Patents Examined by W. Stallard
  • Process for producing fine powdery metal
    Patent number: 4383852
    Abstract: In a generally elongated reaction tube at an elevated temperature, a reducing gas stream is caused to flow along the axis of the reaction tube and a metal-halide gas stream diluted with an inert carrier gas is caused to flow in the same direction as but at a different velocity relative to the reducing gas stream. The two gas streams contact each other in a laminar manner and form an unstable interface region therebetween wherein the metal halide gas is reduced to form fine metal particles with uniform particle size.
    Type: Grant
    Filed: March 4, 1982
    Date of Patent: May 17, 1983
    Assignees: Toho Aen Kabushiki Kaisha, Akinori Yoshizawa
    Inventor: Akinori Yoshizawa
  • Knives for food slicing machines
    Patent number: 4383871
    Abstract: There is described a method of producing steel machine knives, e.g. of stainless steel, which are through hardened and can be polished to give a consistent visually acceptable surface. Blanks are initially machined, gradually heated to a temperature of the order of 1000.degree. C., and press-form quenched.
    Type: Grant
    Filed: October 23, 1980
    Date of Patent: May 17, 1983
    Assignee: W.A. Tyzack & Company Limited
    Inventors: Barry Harding, George W. Miles, Barry J. Cowan
  • Apparatus and method for cutting holes in steel plates
    Patent number: 4383870
    Abstract: Single or ganged cutting torches for steel plates preheat the center of each hole to be cut prior to any displacement of the torches. On completion of the preheating, the torches are laterally repositioned in correspondence with the common radius of the holes to be cut. Simultaneously, the torches begin to cut and motive means initiates and maintains circular movement of each of the torches commensurate with the circumference of the holes to be cut. Positioning means for locating each of the torches in the X-axis and for translating the torches en masse in the Y-axis are disclosed. Means for accommodating bowing of the steel plate along with means for setting the torches to cut various diameter holes at any bevel angle are described.
    Type: Grant
    Filed: September 18, 1981
    Date of Patent: May 17, 1983
    Inventor: Clyde W. Creech
  • Gear and rack portable torch drive
    Patent number: 4382583
    Abstract: A portable torch support and guide wherein a torch mounting carriage is advanceable along a guide track by a drive gear and its actuator on the carriage, the drive gear being in engagement with a gear rack along said guide track. Two or more modules of track can be interconnected in alignment such that the carriage is advanced along a desired distance.
    Type: Grant
    Filed: February 18, 1981
    Date of Patent: May 10, 1983
    Inventor: Franklin W. Domres
  • Method of making one-piece tubular axle blanks and the produced axle blanks
    Patent number: 4380480
    Abstract: A method for the economical manufacture of one-piece tubular axle blanks of the type having a center portion with journals at both ends. The method involves quenching a length of a preheated steel tube followed by tempering and then swaging at both ends by forging or hammering. The areas of transition between the center portion and the respective journals are thickened by upsetting, and the ends of the axle blank are subsequently locally heat treated by annealing.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: April 19, 1983
    Assignee: Vallourec
    Inventors: Jean-Jacques Delfino, Maurice Prevot
  • Foils of brittle alloys
    Patent number: 4380479
    Abstract: Nickel based brazing alloys containing embrittling additives are made by depositing a powder blend on a nickel substrate and roll compacting to form an alloy foil having the desired metallurgical content.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: April 19, 1983
    Assignee: GTE Products Corporation
    Inventor: Brian C. Coad
  • Method and equipment for dividing slabs into predetermined widths
    Patent number: 4379002
    Abstract: In the process of conveying a slab from continuous casting or large ingot casting equipment by means of a conveyance table comprising conveyance rollers, the slab is stopped on the table and raised therefrom and, at the raised position, the slab is divided lengthwise thereof by gas cutting into at least two. The divided slabs are individually transferred to the downstream, where slags formed on the lower end edge of the cut surface of each divided slab are continuously removed.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: April 5, 1983
    Assignee: Kawasaki Steel Corporation
    Inventors: Sadayuki Saito, Hiroji Moriwaki, Kazuya Higuchi
  • Preparation of acicular ferromagnetic metal particles consisting essentially of iron
    Patent number: 4378240
    Abstract: A process for the preparation of acicular ferromagnetic metal particles, consisting essentially of iron, by reducing acicular iron oxides and/or iron oxide hydroxides, which are either pure or are modified with conventional foreign metal ions, by means of a gaseous reducing agent in a fluidized bed furnace in which a stirrer is provided immediately above the fluidizing grid.
