 900.degree. C., for 20 seconds to 2 minutes.
    Type: Grant
    Filed: October 27, 1982
    Date of Patent: November 5, 1985
    Assignee: Nippon Steel Corporation
    Inventors: Osamu Akisue, Teruaki Yamada, Shigeru Ueda, Yoshikuni Tokunaga, Masato Yamada