Patents Examined by John N. Greaves
  • Patent number: 5594930
    Abstract: A brazeable aluminum material is composed of an aluminum core and a brazing agent layer consisting of a brazing agent thermally sprayed onto covering a surface of the core. A number of unmolten minute particles of the brazing agent are present in the brazing agent layer, which contains at least an aluminum-silicon alloy and/or a mixture of aluminum and silicon. Characteristic features of a method of producing the brazeable aluminum material are the steps of: preparing a powder composed of minute particles; and thermally spraying the powder onto the aluminum core in such a state that only a surface of each minute particle is molten, with a pith of the particle remaining unmolten. The powder is an Al-Si alloy and/or a mixture of Al powder and Si powder.
    Type: Grant
    Filed: October 27, 1993
    Date of Patent: January 14, 1997
    Assignee: Showa Aluminum Corporation
    Inventors: Takashi Terada, Masahiro Kojima, Taizo Morita, Katsuyuki Arakawa, Ichiro Iwai, Masakazu Furuta
  • Patent number: 5594932
    Abstract: In a method for the manufacture of an encased high critical temperature superconducting wire by the "powder in tube" method, prior to the introduction of a compressed rod of superconducting material into a silver tube, the rod is heat treated so that grains of unwanted phase are reabsorbed. The tube can be drawn more easily, and strands can be produced with a regular geometry and no defects. The wire is constituted by 15 .mu.m to 20 .mu.m thick filaments (30) with a form factor of more than 60.
    Type: Grant
    Filed: June 9, 1994
    Date of Patent: January 14, 1997
    Assignee: Alcatel Alsthom Compagnie General d'Electricite
    Inventors: Gerard Duperray, Denis Legat
  • Patent number: 5590393
    Abstract: The invention relates to a neutron-absorbing material and to its production process.This material comprises a homogeneous, boron carbide matrix 1 in which are dispersed e.g. pseudospherical, 150 to 500 .mu.m , calibrated clusters 3 of boride such as HfB.sub.2, in order to prevent the propagation of cracks F in the material and improve its thermal shock resistance.
    Type: Grant
    Filed: February 7, 1995
    Date of Patent: December 31, 1996
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Guy M. Decroix, Dominique Gosset, Bernard Kryger
  • Patent number: 5590388
    Abstract: A method of producing a molded ceramic article comprises the first step mixing powdery raw materials and a liquid additive, thereby obtaining a mixed raw material, the second step press-molding the mixed raw material obtained in the first step in a hydrostatically applied condition of pressure, thereby removing an excess of the liquid additive to obtain a preform, and the third step calcining the preform obtained in the second step to obtain a molded ceramic article. The molded ceramic article comprises, as a principal component, copper and, as essential components, Cr and Ni within composition ranges of 0.1.ltoreq.Cr<2 wt. % and 0.1.ltoreq.Ni<10 wt. % and further at least one additive component selected from the group consisting of the following composition ratios: the following composition ratios: 0<Fe<5 wt. %, 0.ltoreq.Co<5 wt. %, 0.ltoreq.Al<10 wt. %, 0.ltoreq.Ti<20 wt. %, 0.ltoreq.Mo<3 wt. %, 0.ltoreq.Si<3 wt. %, 0.ltoreq.V<3 wt. %, 0.ltoreq.Mg<1 wt. %, and 0.ltoreq.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: December 31, 1996
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Mitsuo Kuwabara, Kiyoshi Ikegami, Teruaki Yoshida, Koji Takahashi, Tamotsu Harada, Takeshi Komiyama, Fumio Hirai, Masamichi Hayashi
  • Patent number: 5590389
    Abstract: A sputtering target comprising a body of metal such as aluminum and its alloy with an ultrafine grain size and small second phase. Also described is a method for making an ultra-fine grain sputtering target comprising melting, atomizing, and depositing atomized metal to form a workpiece, and fabricating the workpiece to form a sputtering target. A method is also disclosed that includes the steps of extruding a workpiece through a die having contiguous, transverse inlet and outlet channels of substantially identical cross section, and fabricating the extruded article into a sputtering target. The extrusion may be performed several times, producing grain size of still smaller size and controlled grain texture.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: December 31, 1996
    Assignee: Johnson Matthey Electronics, Inc.
