Patents by Inventor Chie Kobayashi

Chie Kobayashi 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: 20260075685
    Abstract: High frequency excitation heating equipment has a first iron core support member disposed inside the iron core, a second iron core support member disposed outside the iron core, and a fastening member fastened while insulating the first and second iron core support members, the first and second iron core support members are acyclic. A high-frequency induction coil disposed around the first iron core support member, the second iron core support member, and the iron core. A power source supplies AC power to the high-frequency induction coil. A function generator generates alternating current. A program adjuster generates a control signal that commands the function generator. At least one of the first and second iron core support members has a temperature sensor, and the measured value of the temperature sensor is input to the program controller, which feedback controls the AC power according to the measured value of the temperature sensor.
    Type: Application
    Filed: May 12, 2025
    Publication date: March 12, 2026
    Inventors: Chie KOBAYASHI, Ryousuke MIKOSHIBA, Takahiro SUMI, Naoyuki KURITA
  • Publication number: 20230386728
    Abstract: Provided is a core for a stationary electromagnetic apparatus, in which a compressive stress load in the laminating direction of amorphous thin strips that form an amorphous core is suppressed so that noise generated by magnetostrictive vibration is reduced while maintaining a space factor of the amorphous core. The core for a stationary electromagnetic apparatus 10 according to the present invention includes: a laminated body 1 formed of amorphous metal thin strips; and a holding member 2 that holds the laminated body 1, in which a width b of the holding member 2 is equal to or more than a width a of the laminated body 1 in a laminating direction.
    Type: Application
    Filed: May 30, 2023
    Publication date: November 30, 2023
    Inventors: Chie KOBAYASHI, Naoyuki KURITA, Kohei YAMAGUCHI, Mizuki OGI
  • Publication number: 20230238166
    Abstract: There is provided a static induction electric apparatus capable of improving smoothnesses of magnetic flux distributions inside iron cores. A stationary induction electric apparatus including wound iron cores and a winding, wherein each of the wound iron cores is a laminated body of magnetic materials that are lap-joined and at least provided with a step lap joint portion on an inner peripheral side of the wound iron core, and gap distances between ends of the step lap joint potion are gradually shortened toward an outer peripheral side of the wound iron core. Although a configuration of the stationary induction electric apparatus is simple, the stationary induction electric apparatus having improved smoothnesses of magnetic flux distributions inside the iron cores can be provided.
    Type: Application
    Filed: November 15, 2022
    Publication date: July 27, 2023
    Inventors: Chie KOBAYASHI, Naoyuki KURITA, Kohei SATO, Toshiaki TAKAHASHI, Hikaru NAKASHIMA
  • Patent number: 10978237
    Abstract: The invention provides a core for a stationary induction apparatus including an amorphous core formed of an amorphous thin magnetic strip arranged inside the core, a silicon steel sheet core formed of a silicon steel sheet arranged on a side surface of the amorphous core, a wear plate arranged on the outermost peripheral surface of the silicon steel sheet core, an amorphous core frame arranged around the amorphous core including a space between the amorphous core and the silicon steel sheet core, and a support frame which supports and fixes the amorphous core and the silicon steel sheet core via the wear plate.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: April 13, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Chie Kobayashi, Akira Nishimizu, Naoyuki Kurita, Akira Yamagishi
  • Patent number: 10665381
    Abstract: An object of the present invention is to improve a mechanical strength and to ensure a low magnetic loss without using a supporting member even when amorphous ribbons are used for an inner core. To attain the object, a stationary induction apparatus core of the present invention includes an inner core formed from the amorphous ribbons and outer cores formed from silicon steel sheets, the outer cores being disposed on two sides of the inner core in a depth direction as opposed to a standing direction of the inner core in such a manner as to sandwich the inner core therebetween.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: May 26, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Chie Kobayashi, Naoyuki Kurita, Akira Yamagishi
  • Publication number: 20180350492
    Abstract: Generation of broken pieces of thin magnetic ribbons is reduced with respect to a joint part of an iron core, which is formed by laminating the thin magnetic ribbons, of a stationary induction apparatus. There is provided an iron core joint structure of the stationary induction apparatus characterized such that in a butt joint part of the iron core, which is configured with the laminated thin magnetic ribbons, of the stationary induction apparatus, a first resin penetrated into the laminated magnetic ribbons is applied to each of butt joint surfaces facing each other, and a second resin is further applied to an outer side of the first resin.
    Type: Application
    Filed: November 18, 2015
    Publication date: December 6, 2018
    Inventors: Akira NISHIMIZU, Naoyuki KURITA, Chie KOBAYASHI, Hisashi MOROOKA
  • Publication number: 20180233267
    Abstract: The invention provides a core for a stationary induction apparatus including an amorphous core formed of an amorphous thin magnetic strip arranged inside the core, a silicon steel sheet core formed of a silicon steel sheet arranged on a side surface of the amorphous core, a wear plate arranged on the outermost peripheral surface of the silicon steel sheet core, an amorphous core frame arranged around the amorphous core including a space between the amorphous core and the silicon steel sheet core, and a support frame which supports and fixes the amorphous core and the silicon steel sheet core via the wear plate.
    Type: Application
    Filed: January 24, 2018
    Publication date: August 16, 2018
    Inventors: Chie KOBAYASHI, Akira NISHIMIZU, Naoyuki KURITA, Akira YAMAGISHI
  • Publication number: 20180204669
    Abstract: An object of the present invention is to improve a mechanical strength and to ensure a low magnetic loss without using a supporting member even when amorphous ribbons are used for an inner core. To attain the object, a stationary induction apparatus core of the present invention includes an inner core formed from the amorphous ribbons and outer cores formed from silicon steel sheets, the outer cores being disposed on two sides of the inner core in a depth direction as opposed to a standing direction of the inner core in such a manner as to sandwich the inner core therebetween.
