Patents by Inventor Yohei Shirakawa

Yohei Shirakawa 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: 20240077334
    Abstract: A position detection device configured to detect a position of a moving member that moves back and forth in a predetermined moving direction is provided with an exciting coil arranged to extend in the moving direction along the moving member, and a detection coil that, by an action of a magnetic field generated by the exciting coil, can detect a position, in the moving direction, of a detection object portion provided on the moving member within a predetermined detection range. A plurality of the detection coils are arranged side by side in a direction perpendicular to an extending direction of the exciting coil. A plurality of the detection object portions are provided at different positions in the moving direction so as to respectively correspond to the plurality of the detection coils, and the respective detection ranges of the plurality of the detection coils are offset in the moving direction of the moving member.
    Type: Application
    Filed: August 24, 2023
    Publication date: March 7, 2024
    Inventors: Yohei SHIRAKAWA, Yukio IKEDA
  • Publication number: 20230384124
    Abstract: A position detection device for detecting a position of a shaft moving forward and backward in an axial direction is provided with a detection object attached to the shaft, an excitation coil for generating an alternating magnetic field, a power supply for supplying an alternating current to the excitation coil, and a detection coil arranged to be extending along an axial direction of the shaft and being interlinked with a magnetic flux of the alternating magnetic field. The excitation coil is arranged to surround the detection coil, and the detection coil includes a distorted curved portion being distorted with respect to a sine wave curve in such a manner that a peak value of a voltage induced in the detection coil changes into a sine wave shape when the shaft moves along the axial direction at a constant speed.
    Type: Application
    Filed: May 19, 2023
    Publication date: November 30, 2023
    Inventors: Yohei SHIRAKAWA, Yuta SUGIYAMA
  • Patent number: 11815563
    Abstract: A multicore cable inspection method of specifying a correspondence relationship among ends of insulated electric wires exposed from both ends of a multicore cable, the method including: inputting, by capacitance coupling, an inspection signal to the end of the insulated wire to be inspected among the ends of the insulated wires exposed at the one end of the multicore cable; inputting, by the capacitive coupling, each of first and second signals, each of which has a phase different from the inspection signal, to the ends of the two insulated wires other than the insulated wire to be inspected; measuring a voltage of an output signal outputted from the capacitive coupling from each end of the insulated wires exposed at the other end of the multicore cable; and specifying the other-side end of the insulated wire to be inspected. At this time, an amplitude of a signal obtained by adding the inspection signal and the first and second signals is smaller than that of the inspection signal.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: November 14, 2023
    Assignee: Proterial, Ltd.
    Inventors: Yohei Shirakawa, Yoshitake Ageishi
  • Publication number: 20230294972
    Abstract: In a production system 100, containers have hollow main bodies 1a having openings at their top parts and caps 1b for closing the openings. The production system 100 includes a conveyor line L for conveying the containers 1, a capper 5 for attaching the caps 1b to the main bodies 1a of the containers 1 on the conveyor line L, a reading apparatus 18 configured to read first information attached to top surfaces of the caps 1b of the containers 1 for identifying the containers 1 on the conveyor line L at one or more predetermined points after the capper 5, and a memory apparatus 52 configured to store linked together the first information of the containers 1, second information attached to the main bodies 1a of the containers 1 for identifying the main bodies 1a, and times at which the containers 1 passed the one or more predetermined points.
    Type: Application
    Filed: July 19, 2021
    Publication date: September 21, 2023
    Applicant: Suntory Holdings Limited
    Inventors: Tatsutoshi Higo, Naoki Furukawa, Takahiro Matsuzaki, Yohei Shirakawa
  • Publication number: 20230251112
    Abstract: A position detection device for detecting a position of a shaft moving forward and backward in an axial direction is provided with a detection object attached to the shaft, an excitation coil for generating an alternating magnetic field, and a detection coil arranged along an axial direction of the shaft. A magnitude of a voltage induced in the detection coil varies in accordance with a position of the detection object.
