Patents by Inventor Tetsuo Yasaka

Tetsuo Yasaka 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: 12187459
    Abstract: [Problem] To provide a spacecraft having a more effective arrangement of amplifiers. [Solution] Provided is a spacecraft comprising: a main body having a housing space for housing an electronic device within; an oscillator configured to output a radio wave including a frequency in a predetermined frequency band; an amplifier disposed on an exterior of the main body so as to be exposed to space and configured to amplify the power of the radio wave output by the oscillator; and an antenna, disposed on the exterior of the main body, for emitting the radio wave to the outside at the power amplified by the amplifier.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: January 7, 2025
    Assignee: Institute for Q-shu Pioneers of Space, Inc.
    Inventors: Shunsuke Onishi, Tetsuo Yasaka, Kazuo Kuno, Masahiko Uetsuhara, Yohei Koga
  • Patent number: 11973272
    Abstract: A spacecraft includes: a main-reflection unit configured to reflect and emit a radio wave outside, a sub-reflection unit configured to face the main-reflection unit, a radiator arranged to face the sub-reflection unit and configured to radiate the radio wave in a direction of the sub-reflection unit, a main body configured to be able to accommodate at least one part of the sub-reflection unit therein, and a delivery device connected to the sub-reflection unit and configured to deliver the sub-reflection unit, at least one part of which is accommodated in the main body, to a position where the sub-reflection unit is able to reflect the radio wave radiated from the radiator to the main-reflection unit and cause the main-reflection unit to radiate the radio wave outside.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: April 30, 2024
    Assignee: Institute for Q-shu Pioneers of Space, Inc.
    Inventors: Shunsuke Onishi, Tetsuo Yasaka, Kazuo Kuno, Masahiko Uetsuhara, Yohei Koga, Shinji Ito, Yonosuke Ichiki, Kazuo Kiso, Mutsuhito Tobo
  • Patent number: 11967763
    Abstract: Spacecraft and antenna apparatus that can be more easily deployed from a stored state can include: a main-reflection unit including a plurality of ribs formed to be deployable in a stored state in which the ribs are folded and a sheet body provided between a plurality of the ribs and configured to be capable of reflecting a radio wave radiated from a radiator and emitting the radio wave outside, and a restriction member configured to restrict deployment of the plurality of ribs in the stored state, and release the restriction by operation of a restriction release member different from the main-reflection unit.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: April 23, 2024
    Assignee: Institute for Q-shu Pioneers of Space, Inc.
    Inventors: Shunsuke Onishi, Tetsuo Yasaka, Kazuo Kuno, Masahiko Uetsuhara, Yohei Koga, Shinji Ito, Yonosuke Ichiki, Kazuo Kiso, Mutsuhito Tobo
  • Publication number: 20220388691
    Abstract: [Problem] To provide a spacecraft having a more effective arrangement of amplifiers. [Solution] Provided is a spacecraft comprising: a main body having a housing space for housing an electronic device within; an oscillator configured to output a radio wave including a frequency in a predetermined frequency band; an amplifier disposed on an exterior of the main body so as to be exposed to space and configured to amplify the power of the radio wave output by the oscillator; and an antenna, disposed on the exterior of the main body, for emitting the radio wave to the outside at the power amplified by the amplifier.
    Type: Application
    Filed: November 5, 2019
    Publication date: December 8, 2022
    Applicant: Institute for Q-shu Pioneers of Space, Inc.
    Inventors: Shunsuke ONISHI, Tetsuo YASAKA, Kazuo KUNO, Masahiko UETSUHARA, Yohei KOGA
  • Patent number: 11381001
    Abstract: Deployable reflectors and antennas and spacecraft using such reflectors are disclosed. An example disclosed reflector includes: a hub having a cross-section formed in a circular, elliptical or polygonal shape; a plurality of ribs, each rib having an inner side surface facing an outer peripheral side of the hub when folded, and an outer side surface that is a surface opposite to the inner side surface, the plurality of ribs being folded to be wound around an outer periphery of the hub such that the inner side surface of each rib and the outer side surface of its adjacent rib partially face each other or the outer side surface of each rib and the inner side surface of its adjacent rib partially face each other, each rib being deployed in a parabolic shape; and a sheet installed across each of the plurality of ribs and capable of reflecting radio waves.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: July 5, 2022
    Assignee: Institute for Q-shu Pioneers of Space, Inc.
