Patents by Inventor Yasutaka Sakai

Yasutaka Sakai 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: 20240149640
    Abstract: A vehicle air conditioning system includes a refrigerant circuit, a heat medium circuit, a vehicle-interior heat exchanger, a vehicle-exterior heat exchanger including a first heat exchanger and a second heat exchanger disposed in series with respect to a flow of air generated by an air blower, a switching unit, a detection unit for detecting a degree of frost formation, and a control device. The operation mode includes a defrosting mode in which the heat medium in the high-temperature medium circuit is supplied to a defrosting target to be selected as either the first or second heat exchanger by the operation of the switching unit. The control device selects, as the defrosting target, the first heat exchanger in preference to the second heat exchanger when determined that both the first and the second heat exchangers need to be defrosted.
    Type: Application
    Filed: March 29, 2022
    Publication date: May 9, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Hirotaka TANABE, Takayuki KOBAYASHI, Yasutaka AOKI, Tomoki HASE, Hideaki TATENOI, Masayuki SAKAI, Michiaki NAKANISHI
  • Publication number: 20240146161
    Abstract: A magnetic geared electrical machine includes: a stator; a magnetic pole piece rotor including a plurality of magnetic pole pieces disposed radially inward of the stator; an inner rotor including a plurality of rotor magnets, disposed radially inward of the plurality of magnetic pole pieces, and configured to rotate at a higher speed than the magnetic pole piece rotor; and a fan for cooling at least one of the stator, the magnetic pole piece rotor, or the inner rotor. The magnetic pole piece rotor further includes a power transmission shaft disposed on one side in an axial direction relative to the plurality of magnetic pole pieces, and configured to transmit rotational power to and from an external device. The fan is disposed in the inner rotor on an opposite side to the power transmission shaft with the rotor magnet therebetween in the axial direction.
    Type: Application
    Filed: June 14, 2022
    Publication date: May 2, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masayuki SAKAI, Yasutaka AOKI, Akihiko UMEDA, Atsushi YUGE
  • Publication number: 20240097546
    Abstract: A magnetic geared electrical machine includes: a stator including a stator coil; a first rotor including a plurality of pole pieces; a second rotor including a plurality of rotor magnets, and arranged opposite to the stator across the first rotor in a radial direction; a housing having a first inlet opening and a second inlet opening, and supporting the stator; a first inlet cavity defined by at least the housing so as to communicate with the first inlet opening provided in the housing and with a first radial gap between the stator and the first rotor; and a second inlet cavity defined by at least the housing so as to communicate with the second inlet opening provided in the housing and with a second radial gap between the first rotor and the second rotor.
    Type: Application
    Filed: January 25, 2022
    Publication date: March 21, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masayuki Sakai, Yasutaka Aoki, Atsushi Yuge, Takatoshi Matsushita
  • Patent number: 11217430
    Abstract: A plasma processing apparatus comprises a processing chamber, a gas supply unit, a power supply unit and a frequency control unit. The processing chamber accommodates a target object. The gas supply unit supplies a processing gas into the processing chamber. The power supply unit supplies a power of a predetermined frequency band into the processing chamber to generate plasma of the processing gas in the processing chamber. The frequency control unit sweeps a frequency of the power supplied into the processing chamber by the power supply unit from a first frequency to a second frequency at the time of generating the plasma of the processing gas in the processing chamber.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: January 4, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Masaki Inoue, Koji Koyama, Yasutaka Sakai
  • Publication number: 20200135430
    Abstract: A plasma processing apparatus comprises a processing chamber, a gas supply unit, a power supply unit and a frequency control unit. The processing chamber accommodates a target object. The gas supply unit supplies a processing gas into the processing chamber. The power supply unit supplies a power of a predetermined frequency band into the processing chamber to generate plasma of the processing gas in the processing chamber. The frequency control unit sweeps a frequency of the power supplied into the processing chamber by the power supply unit from a first frequency to a second frequency at the time of generating the plasma of the processing gas in the processing chamber.
