Patents by Inventor Tomoyuki Hirata

Tomoyuki Hirata 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: 20200165709
    Abstract: A gas turbine disk material according to the present invention contains: C: from 0.05 to 0.15%; Ni: from 0.25 to 1.50%; Cr: from 9.0 to 12.0%; Mo: from 0.50 to 0.90%; W: from 1.0 to 2.0%; V: from 0.10 to 0.30%; Nb: from 0.01 to 0.10%; Co: from 0.01 to 4.0%; B: from 0.0005 to 0.010%; N: from 0.01 to 0.05%; Mn: 0.40% or less; Si: 0.10% or less; and Al: 0.020% or less. A balance is of Fe and unavoidable impurities. Additionally, as a heat treatment method, a quenching temperature of a forged material having the component composition is set within a range from 1050 to 1150° C.
    Type: Application
    Filed: September 19, 2018
    Publication date: May 28, 2020
    Inventors: Hiroki TANAKA, Yuichi HIRAKAWA, Yoshikuni KADOYA, Tomoyuki HIRATA, Takayoshi IIJIMA, Kazuharu HIROKAWA
  • Patent number: 10590806
    Abstract: An exhaust system and a gas turbine, in which the exhaust system includes an exhaust casing; an outer diffuser supported inside the exhaust casing; an inner diffuser disposed inside the outer diffuser to form an exhaust gas flow passage between the inner diffuser and the outer diffuser; a strut cover coupled at a first end to the outer diffuser and coupled at a second end to the inner diffuser; and a second cooling air introduction port provided in the exhaust casing, further on the downstream side of the exhaust gas flow passage than the strut cover. Furthermore, a non-perforated partition member having an annular shape is arranged so as to cover the outer side of the outer diffuser and is supported by the exhaust casing to form a cooling air flow passage.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: March 17, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Tetsu Konishi, Yoshiyuki I, Tomoyuki Hirata, Tomoto Nagai, Yoshiko Takei
  • Patent number: 10479217
    Abstract: An object is to provide an in-train transmission control system which can minimize delay in transmission of command data to devices further than the conventional art, in which a central unit provided in any car of a train formation composed of one or more cars and controlling operation of the entire train formation transmits command data to devices provided in some or all of the cars and in which the devices transmit device data to the central unit. The control system comprises relay device provided in the car, and line concentrator allowing the command data to pass therethrough, and when receiving device data from the devices, transmitting the device data to the relay device. The relay device aggregates the device data received from the line concentrator to transmit the aggregated data to the central unit.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: November 19, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shogo Tatsumi, Shingo Honda, Tomoyuki Hirata
  • Patent number: 10352244
    Abstract: A gas turbine combustor comprising a plurality of cooling air passages (27A) through which bled pressurized air flows from downstream of a combustion gas flow toward upstream, the plurality of cooling air passages (27A) being disposed in a wall portion (26) side by side and aligned in a flow direction of a combustion gas; wherein the plurality of cooling air passages (27A) are divided via a passage transition groove portion (33) into upstream cooling air passages (27A1) disposed closer to bled pressurized air inlet holes (30a) and downstream cooling air passages (27A2) disposed closer to bled pressurized air outlet holes (30b), and center lines (C1) of the upstream cooling air passages are non-collinear with center lines (C2) of the downstream cooling air passages.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: July 16, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Yoshiaki Yamaguchi, Satoshi Mizukami, Tomoyuki Hirata, Junichiro Masada, Tetsu Konishi, Kazumasa Takata, Hiroyuki Yamazaki, Takuya Suzuki, Shinya Ishikawa
  • Publication number: 20190202485
    Abstract: A terminal device which receives command information from a central device in a train information management system, includes a transmission-reception unit which transmits and receives the command information to and from the central device or other terminal device and periodically receives command information from a plurality of central devices, a control unit which determines whether or not management information, which is information on a train composition set by a central device which is a transmission source, regarding the received command information, is normal command information and determines command information to be adopted based on a priority set to the central device which is the transmission source when receiving the normal command information from the plurality of central devices, and a storage unit which stores information on the priorities set to the plurality of central devices.
