Patents Assigned to Mitsui Engineering and Shipbuilding Co., Ltd.
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Patent number: 6048625Abstract: Wear resisting steel, a sliding member for a cylinder in an internal combustion engine, and a ring spring consist of: carbon: equal to or less than 2.2% by weight; silicon: equal to or less than 1.2% by weight; manganese: equal to or more than 0.2 % by weight and less than 1.20% by weight; chromium: equal to or less than 16% by weight; phosphorus: equal to or less than 0.08% by weight; sulfur: equal to or more than 0.15% by weight; other compositions: equal to or less than 2.0 % by weiht; and the balance substantially consisting of iron. The surfaces thereof may be sulphurized. The steel has excellent resistance to wear and scuffing, provides high strength, great elongation, and high toughness, and also provides good machinability.Type: GrantFiled: January 20, 1998Date of Patent: April 11, 2000Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.Inventors: Kenzo Miura, Hitoshi Okamoto, Tatsuhiro Jibiki, Takao Tanaka, Shinichi Miyake, Naohiro Tanaka
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Patent number: 5970433Abstract: A sensor detects the presence or the absence of an obstacle by radiating a laser beam to the outside of a casing through a light projecting mirror and by letting the reflected light from an obstacle enter a light receiving element through a light receiving mirror. A light projecting window with a light projecting mirror positioned and a light receiving window with a light receiving mirror are positioned in the casing with a space therebetween to prevent reflected light from directly entering the light projecting window. The mirrors are attached to a rotation shaft of a motor, or rotation shafts of motors, synchronously rotatable provided between both mirrors. The optical axis of light radiated to the outside of the casing is set to face in a higher direction than horizontal to radiate in a cone-shaped form.Type: GrantFiled: February 12, 1997Date of Patent: October 19, 1999Assignee: Mitsui Engineering & Shipbuilding Co. Ltd.Inventors: Koji Oka, Masujiro Hisatani, Hiroshi Imajo, Toru Takehara
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Patent number: 5965003Abstract: CMPO is safely, reliably and rapidly decomposed under mild conditions. A CMPO-containing substance is emulsified in an electrolyte comprising an oxidation promoter (silver ion) by an emulsifier in an emulsifying tank, this electrolyte comprising the CMPO-containing substance is supplied to an anode chamber, and an electrolytic oxidation reaction is performed by passing an electric current. By emulsifying the CMPO-containing substance, the surface area of CMPO in contact with electrolyte is increased, and electrolytic decomposition is thereby promoted. As sufficient CMPO decomposition is not obtained by passing the emulsion only once through an electrolysis tank 1, a batch oxidation method is employed wherein an anolyte is recirculated by a recirculating pump 3a through the anode chamber, a constant temperature bath 7a and an emulsifying tank 6, so that electrolysis is performed with the CMPO-containing substance permanently emulsified in the electrolyte.Type: GrantFiled: March 5, 1998Date of Patent: October 12, 1999Assignees: Doryokuro Kakunenryo Kaihatsu Jigyodan, Mitsui Engineering & Shipbuilding Co., Ltd., Chlorine Engineers Corp, Ltd.Inventors: Masaki Ozawa, Yasumasa Tanaka, Yoshihiro Hoshino, Hiroyuki Tanuma, Chisako Kawakami, Takamichi Kishi
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Patent number: 5934101Abstract: The condensed water, as condensed by applying the VRC to a regeneration process, and the strong solution, as fed out of a regenerator, are employed as a heat source to preheat a weak solution so that the preheating amount of the weak solution is increased to improve the performance coefficient of a heat pump.Type: GrantFiled: December 11, 1997Date of Patent: August 10, 1999Assignees: The Chugoku Electric Power Co., Inc., Mitsui Engineering & Shipbuilding Co., Ltd.Inventors: Tsuneo Takaki, Mitsuaki Kanetsuki, Akira Ochikubo, Hajime Endou, Yoshinori Nagashima