    Type: Application
    Filed: September 6, 2019
    Publication date: April 30, 2020
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Masaki INOUE, Koji KOYAMA, Yasutaka SAKAI
  • Patent number: 10305129
    Abstract: A fuel battery system includes a fuel battery, an electric storage, a voltage adjuster, a pump, an abnormity detector, and circuitry. The fuel battery generates electricity using fuel gas and oxidant gas. The voltage adjuster is connected to at least one of the fuel battery and the electric storage. The voltage adjuster is configured to adjust voltage output from the fuel battery or the electric storage to output the adjusted voltage to a load. The pump supplies the oxidant gas to the fuel battery using electric power output from at least one of the fuel battery and the electric storage. The voltage adjuster is connected between the fuel battery and the pump. The abnormity detector detects abnormity in the voltage adjuster. The circuitry is configured to restrict the electric power supplied to the pump in a case where the abnormity detector detects the abnormity in the voltage adjuster.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: May 28, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yasutaka Sakai, Kuniaki Ojima, Masaaki Komatsu
  • Patent number: 9889766
    Abstract: An electric power system includes an electric power generator, a first converter, an electric energy storage device, and a first converter controller. The first converter controller is to correct a target output of the electric power generator based on a charging margin so as to control an output of the electric power generator via the first converter so that an input electric power to the electric energy storage device does not exceed an input electric power threshold of the electric energy storage device or to correct the target output of the electric power generator based on a discharging margin so as to control the output of the electric power generator via the first converter so that an output electric power from the electric energy storage device does not exceed an output electric power threshold of the electric energy storage device.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: February 13, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Shuichi Kazuno, Hibiki Saeki, Yasushi Kojima, Yasutaka Sakai
  • Patent number: 9796270
    Abstract: A power supply system includes a fuel cell, a power storage device, a first voltage adjusting device, a second voltage adjusting device, and a controller. The controller is to control the first voltage adjusting device and the second voltage adjusting device. The controller is to switch the second voltage adjusting device from a direct coupling state to a voltage adjusting state in a case where a first absolute value of a first difference between a secondary voltage of the second voltage adjusting device applied across a load and a fuel cell voltage is less than a predetermined allowable voltage value or in a case where a second absolute value of a second difference between a fuel cell current being to flow from the fuel cell into the first voltage adjusting device and a target current value of the fuel cell current exceeds a predetermined allowable current value.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: October 24, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Shuichi Kazuno, Kenichi Shimizu, Yasutaka Sakai, Takuya Shirasaka, Kosuke Higashitani
  • Patent number: 9776622
    Abstract: A power management device of a power system manages the power generation quantity of the whole power system. A power generation control device controls a power generation device using a power generation command value (Ifccon1req) of the power generation device, said power generation command value having been acquired from the power management device via a first signal system, and a parameter (Ibat) that is directly acquired from a parameter acquisition unit via a second signal system.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: October 3, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Shuichi Kazuno, Yasushi Kojima, Yasutaka Sakai, Hibiki Saeki
  • Patent number: 9759086
    Abstract: Power transmission members, such as synchronous joint members, are each formed by sintering a compact which is molded from a mixture containing metal powder and a binder, as an injection material, by metal powder injection molding. Flow promotion recesses configured to facilitate a flow of the mixture to areas corresponding to power transmission surfaces or the like when the compact is molded are formed in each of two side surfaces of each power transmission member.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: September 12, 2017
    Assignee: IHI Corporation
    Inventors: Satoshi Yoshida, Katsunori Nakagawa, Yasutaka Sakai
  • Publication number: 20170250427
    Abstract: A fuel battery system includes a fuel battery, an electric storage, a voltage adjuster, a pump, an abnormity detector, and circuitry. The fuel battery generates electricity using fuel gas and oxidant gas. The voltage adjuster is connected to at least one of the fuel battery and the electric storage. The voltage adjuster is configured to adjust voltage output from the fuel battery or the electric storage to output the adjusted voltage to a load. The pump supplies the oxidant gas to the fuel battery using electric power output from at least one of the fuel battery and the electric storage. The voltage adjuster is connected between the fuel battery and the pump. The abnormity detector detects abnormity in the voltage adjuster. The circuitry is configured to restrict the electric power supplied to the pump in a case where the abnormity detector detects the abnormity in the voltage adjuster.
    Type: Application
    Filed: January 16, 2017
    Publication date: August 31, 2017
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Yasutaka SAKAI, Kuniaki OJIMA, Masaaki KOMATSU
  • Publication number: 20170158189
    Abstract: A power management device of a power system manages the power generation quantity of the whole power system. A power generation control device controls a power generation device using a power generation command value (Ifccon1req) of the power generation device, said power generation command value having been acquired from the power management device via a first signal system, and a parameter (Ibat) that is directly acquired from a parameter acquisition unit via a second signal system.
    Type: Application
    Filed: July 14, 2014
    Publication date: June 8, 2017
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Shuichi KAZUNO, Yasushi KOJIMA, Yasutaka SAKAI, Hibiki SAEKI
  • Patent number: 9620799
    Abstract: There are provided: a power supply provided with a fuel cell; a fuel cell vehicle; an inverter device capable of supplying electric power that is supplied from the fuel cell to an external load; a radiator; a radiator fan; a dryness detection device that detects a dry condition of the fuel cell; and an ECU that control supply of electric power to the external load. The ECU drives the radiator fan when the dryness detection device detects dryness of the fuel cell while electric power is being supplied from the fuel cell to the external load.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: April 11, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Daishi Igarashi, Morio Kayano, Takuya Shirasaka, Kosuke Higashitani, Kenichi Shimizu, Shuichi Kazuno, Yasutaka Sakai
  • Publication number: 20160009195
    Abstract: An electric power system includes an electric power generator, a first converter, an electric energy storage device, and a first converter controller. The first converter controller is to correct a target output of the electric power generator based on a charging margin so as to control an output of the electric power generator via the first converter so that an input electric power to the electric energy storage device does not exceed an input electric power threshold of the electric energy storage device or to correct the target output of the electric power generator based on a discharging margin so as to control the output of the electric power generator via the first converter so that an output electric power from the electric energy storage device does not exceed an output electric power threshold of the electric energy storage device.
