Patents by Inventor Kiyoshi Fujimoto

Kiyoshi Fujimoto 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).

  • Publication number: 20240085023
    Abstract: A premixed combustion burner including: an outer tube having an inlet opening on a first side in an axial direction and an outlet opening on a second side in the axial direction; an inner tube formed in a cylindrical shape extending in the axial direction and spaced inside the outer tube, and forming a film air flow path between the inner and outer tubes; and a strut extending inward from the inner wall surface of the outer tube and supporting the inner tube. An end of the inner tube on the first side is located further towards the second side than the outer tube inlet opening. An end of the inner tube on the second side is located further towards the first side than the outlet opening of the outer tube. The outer tube, the strut, and the inner tube are formed with a fuel injection flow path.
    Type: Application
    Filed: November 26, 2021
    Publication date: March 14, 2024
    Inventors: Kiyoshi FUJIMOTO, Tomo KAWAKAMI, Kenji MIYAMOTO, Keisuke MIURA, Shinichi FUKUBA
  • Publication number: 20240011635
    Abstract: A combustor includes: a tube plate having an upstream side end face and a downstream side end face that are orthogonal to a combustor axis, in which an air hole passing through the upstream side end face and the downstream side end face is formed in the tube plate; and a fuel injector that injects fuel into air passing through the air hole. The air hole has: a bent channel that curves toward a direction orthogonal to the combustor axis toward the downstream side; and an inclined channel that is connected to the downstream side of the bent channel so as to be continuous therewith, and that extends inclining with respect to the combustor axis and opens to the downstream side end face. A fuel injection position at which the fuel injector injects fuel is located on the downstream side of the upstream end of the bent channel.
    Type: Application
    Filed: September 21, 2023
    Publication date: January 11, 2024
    Inventors: Keisuke MIURA, Shinichi FUKUBA, Keijiro SAITO, Kenji MIYAMOTO, Kenta TANIGUCHI, Kiyoshi FUJIMOTO, Tomo KAWAKAMI
  • Publication number: 20230386687
    Abstract: A fuel assembly according to the present invention includes an end plug disposed on both upper and lower end portions of a fuel rod, and a tie plate that supports at least an upper portion of the end plug. The end plug includes a plurality of support protrusions on a surface of the end plug, and a closed-loop spring having a portion that is inserted through an opening portion formed in the end plug and is stored in a single space formed in the end plug, and a remaining portion protruding to the outside of the end plug. The end plug is supported by the plurality of support protrusions and the closed-loop spring in a state in which the plurality of support protrusions and the closed-loop spring are in contact with an inner wall of an insertion hole formed in the tie plate.
    Type: Application
    Filed: April 26, 2023
    Publication date: November 30, 2023
    Inventors: Kiyoshi FUJIMOTO, Takuji NAGAYOSHI, Hajime FURUICHI, Takeshi MITSUYASU
  • Publication number: 20230374906
    Abstract: A high-temperature part of the present disclosure includes: a high-temperature part body which includes a base and a coating layer formed on a part of a surface of the base; and a protective layer which is formed on at least a part of a surface of the coating layer. The protective layer is formed of a material which is allowed to disappear from a surface of the coating layer under an operation environment of a gas turbine.
    Type: Application
    Filed: May 15, 2023
    Publication date: November 23, 2023
    Inventors: Masahiro WATANABE, Taiki KINOSHITA, Kiyoshi FUJIMOTO, Sosuke NAKAMURA, Norihiko MOTOYAMA, Kenichi HASHIMOTO, Akito KIRA
  • Patent number: 11795876
    Abstract: An outlet seal connects a combustor that combusts a fuel to generate combustion gas and a shroud for a stator. The outlet seal has a gas path surface, a first connection section, and a second connection section. The shape of the gas path surface in a cross section perpendicular to an axis is an arc centered on the axis. The first connection section is formed at a first side in an axial direction and is connected to the combustor. The second connection section is formed at a second side in the axial direction and is connected to the shroud. The gas path surface has an inclined surface that is inclined with respect to the axis in a cross section including the axis, such that the flow-path area of a combustion-gas flow path is reduced toward the second side.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: October 24, 2023
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kenji Sato, Kiyoshi Fujimoto, Norihiko Motoyama, Akihiro Murakami
  • Publication number: 20230228421
    Abstract: A fuel injector has a body extending in an axial direction. The body includes: an axial passage formed so as to extend in the axial direction; a radial passage formed so as to communicate at one end with the axial passage and to open at another end to an outer surface of the body; and an internal passage including a first opening and a second opening open to the outer surface, and formed so as to extend inside the body from the first opening to the second opening. The first opening and the second opening are located opposite to each other across a third opening, through which the radial passage opens to the outer surface, in a circumferential direction centered on an axis of the body.
