Patents Examined by Gus T. Hampilos
  • Patent number: 4499707
    Abstract: A method and apparatus for baling a tow of textile filaments, in which when a container has been filled, the tow is cut automatically in such a way that the end of the cut tow connected to the tow in the container falls on the side of the container, the other end of the cut tow forming the beginning of the tow for the new container, being constantly gripped during the filling of the new container, at a location which is beyond the maximum oscillating portion of the tow laying guide. The gripped end is released after the new container has been completely filled.
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: February 19, 1985
    Assignee: Rhone-Poulenc-Textile
    Inventors: Gilles Desjobert, Andre Jaillet
  • Patent number: 4476916
    Abstract: Method for investment casting of metal matrix composites by vacuum infiltration using a ceramic mold formed directly on the pattern.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: October 16, 1984
    Inventor: Henry J. Nusbaum
  • Patent number: 4473105
    Abstract: A process for casting a material comprising a coolant application device comprising a fluidized bed cooling system. A control system for the fluidized bed cooling system determines the most upstream position at which the fluidized bed contacts the material being cast. The control system is adapted to adjust the pressure differential between the gas used to fluidized the bed of particles and an opposing gas flow. The casting system may be a continuous or semi-continuous one and preferably employs an electromagnetic mold.
    Type: Grant
    Filed: June 10, 1981
    Date of Patent: September 25, 1984
    Assignee: Olin Corporation
    Inventor: Michael J. Pryor
  • Patent number: 4465119
    Abstract: A method for casting material melted by arc discharge and an arc melting apparatus useful with a precision casting machine, the invention is practiced by initiation of an arc discharge at an arc current lower than the steady state current normally used for arc melting, thereby to prevent starting shock. Current level is subsequently increased in a rapid and regular manner to a steady state current for melting in a stable manner the material which is to be cast. The apparatus of the invention includes a small and compact arc power source provided with apparatus for controlling the arc current which is applied to the material to be melted. When utilized with a precision casting apparatus, the invention improves the manufacture of artificial teeth, accessories, industrial mechanical parts and the like.
    Type: Grant
    Filed: September 1, 1981
    Date of Patent: August 14, 1984
    Inventors: Yoshimasa Kidowaki, Akira Yonemoto
  • Patent number: 4465117
    Abstract: An ingot mold with mold wall and stool shields and the method of installing the mold wall and stool shields to the ingot mold and stoll. The mold wall shield comprises at least two portions connected by a bend. The mold wall shield and the stool shield can be multi-layered to provide a thin envelope or layer of air between the parallel layers. The shields are nailed to the mold or stool by an explosion actuated hammer. The mold wall shield is installed with the bend near the intersection between the mold and the stool. The shields are made of similar material to that being cast and melt due to the heat of the molten metal in the mold.
    Type: Grant
    Filed: July 20, 1981
    Date of Patent: August 14, 1984
    Assignee: Republic Steel Corporation
    Inventor: Charles G. Mason
  • Patent number: 4461336
    Abstract: The flow of molten metal from the orifice of a tundish to a continuous casting mold is stopped by a chill plug. The chill plug is attached to an L-shaped arm which is connected to a pivotable arm. The pivotable arm is actuated by a piston-cylinder attached to a bracket on the tundish.
    Type: Grant
    Filed: August 26, 1981
    Date of Patent: July 24, 1984
    Inventor: Victor Remeika
  • Patent number: 4458741
    Abstract: A method for forming metal articles, such as rods and tubes by aspiration casting is provided in which a hollow frangible mold, such as a glass tube, is immersed at one end in a molten metal bath, a vacuum is applied to the other end controlled with respect to temperature of the molten metal so as to substantially fill the mold with a minimum of turbulence, the filled mold is withdrawn from the metal and the frangible mold is shattered to remove it from the metal article formed within.
    Type: Grant
    Filed: February 3, 1978
    Date of Patent: July 10, 1984
    Assignee: Cabot Corporation
    Inventors: Sankar P. Iyer, Roy D. Lewis, H. Joseph Klein, William C. Hord, James C. Ailor
  • Patent number: 4457356
    Abstract: In a continuous casting mold which comprises: a plurality of ultrasonic vibrators fitted to the outer surface of each of the side walls of the mold along at least one straight line at prescribed intervals in the axial direction of the mold; the plurality of ultrasonic vibrators producing vibrating waves of identical wave lengths in the axial direction of the mold; the prescribed intervals being equal to half the wave length of the vibration waves generated in the axial direction of the mold; the improvement wherein the phases of the vibration waves of two adjacent ones of the plurality of ultrasonic vibrators are deviated by 180.degree. from each other.