    Inventors: John A. Dunlop, Jun Yuan, Janine K. Kardokus, Roger A. Emigh
  • Patent number: 5585195
    Abstract: A metal insert at least partially embedded in a molded resin mass comprises a metal insert blank, and a substantial amount of nickel or nickel alloy granulations produced over a surface of the metal insert blank, and the size of the granulations is at most 1.0 .mu.m. The metal insert blank is treated by a first electrolytic plating process such that a substantial quantity of copper nuclei spreaded over the surface, and the copper nuclei are grown up as the nickel or nickel alloy granulations by a second electrolytic-plating process. The first electrolytic-plating process is controlled such that an average thickness of plating is from about 0.5 to about 1.0 .mu.m, and the second electrolytic-plating process is controlled such that an average thickness of plating is from about 0.5 to about 1.5 .mu.m.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: December 17, 1996
    Assignee: Shinko Electric Industries Company, Limited
    Inventor: Toshihiko Shimada
  • Patent number: 5580666
    Abstract: A multi-phase cemented ceramic article, method of making same, and the material thereof is disclosed which is useful for machining and forming of metals, including ferrous metals, titanium, aluminum and other metals. The article and its material preferably includes novel microstructures including platelets, a range of grain sizes which yields superior hardness and other characteristics, and a lower tungsten concentration within the binder phase than has been seen in the prior art. The preferred composition includes ultrafine WC, an ultrafine solid solution of (Ti, Ta, W)C, and a cobalt binder. Platelets are formed in-situ, eliminating the need to add them during manufacture for improving toughness.
    Type: Grant
    Filed: January 20, 1995
    Date of Patent: December 3, 1996
    Assignee: The Dow Chemical Company
    Inventors: Ellen M. Dubensky, Stephen D. Dunmead, Daniel F. Carroll
  • Patent number: 5581799
    Abstract: A brazeable aluminum material is composed of an aluminum core and a brazing agent layer consisting of a brazing agent thermally sprayed onto and covering a surface of the core. A number of unmolten minute particles of the brazing agent are present in the brazing agent layer, which contains at least an aluminum-silicon alloy and/or a mixture of aluminum and silicon. Characteristic features of a method of producing the brazeable aluminum material are the steps of: preparing a powder composed of minute particles; and thermally spraying the powder onto the aluminum core in such a state that only a surface of each minute particle is molten, with a pith of the particle remaining unmolten. The powder is an Al-Si alloy and/or a mixture of Al powder and Si powder.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: December 3, 1996
    Assignee: Showa Aluminum Corporation
    Inventors: Takashi Terada, Masahiro Kojima, Taizo Morita, Katsuyuki Arakawa, Ichiro Iwai, Masakazu Furuta
  • Patent number: 5580665
    Abstract: An article essentially consisting of one or more of Ti-Al intermetallic compounds is fabricated so as to have a volume ratio of voids no more than 3.5%, by preparing a mixture of materials selected from a group consisting of Ti, Ti alloys, Al, Al alloys, and Ti-Al compounds, having a composition suitable for forming a desired Ti-Al intermetallic compound, and heating said mixture so that said mixture may be sintered. Typically, the temperature and pressure for the heating or sintering process is appropriately selected so that the desired porosity may be obtained. The mechanical strength of an article according to the present invention is not only improved but is highly predictable, or, in other word, highly reliable. The fabrication costs can be reduced because the fabrication process involves only relatively low temperatures when pressing and heating the work at the same time.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: December 3, 1996
    Assignee: NHK Spring Co., Ltd.