    Type: Application
    Filed: February 8, 2023
    Publication date: August 10, 2023
    Inventors: Yohei SHIRAKAWA, Yuta SUGIYAMA, Yukio IKEDA
  • Publication number: 20230150571
    Abstract: A stroke sensor is provided with two disk-shaped rotors configured to rotate with a stroke of a measuring object, a rotation detecting unit that detects rotations of the two rotors, respectively, and a stroke position detecting unit that detects the stroke position of the measuring object based on the rotations of the two rotors detected by the rotation detecting unit. At least one of the two rotors is in direct contact with the measuring object. The two rotors are provided side by side in an arrangement direction perpendicular to an axial direction of the measuring object and are provided so as to be adjacent to the measuring object in an arrangement perpendicular direction perpendicular to the axial direction and the arrangement direction. Each of the two rotors is provided in such a manner that its rotation axis direction is inclined with respect to the arrangement direction.
    Type: Application
    Filed: November 16, 2022
    Publication date: May 18, 2023
    Applicant: Hitachi Metals, Ltd.
    Inventor: Yohei SHIRAKAWA
  • Patent number: 11630163
    Abstract: A multi-core cable testing device is configured to specify a correspondence between ends of an insulated wire at both ends of a multi-core cable including insulated wires. The device includes a signal input unit for inputting a test signal by capacitive coupling into one end of the insulated wire as a testing object at one end of the multi-core cable, a signal output unit for outputting the test signal by capacitive coupling from each end of the insulated wires at the other end of the multicore cable, a correspondence specifying unit for measuring a voltage of the test signal from the signal output unit and for specifying an other side end of the insulated wire based on a measured voltage. At least one of the signal input unit and the signal output unit includes a signal transmission cable for transmitting the test signal and a substrate configured to be connected to the signal transmission cable.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: April 18, 2023
    Assignee: HITACHI METALS, LTD.
    Inventor: Yohei Shirakawa
  • Patent number: 11570906
    Abstract: An assembling method for a multi-core cable having a plurality of electrical insulated wires is designed to connect one-end-portions of the electrical insulated wires to electrode patterns, respectively, of one circuit board, correspondingly connect other-end-portions of the electrical insulated wires to electrode patterns, respectively, of the other circuit board, compute intersection coefficients on one end side and the other of the cable, and iterate interchanging connecting destinations for the one-end-portions of the electrical insulated wires, correspondingly interchanging connecting destinations for the other-end-portions of the electrical insulated wires, and computing the intersection coefficients on the one end side and the other of the cable.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: January 31, 2023
    Assignee: HITACHI METALS, LTD.
    Inventors: Yohei Shirakawa, Yoshitake Ageishi, Kanako Suzuki, Mikio Okoshi
  • Publication number: 20220317207
    Abstract: A coupling capacitance estimation method includes arranging numerous input electrodes to respectively face first exposed end portions of numerous insulated wires exposed at one end of a multicore cable, arranging numerous output electrodes to respectively face second exposed end portions of the numerous insulated wires exposed at another end of the multicore cable, performing measurement of a voltage value of a measurement output signal that is output by capacitive coupling from the second exposed end portion through the output electrode when a measurement input signal is input by capacitive coupling from the input electrode to the first exposed end portion, with a plurality of predetermined different combinations of the input electrodes to input the measurement input signal and the output electrodes to output the measurement output signal, and based on the measured voltage values of a plurality of the measurement output signals, estimating respective coupling capacitances between the numerous input electrode
    Type: Application
    Filed: March 22, 2022
    Publication date: October 6, 2022
    Inventors: Yohei SHIRAKAWA, Seiji KOJIMA
  • Publication number: 20210307179
    Abstract: An assembling method for a multi-core cable having a plurality of electrical insulated wires is designed to connect one-end-portions of the electrical insulated wires to electrode patterns, respectively, of one circuit board, correspondingly connect other-end-portions of the electrical insulated wires to electrode patterns, respectively, of the other circuit board, compute intersection coefficients on one end side and the other of the cable, and iterate interchanging connecting destinations for the one-end-portions of the electrical insulated wires, correspondingly interchanging connecting destinations for the other-end-portions of the electrical insulated wires, and computing the intersection coefficients on the one end side and the other of the cable.