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Patent number: 5919353Abstract: In a method for thermally reforming an emulsion, comprising removing water and an alkali metal or alkaline earth metal salt contained in an oil-in-water type emulsion of a tarry material or a heavy fuel oil (e.g., ORINOCO BITUMEN), sulfuric acid is added, in an amount of preferably 0.05% to 1.0% by weight based on the emulsion, to the emulsion, the mixture is allowed to stand at such a temperature as to give a difference in density between separated water and heavy fuel oil, preferably for 10 min or more, to permit oil-water separation, and the separated oil phase is withdrawn. When the tarry material is ORINOCO BITUMEN, an emulsion made of ORINOCO BITUMEN is thermochemically reformed by adding 0.1 to 0.4% by weight of sulfuric acid to ORINOCO BITUMEN, allowing the mixture to stand under pressure at a temperature of 170.degree. to 200.degree. C.Type: GrantFiled: November 6, 1996Date of Patent: July 6, 1999Assignee: Mitsui Engineering & Shipbuilding Co. LTD.Inventors: Hidenobu Itou, Isao Tanaka, Manabu Katagiri, Yasuhisa Endou, Yutaka Nagita
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Patent number: 5752865Abstract: A circular nozzle disposed in front of a propeller of a ship has a leading edge thereof which divided an upper leading edge and a lower leading edge. The upper leading edge approaches progressively the propeller disc toward the lower part thereof, the angle of inclination of the upper leading edge and that of the lower leading edge become different, with the junction part at which the upper and lower leading edges meet being the border, and the junction is positioned in the proximity of a horizontal plane including the axis line of the propeller shaft.Type: GrantFiled: November 25, 1996Date of Patent: May 19, 1998Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.Inventors: Norio Ishii, Kazuo Arai, Hiroshi Tomaru, Akihiko Fujii, Yuki Takahashi
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Patent number: 5735224Abstract: A thermal dechlorinating apparatus for collected ash, having a vertically elongated cylindrical apparatus body, a collected ash inlet and a collected ash outlet which are provided on the apparatus body and spaced in a vertical direction thereof, an inlet port for heated air provided on the portion of the apparatus body between the inlet and the outlet, an exhaust gas outlet provided on the portion of the apparatus body above the collected ash inlet, a rotary shaft provided along the axial direction of the apparatus body, a screw provided on the rotary shaft, and heating means provided on the portion of the apparatus body between the collected ash inlet and the collected ash outlet. Heated air is led into the apparatus body through the heated air inlet port. A stirred fluidized layer is formed in the portion of the apparatus body above the heated air inlet port, and a moving layer is formed below the heated air inlet port.Type: GrantFiled: April 10, 1996Date of Patent: April 7, 1998Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.Inventors: Gentaro Takasuka, Mazumi Itaya
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Patent number: 5694878Abstract: In a semi-submerged catamaran comprising at least two submerged bodies, struts mounted in a standing position on respective submerged bodies and a hull part supported by the struts above the water surface, motion preventing fins are fixed in a submerged part on the bow side and/or in a submerged part on the stern side of the catamaran.Type: GrantFiled: March 18, 1996Date of Patent: December 9, 1997Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.Inventor: Kazuo Masuyama
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Patent number: 5560663Abstract: The guide device for craning a container has guides so arranged that they can be moved vertically by a raising/lowering device mounted on the spreader body and can be positioned at the corners of the spreader. The guides are lowered by the raising/lowering device and secured to the bottom corners of the container held by the spreader. Then the spread parts of the guides project from the lower end of the container to secure the spreader to the container. The structure of the spreader is simple and the weight is light.Type: GrantFiled: June 22, 1994Date of Patent: October 1, 1996Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.Inventors: Shinji Hara, Kiyoshi Fujiwara, Toru Takehara, Masaharu Kawaguchi, Masayasu Miyake
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Patent number: 5554286Abstract: A membrane for liquid mixture separation is composed of an A-type zeolite film deposited on a porous support after seed crystals are held on a surface of the support.Type: GrantFiled: June 22, 1995Date of Patent: September 10, 1996Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.Inventors: Kenichi Okamoto, Hidetoshi Kita, Masakazu Kondo, Norikazu Miyake, Yasuo Matsuo
