Patents by Inventor Atsushi Naito

Atsushi Naito 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: 20230165485
    Abstract: A biological activity detection sensor is provided that includes a motion detection sensor that detects motion of a living body, a tremor sensor that detects a tremor of the living body, and a base member that can be mounted on the living body. The base member includes a first member that is deformable in accordance with a mounted state on the living body, and a second member that is less deformable than the first member. The tremor sensor is provided in the first member, and the motion detection sensor is provided in the second member.
    Type: Application
    Filed: January 19, 2023
    Publication date: June 1, 2023
    Inventors: Naoki KAWARA, Atsushi NAITO, Yutaka TAKAMARU
  • Publication number: 20230148908
    Abstract: An action state estimation apparatus is provided that includes a sampling portion, a statistic calculation portion, an action state model storage, and an estimation calculation portion. The sampling portion samples a displacement measurement signal within a predetermined time and generates displacement measurement data. The statistic calculation portion calculates a statistic of the displacement measurement data. The action state model storage stores an action state model modeled by associating the statistic with a loaded state of a muscle of the test subject. The estimation calculation portion estimates the loaded state by setting the statistic as an input vector and using the action state model.
    Type: Application
    Filed: January 19, 2023
    Publication date: May 18, 2023
    Inventors: Tatsuhiko MATSUMOTO, Atsushi NAITO, Naoki KAWARA, Yutaka TAKAMARU
  • Publication number: 20230148906
    Abstract: An action state estimation apparatus is provided that includes a sampling portion, an action state model storage, and an estimation calculation portion. The sampling portion samples a displacement measurement signal within a predetermined time and generates displacement measurement data based on the sampled displacement measurement signal. The action state model storage stores an action state model modeled by associating the displacement measurement data with a loaded state of a muscle of the test subject. The estimation calculation portion then estimates the loaded state by setting the displacement measurement data as an input vector and using the action state model.
    Type: Application
    Filed: January 19, 2023
    Publication date: May 18, 2023
    Inventors: Tatsuhiko MATSUMOTO, Atsushi NAITO, Naoki KAWARA, Yutaka TAKAMARU
  • Publication number: 20220287594
    Abstract: A physical activity monitoring device is provided that includes a muscle activity sensor, an acceleration sensor, and a computation unit. The acceleration sensor can be attached to a leg and can output a first monitoring signal corresponding to an activity of the leg. The muscle activity sensor can be attached to the leg and can output a second monitoring signal corresponding to an activity of a muscle and/or a tendon of the leg. The computation unit can detect the load condition of the body of a wearer or user that includes the body position of the wearer or user by using the first monitoring signal and the second monitoring signal.
    Type: Application
    Filed: June 2, 2022
    Publication date: September 15, 2022
    Inventors: Yutaka TAKAMARU, Atsushi NAITO, Naoki KAWARA
  • Patent number: 11437181
    Abstract: A metal film includes portions that are opposed to each other and located away from each other between the first winding and the second winding. The metal film includes the first linear part that is thermally coupled to a housing. The average value of electric resistance per unit length in the peripheral direction of the first linear part of the metal film is greater than an average value of electric resistance per unit length of locations other than the first linear part.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: September 6, 2022
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hiroshi Fukasaku, Shunsuke Ambo, Junya Kaida, Yoshiki Nagata, Takashi Kawashima, Kenji Hayakawa, Yoshikazu Hayashi, Atsushi Naito
  • Publication number: 20210259581
    Abstract: A muscle activity observation apparatus that includes a sensor module and a detection module. The sensor module includes a piezoelectric sensor. Moreover, the piezoelectric sensor has an output that changes in accordance with a tremor of a tendon or a muscle, and an output that changes in accordance with contraction and relaxation of the tendon or the muscle. A detector of the detection module detects an activity state of the tendon or the muscle using a tremor signal and a contraction-relaxation signal output from the piezoelectric sensor.
    Type: Application
    Filed: May 10, 2021
    Publication date: August 26, 2021
    Inventors: Atsushi Naito, Naoki Kawara, Yutaka Takamaru
  • Patent number: 11097592
    Abstract: An on-board electric compressor that comprises: a housing; a compression unit; an electric motor; and an inverter device. The inverter device comprises: an inverter circuit that converts direct current power to alternating current power; and a noise reduction unit that is provided on an input side of the inverter circuit and that reduces common mode noise and normal mode noise that are included in the direct current power. The noise reduction unit comprises: a common mode choke coil; and a smoothing capacitor that, in cooperation with the common mode choke coil, constitutes a low pass filter circuit. The common mode choke coil has: a core that has a first core part and a second core part; a first winding that is wound around the first core part; and a second winding that is wound around the second core part.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: August 24, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Fumihiro Kagawa, Atsushi Naito, Yoshiki Nagata, Shunsuke Ambo, Keiji Yashiro, Kazuhiro Shiraishi
  • Publication number: 20210231115
    Abstract: An electric compressor including a rotary shaft, a compression part, an electric motor, an inverter circuit, a filter element disposed on an input side of the inverter circuit, the filter element including a capacitor connected in parallel to a direct current power source, a holder holding the filter element, a resistor having a lead portion electrically connected to the capacitor, and a housing having an inverter accommodation chamber in which the inverter circuit, the holder, and the capacitor are accommodated. The holder includes a metal plate having an internally threaded screw hole. The resistor is held by the holder the metal plate interposed therebetween with a bolt screwed into the internal threaded screw hole. The holder is fixed to the housing. The holder is interposed between the lead portion and the housing. An insulating heat transfer member is interposed between the metal plate and the housing.
