Patents Assigned to Ishikawajima-Harima Jukogyo Kabushiki Kaisha
  • Arc furnace installation with shroud
    Patent number: 4506370
    Abstract: An arc furnace installation wherein the arc furnace is air-tightly enclosed with a shroud and a scrap preheating chamber moves into or out of the shroud in such a way that the preheating chamber may be selectively brought to a position immediately above the arc furnace, a scrap preheating position spaced apart from the arc furnace by a predetermined distance and a scrap charging position outside of the shroud. The number of openings of the shroud may be reduced to a minimum and consequently the total area of the openings may be minimized.
    Type: Grant
    Filed: July 6, 1983
    Date of Patent: March 19, 1985
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventor: Yoshiaki Yoshimatsu
  • Multistage rolling mill with flatness control function
    Patent number: 4494396
    Abstract: The present invention considerably improves the rolling mill in the flatness control function, by arranging either of a pair of upper and lower work rolls as a small-diameter roll, offsetting the small-diameter work roll by a required distance in the rolling direction, providing an intermediate roll between the small-diameter work roll and a backup roll, letting a vertical bending force act on the upper and lower work rolls and the intermediate roll, and letting a horizontal bending force act on the small-diameter work roll.
    Type: Grant
    Filed: March 25, 1982
    Date of Patent: January 22, 1985
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Toshio Iwanami, Hajime Watanabe
  • Device for preventing bottom of ships hold from being cooled by leaked liquid from low temperature liquid storage tank carried by ship
    Patent number: 4488500
    Abstract: In a ship for carrying a low temperature liquid storage tank which is supported on the bottom of a ship's hold by especially horizontal displacement preventive tank supporting structures, a leaked liquid receiving pan is disposed below an engaging member which is extended downwardly from the bottom of the tank. The low temperature liquid leaked from the tank and falling between the engaging member and a heat insulating layer surrounding the tank is received by the leaked liquid receiving pan and does not reach the bottom of the ship's hold, whereby the bottom of the hold is prevented from being cooled.
    Type: Grant
    Filed: June 8, 1983
    Date of Patent: December 18, 1984
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Kazumichi Mototsuna, Takashi Fujitani, Yoshito Okumura, Iwao Nemoto, Shuichi Kitaguchi
  • Vertical roller mill
    Patent number: 4483487
    Abstract: Disclosed is a vertical roller mill wherein a material fed to a casing is ground between a rotary table and a plurality of grinding rollers which are pressed against the rotary table and are rotated as the rotary table is rotated, the ground material being entrained by the upblast of heated gas or the like and discharged out of the casing. A bracket extended above the rotary table for carrying the grinding roller is pivoted at the side of the casing, and a pull-down means is connected with the bracket adjacent to the part thereof at which the grinding roller is supported. The bracket is pulled down by the pull-down means so that the grinding roller may be pressed against the rotary table.
    Type: Grant
    Filed: March 30, 1982
    Date of Patent: November 20, 1984
    Assignees: Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Sumitomo Cement Kabushiki Kaisha
    Inventors: Susumu Katsuta, Susumu Adachi, Hoshino Shuji
  • Method for purifying exhaust gases with hydrogensulfates
    Patent number: 4478801
    Abstract: A process for purifying exhaust gases is disclosed. Exhaust gases discharged when coal or petroleum is burned are forced to pass through reaction media consisting of molten salts whose major component is a hydrogensulfate or hydrogensulfates, whereby desulfurization and denitration can be effected by one step. Harmful compounds such as sulfur oxides, nitrogen oxides and dust particles in the exhaust gases can be efficiently removed and the purified gases can be smoothly diffused.
    Type: Grant
    Filed: July 5, 1983
    Date of Patent: October 23, 1984
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Hiroo Tominaga, Kaoru Fujimoto, Tsutomu Shikada
  • Incinerator with moving-bed stoker
    Patent number: 4475468
    Abstract: An incinerator with a moving-bed stoker in which a chain conveyor is inclined in the direction of its movement and a plurality of fuel- or fire-bed members L-shaped in cross section are mounted on the links of the chain conveyor, whereby a step-like moving fuel- or fire-bed is defined. Each fuel- or fire-bed member comprises an upright or vertical plate and a horizontal plate and combustion air injection holes are formed through the upright or vertical plate so that the foreign matter such as ash, metal pieces or the like as well as the molten ash produced as the result of the combustion of waste with a low melting point can be prevented from falling through the combustion air holes into the stoker.