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Patent number: 5481298Abstract: An object dimension measuring apparatus consists of: a CCD camera mounted on an X- and a Y-axis table with its optical axis aligned with a Z-axis; a specimen table containing a light source and having its specimen mounting surface formed transparent; a light diffusion plate mounted on the specimen; and a computer. Using the CAD data, the computer moves the CCD camera. From the measured values obtained from the photographed images of the end portions of the specimen and from the distance traveled by the CCD camera, the computer calculates the dimensions of the specimen.Type: GrantFiled: March 14, 1995Date of Patent: January 2, 1996Assignees: Mitsui Engineering & Shipbuilding Co. Ltd., Toyama Light Metal Industry Co., Ltd.Inventors: Masahiko Sasaki, Masaaki Kaneko
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Patent number: 5476056Abstract: The present invention provides a method of reducing the fluid friction drag of ships and fluid transport channels and prevent contamination and corrosion of a structure having an immersed portion. The method of forming an air layer over an immersed surface of a structure having an immersed portion, comprising the steps of: covering the immersed surface of a structure (hull 1) having an immersed portion with a coating layer 3, which has depressions 6 and projections 7 at the surface thereof and which has at least vertices 7' of the projections 7 formed of a water-repellent material 8; and supplying air a to the surface 10 of the coating layer to form an air film 12 between the coating surface 10 and water 13.Type: GrantFiled: July 12, 1994Date of Patent: December 19, 1995Assignee: Mitsui Engineering & Shipbuilding Co., LtdInventors: Junichiro Tokunaga, Makoto Kumada, Yoichi Sugiyama, Nobuatsu Watanabe, Yong B. Chong, Naoki Matsubara
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Patent number: 5391988Abstract: A method and apparatus for nondestructively detecting a flaw such as a hairline crack or defect within a conductive object to be inspected. Surface flaws can be distinguished from deep flaws. The pulse duration of the pulse voltage induced in the secondary coil of a sensor is measured at two separate time instances. At one time instance, the pulse duration is affected by variations in the distance between the sensor and the object but is not affected by the flaw. At the other time instance the pulse duration is affected by said variations and also by the flaw. The effect of said variations is cancelled, using these two measured pulse durations. Only a signal correctly indicating the flaw is extracted to detect the presence of the flaw.Type: GrantFiled: April 20, 1993Date of Patent: February 21, 1995Assignees: Kabushiki Kaisha Nihon Hihakai Keisoku Kenkyusho, Mitsui Engineering & Shipbuilding Co., Ltd., MES Testing & Research Center Co., Ltd.Inventor: Shigeru Kitagawa
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Patent number: 5380483Abstract: A vibration-damping alloy having excellent vibration-damping properties, high strength, and excellent workability and weldability has the composition defined by a triangle formed by connecting points A (89% by weight of M, 0.2% by weight of Ni, and 10.8% by weight of Mn), B (75% by weight of M, 15% by weight of Ni, and 10% by weight of Mn), and C (75% by weight of M, 0.2% by weight of Ni, and 24.8% by weight of Mn) in a triangular diagram showing the proportions of M, Ni and Mn in FIG. 1. M consists of Fe and Si, Fe and P, Fe and Al, Fe, Nb and C, Fe and Cu, Fe, Mo and C, or Fe, Ti and C.Type: GrantFiled: August 5, 1993Date of Patent: January 10, 1995Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.Inventors: Satoshi Watanabe, Kenzo Miura, Toshinobu Okaku, Hitoshi Okamoto, Youichi Sugiyama
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Patent number: 5379663Abstract: A device for remotely controlling a multi-axial device has: an arm on which an operator's arm is set; a handle connected to front end of the arm; and joints for the arm and the handle. By the operation of the operator's arm and hand set on the arm and handle, the arm can be extended and horizontally and vertically pivoted, and the handle can be horizontally and vertically pivoted and, preferably, rolled as well. The arm portion outputs operational changes with respect to three axes of the horizontal rotation, the vertical rotation and the extending movement. The arm front portion outputs operational changes with respect to the three axes of the horizontal, vertical and rolling rotations. Thus, the number of axes employed in the master can be increased to detect a variety of movements thereof. The operational directions of the joy stick agree with the directions of the three rectangular coordinate axes. Thus, the device provides three-dimensional data regarding position and angle.Type: GrantFiled: November 22, 1993Date of Patent: January 10, 1995Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.Inventor: Kenji Hara