    Type: Grant
    Filed: August 13, 1981
    Date of Patent: July 3, 1984
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Nobuhisa Hasebe, Hiroshi Kawada, Isamu Komine
  • Patent number: 4456051
    Abstract: A method for manufacturing a scroll for use in a scroll type fluid displacement apparatus is disclosed.
    Type: Grant
    Filed: March 2, 1982
    Date of Patent: June 26, 1984
    Assignee: Sanden Corporation
    Inventor: Seiichi Hukuhara
  • Patent number: 4454908
    Abstract: A continuous casting method in which molten metal is continuously poured into a moving mould cavity formed between a rotary casting wheel having a peripheral casting groove and a moving belt partially covering the peripheral casting groove. The cast billet which has been solidified at least outer surfaces thereof is continuously pulled out from the moving mould cavity by means of pinch rollers which are rotated at a peripheral speed greater than that of the rotary casting wheel.
    Type: Grant
    Filed: February 24, 1982
    Date of Patent: June 19, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Hideyo Kodama, Eisuke Niyama, Munehiro Endo, Tomoaki Kimura
  • Patent number: 4453586
    Abstract: To produce frozen casting moulds or core boxes the binder is cooled till freezing at least partly before or during the moulding process. This allows the production rate to be increased to such a level that the working rate of automatic machines for the production of casting moulds and core boxes can be fully obtained.
    Type: Grant
    Filed: February 17, 1982
    Date of Patent: June 12, 1984
    Assignee: Dansk Industri Syndikat A/S
    Inventors: Emil Jespersen, Bakshi B. Singh
  • Patent number: 4452297
    Abstract: A multi-strand process is provided for casting molten materials into ingots of desired shape. The process uses two inductors for receiving the molten material and applying the first and second electromagnetic force fields to form the molten material into the ingots. The inductors are located adjacent each other so that the first and second force fields interact with each other. A first device is associated with one of the inductors for applying a first alternating current at a first desired frequency to an associated inductor to generate the first magnetic force field. A second device is associated with the other of the inductors for applying a second alternating current at a second desired frequency to generate the second magnetic force field. The second frequency is set to a desired value in relation to the first frequency in order to control the first and second resulting containment currents circulating in the molten material.
    Type: Grant
    Filed: March 5, 1982
    Date of Patent: June 5, 1984
    Assignee: Olin Corporation
    Inventors: Gary L. Ungarean, John C. Yarwood, Peter J. Kindlmann, Derek E. Tyler
  • Patent number: 4452296
    Abstract: An aluminum-diffusion coated steel pipe having an aluminum-coated layer on at least the inner surface of the steel pipe to be in contact with molten metal is used as a gating pipe system in a casting mold comprising a mold body and a gating system for pouring molten metal into the mold body. This aluminum-diffusion coated steel pipe can be further subjected to a secondary heat treatment in a high-temperature oxidizing atmosphere.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: June 5, 1984
    Assignees: Hitachi Kinzoku Kabushiki Kaisha, Shinto Kogyo Kabushiki Kaisha
    Inventors: Tomiaki Amano, Tetsuya Eda, Sunao Nishi, Shigeyoshi Shichiri, Takayuki Fukunaga
  • Patent number: 4450887
    Abstract: Method and apparatus for the direct chill casting of non-ferrous metals comprises varying the chill depth of the mould independently of the level or quantity of liquid metal in the mould by relatively moving the mould and a "hot-top" which may be a sleeve of refractory material during the casting, which may comprise semi-automatic or automatic casting.
    Type: Grant
    Filed: December 1, 1981
    Date of Patent: May 29, 1984
    Assignee: The British Aluminium Company Limited
    Inventor: Rennie F. T. Wilkins
  • Patent number: 4450889
    Abstract: A ceramic shell mold for directional solidification of a single crystal metal article has an improved starter section which converts columnar grain growth to single crystal grain growth. The pitch or lead of the helix is chosen so that the separation between adjacent turns of the helix is less than twice the thickness of the layered ceramic shell material which comprises the mold. Thus, when the ceramic shell mold is formed by the repetitive application of layers of ceramic to a wax pattern, the gap between adjacent turns of the helix will be bridged when the mold has reached 50-80% of its final thickness. Then, continued accumulation of ceramic layers bridges the turns of the helix thereby giving it strength. A helical passage diameter in the 8-10 mm range significantly increases single crystal casting yields compared to smaller diameters commonly used heretofore.