    Type: Application
    Filed: June 21, 2021
    Publication date: July 20, 2023
    Inventors: Kiyoshi FUJIMOTO, Shinichi FUKUBA, Mitsuhiro NAKAO, Yoshikazu MATSUMURA, Kota YOSHINO, Satoshi TAKIGUCHI, Sosuke NAKAMURA, Shinji AKAMATSU
  • Patent number: 11555457
    Abstract: A fuel control device includes a stem fuel valve opening degree determination unit, a branch line flow rate determination unit, and a correction value determination unit. The stem fuel valve opening degree determination unit is configured to determine an opening degree of a flow rate adjustment valve of a stem fuel supply line. The branch line flow rate determination unit is configured to determine an opening degree of a flow rate adjustment valve of at least one branch line. The correction value determination unit is configured to determine a correction value of the opening degree of the flow rate adjustment valve of the at least one branch line based on a value of a pressure difference between a fuel pressure upstream of a nozzle connected to the at least one branch line and a corrected fuel pressure for a fuel pressure at an outlet.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: January 17, 2023
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kenji Miyamoto, Kotaro Miyauchi, Hisashi Nakahara, Kiyoshi Fujimoto
  • Publication number: 20220371344
    Abstract: A printing apparatus includes a carriage, a carriage mover including a motor to move the carriage, a motor controller configured to control the motor, a power supply configured to selectively apply a first voltage or a second voltage to the motor controller, the second voltage being higher than the first voltage, and a transmitter to transmit a control signal for movement of the carriage when a predetermined control condition is satisfied. The first voltage is a voltage enabling the motor controller to move the carriage at a first speed by the motor. The second voltage is a voltage enabling the motor controller to move the carriage at a second speed by the motor, the second speed being higher than the first speed. The power supply applies the first voltage to the motor controller in a state where the transmitter transmits the control signal.
    Type: Application
    Filed: May 18, 2022
    Publication date: November 24, 2022
    Inventors: Yudai CHIDA, Kiyoshi FUJIMOTO, Kiyomasa IMAIZUMI, Hironari OKAMOTO, Shinya YAMAMOTO, Takayuki MORIKAMI, Masaki YOSHIDA
  • Patent number: 11480339
    Abstract: A combustor for a gas turbine includes: a flange portion to be mounted to a casing; an extension portion having an annular shape and extending from the flange portion along an axial direction of the combustor; a pipe portion having a first end connected to the flange portion and a second end connected to an outer peripheral surface of the extension portion, the pipe portion extending from the first end to the second end at an outer side of the extension portion in a radial direction; and at least one fuel nozzle configured to receive supply of a fuel via the pipe portion and a passage disposed inside the extension portion.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: October 25, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kenta Taniguchi, Kiyoshi Fujimoto, Tatsuya Kowari, Ryota Fukuoka
  • Publication number: 20220290610
    Abstract: An outlet seal connects a combustor that combusts a fuel to generate combustion gas and a shroud for a stator. The outlet seal has a gas path surface, a first connection section, and a second connection section. The shape of the gas path surface in a cross section perpendicular to an axis is an arc centered on the axis. The first connection section is formed at a first side in an axial direction and is connected to the combustor. The second connection section is formed at a second side in the axial direction and is connected to the shroud. The gas path surface has an inclined surface that is inclined with respect to the axis in a cross section including the axis, such that the flow-path area of a combustion-gas flow path is reduced toward the second side.
