Patents by Inventor Yuta KOMATSU

Yuta KOMATSU 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).

  • Patent number: 11325389
    Abstract: A liquid ejecting apparatus including a liquid ejecting head that ejects a liquid, a liquid storage portion that stores the liquid, a supply flow path that communicates the liquid ejecting head and the liquid storage portion with each other, and an air chamber that is coupled to the supply flow path through a plurality of flow paths. The supply flow path includes a filter. The plurality of flow paths are, in the supply flow path, connected upstream of the filter, and the air chamber is positioned at a position higher than the filter when in a posture during use.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: May 10, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Koase, Yuta Komatsu
  • Publication number: 20220097397
    Abstract: A recording apparatus including a recording unit that performs recording by discharging a liquid on a medium transported in a transport direction, a liquid storage portion that is disposed on an apparatus front side in an apparatus depth direction and that includes a liquid container that contains the liquid discharged from the recording unit, and a maintenance unit that performs maintenance on the recording unit. In the recording apparatus, the maintenance unit is provided in an end portion area on a first direction side in a width direction, the width direction being a direction intersecting the depth direction, and the liquid storage portion is provided in an end portion area on a second direction side, the second direction side being a side opposite the first direction side in the width direction, the liquid storage portion extending in the depth direction to an occupying area of the maintenance unit.
    Type: Application
    Filed: December 14, 2021
    Publication date: March 31, 2022
    Inventors: Shintaro KOMURO, Nobuhiko SHINOZAKI, Yuta KOMATSU
  • Patent number: 11254137
    Abstract: A recording apparatus including a recording unit that performs recording by discharging a liquid on a medium transported in a transport direction, a liquid storage portion that is disposed on an apparatus front side in an apparatus depth direction and that includes a liquid container that contains the liquid discharged from the recording unit, and a maintenance unit that performs maintenance on the recording unit. In the recording apparatus, the maintenance unit is provided in an end portion area on a first direction side in a width direction, the width direction being a direction intersecting the depth direction, and the liquid storage portion is provided in an end portion area on a second direction side, the second direction side being a side opposite the first direction side in the width direction, the liquid storage portion extending in the depth direction to an occupying area of the maintenance unit.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: February 22, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Shintaro Komuro, Nobuhiko Shinozaki, Yuta Komatsu
  • Publication number: 20210354488
    Abstract: A liquid ejection apparatus includes a liquid ejection head that is detachably attached and ejects a liquid, and a control section that is configured to transmit a delivery request for a new liquid ejection head to a server apparatus via a network.
    Type: Application
    Filed: May 10, 2021
    Publication date: November 18, 2021
    Inventors: Hiroyuki NAKAMURA, Izumi NOZAWA, Yuta KOMATSU
  • Publication number: 20210257647
    Abstract: A fuel cell assembly is mounted on a vehicle via a mounting portion. The fuel cell assembly includes a first fuel cell unit, a first frame portion on which the first fuel cell unit is mounted and fixed, a second fuel cell unit, a second frame portion on which the second fuel cell unit is mounted and fixed, and a connecting portion that connects the first frame portion and the second frame portion such that the second fuel cell unit is located above the first fuel cell unit.
    Type: Application
    Filed: February 12, 2021
    Publication date: August 19, 2021
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, HINO MOTORS, LTD.
    Inventors: Yasuhiko OHHASHI, Hiroshi YAMAGATA, Yuta KOMATSU, Kohei HAMANO
  • Patent number: 11025165
    Abstract: With respect to a failure in voltage sensors each for detecting a high-voltage-side voltage in a DC/DC converter, it is so arranged that a circuit failure of the DC/DC converter is prevented, and that the DC/DC converter is continuingly controlled. Two voltage sensors are included therein each for detecting a high-voltage-side voltage, so that, even when a first voltage sensor for detecting a high-voltage-side voltage on one side fails to work properly, a control device turns on a second switching device, and detects a voltage by a second voltage sensor for detecting the high-voltage-side voltage on the other side, whereby a failure of the voltage sensor for detecting the high-voltage-side voltage is detected.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: June 1, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazushi Maeda, Masaki Sawamura, Hiroaki Tanihara, Nobuhiro Kihara, Yuta Komatsu, Takashi Kaneyama
  • Publication number: 20210060966
    Abstract: A liquid ejecting apparatus including a liquid ejecting head that ejects a liquid, a liquid storage portion that stores the liquid, a supply flow path that communicates the liquid ejecting head and the liquid storage portion with each other, and an air chamber that is coupled to the supply flow path through a plurality of flow paths. The supply flow path includes a filter. The plurality of flow paths are, in the supply flow path, connected upstream of the filter, and the air chamber is positioned at a position higher than the filter when in a posture during use.