    Type: Grant
    Filed: May 16, 1983
    Date of Patent: October 9, 1984
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Tokihiko Ishikawa, Takehiko Motomura
  • Metal heating furnace
    Patent number: 4469314
    Abstract: A metal heating furnace for heating slabs, billets or blooms prior to their hot rolling. Full use to thermal energy can be ensured and the workpieces can be uniformly heated to a desired rolling temperature.
    Type: Grant
    Filed: November 19, 1981
    Date of Patent: September 4, 1984
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Osamu Takeuchi, Akira Aizawa
  • Winding machine
    Patent number: 4466578
    Abstract: The invention relates to a winding machine which winds a very thin metallic sheet at a high speed automatically with a winding drum pressed against a drive roll and driven by the frictional torque of the latter and air blown in a direction same with that of travel of the sheet.
    Type: Grant
    Filed: July 6, 1982
    Date of Patent: August 21, 1984
    Assignees: Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Kawasaki Seitetsu Kabushiki Kaisha
    Inventors: Kiyoshi Shibuya, Hiroshi Shimanaka, Yoshiaki Tanaami
  • Fluidized-bed combustion system
    Patent number: 4460330
    Abstract: A fluidized-bed combustion system for a boiler, a heating furnace for heating steels or the like, in which a plurality of gas distribution pipes are disposed at the bottom of the combustion chamber. The lower end of each gas distribution pipe is communicated with an air supply line with an air flow rate control valve and a fuel supply line with a fuel flow rate control valve and the air and fuel admitted into the gas distribution pipe are mixed within the same and the air and fuel mixture is injected or sprayed into the fluidized bed through injection ports of the gas distribution pipe which are positioned adjacent to the bottom of the fluidized bed, whereby the complete combustion within the fluidized bed can be ensured and the combustion can be controlled over a wide range and optimized depending upon a load.
    Type: Grant
    Filed: April 8, 1983
    Date of Patent: July 17, 1984
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Minoru Asai, Kiyoshi Aoki, Osamu Takeuchi
  • Method and apparatus for variably controlling transverse rigidity of rolling machine
    Patent number: 4458515
    Abstract: In a sheet rolling mill having work rolls and backup rolls, rolling of flat sheets is facilitated by controlling constant the transverse rigidity or deflection in the direction of width of rolls. The rolling force is detected, and based on the rolling force thus detected, the value for correcting the crown of the work roll is calculated by a transverse rigidity coefficient and a function determined by sheet thickness to control the transverse rigidity.
    Type: Grant
    Filed: May 3, 1982
    Date of Patent: July 10, 1984
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventor: Isao Imai
  • Thrust bearing for turbocharger
    Patent number: 4453837
    Abstract: In a thrust bearing for a turbocharger of the type having a thrust metal formed with a lubricating oil passage in communication with a lubricating oil feed port, a thrust bushing and an oil thrower, the inner peripheral wall of the thrust metal is formed with an annular oil reservoir and a single or plural small-diameter holes are axially extended through the wall of the thrust metal so as to intercommunicate between the oil reservoir and the outer peripheral wall of the thrust metal, that is, the thrust load carrying surface, whereby a sufficient quantity of lubricating oil can issue through such small-diameter holes to the load bearing surface. Because of this arrangement, the overall lubricating oil required may be reduced yet reliable and dependable operation can be ensured. In addition, the thrust load carrying capacity can be remarkably increased.
    Type: Grant
    Filed: November 30, 1982
    Date of Patent: June 12, 1984
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Masami Shimizu, Fusayoshi Nakamura
  • Cooling pipe structure for arc furnace
    Patent number: 4434495
    Abstract: In the present invention, many cooling pipes are arranged horizontally at least in any one of the walls or roof of a furnace, to be fitted at the respective ends on both sides with supporting pipes provided outside the furnace, to let the cooling medium flow in one system for high cooling efficiency and long life. The cooling pipes may be arranged in ladder fashion or in a similar way, to keep the splash film stable, thereby preventing the decrease of the thermal efficiency of the furnace.
    Type: Grant
    Filed: May 21, 1982
    Date of Patent: February 28, 1984
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Fumio Tomizawa, Masayuki Aoshika
  • Extrusion head for use in blow molding machine
    Patent number: 4422838
    Abstract: An extrusion head for use in blow molding machines for molding parison having a single layer or wall or a plurality of layers or walls, in which a plunger is slidably interposed between a head body and a core and the plastic material is successively accumulated in an accumulation chamber defined between the extruding end of the plunger, the head body and the core so that the faster the plastic material is introduced into the extrusion head, the faster it is extruded.