    Type: Application
    Filed: August 12, 2020
    Publication date: September 15, 2022
    Inventors: Kenji SATO, Kiyoshi FUJIMOTO, Norihiko MOTOYAMA, Akihiro MURAKAMI
  • Patent number: 11326780
    Abstract: A resonant sound absorbing device of a gas turbine combustor includes a plurality of resonance chambers independently disposed side by side in an axial direction of the gas turbine combustor so as to communicate with a gas passage of the gas turbine combustor via acoustic holes. The plurality of resonance chambers include n related resonance chambers each satisfying: 0.9 × ? i = 1 n ? F i n ? F i ? 1.1 × ? i = 1 n ? F i n ( A ) where n is an integer of 2 or more, and Fi is a peak frequency corresponding to a maximum sound absorbing ratio of the ith related resonance chamber of the n related resonance chambers.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: May 10, 2022
    Assignee: MITSUBISHI POWER, LTD.
    Inventors: Kiyoshi Fujimoto, Taiki Kinoshita, Satoshi Mizukami, Yoshinori Wakita, Satoshi Takiguchi, Wataru Kugimiya
  • Publication number: 20220010961
    Abstract: A combustor for a gas turbine includes: a flange portion to be mounted to a casing; an extension portion having an annular shape and extending from the flange portion along an axial direction of the combustor; a pipe portion having a first end connected to the flange portion and a second end connected to an outer peripheral surface of the extension portion, the pipe portion extending from the first end to the second end at an outer side of the extension portion in a radial direction; and at least one fuel nozzle configured to receive supply of a fuel via the pipe portion and a passage disposed inside the extension portion.
    Type: Application
    Filed: November 13, 2019
    Publication date: January 13, 2022
    Inventors: Kenta TANIGUCHI, Kiyoshi FUJIMOTO, Tatsuya KOWARI, Ryota FUKUOKA
  • Publication number: 20210395204
    Abstract: The present invention provides low hygroscopic forms of aripiprazole and processes for the preparation thereof which will not convert to a hydrate or lose their original solubility even when a medicinal preparation containing the anhydrous aripiprazole crystals is stored for an extended period.
    Type: Application
    Filed: January 28, 2021
    Publication date: December 23, 2021
    Inventors: Takuji BANDO, Satoshi AOKI, Junichi KAWASAKI, Makoto ISHIGAMI, Youichi TANIGUCHI, Tsuyoshi YABUUCHI, Kiyoshi FUJIMOTO, Yoshihiro NISHIOKA, Noriyuki KOBAYASHI, Tsutomu FUJIMURA, Masanori TAKAHASHI, Kaoru ABE, Tomonori NAKAGAWA, Koichi SHINHAMA, Naoto UTSUMI, Michiaki TOMINAGA, Yoshihiro OOI, Shohei YAMADA, Kenji TOMIKAWA
  • Patent number: 10844792
    Abstract: To provide a damping device that includes an acoustic liner that forms an acoustic-liner resonant space along an outer periphery of a combustion chamber in which a combustion gas flows, and an acoustic damper provided on an outer peripheral side of the acoustic liner, to form an acoustic-damper resonant space that communicates with the acoustic-liner resonant space. The acoustic liner is formed with a damper opening connected with the acoustic damper for causing the acoustic-liner resonant space and the acoustic-damper resonant space to communicate with each other. The acoustic liner includes a divided portion that is a portion to be divided in a circumferential direction of the combustion chamber by the damper opening, and a continuous portion that is a portion continuous over the circumferential direction of the combustion chamber.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: November 24, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES LTD.
    Inventors: Wataru Kugimiya, Keisuke Matsuyama, Isao Taguchi, Kiyoshi Fujimoto
  • Publication number: 20200291872
    Abstract: A fuel control device includes a stem fuel valve opening degree determination unit, a branch line flow rate determination unit, and a correction value determination unit. The stem fuel valve opening degree determination unit is configured to determine an opening degree of a flow rate adjustment valve of a stem fuel supply line. The branch line flow rate determination unit is configured to determine the opening degree of each flow rate adjustment valve of the branch line based on an operation situation of the gas turbine. The correction value determination unit is configured to determine a correction value of the opening degree of each flow rate adjustment valve of the branch line based on a value of a pressure difference between a fuel pressure upstream of each of nozzles connected to the branch lines respectively and a corrected fuel pressure for the fuel pressure at an outlet.
    Type: Application
    Filed: March 8, 2017
    Publication date: September 17, 2020
    Inventors: Kenji MIYAMOTO, Kotaro MIYAUCHI, Hisashi NAKAHARA, Kiyoshi FUJIMOTO
  • Publication number: 20200123110
    Abstract: The present invention provides low hygroscopic forms of aripiprazole and processes for the preparation thereof which will not convert to a hydrate or lose their original solubility even when a medicinal preparation containing the anhydrous aripiprazole crystals is stored for an extended period.