    Type: Application
    Filed: August 26, 2020
    Publication date: March 4, 2021
    Inventors: Takashi KOASE, Yuta KOMATSU
  • Patent number: 10910950
    Abstract: A power conversion device including an intermediate capacitor that carries out a charging and discharging operation and a voltage sensor that detects a voltage of the intermediate capacitor, and including a current sensor that detects a current flowing in a reactor, and an abnormality determining unit that determines that there is an abnormality of the voltage sensor using a current value calculated based on a detected value from the current sensor, wherein a gain error, an offset error, and a sticking error of the voltage sensor can be detected.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: February 2, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Nobuhiro Kihara, Yuta Komatsu, Takashi Kaneyama, Masaki Sawamura, Noriyuki Wada, Yuya Tanaka
  • Patent number: 10696058
    Abstract: A liquid supply device includes a first shell having a liquid storage chamber configured to store liquid and a liquid inlet portion through which the liquid is poured to the liquid storage chamber, a second shell that is a different member from the first shell, a holding member for holding a mutual positional relationship between the first shell and the second shell to be constant, and an atmospheric communication channel that makes outside and the liquid storage chamber communicate with each other.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: June 30, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Shoma Kudo, Naomi Kimura, Yusuke Hirasawa, Yuta Komatsu
  • Publication number: 20200198356
    Abstract: A recording apparatus including a recording unit that performs recording by discharging a liquid on a medium transported in a transport direction, a liquid storage portion that is disposed on an apparatus front side in an apparatus depth direction and that includes a liquid container that contains the liquid discharged from the recording unit, and a maintenance unit that performs maintenance on the recording unit. In the recording apparatus, the maintenance unit is provided in an end portion area on a first direction side in a width direction, the width direction being a direction intersecting the depth direction, and the liquid storage portion is provided in an end portion area on a second direction side, the second direction side being a side opposite the first direction side in the width direction, the liquid storage portion extending in the depth direction to an occupying area of the maintenance unit.
    Type: Application
    Filed: December 18, 2019
    Publication date: June 25, 2020
    Inventors: Shintaro KOMURO, Nobuhiko SHINOZAKI, Yuta KOMATSU
  • Publication number: 20200195146
    Abstract: A power conversion device including an intermediate capacitor that carries out a charging and discharging operation and a voltage sensor that detects a voltage of the intermediate capacitor, and including a current sensor that detects a current flowing in a reactor, and an abnormality determining unit that determines that there is an abnormality of the voltage sensor using a current value calculated based on a detected value from the current sensor, wherein a gain error, an offset error, and a sticking error of the voltage sensor can be detected.
    Type: Application
    Filed: May 8, 2017
    Publication date: June 18, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Nobuhiro KIHARA, Yuta KOMATSU, Takashi KANEYAMA, Masaki SAWAMURA, Noriyuki WADA, Yuya TANAKA
  • Publication number: 20200153333
    Abstract: With respect to a failure in voltage sensors each for detecting a high-voltage-side voltage in a DC/DC converter, it is so arranged that a circuit failure of the DC/DC converter is prevented, and that the DC/DC converter is continuingly controlled. Two voltage sensors are included therein each for detecting a high-voltage-side voltage, so that, even when a first voltage sensor for detecting a high-voltage-side voltage on one side fails to work properly, a control device turns on a second switching device, and detects a voltage by a second voltage sensor for detecting the high-voltage-side voltage on the other side, whereby a failure of the voltage sensor for detecting the high-voltage-side voltage is detected.
    Type: Application
    Filed: June 9, 2017
    Publication date: May 14, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kazushi MAEDA, Masaki SAWAMURA, Hiroaki TANIHARA, Nobuhiro KIHARA, Yuta KOMATSU, Takashi KANEYAMA
  • Patent number: 10505459
    Abstract: A power conversion device including: a reactor formed such that a DC winding and a plurality of coupled windings are wound around one magnetic body, one end of the DC winding is connected to a voltage source, one end of each of the plurality of coupled windings is connected to another end of the DC winding, another end of each of the plurality of coupled windings is connected to each intermediate connection point between a plurality of upper and lower arms composed of switching elements, and a control device for controlling the switching elements, wherein switching of the upper arms or the lower arms is controlled in accordance with a magnitude of a duty of the switching operation and a magnitude relationship between DC current ripple and AC current ripple composing current ripple in the coupled windings.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: December 10, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Satoshi Murakami, Yuta Komatsu, Ryosuke Kobayashi
  • Publication number: 20190319541
    Abstract: A power conversion device including: a reactor formed such that a DC winding and a plurality of coupled windings are wound around one magnetic body, one end of the DC winding is connected to a voltage source, one end of each of the plurality of coupled windings is connected to another end of the DC winding, another end of each of the plurality of coupled windings is connected to each intermediate connection point between a plurality of upper and lower arms composed of switching elements, and a control device for controlling the switching elements, wherein switching of the upper arms or the lower arms is controlled in accordance with a magnitude of a duty of the switching operation and a magnitude relationship between DC current ripple and AC current ripple composing current ripple in the coupled windings.
