Patents by Inventor Hiroyuki Daiku
Hiroyuki Daiku 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: 10720256Abstract: Provided is an electron beam irradiating device capable of emitting an electron beam from an electron beam generation source surrounded by a vacuum chamber to outside of the vacuum chamber through an electron beam exit window. The electron beam exit window includes: a grid; a window foil allowing the electron beam to pass therethrough; and a frame-shaped pressing member pressing the window foil against the grid. The surface of the grid has a groove section having an annular shape. A metal gasket is pressed between the groove section and the window foil.Type: GrantFiled: November 2, 2017Date of Patent: July 21, 2020Assignee: HITACHI ZOSEN CORPORATIONInventors: Hiroyuki Daiku, Ichiro Sakai, Norihiro Inoue, Yohei Terasaka
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Patent number: 10568980Abstract: A nozzle-type electron beam irradiation device includes a vacuum chamber, an electron beam generator disposed in the vacuum chamber, and a vacuum nozzle that is connected to the vacuum chamber so as to guide an electron beam from the electron beam generator and emit the electron beam to the outside. The nozzle-type electron beam irradiation device includes a high-vacuum pump capable of sucking gas from the vicinity of the connecting part of the vacuum nozzle in the vacuum chamber.Type: GrantFiled: December 26, 2016Date of Patent: February 25, 2020Assignee: HITACHI ZOSEN CORPORATIONInventors: Takeshi Noda, Ichiro Sakai, Hiroyuki Daiku
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Publication number: 20190287693Abstract: Provided is an electron beam irradiating device capable of emitting an electron beam from an electron beam generation source surrounded by a vacuum chamber to outside of the vacuum chamber through an electron beam exit window. The electron beam exit window includes: a grid; a window foil allowing the electron beam to pass therethrough; and a frame-shaped pressing member pressing the window foil against the grid. The surface of the grid has a groove section having an annular shape. A metal gasket is pressed between the groove section and the window foil.Type: ApplicationFiled: November 2, 2017Publication date: September 19, 2019Inventors: Hiroyuki DAIKU, Ichiro SAKAI, Norihiro INOUE, Yohei TERASAKA
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Patent number: 10398794Abstract: An internal surface electron beam-irradiating device sterilizes the internal surface of a vial by irradiation with an electron beam. The internal surface electron beam-irradiating device includes an electron beam generator that generates the electron beam, a vacuum chamber containing the electron beam generator, an output window that emits the electron beam to the outside of the vacuum chamber, and an extension nozzle that guides an electron cloud formed by extending the electron beam emitted from the output window. The extension nozzle includes a leaking section that leaks the electron cloud. The leaking section includes empty portions that discharge part of the electron cloud to the outside, and a component portion that guides the electron cloud into the leaking section.Type: GrantFiled: November 15, 2016Date of Patent: September 3, 2019Assignee: HITACHI ZOSEN CORPORATIONInventors: Hiroyuki Daiku, Takeshi Noda, Ichiro Sakai
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Publication number: 20190134241Abstract: A nozzle-type electron beam irradiation device includes a vacuum chamber, an electron beam generator disposed in the vacuum chamber, and a vacuum nozzle that is connected to the vacuum chamber so as to guide an electron beam from the electron beam generator and emit the electron beam to the outside. The nozzle-type electron beam irradiation device includes a high-vacuum pump capable of sucking gas from the vicinity of the connecting part of the vacuum nozzle in the vacuum chamber.Type: ApplicationFiled: December 26, 2016Publication date: May 9, 2019Inventors: Takeshi NODA, Ichiro SAKAI, Hiroyuki DAIKU
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Publication number: 20190015535Abstract: An internal surface electron beam-irradiating device sterilizes the internal surface of a vial by irradiation with an electron beam. The internal surface electron beam-irradiating device includes an electron beam generator that generates the electron beam, a vacuum chamber containing the electron beam generator, an output window that emits the electron beam to the outside of the vacuum chamber, and an extension nozzle that guides an electron cloud formed by extending the electron beam emitted from the output window. The extension nozzle includes a leaking section that leaks the electron cloud. The leaking section includes empty portions that discharge part of the electron cloud to the outside, and a component portion that guides the electron cloud into the leaking section.Type: ApplicationFiled: November 15, 2016Publication date: January 17, 2019Inventors: Hiroyuki DAIKU, Takeshi NODA, Ichiro SAKAI
