Patents Assigned to Ishikawajima-Harima Jukogyo Kabushiki Kaisha
  • Turbine casing for turbochargers
    Patent number: 4389845
    Abstract: A turbine casing for turbochargers adapted for use with reciprocating internal combustion engines, in which in response to the flow rate of the exhaust gases from an engine, the exhaust gases are directed to flow through a first or radially inward scroll divided into two or more exhaust gas passages in the axial direction of a turbine wheel or through said first or radially inward scroll and a second or radially outward scroll, whereby regardless of the variations in flow rate an optimum supercharging efficiency can be maintained over the whole region of operating conditions of the engine.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: June 28, 1983
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventor: Takaaki Koike
  • Oil seal system for shaft of turbocharger
    Patent number: 4389052
    Abstract: An oil seal system for the shaft of a turbocharger has an oil-trapping chamber formed by an oil thrower, thrust metal, and seals arranged so as to prevent the leakage of the lubricant into the blower.
    Type: Grant
    Filed: June 19, 1980
    Date of Patent: June 21, 1983
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Masami Shimizu, Junji Yasunobe
  • Metal heating furnace
    Patent number: 4388068
    Abstract: A heating furnace in which radiant tubes are extended widthwise into the furnace so that the products of combustion are discharged into the furnace, whereby intermediate shapes such as slabs which are transported through the furnace are heated to desired rolling temperatures.
    Type: Grant
    Filed: July 30, 1981
    Date of Patent: June 14, 1983
    Assignees: Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Nippon Steel Corporation
    Inventors: Osamu Takeuchi, Hiroshi Hasegawa, Susumu Izumi, Naoki Otsuki
  • Winding machine
    Patent number: 4380164
    Abstract: A winding machine for winding a strip in which a plurality of wrapper rolls disposed around a mandrel are adapted to be retracted away from the mandrel whenever the stepped portion of the strip passes them in response to the control signal generated at the time when the stepped portion passes each wrapper roll, the time being calculated automatically from the time when the stepped portion passes a specified wrapper roll.
    Type: Grant
    Filed: January 19, 1981
    Date of Patent: April 19, 1983
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventor: Hiroaki Kuwano
  • Apparatus for producing granules from molten metallurgical slags
    Patent number: 4373883
    Abstract: An apparatus for manufacturing granules from slags produced in metallurgical furnaces such as blast furnaces, converter furnaces, electric furnaces, reverberatory furnaces comprising means for accelerating a stream of molten slag from a container to a velocity of at least two meters per second, and directing the stream onto a target surface from which it rebounds in the form of an inverted cone of droplets which are projected through the air to cool and to solidify them into granules.
    Type: Grant
    Filed: February 18, 1981
    Date of Patent: February 15, 1983
    Assignees: Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Sumitomo Metal Industries, Ltd.
    Inventors: Kazuo Tachimoto, Toyosuke Tanoue
  • Apparatus for cooling sheet steel by water spraying
    Patent number: 4371149
    Abstract: Cooling water is sprayed under a predetermined pressure range and at a predetermined discharge rate over the both surfaces of a sheet to be treated which is reciprocated lengthwise at such a velocity that the product of the reciprocating velocity and thickness of the sheet may be maintained within a predetermined range. The spraying direction of each spray nozzle is individually controlled so that any water remaining over the surface of the sheet may be expelled out. The method and apparatus is especially adapted for use in the normalizing process and in the process for cooling hot-rolled sheet steel.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: February 1, 1983
    Assignees: Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Sumitomo Metal Industries, Ltd.
    Inventors: Osamu Takeuchi, Haruo Kokubun, Hisashi Yoshinaga, Shuichi Hara, Hiromichi Ban
  • All position TIG welding process
    Patent number: 4366362
    Abstract: In a TIG welding process with controlled welding current pulses, DC current pulses with the frequency set at from tens to hundreds Hz (most preferably from 30 to 300 Hz) are fed to an electrode and current pulses are also fed to a filler wire so that an arc is caused to swing, whereby a large pool of molten metal can be maintained in a positive and stable manner due to the high arc pressure obtained when the welding current pulses at from tens to hundreds Hz is used.
