Patents Examined by E. L. Weise
  • Patent number: 3947266
    Abstract: An air-meltable, castable, workable alloy resistant to corrosion in sulfuric acid over a wide range of acid strengths. The alloy consists essentially of between about 28.59 and about 36.72% by weight nickel, between about 26.33 and about 30.15% by weight chromium, between about 3 and about 4.1% by weight molybdenum, between about 3 and about 4.5% by weight copper, between about 3 and about 4% by weight manganese, up to about 0.5% by weight cobalt, up to about 0.60% by weight silicon, up to about 0.07% by weight carbon, up to about 1% by weight tantalum, up to about 1% by weight titanium, up to about 2.38% by weight niobium, up to about 0.010% by weight boron, up to about 0.6% by weight of a rare earth component selected from the group consisting of cerium, lanthanum and misch metal, up to about 0.15% by weight nitrogen, and the balance essentially iron. The sum of the chromium content and 0.56 times the niobium content is between about 27 and about 31% by weight.
    Type: Grant
    Filed: May 17, 1974
    Date of Patent: March 30, 1976
    Assignee: Carondelet Foundry Company
    Inventor: John H. Culling
  • Patent number: 3947254
    Abstract: A method of forming a high-temperature abrasion-resistant hard facing or coating on a ferrous metal substrate by employing an aluminothermic reduction reaction. The resultant article has a hard facing layer containing from 2 to 8 percent boron. Hard faced composite articles made by the invented method, such as sintering machine crash decks, coke pusher ram shoes and grizzly bars are also disclosed.
    Type: Grant
    Filed: September 9, 1974
    Date of Patent: March 30, 1976
    Assignee: United States Steel Corporation
    Inventors: Robert H. Kachik, Arthur J. Pignocco
  • Patent number: 3945556
    Abstract: A solder alloy for use in automated soldering of workpieces by application thereto of liquid solder from a molten reservoir. The alloy consists essentially of from about 50 to 57.5% by weight tin, from about 1.5 to 4% by weight antimony, with the balance being substantially lead. The alloy is preferably further characterized in displaying a solidus-to-liquidus temperature range no greater than that of a 60/40 weight ratio tin/lead solder.
    Type: Grant
    Filed: February 25, 1975
    Date of Patent: March 23, 1976
    Assignee: Alpha Metals, Inc.
    Inventor: Howard H. Manko
  • Patent number: 3937628
    Abstract: Solid-solution strengthened austenitic alloys consisting of, in weight percent, no more than 0.1 % carbon, from 4 (%C) to 1 % titanium and/or niobium (alone or in combination), no more than 75 % cobalt, no more than 26 % chromium, from 8 % to 40 % tungsten, wherein the amount of 1/5 (%Co) + (%Cr) + (%W) is in the range from 38 % to 46 %, with or without at least one element from the group consisting of no more than 0.1 % boron, no more than 0.5 % zirconium, no more than 0.5 % yttrium and no more than 1 % hafnium, and the balance essentially nickel except for impurities.These alloys possess excellent high-temperature strength as well as good workability.
    Type: Grant
    Filed: April 3, 1974
    Date of Patent: February 10, 1976
    Assignee: Hitachi Metals, Ltd.
    Inventors: Rikizo Watanabe, Yositaka Chiba
  • Patent number: 3936295
    Abstract: The invention comprises bearing members having a coated wear surface applied by plasma-spraying an aggregate of particles thereon consisting of nickel-aluminum particles, nickel-molybdenum particles, tungsten carbide particles, and intermetallic alloy particles to form a high temperature, oxidation resistant, wear resistant, and scuff resistant coating. Alloying of the constituents in the final coating is desired and is achieved by encapsulating both the aluminum and molybdenum particles with nickel (alternatively the nickel-aluminum may be in the form of a bonded aggregate), by sintering the tungsten carbide in a matrix of cobalt, and by alloying nickel-cobalt, carbon, silicon, chromium, boron, and iron into an intermetallic alloy to form an aggregate of four types of particles for plasma-spraying onto the wear surface.
    Type: Grant
    Filed: February 15, 1974
    Date of Patent: February 3, 1976
    Assignee: Koppers Company, Inc.
    Inventors: John Edward Cromwell, Glenn Francis Hyde
  • Patent number: 3933486
    Abstract: An electrical contact material obtained through internally oxidizing a silver alloy which is the solid solution with 5 to 20 weight percent of one or more of the solute metal elements selected from tin, zinc and antimony and which contains 0.01 to 1.0% weight percent of bismuth. The silver alloy may also include up to 0.5 weight percent of ferrous metal or metals.