    Type: Application
    Filed: January 4, 2018
    Publication date: July 19, 2018
    Inventors: Chie KOBAYASHI, Naoyuki KURITA, Akira YAMAGISHI
  • Patent number: 9818526
    Abstract: A wound core for stationary induction apparatus is provided that includes a wound core body, the core body being configured with laminated metal ribbons and provided in an upright manner, and a uniting binder provided on the outer circumference of the wound core body more sparsely toward the upper portion of the core body.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: November 14, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Takahiro Satake, Koji Sasaki, Chie Kobayashi
  • Publication number: 20160172095
    Abstract: A wound core for stationary induction apparatus is provided that includes a wound core body, the core body being configured with laminated metal ribbons and provided in an upright manner, and a uniting binder provided on the outer circumference of the wound core body more sparsely toward the upper portion of the core body.
    Type: Application
    Filed: December 10, 2015
    Publication date: June 16, 2016
    Inventors: Takahiro SATAKE, Koji SASAKI, Chie KOBAYASHI
  • Publication number: 20150054524
    Abstract: A partial discharge measurement device according to the present invention includes a frequency separation unit for separating a partial discharge signal which occurs in an apparatus under diagnosis and is detected by a sensor into the partial discharge signal and a main circuit voltage phase signal, an arithmetic device which receives the partial discharge signal and the main circuit voltage phase signal separated by the frequency separation unit and calculates a partial discharge signal synchronized with a main circuit voltage based on the partial discharge signal and the main circuit voltage phase signal, a power supply device for extracting a voltage obtained by dividing the main circuit voltage and supplying a power supply voltage to the arithmetic device, and a control unit for issuing an instruction for powering on or off at least the arithmetic device to the power supply device.
    Type: Application
    Filed: August 4, 2014
    Publication date: February 26, 2015
    Inventors: Chie KOBAYASHI, Toshiaki ROKUNOHE, Yoshiharu WADA, Go KOBAYASHI, Ken OBAYASHI
  • Publication number: 20140187675
    Abstract: The present invention provides an insulation resin material containing a filler for high voltage equipment includes a polar resin, a hardener, a filler, and fine particles added to at least one of the polar resin and the hardener, and having polar organic substituents exposed at the surface thereof. According to this invention, an insulation resin material for high voltage equipment which is easy to control viscosity, does not cause a problem of filler settling, and provides easy handling in the molding process such as molding, and high voltage equipment using the insulation resin material can be provided.
    Type: Application
    Filed: August 28, 2013
    Publication date: July 3, 2014
    Applicant: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Atsushi OOTAKE, Chie KOBAYASHI, Tetsuji KATO
  • Publication number: 20130076361
    Abstract: To order to provide an RF receiving coil having a structure that can be safely mounted on an object and an MRI apparatus including the RF receiving coil, the RF receiving coil includes a main body having one or more flexible closed conductor loops for receiving a nuclear magnetic resonance signal, a flexible outer cover section that covers the closed conductor loop, a preamplifier section that amplifies the nuclear magnetic resonance signal received by the closed conductor loop, and a housing section in which the preamplifier section is housed and which is more rigid than the outer cover section. The RF receiving coil is mounted on the object in a state where the main body is bent such that the end surfaces of both ends of the main body face each other, and the MRI apparatus performs imaging using such an RF receiving coil.
    Type: Application
    Filed: May 26, 2011
    Publication date: March 28, 2013
    Inventors: Takeshi Taniguchi, Tooru Oosawa, Chie Kobayashi
  • Patent number: 5892515
    Abstract: A shape model as an object to be analyzed and division information used to produce a finite element mesh are entered, and a recognition model is produced by allocating each edge line segmented by structural points of the shape model to any one coordinate axial direction in an orthogonal coordinate system. A mapping model is produced in which an orthogonal lattice is produced on a surface and the inside of an approximated shape model, and is displayed on a screen. The mapping model is modified by a system user in an interactive operation. A finite element mesh is generated from lattice points of the modified mapping model. The data input by the system user is processed in an input/output data processing unit, and shape model data of the object to be analyzed is produced in a shape model producing unit. Based on the division information input by the system user, a finite element mesh is generated on the shape model by a finite element mesh producing unit.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: April 6, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Chie Kobayashi, Ichiro Nishigaki, Yoshifumi Yamashita, Hiromitsu Moriyama, Hiromi Aoyama, Keiko Hoshino, Makoto Onodera
  • Patent number: 5181392
    Abstract: Disclosed is an air conditioner and, in particular, an air conditioner which is capable of blowing out warm air in heating mode. In the air conditioner of this invention, the condenser is thermally separated into an air-upstream-side and an air-downstream-side heat exchanger, and the heat exchange capacity of the air-downstream-side heat exchanger is adjusted, so that, under preset operating conditions, the entire refrigerant in the air-downstream-side heat exchanger can be kept in the superheated-gas phase, thus making it possible to blow out warm air having a temperature higher than the condensation temperature. Further, the refrigerant temperature at the outlet of the air-downstream-side heat exchanger is measured by a temperature sensor, and the revolving speed of the compressor, the revolving speed of the fan, etc., is so controlled that the temperature measured is kept at a level higher than the condensation temperature.
    Type: Grant
    Filed: February 13, 1991
    Date of Patent: January 26, 1993
    Assignee: Hitachi Ltd.
    Inventors: Masaaki Itoh, Hiroaki Matsushima, Hiroshi Kogure, Mitsutaka Shizuya, Chie Kobayashi