Patents by Inventor Hiroshi Tabuchi
Hiroshi Tabuchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6398042Abstract: There is provided an electronic circuit unit frame 1, an upper guide rail 6 having an upper guide groove 6a and supported vertically movably on an upper face portion of the electronic circuit unit frame 1, a lower guide rail 7 having a lower guide groove portion 7a and fixed to a bottom face portion of the electronic circuit unit frame 1 with a predetermined space F formed together with the upper guide rail 6, and space holding means 9 formed integrally with the upper and lower guide rails 6 and 7 for holding the predetermined space F.Type: GrantFiled: October 10, 2000Date of Patent: June 4, 2002Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hiroshi Tabuchi
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Publication number: 20020060197Abstract: An insertion and removal system in a plug-in unit includes a handle-extension slide element inserted freely into the lever part in an advance or retreat direction to slide in a longitudinal direction of the lever part between an extension position extended from a length of the lever part at the maximum and a shrinkage position nearly corresponding to the length of the lever part; and a locking element arranged on the handle-extension slide element and the front panel, the locking element for locking the handle-extension slide element slid to the shrinkage position on the front panel.Type: ApplicationFiled: February 1, 2001Publication date: May 23, 2002Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventor: Hiroshi Tabuchi
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Publication number: 20020011525Abstract: A front rail is formed by bending a steel sheet. The front rail has a front part 1 having a hole 2, the hole 2 allowing insertion of a dowel pin arranged on a printed circuit board, a top part 3 mounting a guide rail for guiding the printed circuit board thereon, a rear part 4 extending from the top part 3 via a hem 6 formed by folding back the steel sheet, for supporting a lower portion of the top part 3, and a bottom part 5 extending from the rear part 4.Type: ApplicationFiled: February 1, 2001Publication date: January 31, 2002Inventor: Hiroshi Tabuchi
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Patent number: 6162413Abstract: A powdery .alpha.-alumina having an alumina purity of at least 99.8 wt. %, a sodium content of 40 ppm or less and an iron content of 20 ppm or less, which is obtained by grinding aluminum hydroxide which is produced by the Bayer process or a transition alumina which is obtained by precalcining aluminum hydroxide produced by the Bayer process, and calcining the aluminum hydroxide or transition alumina in an atmosphere containing 1 vol. % or more of a hydrogen chloride gas, or an atmosphere containing 1 vol. % or more of a chlorine gas and 0.1 vol. % or more of steam, at a temperature of 600 to 1400.degree. C.Type: GrantFiled: September 8, 1997Date of Patent: December 19, 2000Assignee: Sumitomo Chemical Company, LimitedInventors: Shinji Fujiwara, Hiroshi Tabuchi, Masahide Mohri
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Patent number: 6156095Abstract: The present invention provides a method for producing high purity aluminum by immersing a cooling body in molten aluminum, and forming and growing crystals of the high purity aluminum on the cooling body by rotating the cooling body and introducing bubbles of a gas into the rotating molten aluminum by the rotation of the cooling body.Type: GrantFiled: August 6, 1998Date of Patent: December 5, 2000Assignee: Sumitomo Chemical Company, LimitedInventors: Ichiro Tanaka, Hiroshi Tabuchi, Akihiko Takahashi
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Patent number: 6156092Abstract: The present invention provides a method for producing high purity aluminum by immersing a cooling body in molten aluminum, and forming and growing crystals of the high purity aluminum on the cooling body by rotating the molten aluminum around the cooling body and introducing bubbles of a gas into the rotating molten aluminum.Type: GrantFiled: August 6, 1998Date of Patent: December 5, 2000Assignee: Sumitomo Chemical Company, LimitedInventors: Ichiro Tanaka, Hiroshi Tabuchi, Akihiko Takahashi
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Patent number: 5763109Abstract: A metal matrix composite comprising 2 to 80 volume % of .alpha.-alumina powder as a reinforcement, said .alpha.-alumina powder comprises polyhedral primary particles substantially having no fracture surface, D50 of .alpha.-alumina powder is 0.1 .mu.m to 50 .mu.m and a ratio of D50 to D10 is not more than 2, wherein D10 and D50 are particle sizes at 10% and 50% cumulation from the smallest particle side of a weight cumulative particle size distribution, respectively, and a process for producing the metal matrix composite which comprises infiltrating a molten metal into the .alpha.-alumina powder under pressure or non-pressure.Type: GrantFiled: February 27, 1996Date of Patent: June 9, 1998Assignee: Sumitomo Chemical Company, LimitedInventors: Hiroshi Tabuchi, Akihiko Takahashi