    Type: Application
    Filed: January 25, 2021
    Publication date: July 29, 2021
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Atsushi NAITO, Keiji YASHIRO, Kazuhiro SHIRAISHI, Yusuke KINOSHITA
  • Patent number: 11056262
    Abstract: The present disclosure provides an inductive element capable of lowering a Q-value. An inductive element includes a first cover and a second cover covering an annular core, and a first winding and a second winding wound around a region of the core, the first cover and the second cover. The first cover covers a part of an inner circumferential surface of the core, a part of an outer circumferential surface and an end surface on one end side in an axial direction. The second cover covers a part of the inner circumferential surface of the core, a part of the outer circumferential surface an end surface on the other end side in the axial direction.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: July 6, 2021
    Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, TOKIN Corporation
    Inventors: Michitaka Itaya, Toshiaki Oka, Koki Harada, Yukiyasu Yamauchi, Takuma Terui, Takeshi Harasawa, Atsushi Naito, Keiji Yashiro, Kazuhiro Shiraishi
  • Patent number: 11025141
    Abstract: An on-board electric compressor that comprises: a housing; a compression unit; an electric motor; and an inverter device. The inverter device comprises: an inverter circuit that converts direct current power to alternating current power; and a noise reduction unit that is provided on an input side of the inverter circuit and that reduces common mode noise and normal mode noise that are included in the direct current power The noise reduction unit comprises: a common mode choke coil; and a smoothing capacitor that, in cooperation with the common mode choke coil, constitutes a low pass filter circuit. The common mode choke coil has: a core that has a first core part and a second core part; a first winding that is wound around the first core part; and a second winding that is wound around the second core part.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: June 1, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Fumihiro Kagawa, Atsushi Naito, Yoshiki Nagata, Shunsuke Ambo, Keiji Yashiro, Kazuhiro Shiraishi
  • Publication number: 20200321836
    Abstract: An on-board electric compressor that comprises: a housing; a compression unit; an electric motor; and an inverter device. The inverter device comprises: an inverter circuit that converts direct current power to alternating current power; and a noise reduction unit that is provided on an input side of the inverter circuit and that reduces common mode noise and normal mode noise that are included in the direct current power The noise reduction unit comprises: a common mode choke coil; and a smoothing capacitor that, in cooperation with the common mode choke coil, constitutes a low pass filter circuit. The common mode choke coil has: a core that has a first core part and a second core part; a first winding that is wound around the first core part; and a second winding that is wound around the second core part.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 8, 2020
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Fumihiro KAGAWA, Atsushi NAITO, Yoshiki NAGATA, Shunsuke AMBO, Keiji YASHIRO, Kazuhiro SHIRAISHI
  • Publication number: 20200312532
    Abstract: A metal film includes portions that are opposed to each other and located away from each other between the first winding and the second winding. The metal film includes the first linear part that is thermally coupled to a housing. The average value of electric resistance per unit length in the peripheral direction of the first linear part of the metal film is greater than an average value of electric resistance per unit length of locations other than the first linear part.
    Type: Application
    Filed: March 25, 2020
    Publication date: October 1, 2020
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hiroshi FUKASAKU, Shunsuke AMBO, Junya KAIDA, Yoshiki NAGATA, Takashi KAWASHIMA, Kenji HAYAKAWA, Yoshikazu HAYASHI, Atsushi NAITO
  • Publication number: 20200298654
    Abstract: An on-board electric compressor that comprises: a housing; a compression unit; an electric motor; and an inverter device. The inverter device comprises: an inverter circuit that converts direct current power to alternating current power; and a noise reduction unit that is provided on an input side of the inverter circuit and that reduces common mode noise and normal mode noise that are included in the direct current power. The noise reduction unit comprises: a common mode choke coil; and a smoothing capacitor that, in cooperation with the common mode choke coil, constitutes a low pass filter circuit. The common mode choke coil has: a core that has a first core part and a second core part; a first winding that is wound around the first core part; and a second winding that is wound around the second core part.