    Type: Application
    Filed: December 22, 2016
    Publication date: October 17, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Satoshi MURAKAMI, Yuta KOMATSU, Ryosuke KOBAYASHI
  • Patent number: 10211745
    Abstract: A first winding, a second winding, a fourth winding, and a fifth winding functioning as a transformer are wound around respective side legs of a three-leg core. Third windings functioning as a DC reactor are wound around a center leg. Winding directions of the first winding, the second winding, and the third windings are set so that magnetic fluxes generated by DC currents flowing through the respective windings merge in the same direction at the center leg, and winding directions of the fourth winding and the fifth winding are set so that magnetic fluxes generated by AC currents flowing through the respective windings cancel each other at the center leg. Thus, the transformer and the DC reactor are integrated using the three-leg core, whereby size reduction and loss reduction of the integrated magnetic component are achieved.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: February 19, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Satoshi Murakami, Masaki Yamada, Ryota Kondo, Takaaki Takahara, Yuta Komatsu
  • Publication number: 20190009569
    Abstract: A liquid supply device includes a first shell having a liquid storage chamber configured to store liquid and a liquid inlet portion through which the liquid is poured to the liquid storage chamber, a second shell that is a different member from the first shell, a holding member for holding a mutual positional relationship between the first shell and the second shell to be constant, and an atmospheric communication channel that makes outside and the liquid storage chamber communicate with each other.
    Type: Application
    Filed: February 23, 2017
    Publication date: January 10, 2019
    Applicant: Seiko Epson Corporation
    Inventors: Shoma KUDO, Naomi KIMURA, Yasuke HIRASAWA, Yuta KOMATSU
  • Publication number: 20180350513
    Abstract: A first winding, a second winding, a fourth winding, and a fifth winding functioning as a transformer are wound around respective side legs of a three-leg core. Third windings functioning as a DC reactor are wound around a center leg. Winding directions of the first winding, the second winding, and the third windings are set so that magnetic fluxes generated by DC currents flowing through the respective windings merge in the same direction at the center leg, and winding directions of the fourth winding and the fifth winding are set so that magnetic fluxes generated by AC currents flowing through the respective windings cancel each other at the center leg. Thus, the transformer and the DC reactor are integrated using the three-leg core, whereby size reduction and loss reduction of the integrated magnetic component are achieved.
    Type: Application
    Filed: October 11, 2016
    Publication date: December 6, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Satoshi MURAKAMI, Masaki YAMADA, Ryota KONDO, Takaaki TAKAHARA, Yuta KOMATSU
  • Publication number: 20180326731
    Abstract: A liquid ejecting apparatus includes: a wiping portion which wipes a nozzle forming surface by relatively moving in a main scanning direction with respect to a recording head; and a controller which moves at least one of the recording head and the wiping member. The controller selects and performs at least one of first wiping processing for wiping the nozzle forming surface until the wiping portion is separated from the nozzle forming surface in the main scanning direction, and second wiping processing for separating the wiping portion from the nozzle forming surface in a retracting direction different from the main scanning direction after wiping the nozzle forming surface until the wiping portion comes into contact with a defined position of the nozzle forming surface.
    Type: Application
    Filed: May 7, 2018
    Publication date: November 15, 2018
    Inventors: Shigenori FUKASAWA, Yasuaki HIRAI, Yuta KOMATSU, Seiji TOJO
  • Patent number: 10128754
    Abstract: In a power conversion apparatus including first to fourth semiconductor switching elements connected in series across both terminals of a high voltage-side capacitor, the third and fourth semiconductor switching elements are connected across both terminals of a low voltage-side capacitor via a reactor, and both terminals of the second and third semiconductor switching elements are connected across a charging-discharging capacitor. This charging-discharging capacitor includes a plurality of capacitor elements connected in parallel via a first wiring and a second wiring. Inductance components or capacitance components of the plurality of capacitor elements when viewed from an outflow-inflow portion of the first wiring and an outflow-inflow portion of the second wiring are different from each other such that the charging-discharging capacitor does not have a parallel resonance point in a driving frequency band but has a parallel resonance point in a noise frequency band.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: November 13, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kengo Nishimura, Satoshi Ishibashi, Yuta Komatsu, Satoshi Murakami
  • Patent number: 10027234
    Abstract: A power conversion device includes switching elements, a reactor, and capacitors in each of which plural capacitor elements are connected in parallel to each other. Then, a carrier frequency used for controlling switching of the switching elements is set so that it is less than series resonance frequencies of all of the capacitor elements in the capacitors, and integer multiples of that frequency are each not equal to a parallel resonance frequency.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: July 17, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuta Komatsu, Ryota Kondo, Masaki Yamada