    Inventors: Kohei Taguchi, Michihiko Ayada, Hideo Shingu
  • Patent number: 5581798
    Abstract: According to the invention there now is provided a method of producing a sintered titanium based carbonitride alloy with 3-25 weight % binder phase with extremely good properties at intermittent machining of materials difficult to machine. The method relates to the use of a raw material comprising a complex cubic carbonitride containing the main part of the metals from groups IV and V of the periodic system and carbon and nitrogen to be found in the finished alloy whereby said alloy has the composition0.86.ltoreq.X.sub.IV .ltoreq.0.970.44.ltoreq.X.sub.C .ltoreq.0.55where X.sub.IV is the molar ratio of the group IV elements of the alloy and X.sub.C is the molar ratio of carbon.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: December 3, 1996
    Assignee: Sandvik AB
    Inventors: Gerold Weinl, Rolf Oskarsson
  • Patent number: 5579532
    Abstract: A composite jet engine compressor ring is made by casting a tape reinforced with ceramic fibers, winding the cast tape around a mandrel to form an unconsolidated ring, heating the ring to drive off binder, and pressing at a high temperature to form a unitary composite ring. Compression of the ring in an axial direction during hot pressing results in a desired axial spacing between adjacent fibers. The tape is preferably cast from a mixture of titanium base metal particles and a polyisobutylene binder dissolved in an organic solvent.
    Type: Grant
    Filed: June 16, 1992
    Date of Patent: November 26, 1996
    Assignee: Aluminum Company of America
    Inventor: Jon F. Edd
  • Patent number: 5574957
    Abstract: An improved method is disclosed for encasing an object in a shell or layer of outer material. The encased object and the outer material are formed from sinterable metal or ceramic particulate material. Both the object to be encased and the shell or encasement are formed by extrusion. Novel methods are disclosed by which the object and the outer material can be simultaneously formed by co-extruding the sinterable particulate materials, or by extruding the outer layer onto a formed object using the die assembly of the invention.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: November 12, 1996
    Assignee: Corning Incorporated
    Inventors: John M. Barnard, Ronald E. Johnson, Kathleen A. Wexell
  • Patent number: 5571304
    Abstract: Oxide dispersion strengthened (ODS) Ni-base alloy foils are made directly from powders of these alloys by hot pressing. These ODS Ni-base alloy foils are characterized by having a thickness of 0.017 in. or less, and by the fact that they are fine-grained and substantially free of nitrogen and deformation induced defects. The as-pressed ODS Ni-base alloy foils are adapted for subsequent forming operations, including cold rolling. The reduction in thickness imparted in a single pass to an Ni-base alloy foil through cold-rolling was about 8%. The total reduction in thickness was about 55% based upon a plurality of such passes. For reductions in thickness greater than 20%, annealing is employed for stress relief.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: November 5, 1996
    Assignee: General Electric Company
    Inventors: Ann M. Ritter, Melvin R. Jackson, Paul L. Dupree, Donald N. Wemple, Jr.
  • Patent number: 5568653
    Abstract: According to the invention there now is provided a method of producing a sintered titanium based carbonitride alloy with 3-25 weight-% binder phase with extremely good properties at semifinishing operations at turning. The method relates to the use of a raw material consisting of a complex cubic carbonitride comprising the main part of the metals from groups IV and V of the periodic system and carbon and nitrogen to be found in the finished alloy whereby said alloy has the composition0.85.ltoreq.X.sub.IV .ltoreq.0.990.58.ltoreq.X.sub.C .ltoreq.0.69where X.sub.IV is the molar ratio of the group IV elements of the alloy and X.sub.C is the molar ratio of carbon.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: October 22, 1996
    Assignee: Sandvik AB
    Inventors: Gerold Weinl, Rolf Oskarsson
  • Patent number: 5564066
    Abstract: To manufacture a reflector formed by a reflective metallic layer on a metallic matrix composite support, a metallic layer having a reflective surface whose shape is at least approximately identical to the required geometrical shape is disposed on a mold surface having a geometrical shape complementary to the required geometrical shape of the reflector. Fibers to constitute the composite support are draped on the metallic layer. They are metallized by the metallic or intermetallic material to form the metallic matrix. This layer and the metallized fibers are subjected to temperature and pressure conditions adapted to press the reflective surface strongly against the mold surface and to cause diffusion welding of the layer with the metallized fibers and of the metallized fibers with themselves so as to integrate the layer to the composite support during consolidation of the latter.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: October 8, 1996