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Patent number: 5587140Abstract: A process of producing a powder of a transition-metal boride includes producing metal boride particles in a molten metal by contacting a molten salt, to which at least one boron compound was added, with the molten metal containing a transition-metallic element selected from the Groups IV and V of the Periodic Table at an atomic ratio of elemental boron to transition-metallic element from 0.5 to 4.0, while maintaining a contact temperature which is not lower than the melting point of the molten metal and which is less than 1000.degree. C., and recovering the particles from the molten metal. According to the present invention, fine powders of the transition-metal boride which contain few agglomerated particles may be easily obtained using relatively inexpensive feed materials, such as the boron oxides, at a low temperature less than 1000.degree. C. without the necessity of a grinding step.Type: GrantFiled: May 16, 1995Date of Patent: December 24, 1996Assignee: Sumitomo Chemical Company, LimitedInventors: Shinji Fujiwara, Hiroshi Tabuchi, Akihiko Takahashi
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Patent number: 5523074Abstract: Polyhedral .alpha.-alumina particles having a particle size on the order of a micrometer and high purity are prepared by maintaining a compression molded aluminum material having, on its surface, a binary compound of aluminum and oxygen atoms or a ternary compound of aluminum, oxygen and hydrogen atoms in an aluminum melt.Type: GrantFiled: July 1, 1993Date of Patent: June 4, 1996Assignee: Sumitomo Chemical Company, LimitedInventors: Akihiko Takahashi, Hiroshi Tabuchi
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Patent number: 5293204Abstract: In a copier having a sheet pick-up roller for picking up sheets one by one from a paper cassette, and a writing section, where an image is written on the sheet, a sheet separation mechanism is disposed between the sheet pick-up roller and the writing section to separate the sheets when a plurality of sheets are picked up in superposition. A sensor is disposed between the separation mechanism and the writing section, the initiation of the writing is timed to occur with the arrival, at the writing section, of the leading end of the area of the sheet in which the toner image is to be written.Type: GrantFiled: November 12, 1992Date of Patent: March 8, 1994Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hiroshi Tabuchi
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Patent number: 5089846Abstract: Electrostatic image forming device according to the present invention is contacted with a surface of a photosensitive drum by way of a positioning member so that it may follow the photosensitive drum in any eccentric condition, and consequently, the position thereof relative to the photosensitive drum is maintained constant, and accordingly, a recorded picture of a high quality is obtained. Further, since the relative positions of the electrostatic image forming device and the photosensitive drum are varied by adjustment of the positioning measure in response to opening and closing operation of an electrophotographic apparatus body, electrostatic image forming device having a short focal length can be used, and the overall size of the electrophotographic apparatus body can be reduced.Type: GrantFiled: February 11, 1991Date of Patent: February 18, 1992Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hiroshi Tabuchi
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Patent number: 4967285Abstract: A method of cutting off recording paper on a facsimile apparatus is disclosed in which the recording paper wound as a roll is sequentially fed through the apparatus so that the paper is cut off by a cutter after the recording on each sheet area of the paper is performed. The method comprises a stop in which the torque of an electric motor is transmitted to a platen roller through a gear train so that the recording on the (n+1) th-sheet area of the recording paper is performed continuously after the recording on the nth-sheet area of the paper; a step in which when the boundary between the nth-sheet area and the (n+1)th-sheet area has reached the cutoff position, the recording on the (n+1)th-sheet area is temporarily stopped and the backlash of the gear train is compensated for by rotating the motor backward; a step in which the recording paper is cut off by the cutter; and a step in which the backlash of the gear train is compensated for again by rotating the motor forward.Type: GrantFiled: November 9, 1989Date of Patent: October 30, 1990Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hiroshi Tabuchi
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Patent number: 4676152Abstract: An apparatus for using hot humid air to prevent the spread of fruit fly infestation in fruits and vegetables. The apparatus includes a treating room, an air chamber located above the treating room and communicating therewith, a temperature and humidity regulator, and a ventilation arrangement. The apparatus allows accurate and uniform control of temperature and humidity, thereby minimizing damage to the treated fruits and vegetables.Type: GrantFiled: December 3, 1985Date of Patent: June 30, 1987Assignees: Takenaka Komuten Co., Starlanes Corp.Inventors: Eiji Tsuji, Norio Igawa, Hiroshi Tabuchi, Tomoji Horiike
