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).
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Patent number: 11037734Abstract: 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: GrantFiled: December 16, 2019Date of Patent: June 15, 2021Assignee: HIOKI E.E. CORPORATIONInventors: Shuhei Yamada, Kazunobu Hayashi, Kenichi Seki, Hajime Yoda, Toshio Heishi
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Publication number: 20200203080Abstract: 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: ApplicationFiled: December 16, 2019Publication date: June 25, 2020Applicant: HIOKI E.E. CORPORATIONInventors: Shuhei YAMADA, Kazunobu HAYASHI, Kenichi SEKI, Hajime YODA, Toshio HEISHI
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Patent number: 10670635Abstract: 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: GrantFiled: June 28, 2018Date of Patent: June 2, 2020Assignee: HIOKI DENKI KABUSHIKI KAISHAInventors: Kazunobu Hayashi, Kenichi Seki, Hajime Yoda
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Patent number: 10663495Abstract: 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: GrantFiled: July 7, 2016Date of Patent: May 26, 2020Assignee: HIOKI DENKI KABUSHIKI KAISHAInventors: Yoichiro Takeuchi, Hajime Yoda
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Patent number: 10288649Abstract: 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: GrantFiled: October 13, 2016Date of Patent: May 14, 2019Assignee: HIOKI DENKI KABUSHIKI KAISHAInventors: Kenichi Seki, Kazunobu Hayashi, Hajime Yoda
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Publication number: 20190004095Abstract: 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: ApplicationFiled: June 28, 2018Publication date: January 3, 2019Applicant: HIOKI DENKI KABUSHIKI KAISHAInventors: Kazunobu HAYASHI, Kenichi SEKI, Hajime YODA
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Publication number: 20170115328Abstract: 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: ApplicationFiled: October 13, 2016Publication date: April 27, 2017Applicant: HIOKI DENKI KABUSHIKI KAISHAInventors: Kenichi SEKI, Kazunobu HAYASHI, Hajime YODA
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Publication number: 20170016938Abstract: 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: ApplicationFiled: July 7, 2016Publication date: January 19, 2017Applicant: HIOKI DENKI KABUSHIKI KAISHAInventors: Yoichiro TAKEUCHI, Hajime YODA