    Type: Grant
    Filed: May 28, 1981
    Date of Patent: March 29, 1983
    Assignee: BASF Aktiengesellschaft
    Inventors: Hansjoerg Siegle, Hans H. Reich, Horst Autzen, Werner Steck, Werner Loeser, Eckhard Hetzel, Manfred Ohlinger
  • Hadfield's steel containing 2% vanadium
    Patent number: 4377422
    Abstract: An abrasion resistant heat treated austenitic manganese steel containing about 1% carbon, 13% manganese and 1.2-2.0% vanadium. The steels are heat treated so as to disperse austenitic grain boundary vanadium carbides uniformly throughout the matrix.
    Type: Grant
    Filed: September 8, 1981
    Date of Patent: March 22, 1983
    Assignee: Queen's University at Kingston
    Inventors: William B. Mackay, Reginald W. Smith
  • Self-propelling bevel fusion-cutting machine
    Patent number: 4377276
    Abstract: A self-propelling bevel fusion-cutting machine for beveling pipes comprises a machine main body which holds a fusion-cutter, such as a burner, for effecting the bevel fusion-cutting of the end face of a pipe, traveling guide rollers which roll on the pipe end face, and outer roller which rolls circumferentially on the outer peripheral surface of the pipe, and an inner roller which rolls circumferentially on the inner peripheral surface of the pipe. The machine main body is movable along the pipe end face by means of these rollers. The outer or inner roller is removably pressed against the peripheral surface of the pipe and this roller or the other roller is connected to a drive source mounted on the machine main body so as to be thereby driven for rotation.
    Type: Grant
    Filed: November 30, 1981
    Date of Patent: March 22, 1983
    Assignee: Koei Machine Co., Ltd.
    Inventor: Hiroshi Kataoka
  • Stainless steel short fiber and process for preparing the same
    Patent number: 4377409
    Abstract: A columnar stainless steel short fiber having a diameter of 2 to 20 .mu.m. and an aspect ratio of the length to the diameter of 1 to 50. The short fiber is prepared by heat-treating a stainless steel fiber for adjusting the growth of crystal grains and subjecting the heat-treated fiber to intergranular selective corrosion in an acidic solution. The short fiber is useful as a material of sintered metallic filters, and sintered compacts of the short fiber have high porosity, uniform pore size, excellent mechanical strength and small pressure loss.
    Type: Grant
    Filed: June 25, 1981
    Date of Patent: March 22, 1983
    Assignee: Nippon Seisen Co., Ltd.
    Inventor: Hideomi Ishibe
  • Highly adhesive coatings for beryllia
    Patent number: 4376806
    Abstract: Highly adhesive composites with an active tin alloy are obtained as coating on beryllia by depositing tin with, e.g. vanadium on beryllia, and heating in a carbon monoxide atmosphere of up to 1000.degree. C.
    Type: Grant
    Filed: October 27, 1981
    Date of Patent: March 15, 1983
    Assignee: Advanced Technology, Inc.
    Inventors: Josef Intrater, Gene Bertoldo
  • Method for inducing superplastic properties in nonsuperplastic metal and alloy powders
    Patent number: 4376660
    Abstract: A method for inducing superplastic properties in nonsuperplastic materials, metals or alloys, by mixing in powder form, the nonsuperplastic material with a second alloy having superplastic characteristics. The powder mixture is compacted into a billet and superplastically formed. The grain boundaries of the nonsuperplastic material are subsequently restored by heating the formed billet to a temperature slightly below the melting point of the second alloy.
