Patents by Inventor Hajime YODA

Hajime YODA 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: 11037734
    Abstract: A mounting structure minimizes the influence of displacements, along a length direction of a resistor, in mounting positions of capacitor electrodes on the electrical characteristics of a circuit including a parallel circuit composed of a capacitor and the resistor. The capacitor has first and second electrodes, which respectively include first and second side surface portions disposed in parallel to a length direction of the resistor. The resistor has a first resistance body corresponding to the first side surface portions and a second resistance body corresponding to the second side surface portions that are separately disposed along the length direction and connected in series via a wire, and is mounted so that the first resistance body is positioned directly facing the first side surface portions and the second resistance body is positioned directly facing the second side surface portions.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: June 15, 2021
    Assignee: HIOKI E.E. CORPORATION
    Inventors: Shuhei Yamada, Kazunobu Hayashi, Kenichi Seki, Hajime Yoda, Toshio Heishi
  • Publication number: 20200203080
    Abstract: A mounting structure minimizes the influence of displacements, along a length direction of a resistor, in mounting positions of capacitor electrodes on the electrical characteristics of a circuit including a parallel circuit composed of a capacitor and the resistor. The capacitor has first and second electrodes, which respectively include first and second side surface portions disposed in parallel to a length direction of the resistor. The resistor has a first resistance body corresponding to the first side surface portions and a second resistance body corresponding to the second side surface portions that are separately disposed along the length direction and connected in series via a wire, and is mounted so that the first resistance body is positioned directly facing the first side surface portions and the second resistance body is positioned directly facing the second side surface portions.
    Type: Application
    Filed: December 16, 2019
    Publication date: June 25, 2020
    Applicant: HIOKI E.E. CORPORATION
    Inventors: Shuhei YAMADA, Kazunobu HAYASHI, Kenichi SEKI, Hajime YODA, Toshio HEISHI
  • Patent number: 10670635
    Abstract: A current detector includes a ring-shaped core for inserting a wire; a detection winding on the core; and resistor connectors for connecting a resistor in series to the detection winding. The detection winding has a first winding at a first end and a second winding at a second end that are connected in series. The first winding and second winding each have n (where n is three or higher) first or second unit windings in series. The core surface is partitioned into 2n regions around the core. The first unit windings are formed in odd-numbered regions and the second unit windings are formed in even-numbered regions. A jth (where j is 1 to n) first unit winding from the first end and a jth second unit winding from the second end are not adjacent and are formed with an equal number of turns.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: June 2, 2020
    Assignee: HIOKI DENKI KABUSHIKI KAISHA
    Inventors: Kazunobu Hayashi, Kenichi Seki, Hajime Yoda
  • Patent number: 10663495
    Abstract: An averaging unit includes: a plurality of sensor connectors to which current sensors are detachably connected; an averager that generates an averaged signal for at least two detection voltage signals outputted from the current sensors connected to the sensor connectors; and an outputter that outputs the averaged signal.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: May 26, 2020
    Assignee: HIOKI DENKI KABUSHIKI KAISHA
    Inventors: Yoichiro Takeuchi, Hajime Yoda
  • Patent number: 10288649
    Abstract: A current sensor includes: a magnetic core that surrounds a detected object; a first sensor with a first sub-magnetic core incorporated in the magnetic core and a first winding wound around the first sub-magnetic core; a second sensor with a second sub-magnetic core incorporated in the magnetic core and a second winding wound around the second sub-magnetic core in the opposite direction to the first winding; a signal generator outputting signals to magnetize the first and second windings with inverted phases; a detector outputting a detection signal whose amplitude is proportionate to a current in the detected object based on the difference between first and second voltage signals generated in the first and second windings; and a waveform adjuster that is connected to at least one of the first and the second windings and adjusts the waveform of a voltage signal generated by the connected winding.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: May 14, 2019
    Assignee: HIOKI DENKI KABUSHIKI KAISHA
    Inventors: Kenichi Seki, Kazunobu Hayashi, Hajime Yoda
  • Publication number: 20190004095
    Abstract: A current detector includes a ring-shaped core for inserting a wire; a detection winding on the core; and resistor connectors for connecting a resistor in series to the detection winding. The detection winding has a first winding at a first end and a second winding at a second end that are connected in series. The first winding and second winding each have n (where n is three or higher) first or second unit windings in series. The core surface is partitioned into 2n regions around the core. The first unit windings are formed in odd-numbered regions and the second unit windings are formed in even-numbered regions. A jth (where j is 1 to n) first unit winding from the first end and a jth second unit winding from the second end are not adjacent and are formed with an equal number of turns.
    Type: Application
    Filed: June 28, 2018
    Publication date: January 3, 2019
    Applicant: HIOKI DENKI KABUSHIKI KAISHA
    Inventors: Kazunobu HAYASHI, Kenichi SEKI, Hajime YODA
  • Publication number: 20170115328
    Abstract: A current sensor includes: a magnetic core that surrounds a detected object; a first sensor with a first sub-magnetic core incorporated in the magnetic core and a first winding wound around the first sub-magnetic core; a second sensor with a second sub-magnetic core incorporated in the magnetic core and a second winding wound around the second sub-magnetic core in the opposite direction to the first winding; a signal generator outputting signals to magnetize the first and second windings with inverted phases; a detector outputting a detection signal whose amplitude is proportionate to a current in the detected object based on the difference between first and second voltage signals generated in the first and second windings; and a waveform adjuster that is connected to at least one of the first and the second windings and adjusts the waveform of a voltage signal generated by the connected winding.
    Type: Application
    Filed: October 13, 2016
    Publication date: April 27, 2017
    Applicant: HIOKI DENKI KABUSHIKI KAISHA
    Inventors: Kenichi SEKI, Kazunobu HAYASHI, Hajime YODA
  • Publication number: 20170016938
    Abstract: An averaging unit includes: a plurality of sensor connectors to which current sensors are detachably connected; an averager that generates an averaged signal for at least two detection voltage signals outputted from the current sensors connected to the sensor connectors; and an outputter that outputs the averaged signal.
    Type: Application
    Filed: July 7, 2016
    Publication date: January 19, 2017
    Applicant: HIOKI DENKI KABUSHIKI KAISHA
    Inventors: Yoichiro TAKEUCHI, Hajime YODA