    Type: Grant
    Filed: August 20, 1982
    Date of Patent: May 29, 1984
    Assignee: United Technologies Corporation
    Inventor: Arnold S. Grot
  • Patent number: 4450886
    Abstract: A method of producing suction manifolds for automobile engines. In forming an exhaust gas re-circulating pipe passage integrally with a suction manifold for re-circulating exhaust gases from the engine to the suction manifold, a curved pipe of aluminum having a high-temperature resistant film formed on its surface is molded into a manifold of aluminum alloy at a suitable place on the latter.
    Type: Grant
    Filed: December 13, 1982
    Date of Patent: May 29, 1984
    Assignee: Nakamura Kinzoku Kogyosho, Inc.
    Inventors: Michitoshi Enomoto, Yasuo Shimizu
  • Patent number: 4450885
    Abstract: A process for the preparation of granules of low-melting-point metals which comprises spouting a melt of a low-melting-point metal in the form of fine streams in a gas phase under melt fracture-causing conditions and introducing the fine streams of the molten metal into a collecting liquid phase so that the speed of the molten metal fine streams just above the liquid face is 50 to 300 cm/sec is disclosed. According to this process, granules having a substantially spherical shape and being uniform in the size can be prepared very easily at high efficiency.
    Type: Grant
    Filed: November 7, 1978
    Date of Patent: May 29, 1984
    Assignee: Mizusawa Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yujiro Sugahara, Hiroyuki Naito, Akira Takahashi, Manshiro Hasegawa, Hisashi Tsuchida
  • Patent number: 4449567
    Abstract: A plurality of mold wall segments are positioned in a circular array in an adjustable fixture to form a mold assembly. The fixture includes a base with a plurality of upstanding pin members. Two of the pin members engage the bottom portion of each mold wall segment. Each pin member is eccentrically mounted on a disc. By rotating the discs relative to their base, the mold wall segments may be moved inward or outward. This movement varies the diameter of the lower portion of the mold assembly. The pin members have threaded end portions which enable the pin members to be moved along their upstanding central axes. This movement varies the height of the lower portion of the mold assembly. In addition, the fixture includes a plurality of radially extending adjusting rods, each rod engages a radially inner side surface of a mold segment.
    Type: Grant
    Filed: August 6, 1979
    Date of Patent: May 22, 1984
    Assignee: TRW Inc.
    Inventors: William S. Blazek, Thomas S. Piwonka
  • Patent number: 4448235
    Abstract: A vaporizable pattern for casting reduced porosity metal by a lost foam process is coated first with a thermally insulative, refractory layer characterized by a relatively high gas permeability and thereafter with a vaporizable polymeric layer characterized by a relatively low gas permeability. During metal casting, the refractory layer insulates the polymeric layer to delay vaporization, whereupon the low permeability causes pattern decomposition vapors to build up and slow metal replacement of the pattern to reduce vapor-entrapping turbulence. After vaporization of the polymeric layer, the vapors readily vent through the high permeability, refractory layer to avoid entrapment in the metal.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: May 15, 1984
    Assignee: General Motors Corporation
    Inventor: Gary E. Bishop
  • Patent number: 4445564
    Abstract: A machine for making mould cores from flowable sand mixtures in hot multi core boxes including a supporting frame carrying a conveyor whereon core boxes are placed, each of the boxes having a top and a bottom piece and mechanically interlinked main and additional gates. The gates are adapted to close or open respectively the central and peripheral core print openings of the core boxes while interacting with their respective individual drives. When the main gate and one of the additional gates interact with their respective individual drives made fast on the supporting frame at the pressing mechanism, they close respectively the central and peripheral core print openings. When the main gate and the other additional gate interact with their other individual drives made fast on the supporting frame before the splitting-up mechanism, they open the central and peripheral core print openings.
    Type: Grant
    Filed: November 10, 1981
    Date of Patent: May 1, 1984
    Assignee: Tsentralnoe Proektno-Konstruktorskoe I Tekhnologicheskoe Bjuro
    Inventors: Vitaly A. Zitser, Leonid V. Bachelis, Alexandr V. Melnikov, Eduard A. Stolyar, Vladimir S. Kushelman, Igor I. Dreishev, Vladimir D. Abaskalov, Vladimir A. Levinson, Vladimir A. Ivanov, Jury E. Morozov