    Type: Application
    Filed: December 18, 2019
    Publication date: April 23, 2020
    Inventors: Takuji BANDO, Satoshi AOKI, Junichi KAWASAKI, Makoto ISHIGAMI, Youichi TANIGUCHI, Tsuyoshi YABUUCHI, Kiyoshi FUJIMOTO, Yoshihiro NISHIOKA, Noriyuki KOBAYASHI, Tsutomu FUJIMURA, Masanori TAKAHASHI, Kaoru ABE, Tomonori NAKAGAWA, Koichi SHINHAMA, Naoto UTSUMI, Michiaki TOMINAGA, Yoshihiro OOI, Shohei YAMADA, Kenji TOMIKAWA
  • Patent number: 10603936
    Abstract: A printer includes a carriage, a carriage moving mechanism including a motor, a motor driver that controls the motor, a stop instruction device, and an interlock device. The stop instruction device transmits a stop signal for the carriage or stops a driving permission signal for the carriage when a predetermined stop condition is satisfied. The interlock device is interposed between the motor and the motor driver and shuts off the motor from the motor driver after a lapse of a predetermined delay time of transmitting the stop signal or stopping the driving permission signal. The motor driver controls the motor to decelerate the carriage in at least a portion of a period before the delay time has elapsed.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: March 31, 2020
    Assignee: ROLAND DG CORPORATION
    Inventors: Kiyomasa Imaizumi, Kiyoshi Fujimoto, Sachie Muroga
  • Patent number: 10535435
    Abstract: It is possible to achieve self-support of the fuel assembly without an upper grid plate when the fuel assembly is mounted or replaced, and it is also possible to prevent the fuel assembly from floating during a reactor operation. According to the present invention, the lower portion of the lower tie plate 7 as a part of the fuel assembly 3, which is inserted into the fuel support 9, extends, and a stable member 21 is provided around the extension portion 20, and thereby it is possible to achieve the self-support of the fuel assembly without the upper grid plate. In addition, since an increase in a weight due to extension of the lower portion of the lower tie plate 7 can prevent the floating during the reactor operation, a floating preventing mechanism using the upper grid plate is not necessary.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: January 14, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Kiyoshi Fujimoto, Shirou Takahashi
  • Publication number: 20190368730
    Abstract: A resonant sound absorbing device of a gas turbine combustor includes a plurality of resonance chambers independently disposed side by side in an axial direction of the gas turbine combustor so as to communicate with a gas passage of the gas turbine combustor via acoustic holes. The plurality of resonance chambers include n related resonance chambers each satisfying: 0.9 × ? i = 1 n ? F i n ? F i ? 1.1 × ? i = 1 n ? F i n ( A ) where n is an integer of 2 or more, and Fi is a peak frequency corresponding to a maximum sound absorbing ratio of the ith related resonance chamber of the n related resonance chambers.
    Type: Application
    Filed: February 28, 2018
    Publication date: December 5, 2019
    Inventors: Kiyoshi FUJIMOTO, Taiki KINOSHITA, Satoshi MIZUKAMI, Yoshinori WAKITA, Satoshi TAKIGUCHI, Wataru KUGIMIYA
  • Patent number: 10486443
    Abstract: A controller includes a cutter movement controller that controls a value of an electric current to flow in a voice coil motor to apply a first electromagnetic force to a holder in a downward direction for a first time duration, then to apply the first electromagnetic force to the holder in an upward direction for a second time duration shorter than the first time duration, to pause the supply of the electric current to the voice coil motor for a third time duration longer than the second time duration, then to apply a third electromagnetic force, which is smaller than, or equal to, the first electromagnetic force and is an electromagnetic force applied to cut a cutting target, to the holder in the downward direction for a fourth time duration longer than the first time duration, and thus to cause a cutter to contact the cutting target, and a cutting controller that, after a predetermined time duration from the time when the electric current starts to flow in the voice coil motor, controls a carriage and a con
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: November 26, 2019
    Assignee: ROLAND DG CORPORATION
    Inventors: Shinya Yamamoto, Kiyoshi Fujimoto, Masakazu Igarashi