Patents by Inventor Tetsuya Sakurada

Tetsuya Sakurada 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: 20210320555
    Abstract: A frame included in an electronic motor has an inflow hole that allows outside air to flow in an interior of the electric motor and an outflow hole that allows the outside air having flowed in to flow out of the electric motor. The electric motor includes a first partition member forming a first ventilation path between the first partition member and the frame, and a second partition member forming a second ventilation path between the second partition member and the frame. In addition, the stator has a third ventilation path penetrating through the stator from one end to another end of the stator in a direction of a rotational axis and configured to communicate with the first ventilation path and the second ventilation path.
    Type: Application
    Filed: September 7, 2018
    Publication date: October 14, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshifumi AJIOKA, Tetsuya SAKURADA, Seiji HAGA, Kazuki IWASA
  • Publication number: 20200381172
    Abstract: A reactor is equipped with a coil having unit coils. First spacers are disposed in at least one of spaces between the unit coils and in a space between one of the unit coils and a supporting frame. Second spacers are disposed between the first spacers. The supporting frames, the first spacers, and the second spacers are traversed by bolts and are fixed to the bolts. A space is defined between the bolt and a wall surface of a through hole formed in the first spacer and traversed by the bolt. A spacing distance between adjacent first spacers in the central axis direction of the coil is greater than a central-axis-direction thickness of the unit coil located between the adjacent first spacers, the central-axis-direction thickness of the unit coil being of when the coil is not energized.
    Type: Application
    Filed: December 19, 2016
    Publication date: December 3, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yuki ISHIMORI, Tetsuya SAKURADA
  • Patent number: 10752263
    Abstract: A vehicular cooling device includes an opening, a discharge port, an air channel, and a fan. The opening is formed in a surface parallel to a travelling direction of a vehicle. The discharge port is formed in a surface of the housing and connected to the opening via the air channel. The fan is provided inside the air channel. First blockers are spaced apart in the travelling direction in the opening. Each first blocker extends in a direction perpendicular to both the travelling direction and an inflow direction of the outside air, and includes first and second members. The first member is a plate-like member having a main surface intersecting the travelling direction. The first member and the second member are symmetric with respect to a plane perpendicular to the travelling direction, and have a travelling-direction spacing therebetween that increases along the inflow direction of the outside air.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: August 25, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tetsuya Sakurada, Kenichi Nakagawa, Kazuki Iwasa, Seiji Haga
  • Publication number: 20200211757
    Abstract: A coil includes unit coils wound around a central axis and adjacent to each other with a space therebetween in a central axis direction. A reactor includes a pair of support frames and one or more spacers, the support frames facing each other in the central axis direction across the coil. The spacers are disposed between adjacent unit coils or between the support frame and the coil. At least one of the spacers is a variable spacer that includes a first member and a second member, the first member having one end face which has a recess, and the second member including a fitting portion to be fitted into the recess of the first member in the central axis direction. The linear expansion coefficient of the second member is less than the linear expansion coefficient of the first member.
    Type: Application
    Filed: July 6, 2017
    Publication date: July 2, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yuki ISHIMORI, Tetsuya SAKURADA
  • Publication number: 20200176177
    Abstract: A reactor includes a coil that has unit coils. Spacers are disposed in (i) at least one of spaces between the unit coils adjacent to each other in the central axis direction and (ii) a space between each of the support frames and the unit coil. Bolts penetrate the support frame and the spacers, and the spacers are fixed to the bolts The bolts include fitting portions to be fitted to one of the spacers on a notch or a through hole formed in a projection part of the spacer.
    Type: Application
    Filed: July 3, 2017
    Publication date: June 4, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yuki ISHIMORI, Tetsuya SAKURADA
  • Publication number: 20190039630
    Abstract: A vehicular cooling device includes an opening, a discharge port, an air channel, and a fan. The opening is formed in a surface parallel to a travelling direction of a vehicle. The discharge port is formed in a surface of the housing and connected to the opening via the air channel. The fan is provided inside the air channel. First blockers are spaced apart in the travelling direction in the opening. Each first blocker extends in a direction perpendicular to both the travelling direction and an inflow direction of the outside air, and includes first and second members. The first member is a plate-like member having a main surface intersecting the travelling direction. The first member and the second member are symmetric with respect to a plane perpendicular to the travelling direction, and have a travelling-direction spacing therebetween that increases along the inflow direction of the outside air.
    Type: Application
    Filed: February 29, 2016
    Publication date: February 7, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tetsuya Sakurada, Kenichi Nakagawa, Kazuki Iwasa, Seiji Haga