    Assignee: Societe Nationale Industrielle et Aerospatiale
    Inventor: Henri Abiven
  • Patent number: 5561830
    Abstract: According to the invention there now is provided a method of producing a sintered titanium based carbonitride alloy with 325 weight-% binder phase with extremely good properties at extremely fine machining with high cutting speeds and low feeds. The method relates to the use of a raw material comprising a complex cubic carbonitride containing the main part of the metals from groups IV and V of the periodic system and carbon and nitrogen to be found in the finished alloy whereby said alloy has the composition0.87.ltoreq.X.sub.IV .ltoreq.0.990.66.ltoreq.X.sub.C .ltoreq.0.76where X.sub.IV is the molar ratio of the group IV elements of the alloy and X.sub.C is the molar ratio of carbon.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: October 1, 1996
    Assignee: Sandvik AB
    Inventors: Gerold Weinl, Rolf Oskarsson
  • Patent number: 5561831
    Abstract: According to the invention there now is provided a method of producing a sintered titanium based carbonitride alloy with 3-25 weight-% binder phase with extremely good properties at fine to medium coarse milling. The method relates to the use of a raw material consisting of a complex cubic carbonitride comprising the main part of the metals from groups IV and V of the periodic system and carbon and nitrogen to be found in the finished alloy whereby said alloy has the composition0.89.ltoreq.X.sub.IV .ltoreq.0.970.52.ltoreq.X.sub.C .ltoreq.0.61where X.sub.IV is the molar ratio of the group IV elements of the alloy and X.sub.C is the molar ratio of carbon.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: October 1, 1996
    Assignee: Sandvik AB
    Inventors: Ake Ostlund, Rolf Oskarsson
  • Patent number: 5561827
    Abstract: A nickel-base superalloy article has a coating having a composition, in weight percent, of from about 10 to about 20 percent cobalt, from about 14 to about 25 percent chromium, from about 2 to about 12 percent aluminum, from 0 to about 0.2 percent yttrium, from about 0.001 to about 3 percent boron, from about 1 to about 10 percent silicon, balance nickel and incidental impurities. The coating is preferably applied by mixing together two powders, one with a higher solidus temperature and one with a lower solidus temperature, whose net composition is that of the coating. The powder mixture is compacted with a binder, applied to a surface of the article, and heated to a temperature above the lower solidus temperature.
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: October 1, 1996
    Assignee: General Electric Company
    Inventors: Jim D. Reeves, David E. Budinger, Robert A. Anderson
  • Patent number: 5554338
    Abstract: The invention relates to a method of preparing a composite sintered body having inner and outer portions fitted with each other. The method includes the steps of: (a) preparing an inner powder compact; (b) preparing an outer powder compact; (c) fitting the inner and outer powder compacts with each other so as to prepare a composite powder compact; and (d) sintering the composite powder compact so as to prepare the composite sintered body. The inner and outer powder compacts are respectively selected such that, during the step (d), the amount of growth of the inner powder compact becomes greater than that of the outer powder compact. Each of the inner and outer composite powder compacts is made of one member selected from the group consisting of a wax-type segregation prevention powder mixture and a metal-soap-type segregation prevention powder mixture. At least one of the inner and outer composite powder compacts is made of the wax-type segregation prevention powder.
    Type: Grant
    Filed: April 18, 1995
    Date of Patent: September 10, 1996
    Assignees: Nissan Motor Co., Ltd., Hitachi Powdered Metals Co., Ltd.
    Inventors: Hiroshi Sugihara, Hiroyuki Ishikawa, Tsutomu Uemura, Akira Fujiki, Hiromasa Imazato, Shinichi Umino
  • Patent number: 5552108
    Abstract: According to the invention there now is provided a method of producing a sintered titanium based carbonitride alloy with 3-25 weight-% binder phase with extremely good properties at extreme fine machining when turning with high cutting rates. The method relates to the use of a raw material comprising a complex cubic carbonitride containing the main part of the metals from groups IV and V of the periodic system and carbon and nitrogen to be found in the finished alloy whereby said alloy has the composition0.86.ltoreq.X.sub.IV .ltoreq.0.990.74.ltoreq.X.sub.C .ltoreq.0.83where X.sub.IV is the molar ratio of the group IV elements of the alloy and X.sub.C is the molar ratio of carbon.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: September 3, 1996
    Assignee: Sandvik AB
    Inventors: Gerold Weini, Rolf Oskarsson