    Type: Grant
    Filed: February 3, 1981
    Date of Patent: December 28, 1982
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Ichiro Ohta, Akio Tejima, Masayuki Watando, Akira Yamaoka, Kouzi Ishiwata, Minoru Yamada
  • Rolling process
    Patent number: 4365496
    Abstract: A rolling process wherein a pair of working rolls are driven at different peripheral velocities so that the peripheral velocity ratio may be varied, and the peripheral velocity ratio is so controlled that the rolling torque of each of the working rolls may be within a maximum tolerable torque which the working roll may transmit, thereby reducing the rolling force.
    Type: Grant
    Filed: February 24, 1978
    Date of Patent: December 28, 1982
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Hiroyuki Shiozaki, Masao Mikami, Isao Imai, Toshio Iwanami
  • Apparatus for reducing iron ore or the like
    Patent number: 4363473
    Abstract: A reduction process and apparatus wherein the flow of the reducing fluid through the fixed bed of iron ore, oxidized pellet or the like to be reduced is reversed in direction so that the iron ore, oxidized pellet or the like, at any place in the bed, may be reduced uniformly.
    Type: Grant
    Filed: August 24, 1981
    Date of Patent: December 14, 1982
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Toshio Nanjo, Akinori Nakamura, Hidekazu Ishikawa
  • Method for producing granules from molten metallurgical slags
    Patent number: 4358415
    Abstract: A method of manufacturing granules from slags produced in metallurgical furnaces such as blast furnaces, converter furnaces, electric furnaces and reverberatory furnaces. A molten slag stream from a container at a velocity of at least two meters per second is impinged upon a non-wetting target surface, from which the stream rebounds in a film of projected droplets having the shape of an inverted cone. Cooling and solidifying the droplets by their projected flight in air forms solid granules.
    Type: Grant
    Filed: February 18, 1981
    Date of Patent: November 9, 1982
    Assignees: Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Sumitomo Metal Industries, Ltd.
    Inventors: Kazuo Tachimoto, Toyosuke Tanoue
  • Shearing device for ingots
    Patent number: 4343212
    Abstract: A shearing device wherein a shear main body including an upper and a lower blades one of which is moved toward or away from the other for shearing an ingot is provided with an eccentric so that when the shear main body swings in synchronism with an ingot to be cut which is continuously moving, the upper and lower blades may be moved substantially horizontally in the direction of the passage of the ingot especially when the shearing of the ingot occurs, thereby preventing the "nose bending" of the ingot. A plurality of upper and lower blades are provided for shearing a plurality of ingots in side-by-side relationship wherein the drive mechanism for each upper and lower blade pair includes a plurality of hydraulic cylinders aligned in the direction of ingot movement in order to reduce spacing between ingots.
    Type: Grant
    Filed: June 15, 1979
    Date of Patent: August 10, 1982
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Takehiro Hishinuma, Yutaka Tsuchida
  • Particle separator
    Patent number: 4342576
    Abstract: A cyclone type particle separator comprising a lower cone with a particle outlet, an intermediate cylinder and an upper truncated cone. An inlet is opened at the intermediate cylinder tangentially or involutedly thereof and adjacent to the upper end of the lower cone so that the particle-laden gas can freely spiral upward in the intermediate cylinder and the upper truncated cone while the particles separated drop into the lower cone. The top wall of the upper truncated cone is spaced apart from the inlet by a suitable distance, and upper particle trapping chambers are extended tangentially and outwardly from the upper truncated cone and is contiguous with the top wall so that the particles separated in the upper truncated cone adjacent to the top wall thereof can be trapped and collected in the upper trapping chambers.
    Type: Grant
    Filed: June 26, 1980
    Date of Patent: August 3, 1982
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Masao Seki, Hideo Sato
  • Method and apparatus for compensating for local temperature difference of steel product
    Patent number: 4333777
    Abstract: Method and apparatus for compensating for local temperature difference of a steel product which has been previously heated above room temperature because of the preceding operation such as rolling and which is to be heat-treated. Upper, lower and edge burners are arranged in opposed relationship with a path of travel and are selectively ignited depending upon the surface temperature distribution of the steel product detected before it enters the apparatus, in such a way that the steel product is heated uniformly to a desired temperature.