    Type: Application
    Filed: September 23, 2016
    Publication date: July 4, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Ryoichi Watanabe, Tomoyuki Hirata, Tomoaki Ikejima, Hiromi Goda, Shogo Tatsumi
  • Publication number: 20180105066
    Abstract: An object is to provide an in-train transmission control system which can minimize delay in transmission of command data to devices further than the conventional art, in which a central unit provided in any car of a train formation composed of one or more cars and controlling operation of the entire train formation transmits command data to devices provided in some or all of the cars and in which the devices transmit device data to the central unit. The control system comprises relay device provided in the car, and line concentrator allowing the command data to pass therethrough, and when receiving device data from the devices, transmitting the device data to the relay device. The relay device aggregates the device data received from the line concentrator to transmit the aggregated data to the central unit.
    Type: Application
    Filed: May 13, 2015
    Publication date: April 19, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shogo TATSUMI, Shingo HONDA, Tomoyuki HIRATA
  • Publication number: 20170241295
    Abstract: The present invention provides an exhaust system and a gas turbine. The exhaust system includes: an exhaust casing; an outer diffuser supported inside the exhaust casing; an inner diffuser disposed inside the outer diffuser to form an exhaust gas flow passage between the inner diffuser and the outer diffuser; a strut cover coupled at one end to the outer diffuser and coupled at the other end to the inner diffuser; a second cooling air introduction port provided in the exhaust casing, further on the downstream side of the exhaust gas flow passage than the strut cover; a partition member having an annular shape so as to cover the outer side of the outer diffuser and supported by the exhaust casing; and a cooling air flow passage.
    Type: Application
    Filed: October 20, 2015
    Publication date: August 24, 2017
    Inventors: Tetsu KONISHI, Yoshiyuki I, Tomoyuki HIRATA, Tomoto NAGAI, Yoshiko TAKEI
  • Patent number: 9677406
    Abstract: The purpose of the invention is to provide a rotor blade support structure, wherein the concentration of stress near the rotor blade groove in which the rotor blade is embedded is limited even as increase in production cost is limited. A rotor blade support structure, in which rotor blades (30) are embedded in rotor blade grooves (10) provided on a rotor disc (1), wherein the rotor blade groove (10) is provided with circular direction grooves (13) that extend more in the circular direction of the rotor disc than upward from the bottom (14), and shaft center direction grooves (15) that are provided on the end faces (1a, 1b) of the rotor disc (1) in the center of the bottom (14) in the circular direction of the rotor disc and that extend towards the rotor disc shaft center.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: June 13, 2017
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Tomoyuki Hirata, Eigo Katou, Hidekatsu Atsumi
  • Publication number: 20170044981
    Abstract: A gas turbine combustor comprising a plurality of cooling air passages (27A) through which bled pressurized air flows from downstream of a combustion gas flow toward upstream, the plurality of cooling air passages (27A) being disposed in a wall portion (26) side by side and aligned in a flow direction of a combustion gas; wherein the plurality of cooling air passages (27A) are divided via a passage transition groove portion (33) into upstream cooling air passages (27A1) disposed closer to bled pressurized air inlet holes (30a) and downstream cooling air passages (27A2) disposed closer to bled pressurized air outlet holes (30b), and center lines (C1) of the upstream cooling air passages are non-collinear with center lines (C2) of the downstream cooling air passages.
    Type: Application
    Filed: April 25, 2014
    Publication date: February 16, 2017
    Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Yoshiaki Yamaguchi, Satoshi Mizukami, Tomoyuki Hirata, Junichiro Masada, Tetsu Konishi, Kazumasa Takata, Hiroyuki Yamazaki, Takuya Suzuki, Shinya Ishikawa
  • Patent number: 8899934
    Abstract: The rotor structure is provided with a rotation shaft body in which a blade groove is formed at an outer circumference part, and extends in a circumferential direction of the axis line, and a plurality of blade bodies which are arrayed in the circumferential direction at the outer circumference part of the rotation shaft body, wherein a blade fixing piece is installed so as to be a positioned between at least one set of adjacent two blade bodies in the circumferential direction inside the blade groove, a projected part is formed at where either an opening wall part or the groove opening side of the blade groove and the blade fixing piece, and a recessed part which is fitted into the projected part is formed at where the other one of them.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: December 2, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Tomoyuki Hirata, Kazuharu Hirokawa, Yoshimasa Takaoka
  • Patent number: 8883824
    Abstract: Disclosed is a compound represented by Formula (I) or a pharmaceutically acceptable salt thereof: wherein R1 is 1: a C3-8 cycloalkyl C1-4 alkyl group, 2: a C7-14 aralkyl group, in which the aryl moiety thereof is optionally substituted with the same or different 1 to 3 groups selected from the group consisting of: (a) halogen, (b) C1-4 alkyl, which is optionally substituted with 1 to 3 fluorine atoms, (c) C1-4 alkoxy, which is optionally substituted with 1 to 3 fluorine atoms, and (d) C1-4 alkylcarbonyl, which is optionally substituted with C1-4 alkoxy, 3: a five-to ten-membered heteroaryl-C1-4 alkyl group, in which the heteroaryl moiety thereof is optionally substituted with the same or different 1 to 3 groups selected from the group consisting of: (a) halogen, and (b) C1-4 alkyl, or 4: a C6-10 aryl C2-6 alkenyl group; and R2 is a cyano group or a nitro group.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: November 11, 2014
    Assignee: Sumitomo Dainippon Pharma Co., Ltd.