    Type: Grant
    Filed: June 5, 1981
    Date of Patent: December 27, 1983
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Akira Iwawaki, Eiji Horiuchi, Sadahiko Shinya, Kinshiro Kojima, Katsuo Kodama, Kotaro Kawabata, Hisahiko Fukase
  • Hydrostatic bearing type coupling for use in vibrating machine
    Patent number: 4422334
    Abstract: The present invention provides a hydrostatic bearing type coupling for a vibrating machine. The coupling is interposed between a vibration table upon which a test specimen or the like is mounted and a vibrator in such a way that even when the vibration table is caused to vibrate three-dimensionally, there are free movements in the two directions.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: December 27, 1983
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventor: Osamu Yasuda
  • Apparatus for calcining raw materials in the form of powder or particles
    Patent number: 4407652
    Abstract: Disclosed is an apparatus for calcining raw materials in the form of powder or particles. The gases entrain the particles to spiral upward in the calcining furnace. In an upper throttle chamber the relatively coarse particles which have not been completely calcined are separated from the gas flow and returned into the calcining zone to be calcined again. This pattern of material flow is repeated several times. The calcining efficiency can be improved, so that the furnace can be made small in size. The uniformly calcined particles are discharged from the top of the furnace and introduced into one or more cyclone separators through an outlet duct including a 180.degree. bend section.
    Type: Grant
    Filed: November 30, 1981
    Date of Patent: October 4, 1983
    Assignees: Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Chichibu Cement Kabushiki Kaisha
    Inventors: Toshikazu Ichiyanagi, Kanzaburo Sudoh, Keisuke Ogawa, Nobuhiro Yamazaki
  • Oil seal device for high-speed rotary machine
    Patent number: 4396197
    Abstract: One end of a casing in which a rotating shaft is supported by a floating metal bush is extended to surround the outer periphery of an oil thrower formed adjacent to an end of the shaft so that an oil-thrower space is defined by the shaft, the oil thrower, the casing and the floating metal bush, and an arcuate opening is formed through the wall of the casing so that the lubricating oil trapped in the oil-thrower space is discharged through this opening to an oil outlet.
    Type: Grant
    Filed: October 28, 1981
    Date of Patent: August 2, 1983
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventor: Masami Shimizu
  • Method and device for magnetically transporting
    Patent number: 4395746
    Abstract: A method and device for magnetically transporting finely divided magnetic particles accumulated or deposited at a space. First a DC magnetic field is exerted to the finely divided magnetic particles so as to magnetize and bring them into an easy-to-be-handled state and then revolving alternating fields are exerted to the magnetized, finely divided magnetic particles, thereby magnetically transporting them.
    Type: Grant
    Filed: April 24, 1980
    Date of Patent: July 26, 1983
    Assignees: Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Tohoku Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Hiroto Tanaka, Yasumasa Kohno, Hideyuki Tanaka, Kotaro Sasaki
  • Shroud for steel making electric-arc furnace
    Patent number: 4395023
    Abstract: This invention relates to a shroud for a steel making electric-arc furnace which surrounds the electric-arc furnace main body for sound- and dust-proofing, having doors provided in the side wall of the shroud to permit the scrap bucket to move in and out of the shroud and an opening of a minimum width in the suction port of a dust collecting suction duct on the top wall to permit transverse movement of the bucket lifting means to the center of the electric-arc furnace main body.
    Type: Grant
    Filed: June 14, 1982
    Date of Patent: July 26, 1983
    Assignees: Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Kawasaki Seitetsu Kabushiki Kaisha
    Inventors: Fumio Tomizawa, Katsutoshi Sobata, Yoshiaki Yoshimatsu, Sadayuki Saito, Takashi Otani, Senzaburo Hirano
  • Oil seal for bearings of turbocharger
    Patent number: 4392752
    Abstract: An oil seal for bearing of turbocharger is constructed so as to have an excellent sealing effect in which a lubricating oil flowing through the oil seal is subjected to the centrifugal force in such a way that the lubricating oil is forced to return toward a lubricating oil chamber.
    Type: Grant
    Filed: August 6, 1981
    Date of Patent: July 12, 1983
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Masami Shimizu, Junji Yasunobe
  • Gas-liquid separator
    Patent number: 4390351
    Abstract: A centrifugal separator for separating gas bubbles from a liquid incorporates a spiral liquid passage with inlet and outlet ends as defined by a top plate, a bottom plate and a strip spirally coiled between the plates and otherwise constructed so that by utilizing the low specific gravity of the bubbles and centrifugal force acting thereon, the bubbles are directed into a bubble trapping compartment for removal.
    Type: Grant
    Filed: October 20, 1981
    Date of Patent: June 28, 1983
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Kunio Matsui, Hiroaki Tsuchiya, Ryushi Suzuki