Patents by Inventor Koji MAZAKI

Koji MAZAKI 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: 20220169193
    Abstract: A power supply system having a plurality of power systems is provided with a power output section in each of the power systems, an electrical load in each of the power systems, operating from power supplied by the power output section, main paths that connect the power output sections of adjacent ones of the power systems, an inter-system switch that establishes a conducting condition between the adjacent power systems by being turned on and establishes a disconnected condition between the adjacent power systems by being turned off, and an intra-system switch in each of the power systems, which is disposed on the main path between the power output section and the inter-system switch, and which establishes a conducting condition between the power output section and the electrical load by being turned on and establishes a disconnected condition between the power output section and the electrical load by being turned off.
    Type: Application
    Filed: February 16, 2022
    Publication date: June 2, 2022
    Applicant: DENSO CORPORATION
    Inventors: Koji MAZAKI, Kazuyoshi OBAYASHI, Tadatoshi ASADA
  • Publication number: 20210391757
    Abstract: A dynamic wireless power transfer system performs, through a plurality of primary coils installed along a traveling direction of a road and a secondary coil mounted in a vehicle, power transfer to the vehicle while the vehicle is traveling. The secondary coil is an M-phase coil including M coils, M denoting an integer which is two or higher. The M coils each include a coil end extending along a front-rear direction of the vehicle and a main coil portion extending along a width direction of the vehicle, the M coils each being configured such that a magnetic resistance of a magnetic path where a magnetic flux of the coil end passes is higher than a magnetic resistance of a magnetic path where a magnetic flux of the main coil portion passes.
    Type: Application
    Filed: August 30, 2021
    Publication date: December 16, 2021
    Applicant: DENSO CORPORATION
    Inventors: Takuya KIGUCHI, Nobuhisa YAMAGUCHI, Eisuke TAKAHASHI, Hayato SUMIYA, Tomoyuki FUJIKAWA, Koji MAZAKI, Shimpei TAKITA, Masaki KANESAKI, Masaya TAKAHASHI, Kazuhiro UDA, Yusei NAKAYASHIKI, Mitsuru SHIBANUMA, Kazuyoshi OBAYASHI
  • Publication number: 20210143684
    Abstract: A contactless power feeding apparatus includes a plurality of primary coils mounted on a road and a power feed controller which uses a portion of the primary coils as a power transmitting coil to achieve delivery of electrical power from the power transmitting coil to a secondary coil mounted in a vehicle. The power feed controller uses a selected primary coil that is one of the primary coils other than the power transmitting coil to decrease a leakage of magnetic flux arising from excitation of the power transmitting coil. Instead of the selected primary coil, the secondary coil may be used to reduce the leakage of magnetic flux.
    Type: Application
    Filed: January 15, 2021
    Publication date: May 13, 2021
    Applicant: DENSO CORPORATION
    Inventors: Hayato SUMIYA, Eisuke TAKAHASHI, Nobuhisa YAMAGUCHI, Kazuyoshi OBAYASHI, Shimpei TAKITA, Koji MAZAKI, Mitsuru SHIBANUMA, Masaki KANESAKI, Takuya KIGUCHI, Kazuhiro UDA
  • Publication number: 20210114465
    Abstract: A contactless power supply system is provided for supplying electric power to a vehicle in a contactless manner during traveling of the vehicle. The contactless power supply system includes a plurality of primary coils installed along a traveling direction in a road and a secondary coil mounted to the vehicle. Each of the primary coils is a single-phase coil with the secondary coil being a multi-phase coil, or is a multi-phase coil with the secondary coil being a single-phase coil.
    Type: Application
    Filed: December 28, 2020
    Publication date: April 22, 2021
    Applicant: DENSO CORPORATION
    Inventors: Eisuke TAKAHASHI, Nobuhisa YAMAGUCHI, Koji MAZAKI, Shimpei TAKITA, Hayato SUMIYA, Masaki KANESAKI, Takuya KIGUCHI, Kazuhiro UDA, Mitsuru SHIBANUMA, Kazuyoshi OBAYASHI, Tomoyuki FUJIKAWA, Masaya TAKAHASHI, Yusei NAKAYASHIKI
  • Publication number: 20200216002
    Abstract: A power supply system having a plurality of power systems is provided with a power output section in each of the power systems, an electrical load in each of the power systems, operating from power supplied by the power output section, main paths that connect the power output sections of adjacent ones of the power systems, an inter-system switch that establishes a conducting condition between the adjacent power systems by being turned on and establishes a disconnected condition between the adjacent power systems by being turned off, and an intra-system switch in each of the power systems, which is disposed on the main path between the power output section and the inter-system switch, and which establishes a conducting condition between the power output section and the electrical load by being turned on and establishes a disconnected condition between the power output section and the electrical load by being turned off.
    Type: Application
    Filed: March 20, 2020
    Publication date: July 9, 2020
    Applicant: DENSO CORPORATION
    Inventors: Koji MAZAKI, Kazuyoshi OBAYASHI, Tadatoshi ASADA