    Inventors: Akihito Fujii, Kazumi Niidome, Chiaki Migihashi, Toshiyuki Kamei, Takafumi Matsumoto, Tomoyuki Hirata
  • Publication number: 20140219806
    Abstract: The purpose of the invention is to provide a rotor blade support structure, wherein the concentration of stress near the rotor blade groove in which the rotor blade is embedded is limited even as increase in production cost is limited. A rotor blade support structure, in which rotor blades (30) are embedded in rotor blade grooves (10) provided on a rotor disc (1), wherein the rotor blade groove (10) is provided with circular direction grooves (13) that extend more in the circular direction of the rotor disc than upward from the bottom (14), and shaft center direction grooves (15) that are provided on the end faces (1a, 1b) of the rotor disc (1) in the center of the bottom (14) in the circular direction of the rotor disc and that extend towards the rotor disc shaft center.
    Type: Application
    Filed: October 16, 2012
    Publication date: August 7, 2014
    Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Tomoyuki Hirata, Eigo Katou, Hidekatsu Atsumi
  • Publication number: 20120251329
    Abstract: The rotor structure is provided with a rotation shaft body in which a blade groove is formed at an outer circumference part, and extends in a circumferential direction of the axis line, and a plurality of blade bodies which are arrayed in the circumferential direction at the outer circumference part of the rotation shaft body, wherein a blade fixing piece is installed so as to be a positioned between at least one set of adjacent two blade bodies in the circumferential direction inside the blade groove, a projected part is formed at where either an opening wall part or the groove opening side of the blade groove and the blade fixing piece, and a recessed part which is fitted into the projected part is formed at where the other one of them.
    Type: Application
    Filed: January 31, 2012
    Publication date: October 4, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Tomoyuki Hirata, Kazuharu Hirokawa, Yoshimasa Takaoka
  • Publication number: 20120059012
    Abstract: Disclosed is a compound represented by Formula (I) or a pharmaceutically acceptable salt thereof: wherein R1 is 1: a C3-8 cycloalkyl C1-4 alkyl group, 2: a C7-14 aralkyl group, in which the aryl moiety thereof is optionally substituted with the same or different 1 to 3 groups selected from the group consisting of: (a) halogen, (b) C1-4 alkyl, which is optionally substituted with 1 to 3 fluorine atoms, (c) C1-4 alkoxy, which is optionally substituted with 1 to 3 fluorine atoms, and (d) C1-4 alkylcarbonyl, which is optionally substituted with C1-4 alkoxy, 3: a five- to ten-membered heteroaryl-C1-4 alkyl group, in which the heteroaryl moiety thereof is optionally substituted with the same or different 1 to 3 groups selected from the group consisting of: (a) halogen, and (b) C1-4 alkyl, or 4: a C6-10 aryl C2-6 alkenyl group; and R2 is a cyano group or a nitro group.
    Type: Application
    Filed: May 12, 2010
    Publication date: March 8, 2012
    Applicant: Dainippon Sumitomo Pharma Co., Ltd.
    Inventors: Akihito Fujii, Kazumi Niidome, Chiaki Migihashi, Toshiyuki Kamei, Takafumi Matsumoto, Tomoyuki Hirata