    Type: Grant
    Filed: May 30, 1974
    Date of Patent: January 20, 1976
    Assignee: Chugai Denki Kogyo Kabushiki-Kaisha
    Inventor: Akira Shibata
  • Patent number: 3933485
    Abstract: An alloy for composite electrical contact materials which is composed of 5 to 10 weight percent of tin and 1.0 to 6 weight percent of indium, the balance being silver, said alloy being subjected to an internal oxidation. The alloy may contain, when added by one or more other solute metal elements selected from zinc, antimony, lead and bismuth, as much as 6 to 15 weight percent of tin and said other solute metal elements in total in which the latter are less than 30 percent of the former. The alloy may also comprise up to 0.5 weight percent of ferrous or alkali earth metals.
    Type: Grant
    Filed: May 29, 1974
    Date of Patent: January 20, 1976
    Assignee: Chugai Denki Kogyo Kabushiki-Kaisha
    Inventor: Akira Shibata
  • Patent number: 3932144
    Abstract: A coated metallic sheet adapted for use in making a can for foodstuff or other container. This sheet can be made by coating, upon a material sheet, a composition of a resol-type thermosetting phenolformaldehyde resin and a bisphenol "A" type epoxy resin. In said phenol-formaldehyde resin, the ratio by weight of orthocresol to phenol is between 60:40 and 10:90. Said epoxy resin has a mean molecular weight of 800 or more and is used in an amount of 0.2 to 1.5 part by weight per 1 part by weight of said phenol-formaldehyde resin in said composition. This composition used for the sheet displays an excellent adhesiveness particularly with respective to the use of a polyamide type adhesive.
    Type: Grant
    Filed: December 4, 1974
    Date of Patent: January 13, 1976
    Assignees: Nippon Steel Corporation, Toagosei Chemical Industry Co., Ltd.
    Inventors: Takashi Matsubara, Yuko Takeuchi, Tadashi Tanaka, Tatsuro Obi, Akio Watanabe
  • Patent number: 3932143
    Abstract: A building product, such as a roofing shingle or the like, is provided with flame resistance and protected against actinic degradation, and fouling by algae and micro-organisms by flame-spraying a metal coating on at least one side of the product and thereafter applying a second flame-sprayed coating, of copper, on the first layer to cover completely at least the one side of the product.
    Type: Grant
    Filed: May 23, 1974
    Date of Patent: January 13, 1976
    Assignee: Kennecott Copper Corporation
    Inventors: David W. Marshall, William R. O'Day, Jr.
  • Patent number: 3930849
    Abstract: Ag-CdO type material suitable for use as an electrical contact material in a switching device such as a circuit breaking device is disclosed. The material contains Ag and CdO with an oxide of Sn and an oxide of an additive metal selected from Mg, Ca, or mixtures of oxides of such additive metals. The additive metal appears to form an oxide of the metal earlier during oxidation of the material than either the Sn or Cd thereby acting as a nucleating site for the formation of the oxides of the Sn and Cd. The oxide of the metals appears to tend to grow as a mixture of the oxides of the additive metal, Cd and Sn. This material has good high temperature properties, undergoes oxidation of the oxidizable constituents at a high rate and has a fine oxide particle size.The method of making the Ag-CdO type material.
    Type: Grant
    Filed: May 24, 1973
    Date of Patent: January 6, 1976
    Assignee: P. R. Mallory & Co., Inc.
    Inventors: Richard H. Krock, Yuan-Shou Shen
  • Patent number: 3930902
    Abstract: Relative sliding members comprising as materials in combination a nitrified sintered alloy and an alloy cast iron, chemical components of which are well selected in percentage so as to provide better wear resistance and machinability.
    Type: Grant
    Filed: January 31, 1975
    Date of Patent: January 6, 1976
    Assignee: Nippon Piston Ring Co., Ltd.
    Inventors: Takeshi Hiraoka, Shigeru Urano
  • Patent number: 3930807
    Abstract: The present invention relates to a plastic molding having satin finish type metallic luster. More particularly, it provides a molding of high accuracy and good appearance. The plastic molding of the present invention is produced by first applying satin finishing to the surface of the molding, providing a conductive coating thereon, applying polishing treatment on the surface of the coating, and forming a metal film thereon by metal plating.
    Type: Grant
    Filed: April 24, 1974
    Date of Patent: January 6, 1976
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsumi Kobayashi, Tadashi Ito, Yoshihide Kamei, Teruhisa Oda, Toshio Matsuki