    Type: Application
    Filed: July 10, 2015
    Publication date: January 14, 2016
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Shuichi KAZUNO, Hibiki SAEKI, Yasushi KOJIMA, Yasutaka SAKAI
  • Publication number: 20160001675
    Abstract: A power supply system includes a fuel cell, a power storage device, a first voltage adjusting device, a second voltage adjusting device, and a controller. The controller is to control the first voltage adjusting device and the second voltage adjusting device. The controller is to switch the second voltage adjusting device from a direct coupling state to a voltage adjusting state in a case where a first absolute value of a first difference between a secondary voltage of the second voltage adjusting device applied across a load and a fuel cell voltage is less than a predetermined allowable voltage value or in a case where a second absolute value of a second difference between a fuel cell current being to flow from the fuel cell into the first voltage adjusting device and a target current value of the fuel cell current exceeds a predetermined allowable current value.
    Type: Application
    Filed: June 5, 2015
    Publication date: January 7, 2016
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Shuichi KAZUNO, Kenichi SHIMIZU, Yasutaka SAKAI, Takuya SHIRASAKA, Kosuke HIGASHITANI
  • Publication number: 20150184534
    Abstract: Power transmission members, such as synchronous joint members, are each formed by sintering a compact which is molded from a mixture containing metal powder and a binder, as an injection material, by metal powder injection molding. Flow promotion recesses configured to facilitate a flow of the mixture to areas corresponding to power transmission surfaces or the like when the compact is molded are formed in each of two side surfaces of each power transmission member.
    Type: Application
    Filed: March 16, 2015
    Publication date: July 2, 2015
    Applicant: IHI Corporation
    Inventors: Satoshi YOSHIDA, Katsunori NAKAGAWA, Yasutaka SAKAI
  • Publication number: 20140080024
    Abstract: There are provided: a power supply provided with a fuel cell; a fuel cell vehicle; an inverter device capable of supplying electric power that is supplied from the fuel cell to an external load; a radiator; a radiator fan; a dryness detection device that detects a dry condition of the fuel cell; and an ECU that control supply of electric power to the external load. The ECU drives the radiator fan when the dryness detection device detects dryness of the fuel cell while electric power is being supplied from the fuel cell to the external load.
    Type: Application
    Filed: September 11, 2013
    Publication date: March 20, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Daishi Igarashi, Morio Kayano, Takuya Shirasaka, Kosuke Higashitani, Kenichi Shimizu, Shuichi Kazuno, Yasutaka Sakai
  • Publication number: 20130149129
    Abstract: An exhaust nozzle 9 has nozzle vanes 15 interposed between front and rear exhaust introduction walls 10 and 51. A space 19 is between the wall 51 and a turbine housing 1. A sealing device 25 is arranged upstream, in a direction of exhaust gas, of each through hole 24 provided in the wall 51 for penetration of a vane shaft 16a to prevent exhaust gas in a scroll passage 8 from leaking through the space 19 to a turbine impeller 4. Each of the walls 10 and 51 is disk-shaped, the turbine housing 1 being formed with a shoulder 50 to which the wall 51 is fitted with the space 19.
    Type: Application
    Filed: February 24, 2011
    Publication date: June 13, 2013
    Applicant: IHI Corporation
    Inventors: Yoshimitsu Matsuyama, Tomohiro Inoue, Yasutaka Sakai
  • Publication number: 20100296925
    Abstract: An object of the present invention is to provide, by contriving a housing structure, a housing fastening method and turbocharger capable of keeping down a reduction in fastening force applied by a G-coupling even when housings are exposed to high temperature.
    Type: Application
    Filed: July 17, 2008
    Publication date: November 25, 2010
    Inventor: Yasutaka Sakai
  • Publication number: 20060162885
    Abstract: A paper transparentizing agent, containing at least one amide compound selected from the group consisting of: an amide compound (A) that results from condensation of a monocarboxylic acid and at least one amine compound selected from the group consisting of polyalkylenepolyamines and alkanolamines; an amide compound (B) that results from condensation of at least one monocarboxylic acid, at least one polycarboxylic acid and at least one amine compound selected from the group consisting of polyalkylenepolyamines and alkanolamines; an amide compound (C) that results from condensation of a condensate and a monocarboxylic acid, the condensate resulted from condensation of at least one amine compound selected from the group consisting of polyalkylenepolyamines and alkanolamines, and epichlorohydrin or urea; and an amide compound (D) that results from condensation of a condensate, at least one monocarboxylic acid and at least one polycarboxylic acid, the condensate resulted from condensation of at least one amine co
    Type: Application
    Filed: January 26, 2006
    Publication date: July 27, 2006
    Applicant: Nicca Chemical Co., Ltd.
    Inventors: Yuichi Tomoda, Takashi Tanaka, Yasutaka Sakai