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Patent number: 4571125Abstract: A floating offshore structure which is moored at a fixed position on the sea by means of mooring hawsers and anchors connected to the ends thereof respectively for conducting a submarine excavating operation from a deck of the structure. The structure includes a moorage hull part provided with a vertical through-hole formed therein for receiving an excavating drill pipe and the mooring hawsers and a movable hull part connected to the moorage hull part so as to be rotatable within a horizontal plane. The movable hull part is constituted as a hull defining the outer wall of the floating offshore structure and connected with the moorage hull part by inserting it into a moorage hull part receiving hole formed at a position closer to the bow thereof.Type: GrantFiled: March 15, 1985Date of Patent: February 18, 1986Assignee: Mitsui Engineering and Shipbuilding Company, LimitedInventors: Masanao Oshima, Hitoshi Narita, Nobuyoshi Yashima, Hiroshi Tabuchi
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Patent number: 4519728Abstract: A floating offshore structure which is moored at a fixed position on the sea by means of mooring hawsers and anchors connected to the ends thereof respectively for conducting a submarine excavating operation from a deck of the structure. The structure includes a moorage hull part provided with a vertical through-hole formed therein for receiving an excavating drill pipe and the mooring hawsers and a movable hull part connected to the moorage hull part so as to be rotatable within a horizontal plane. The movable hull part is constituted as a hull defining the outer wall of the floating offshore structure and connected with the moorage hull part by inserting it into a moorage hull part receiving hole formed at a position closer to the bow thereof.Type: GrantFiled: March 24, 1983Date of Patent: May 28, 1985Assignee: Mitsui Engineering and Shipbuilding Company, Ltd.Inventors: Masanao Oshima, Hitoshi Narita, Nobuyoshi Yashima, Hiroshi Tabuchi
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Patent number: 4457250Abstract: A floating-type offshore structure, of which the main body comprises a lower hull and plurality of struts mounted on the struts and supporting a platform above the sea level and is moored through mooring wire ropes or chains at a predetermined offshore location, and which is adapted for use under both of an ice-covered and an iceless conditions of the sea by adjusting the amount of ballast water contained in a ballast tank or tanks formed in the lower hull and/or the struts and adapted for causing ice floes to undergo downward flexural failure on account of bending stresses when they move into the sea water along the ice contacting face of the strut which is inclined inwardly toward below.Type: GrantFiled: December 15, 1981Date of Patent: July 3, 1984Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.Inventors: Masanao Oshima, Hiroshi Tabuchi
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Patent number: 4369725Abstract: The disclosed method for increasing the maneuverability of a ship in ice-covered waters is comprised of bringing generally vertical ice-crushing surfaces on one side of a ship into contact with an ice covering in order to create an imbalance of forces between that side of the ship and the ice covering in comparison with the forces between the other side of the ship and the ice covering in order to assist in turning the ship. The generally vertical ice-crushing surfaces are positioned on both a starboard and port side of the hull of the ship in such a manner that they remain out of contact with the ice covering normal straight forward travel. A particular positioning mechanism is utilized in order to bring a generally vertically oriented ice-crushing wall portion into contact with the ice covering.Type: GrantFiled: December 5, 1980Date of Patent: January 25, 1983Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.Inventors: Steven M. Lord, Hiroshi Tabuchi
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Patent number: 4152999Abstract: An ice-breaking apparatus for use in ships and barges operating on icy waters, including nozzles for jetting high pressure fluid, is disclosed. By impinging force or cavitation caused by the high pressure fluid jetted from the nozzles, grooves or cracks are formed on an ice floe, and then, the ice floe is broken from these grooves or cracks by the hull. This ice-breaking apparatus facilitates breakage of ice floes or the like, and when this ice-breaking apparatus is attached, ships or barges for operation on icy waters can be built without increasing dimensions or propulsion powers particularly for navigation on icy waters. The ice-breaking apparatus includes echo distance measuring apparatus for automatically controlling and maintaining the nozzles at optimum positions from the ice-surface.Type: GrantFiled: December 5, 1977Date of Patent: May 8, 1979Assignee: Mitsui Engineering and Shipbuilding Co., Ltd.Inventors: Masanao Oshima, Hiroshi Tabuchi, Tsuneo Inokawa