    Type: Application
    Filed: March 23, 2021
    Publication date: September 30, 2021
    Inventors: Yohei Shirakawa, Yoshitake Ageishi, Kanako Suzuki, Mikio Okoshi
  • Publication number: 20210263112
    Abstract: A multicore cable inspection method of specifying a correspondence relationship among ends of insulated electric wires exposed from both ends of a multicore cable, the method including: inputting, by capacitance coupling, an inspection signal to the end of the insulated wire to be inspected among the ends of the insulated wires exposed at the one end of the multicore cable; inputting, by the capacitive coupling, each of first and second signals, each of which has a phase different from the inspection signal, to the ends of the two insulated wires other than the insulated wire to be inspected; measuring a voltage of an output signal outputted from the capacitive coupling from each end of the insulated wires exposed at the other end of the multicore cable; and specifying the other-side end of the insulated wire to be inspected. At this time, an amplitude of a signal obtained by adding the inspection signal and the first and second signals is smaller than that of the inspection signal.
    Type: Application
    Filed: February 9, 2021
    Publication date: August 26, 2021
    Inventors: Yohei Shirakawa, Yoshitake Ageishi
  • Patent number: 11009560
    Abstract: A method for testing a multicore cable including a single common shield covering plural insulated wires to identify a correspondence relation between one end portion and the other end portion of the insulated wires exposed from both ends of the multicore cable. The testing method includes allowing the common shield to have a same potential as a measurement system ground, inputting a test signal, by capacitive coupling, to an end portion of the insulated wire under test among end portions of the insulated wires exposed at one end of the multicore cable, and measuring voltages of output signals output by capacitive coupling respectively from end portions of the insulated wires exposed at the other end of the multicore cable, and identifying the other end portion of the insulated wire under test based on the measured voltages.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: May 18, 2021
    Assignee: Hitachi Metals, Ltd.
    Inventors: Yohei Shirakawa, Yoshitake Ageishi
  • Patent number: 10992068
    Abstract: A solder with ground bar includes a first unit and a second unit. The first unit includes a first ground bar and a first solder layer attached to one side of the first ground bar. The second unit includes a second ground bar and a second solder layer attached to one side of the second ground bar. The first unit and the second unit are arranged in such a manner that the first solder layer and the second solder layer face each other. The first solder layer and the second solder layer are partially joined together.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: April 27, 2021
    Assignee: HITACHI METALS, LTD.
    Inventors: Kanako Suzuki, Mikio Okoshi, Yohei Shirakawa, Yoshitake Ageishi
  • Patent number: 10962607
    Abstract: A method for testing a multicore cable including not less than three insulated wires to identify a correspondence relationship between one end portion and an other end portion of the insulated wires exposed from both ends of the multicore cable. The method includes inputting a test signal, by capacitive coupling, to an end portion of the tested insulated wire among end portions of the insulated wires exposed at one end of the multicore cable, inputting a phase-inverted test signal in an opposite phase to that of the test signal, by capacitive coupling, to an end portion of the insulated wire, other than the end portion of the tested insulated wire, and measuring voltages of output signals output respectively from end portions of the insulated wires exposed at the other end of the multicore cable to identify an other end portion of the tested insulated wire based on the measured voltages.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: March 30, 2021
    Assignee: Hitachi Metals, Ltd.
    Inventors: Yohei Shirakawa, Yoshitake Ageishi
  • Patent number: 10895607
    Abstract: A method for testing a multicore cable that includes a single common shield covering plural insulated wires. The testing method includes inputting a test signal, by capacitive coupling, to an end portion of the insulated wire under test among end portions of the insulated wires exposed at one end of the multicore cable, and measuring voltages of output signals output by capacitive coupling respectively from end portions of the insulated wires exposed at the other end of the multicore cable, and identifying the other end portion of the insulated wire under test based on the measured voltages. The voltages of output signals are measured in a state that an output variation reduction capacitive element is connected in series with a coupling capacitance generated by the capacitive coupling.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: January 19, 2021
    Assignee: Hitachi Metals, Ltd.