    Type: Grant
    Filed: June 20, 1980
    Date of Patent: June 8, 1982
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Osamu Takeuchi, Kiyoshi Aoki, Yuichi Fujii
  • Combustion furnace or reactor with multi-stage fluidized bed system
    Patent number: 4321233
    Abstract: A combustion furnace or reactor with a multi-stage fluidized bed system wherein upper and lower fluidized bed formation zones in which the fluidized beds of bed particles containing particles of lime stone are separated through a partition device. The partition device is provided with a plurality of exhaust gas distribution holes for distributing the exhaust gases produced in the lower fluidized bed into the upper fluidized bed and a plurality of nozzles through which issue the combustion air and/or recirculated exhaust gases into the upper fluidized bed. Combustion products such as NO.sub.x and SO.sub.x are desulfurized and denitrified respectively within the reactor by calcium compounds which absorb SO.sub.2 and act as catalysts for reducing NO.sub.x.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: March 23, 1982
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Shoichi Tsuji, Kiyoshi Aoki, Minoru Asai
  • Process and system for recovering top gas from blast furnace or the like
    Patent number: 4315619
    Abstract: A process and system for recovering the top gas from a blast furnace into a gas holder without discharging the top gas into the surrounding atmosphere so as to be utilized for various purposes, thereby overcoming the environmental pollution problems and attaining the energy saving.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: February 16, 1982
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Kazumi Inoue, Shunzo Tono, Masaoki Takahashi
  • Apparatus for detecting the relative position of two movable bodies
    Patent number: 4315252
    Abstract: Apparatus is disclosed for detecting the relative position or displacement between two movable bodies, wherein a reader or sensor mounted on one of the two bodies reads a code pattern on the other body. A code pattern is provided that represents a binary-coded base-n number, each digit of a base-n number being represented by each of first, second, third, . . . , and m-th unit-distance codes (where m being the least submultiple except 1 of the base-n number system), these codes in turn being converted into a common binary code so that the relative position or displacement between the two bodies may be represented by the binary-coded base-n number.
    Type: Grant
    Filed: December 20, 1979
    Date of Patent: February 9, 1982
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventor: Ichizo Tagami
  • Oil seal device
    Patent number: 4314705
    Abstract: Disclosed is an oil seal device using oil seal rings and a centrifugal oil thrower and having a construction such that the oil seal rings are provided on each side of the oil thrower to minimize the amount of oil that leaks to the oil thrower.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: February 9, 1982
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventor: Masami Shimizu
  • Apparatus for changing rolls of vertical rolling mill stand
    Patent number: 4308741
    Abstract: An apparatus for changing the rolls of a vertical rolling mill stand by moving each roll of a roll pair to the roll changing position transversely outwardly of the rolling position where the spacing between the rolls is maximum and then pulling upwardly the roll together with its upper and lower bearing boxes from a housing. The rolls may be changed even when a slab is passing.
    Type: Grant
    Filed: January 7, 1980
    Date of Patent: January 5, 1982
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Hikonori Ishii, Kenichi Ide
  • Apparatus for distributing materials into vertical type furnace
    Patent number: 4306827
    Abstract: An apparatus for distributing materials into a blast furnace using no bell. The apparatus has a material distributing hopper disposed for a rocking motion around the central axis of said furnace. The rocking motion of the material distributing hopper is caused by an axial movement and rotation of a single drive shaft disposed outside the furnace.
    Type: Grant
    Filed: June 19, 1980
    Date of Patent: December 22, 1981
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Teruo Tsutsumi, Kazumi Inoue, Shuji Asami, Masayuki Kohmoto, Toshiyuki Nasu, Yoshio Seo, Toshio Yasusaka
  • Magnetic particle separating device
    Patent number: 4306970
    Abstract: A magnetic particle separating device in which magnetic particles entrained or contained in coolants, lubricants or working fluids are separated and removed by the application of magnetic fields.
    Type: Grant
    Filed: April 4, 1980
    Date of Patent: December 22, 1981
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Hiroto Tanaka, Yasumasa Kohno, Hideyuki Tanaka