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Patent number: 7544283Abstract: A system for removing a thin metal film is disclosed. The system comprises an inclined metal plate electrode for guiding a downward electrolyte flow, an auxiliary electrode placed on either the upstream or downstream side of the metal plate electrode such that a part of the auxiliary electrode is immersed into the electrolyte, and a power supply for applying a DC voltage to the both electrodes. The system is used to remove a metal thin film on the surface of an insulator by making the electrolyte flowing down the metal plate electrode strike against the metal thin film while the DC voltage is applied to the metal plate electrode and auxiliary electrode.Type: GrantFiled: April 11, 2005Date of Patent: June 9, 2009Assignee: Hitachi Zosen CorporationInventors: Hiroyuki Daiku, Hidehiko Maehata, Masanori Tsukahara, Shogo Hamada, Tetsuya Inoue, Hiroshi Hamasaki
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Publication number: 20050179023Abstract: A system for removing a thin metal film is disclosed. The system comprises an inclined metal plate electrode for guiding a downward electrolyte flow, an auxiliary electrode placed on either the upstream or downstream side of the metal plate electrode such that a part of the auxiliary electrode is immersed into the electrolyte, and a power supply for applying a DC voltage to the both electrodes. The system is used to remove a metal thin film on the surface of an insulator by making the electrolyte flowing down the metal plate electrode strike against the metal thin film while the DC voltage is applied to the metal plate electrode and auxiliary electrode.Type: ApplicationFiled: April 11, 2005Publication date: August 18, 2005Inventors: Hiroyuki Daiku, Hidehiko Maehata, Masanori Tsukahara, Shogo Hamada, Tetsuya Inoue, Hiroshi Hamasaki
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Patent number: 6903294Abstract: A first and second electrostatic sorting sections are arranged below a tribo-electrifying device in this order in a vertical direction to form a sorting electrostatic field between a drum electrode and an opposing electrode. Plastic pieces separated from the other plastic pieces by the sorting electrostatic field in the first electrostatic separating section are introduced into a sorting electrostatic field in the second electrostatic separating section for second separation, thereby increasing the separation purity and recovery rate of plastic pieces.Type: GrantFiled: September 4, 2000Date of Patent: June 7, 2005Assignee: HItachi Zosen CorporationInventors: Hiroyuki Daiku, Masanori Tsukahara, Tetsuya Inoue, Hidehiko Maehata
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Patent number: 6774332Abstract: A composite sorting apparatus for separating conductive materials from non-conductive materials comprising a drum electrode, needle-shaped electrodes, and a plate-shaped electrode, wherein the plurality of needle-shaped electrodes are arranged so that the interval X in cm (in) between discharge sections of adjacent needle-shaped electrodes with respect to the distance L1 in cm (in) from the tips of discharge sections to the drum electrode meets 0<X/L1≦3.Type: GrantFiled: May 20, 2002Date of Patent: August 10, 2004Assignee: Hitachi Zosen CorporationInventors: Hidehiko Maehata, Tetsuya Inoue, Shogo Hamada, Daisuke Tamakoshi, Hiroyuki Daiku
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Patent number: 6720514Abstract: A feed tray (22) for guiding tribo electrified plastic pieces (2) to a drum electrode (6) is provided with a vibrator (23), thereby making it possible to vibrate the plastic pieces (2) to form a thin uniform layer, and to reliably apply appropriate image force and centrifugal force to the plastic pieces (2) fed to the drum electrode (6); thus, the plastic pieces (2) can be separated according to kind with high precision.Type: GrantFiled: March 13, 2002Date of Patent: April 13, 2004Assignee: Hitachi Zosen CorporationInventors: Tetsuya Inoue, Hiroyuki Daiku, Masanori Tsukahara, Hiroaki Arai, Hidehiko Maehata, Tsuyoshi Kato
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Publication number: 20020189977Abstract: In a composite sorting apparatus comprising a drum electrode (4), needle-shaped electrodes (5), and a plate-shaped electrode (9) to separate a mixture (A) of a copper wire (A2) and plastic pieces (A1) into the copper wire (A2) and the plastic pieces (A1), the plurality of needle-shaped electrodes (5) are arranged so that the interval X(cm) between discharge sections (5a) of the adjacent needle-shaped electrodes (5) with respect to the distance L1(cm) from the tips of the discharge sections (5a) to the drum electrode (4) meets 0<X/L1≦3. Further, the discharge sections (5a) are each formed so that an area formed on the drum electrode (4) and to which corona ions are applied has a diameter three times as large as the distance L1(cm). Furthermore, a voltage (V1) applied between the needle-shaped electrodes (5) and the drum electrode (4) is set to meet 0.5 (kV/cm)≦V1/L1≦10 (kV/cm).Type: ApplicationFiled: May 20, 2002Publication date: December 19, 2002Inventors: Hidehiko Maehata, Tetsuya Inoue, Shogo Hamada, Daisuke Tamakoshi, Hiroyuki Daiku