    Inventors: Yohei Shirakawa, Yoshitake Ageishi
  • Publication number: 20200266559
    Abstract: A solder with ground bar includes a first unit and a second unit. The first unit includes a first ground bar and a first solder layer attached to one side of the first ground bar. The second unit includes a second ground bar and a second solder layer attached to one side of the second ground bar. The first unit and the second unit are arranged in such a manner that the first solder layer and the second solder layer face each other. The first solder layer and the second solder layer are partially joined together.
    Type: Application
    Filed: February 11, 2020
    Publication date: August 20, 2020
    Inventors: Kanako SUZUKI, Mikio OKOSHI, Yohei SHIRAKAWA, Yoshitake AGEISHI
  • Publication number: 20190250202
    Abstract: A method for testing a multicore cable that includes a single common shield covering plural insulated wires. The testing method includes inputting a test signal, by capacitive coupling, to an end portion of the insulated wire under test among end portions of the insulated wires exposed at one end of the multicore cable, and measuring voltages of output signals output by capacitive coupling respectively from end portions of the insulated wires exposed at the other end of the multicore cable, and identifying the other end portion of the insulated wire under test based on the measured voltages. The voltages of output signals are measured in a state that an output variation reduction capacitive element is connected in series with a coupling capacitance generated by the capacitive coupling.
    Type: Application
    Filed: November 21, 2018
    Publication date: August 15, 2019
    Applicant: Hitachi Metals, Ltd.
    Inventors: Yohei SHIRAKAWA, Yoshitake AGEISHI
  • Publication number: 20190212380
    Abstract: A method for testing a multicore cable including a single common shield covering plural insulated wires to identify a correspondence relation between one end portion and the other end portion of the insulated wires exposed from both ends of the multicore cable. The testing method includes allowing the common shield to have a same potential as a measurement system ground, inputting a test signal, by capacitive coupling, to an end portion of the insulated wire under test among end portions of the insulated wires exposed at one end of the multicore cable, and measuring voltages of output signals output by capacitive coupling respectively from end portions of the insulated wires exposed at the other end of the multicore cable, and identifying the other end portion of the insulated wire under test based on the measured voltages.
    Type: Application
    Filed: November 21, 2018
    Publication date: July 11, 2019
    Applicant: HITACHI METALS, LTD.
    Inventors: Yohei SHIRAKAWA, Yoshitake AGEISHI
  • Publication number: 20190212379
    Abstract: A method for testing a multicore cable including not less than three insulated wires to identify a correspondence relationship between one end portion and an other end portion of the insulated wires exposed from both ends of the multicore cable. The method includes inputting a test signal, by capacitive coupling, to an end portion of the tested insulated wire among end portions of the insulated wires exposed at one end of the multicore cable, inputting a phase-inverted test signal in an opposite phase to that of the test signal, by capacitive coupling, to an end portion of the insulated wire, other than the end portion of the tested insulated wire, and measuring voltages of output signals output respectively from end portions of the insulated wires exposed at the other end of the multicore cable to identify an other end portion of the tested insulated wire based on the measured voltages.
    Type: Application
    Filed: November 21, 2018
    Publication date: July 11, 2019
    Applicant: HITACHI METALS, LTD.
    Inventors: Yohei SHIRAKAWA, Yoshitake AGEISHI
  • Patent number: 10270676
    Abstract: A signal detecting device provided in a connector at an end of a communication cable or in a communication device to which the connector is connected. The signal detecting device includes a detection circuit that branches and extracts a portion of a signal transmitted through the communication cable and indicates existence of a data communication based on the extracted signal, and a self-diagnostic circuit that inputs a diagnostic signal into the detection circuit upon diagnosis of the detection circuit.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: April 23, 2019
    Assignee: HITACHI METALS, LTD.
    Inventors: Yohei Shirakawa, Koki Hirano, Yoshitake Ageishi, Yuki Haga