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Patent number: 5354112Abstract: The guide device for craning a container has guides so arranged that they can be moved vertically by a raising/lowering device mounted on the spreader body and can be positioned at the corners of the spreader. The guides are lowered by the raising/lowering device and secured to the bottom corners of the container held by the spreader. Then the spreaded parts of the guides project from the lower end of the container to secure the spreader to the container. The structure of the spreader is simple and the weight is light.Type: GrantFiled: December 9, 1992Date of Patent: October 11, 1994Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.Inventors: Shinji Hara, Kiyoshi Fujiwara, Toru Takehara, Masaharu Kawaguchi, Masayasu Miyake
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Patent number: 5314291Abstract: A load balancer adapted to set the load of an article to substantially zero by utilizing an air pressure, and provided with a balance cylinder unit consisting of air brakes, a balance cylinder and a weight sensing cylinder. This balance cylinder unit is formed by arranging the balance cylinder and weight sensing cylinder on the same axis, and air brakes on both sides of the balance cylinder.Type: GrantFiled: September 10, 1992Date of Patent: May 24, 1994Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.Inventors: Hirotaka Ohashi, Toru Yasunobe
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Patent number: 5245937Abstract: A method of burning a combustible solid residue from a chemical plant, which comprises feeding a slurry of combustible solid residues in an oil, the amount of the oil being at least 0.5 part by weight per part by weight of the combustible solid residues, into a burner in a combustion furnace comprised of a main combustion chamber having the burner in its arch, a secondary combustion chamber formed in the lower portion of the main combustion chamber, and a flue gas duct provided beneath and following the secondary combustion chamber, burning the residue in the main combustion chamber, conducting the combustion gas into the secondary combustion chamber, and allowing it to reside at a temperature 800.degree. to 1000.degree. C. for at least 0.5 second.Type: GrantFiled: May 29, 1990Date of Patent: September 21, 1993Assignees: Mitsui Engineering & Shipbuilding Co., Ltd., Mitsui Petrochemical Industries, Ltd.Inventors: Noriaki Nakase, Masao Koyama, Masahiro Inada, Toshiaki Masaoka, Tohoru Abiko, Kenji Takahashi
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Patent number: 5227799Abstract: A road void search radar system includes a rotary encoder, a radar controller, an analyzer, and a recording unit. The rotary encoder generates a pulse signal having a period corresponding to a predetermined distance interval traveled by a vehicle. The radar controller outputs a wave every time the pulse signal is supplied from the rotary encoder. The analyzer analyzes an underground state by processing the output signal received from the radar controller. The recording unit records digital data signals and analyzes results.Type: GrantFiled: March 9, 1992Date of Patent: July 13, 1993Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.Inventors: Noriaki Kimura, Kanji Murasawa, Masuo Konishi
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Patent number: 5222839Abstract: An improved method for underwater reclamation is disclosed. Dredged mud sent under pressure by an earth and sand conveying device is treated with solidifying material, and before it is solidified, it is directly fed to an underwater reclaiming apparatus. The treated mud is fed through a discharge port of the underwater reclaiming apparatus, while the discharge port is always maintained embedded at a constant depth in a previously deposited underwater reclamation mud layer at the bottom of the water. An apparatus for underwater reclamation that is suitable for practicing the improved method is also disclosed.Type: GrantFiled: June 10, 1991Date of Patent: June 29, 1993Assignees: Fujita Corporation, Mitsui Engineering and Shipbuilding Co., Ltd., Onoda Chemico Co. Ltd., Harada Co., Ltd.Inventors: Kazunori Ishida, Yasutaka Nakai, Motoyoshi Ishii, Taisuke Kato, Kiyoyuki Abe