    Type: Grant
    Filed: March 24, 1982
    Date of Patent: March 15, 1983
    Assignee: The Bendix Corporation
    Inventor: Kamal E. Amin
  • Alternate method for inducing superplastic properties in nonsuperplastic metal and alloy powders
    Patent number: 4375994
    Abstract: The invention is a method for inducing superplastic properties in nonsuperplastic metal and metal alloy powders by adding to such powders a small quantity of pure metal capable of alloying with the nonsuperplastic material to form a eutectic having superplastic properties. The powder is initially heated to the melting temperature of the desired eutectic to form the superplastic eutectic at the grain boundaries of the nonsuperplastic material. After forming, the powder is heat soaked to further dissolve the pure metal, destroying the formed eutectic and restoring the natural grain boundaries of the nonsuperplastic material.
    Type: Grant
    Filed: March 24, 1982
    Date of Patent: March 8, 1983
    Assignee: The Bendix Corporation
    Inventor: Kamal E. Amin
  • Constant energy rate forming
    Patent number: 4375375
    Abstract: An improved method for hot working materials previously considered to be difficult or impossible to hot work is described. The method consists of varying the deformation conditions in order to achieve an essentially constant energy input, to the material being worked, on a time basis.
    Type: Grant
    Filed: October 30, 1981
    Date of Patent: March 1, 1983
    Assignee: United Technologies Corporation
    Inventors: Anthony F. Giamei, Robert E. Doiron
  • Metal coatings or metal sandwiches with boron nitride or titanium diboride substrates
    Patent number: 4374903
    Abstract: Substrates such as boron nitride and titanium diboride and the like joined to other metal or metal sandwiches useful as resistance elements.
    Type: Grant
    Filed: May 28, 1981
    Date of Patent: February 22, 1983
    Assignee: Advanced Technology, Inc.
    Inventors: Josef Intrater, Gene Bertoldo
  • Method of removing cracks, and multiple-shape torch for carrying out the method
    Patent number: 4373969
    Abstract: The invention concerns a method of selective crack removal from ingots and slabs, and the torch for carrying out the method.The method comprises burning surface impurities with a jet of oxygen, the strength and shape of which vary continually according to the characteristics of the defect to be removed. The torch for carrying out the method has an oxygen nozzle which is divided into a plurality of parallel pipes, the supply of gas to the pipes being controlled individually.The method allows cracks to be removed economically and rapidly from metallurgical products such as ingots and slabs.
    Type: Grant
    Filed: July 30, 1981
    Date of Patent: February 15, 1983
    Assignee: Etablissements Somalor-Ferrari "Somafer"
    Inventor: Michel Donze
  • Method of manufacture of high performance gears
    Patent number: 4373973
    Abstract: A method for forming gear teeth of a high performance gear is accomplished by shaping the carburized gear tooth surface while the gear blank is held at a uniform temperature in the metastable austenitic condition above the start of the martensitic transformation temperature of the carburized case and then allowed to air cool so that the gear tooth surface will be transformed into very fine grain martensite.
    Type: Grant
    Filed: November 16, 1981
    Date of Patent: February 15, 1983
    Assignee: International Harvester Co.
    Inventors: Raymond A. Cellitti, John A. Halgren
  • Cold rolled, ductile, high strength steel strip and sheet and method therefor
    Patent number: RE31221
    Abstract: Cold reduced, annealed steel strip and sheet stock having 0.2% yield strength of 45 to 65 ksi with an elongation of at least 25%, or having a yield strength of at least 90 ksi with an elongation of at least 10%. A low carbon steel (0.02-0.10% C) typical of rimmed or drawing steel analysis is preferably vacuum degassed, and 0.02% to 0.18% columbium is added. The casting is hot rolled, coiled not higher than 1300.degree. F., cold reduced 40% to 70%, and annealed at low temperature for a time sufficient to restore desired ductility without substantially decreasing yield strength.
    Type: Grant
    Filed: May 6, 1981
    Date of Patent: April 26, 1983
    Assignee: Armco Inc.
    Inventors: James A. Elias, deceased, John R. Newby, Marvin B. Pierson
  • Two-claw hammer or similar article
    Patent number: D269061
    Type: Grant
    Filed: August 30, 1978
    Date of Patent: May 24, 1983
    Inventor: Dana Peterson