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Patent number: 6467628Abstract: A device for electrostatically separating different kinds of crushed plastic pieces and correctly sorting them according to kind. The device has a classifying section (40) for classifying plastic pieces according to size, a frictional charging device (17), a pair of drum type electrostatic separating devices (41), and collecting sections (26) disposed below the electrostatic separating devices. Partition walls (52-55) for partitioning the collecting sections are constructed to be horizontally movable according to the fall positions associated with the polarity and amount of electric charge of each plastic piece (16). Therefore, separation can be correctly effected without changing the voltage from a high voltage power source device (24).Type: GrantFiled: January 18, 2001Date of Patent: October 22, 2002Assignee: Hitachi Zosen CorporationInventors: Hidehiko Maehata, Tetsuya Inoue, Hiroyuki Daiku, Masanori Tsukahara, Daisuke Tamakoshi
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Patent number: 6365857Abstract: A conveyor (3) feeds batches of plastic chips (2) in feeding amounts W1 to a charging device (4). After the plastic chips (2) have been stirred and charged inside the charging device (4) for a certain period of time T, they are ejected in batches and fed continuously by a screw feeder (20) to a drum electrode (5) at a feeding amount per unit time W2. The feeding amount per unit time W2 is adjusted so as to satisfy W1/T≦W2≦v×B×H×D where v is the rotation speed of the drum electrode (5), B is a width of the drum electrode (5), H is an average thickness of the plastic chips (2) that have been fed onto the drum electrode (5), and D is a bulk density of the plastic chips (2).Type: GrantFiled: July 31, 2000Date of Patent: April 2, 2002Assignee: Hitachi Zosen CorporationInventors: Hidehiko Maehata, Tetsuya Inoue, Hiroyuki Daiku, Daisuke Tamakoshi
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Patent number: 6145934Abstract: A method comprising a step to form a hole (2) for charging a breaking substance (4) into an object to be fractured (1), a step to insert a pair of electrodes (6) having a thin metal wire (5) connected between ends thereof into the hole (2), a step to dispose the breaking substance (4) and the thin metal wire (5) into a bag-like container (22) made of rubber at a stage to supply electric energy accumulated in a capacitor to the electrodes (6) for fusing and vaporizing the thin metal wire (5), thereby swelling a volume of the breaking substance (4) and breaking the object to be fractured (1), and a step to fit the bag-like container (22) into the hole (2). This method assures secure transmission of an expansion force to the object to be fractured even when the hole formed in the object to be fractured is deformed.Type: GrantFiled: January 23, 1998Date of Patent: November 14, 2000Assignee: Hitachi Zosen CorporationInventors: Hiroaki Arai, Hidehiko Maehata, Tetsuya Inoue, Tsuyoshi Kato, Hiroyuki Daiku
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Patent number: 5078542Abstract: The present invention provides an apparatus to prevent the entrance of aquatic species into the intake watercourse having a U-shaped cross section with a narrow bottom and a wide surface, in which oppositely facing electrodes are installed vertically along the side walls on both sides of the intake watercourse, and the distance between the upper ends of the electrodes is made greater than the distance between the lower ends of the electrodes, and a voltage is impressed between the both electrodes. Since the electric barrier intensity is smallest at the surface of water and becomes greater as it goes toward the bottom of water, the river fish moving around the bottom of water make a U-turn when they reach the strong electric barrier, or alternatively, after reaching the strong electric barrier, they move upward to where the electric barrier is weaker and then make a U-turn, thereby the entrance of aquatic species into the intake watercourse can be prevented.Type: GrantFiled: February 23, 1991Date of Patent: January 7, 1992Assignees: Hitachi Zosen Corporation, The Kansai Electric Power Co., Inc.Inventors: Tohru Yoshikawa, Syohei Shimodaira, Mamoru Abe, Hidehiko Maehata, Hiroaki Arai, Hiroyuki Daiku, Masanori Tsukahara, Seiji Ohtani