    Type: Application
    Filed: March 30, 2017
    Publication date: September 24, 2020
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Fumihiro KAGAWA, Atsushi NAITO, Yoshiki NAGATA, Shunsuke AMBO, Keiji YASHIRO, Kazuhiro SHIRAISHI
  • Patent number: 10541590
    Abstract: A fluid machine includes a housing including a suction port through which fluid is drawn, an electric motor accommodated in the housing, and a drive device configured to drive the electric motor. The drive device includes a circuit board, a heat-generating component, and a metal member. The circuit board includes a pattern wire. The circuit board is opposed to an outer surface of the housing. The heat-generating component is located between the circuit board and the outer surface of the housing and spaced apart from the circuit board. The heat-generating component generates electromagnetic noise. The metal member is at least partially located between the circuit board and the heat-generating component. The metal member is configured to transmit heat from the heat-generating component to the housing and absorb or block the electromagnetic noise.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: January 21, 2020
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Fumihiro Kagawa, Atsushi Naito, Yusuke Kinoshita
  • Patent number: 10277116
    Abstract: This on-vehicle power conversion apparatus is provided with: a power conversion circuit to which DC power is inputted; and a noise reduction unit that is configured to reduce common-mode noise and normal-mode noise which are included in the DC power and that is provided to the input side of the power conversion circuit. The noise reduction unit is provided with: a core having a first core part and a second core part; a common-mode chalk coil having a first winding wire wound around the first core part and a second winding wire wound around the second coil part; and a smoothing capacitor that constitutes a low-pass filter circuit cooperatively with the common-mode chalk coil. The power conversion apparatus is further provided with a damping unit provided at a position intersecting the magnetic path of a magnetic flux leakage.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: April 30, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Atsushi Naito, Fumihiro Kagawa, Yoshiki Nagata, Shunsuke Ambo, Keiji Yashiro, Kazuhiro Shiraishi
  • Publication number: 20190089243
    Abstract: This on-vehicle power conversion apparatus is provided with: a power conversion circuit to which DC power is inputted; and a noise reduction unit that is configured to reduce common- mode noise and normal-mode noise which are included in the DC power and that is provided to the input side of the power conversion circuit. The noise reduction unit is provided with: a core having a first core part and a second core part; a common-mode chalk coil having a first winding wire wound around the first core part and a second winding wire wound around the second coil part; and a smoothing capacitor that constitutes a low-pass filter circuit cooperatively with the common-mode chalk coil. The power conversion apparatus is further provided with a damping unit provided at a position intersecting the magnetic path of a magnetic flux leakage.
    Type: Application
    Filed: March 30, 2017
    Publication date: March 21, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Atsushi NAITO, Fumihiro KAGAWA, Yoshiki NAGATA, Shunsuke AMBO, Keiji YASHIRO, Kazuhiro SHIRAISHI
  • Publication number: 20190006079
    Abstract: The present disclosure provides an inductive element capable of lowering a Q-value. An inductive element includes a first cover and a second cover covering an annular core, and a first winding and a second winding wound around a region of the core, the first cover and the second cover. The first cover covers a part of an inner circumferential surface of the core, a part of an outer circumferential surface and an end surface on one end side in an axial direction. The second cover covers a part of the inner circumferential surface of the core, a part of the outer circumferential surface an end surface on the other end side in the axial direction.
    Type: Application
    Filed: June 20, 2018
    Publication date: January 3, 2019
    Inventors: Michitaka ITAYA, Toshiaki OKA, Koki HARADA, Yukiyasu YAMAUCHI, Takuma TERUI, Takeshi HARASAWA, Atsushi NAITO, Keiji YASHIRO, Kazuhiro SHIRAISHI
  • Patent number: 10003241
    Abstract: A vehicle inverter device is configured to convert DC power to AC power. The vehicle inverter device includes a circuit having switching elements and a noise reducer. The noise reducer is provided on an input side of the circuit and is configured to reduce common mode noise and normal mode noise contained in the DC power. The noise reducer is configured by a common mode choke coil, which includes a core, a first winding wound about a first winding portion of the core, and a second winding wound about a second winding portion of the core.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: June 19, 2018
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Atsushi Naito, Yoshiki Nagata, Fumihiro Kagawa, Shunsuke Ambo
  • Publication number: 20170288512
    Abstract: A fluid machine includes a housing including a suction port through which fluid is drawn, an electric motor accommodated in the housing, and a drive device configured to drive the electric motor. The drive device includes a circuit board, a heat-generating component, and a metal member. The circuit board includes a pattern wire. The circuit board is opposed to an outer surface of the housing. The heat-generating component is located between the circuit board and the outer surface of the housing and spaced apart from the circuit board. The heat-generating component generates electromagnetic noise. The metal member is at least partially located between the circuit board and the heat-generating component. The metal member is configured to transmit heat from the heat-generating component to the housing and absorb or block the electromagnetic noise.
    Type: Application
    Filed: March 29, 2017
    Publication date: October 5, 2017
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Fumihiro KAGAWA, Atsushi NAITO, Yusuke KINOSHITA
  • Patent number: 9625710
    Abstract: The optical element is a long optical element obtained by detaching a long main body part connected to a runner part via a gate part including an optical part from the gate part and chipping the detached main body, the optical part including at least a first optical surface to allow light to pass there through or to reflect light. The first optical surface has a curved surface that is curved on the short direction at least at the longitudinal end, while the first edge of the first optical surface side on the end surface of gate part side in the main body part is curved according to the curved surface example of the first optical surface. The boundary surface between the main body part and the gate part is formed so as to be narrower than the end surface of the gate part side of the main body part.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: April 18, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Atsushi Naito, Hiroshi Takagi, Shinichiro Hara, Toshiyuki Majima, Naoki Kaneko, Takao Arakawa