    Inventors: Shunsuke Onishi, Tetsuo Yasaka, Kazuo Kuno, Yohei Koga
  • Publication number: 20220181789
    Abstract: Antenna apparatus and spacecraft to be deployed in a more compactly stored state are disclosed. In an example of the disclosed technology, a spacecraft includes: a main-reflection unit configured to reflect and emit a radio wave outside, a sub-reflection unit configured to face the main-reflection unit, a radiator arranged to face the sub-reflection unit and configured to radiate the radio wave in a direction of the sub-reflection unit, a main body configured to be able to accommodate at least one part of the sub-reflection unit therein, and a delivery device connected to the sub-reflection unit and configured to deliver the sub-reflection unit, at least one part of which is accommodated in the main body, to a position where the sub-reflection unit is able to reflect the radio wave radiated from the radiator to the main-reflection unit and cause the main-reflection unit to radiate the radio wave outside.
    Type: Application
    Filed: April 18, 2019
    Publication date: June 9, 2022
    Applicant: Institute for Q-shu Pioneers of Space, Inc.
    Inventors: Shunsuke ONISHI, Tetsuo YASAKA, Kazuo KUNO, Masahiko UETSUHARA, Yohei KOGA, Shinji ITO, Yonosuke ICHIKI, Kazuo KISO, Mutsuhito TOBO
  • Publication number: 20220181788
    Abstract: Antenna apparatus and spacecraft to be deployed in a more easily stored state are disclosed. In an example of the disclosed technology, and antenna apparatus includes: a main-reflection unit including a plurality of ribs formed to be deployable in a stored state in which the ribs are folded and a sheet body provided between a plurality of the ribs and configured to be capable of reflecting a radio wave radiated from a radiator and emitting the radio wave outside, and a restriction member configured to restrict deployment of the plurality of ribs in the stored state, and release the restriction by operation of a restriction release member different from the main-reflection unit.
    Type: Application
    Filed: April 18, 2019
    Publication date: June 9, 2022
    Applicant: Institute for Q-shu Pioneers of Space, Inc.
    Inventors: Shunsuke ONISHI, Tetsuo YASAKA, Kazuo KUNO, Masahiko UETSUHARA, Yohei KOGA, Shinji ITO, Yonosuke ICHIKI, Kazuo KISO, Mutsuhito TOBO
  • Patent number: 11223139
    Abstract: An expandable antenna includes: a plurality of ribs arranged with a regulated angular pitch at an outer circumferential portion of a hub; and a metal mesh installed between the plurality of adjacent ribs, wherein each of the plurality of ribs is formed in a horizontally elongated thin flat plate shape with elasticity, and a segment to which the metal mesh is attached is formed in a parabolic shape. A flat plane of each of the plurality of ribs is arranged so as to be substantially parallel to a central axis of the hub. The object of the present invention is to provide the expandable antenna which can be easily expanded in outer space with a simple structure and can realize a desired shape after expansion.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: January 11, 2022
    Assignee: INSTITUTE FOR Q-SHU PIONEERS OF SPACE, INC.
    Inventors: Shunsuke Onishi, Tetsuo Yasaka, Kazuo Kuno, Yohei Koga
  • Publication number: 20210167516
    Abstract: Deployable reflectors and antennas and spacecraft using such reflectors are disclosed. An example disclosed reflector includes: a hub having a cross-section formed in a circular, elliptical or polygonal shape; a plurality of ribs, each rib having an inner side surface facing an outer peripheral side of the hub when folded, and an outer side surface that is a surface opposite to the inner side surface, the plurality of ribs being folded to be wound around an outer periphery of the hub such that the inner side surface of each rib and the outer side surface of its adjacent rib partially face each other or the outer side surface of each rib and the inner side surface of its adjacent rib partially face each other, each rib being deployed in a parabolic shape; and a sheet installed across each of the plurality of ribs and capable of reflecting radio waves.
    Type: Application
    Filed: October 30, 2017
    Publication date: June 3, 2021
    Applicant: Institute for Q-shu Pioneers of Space, Inc.
    Inventors: Shunsuke ONISHI, Tetsuo YASAKA, Kazuo KUNO, Yohei KOGA
  • Publication number: 20190165481
    Abstract: An expandable antenna includes: a plurality of ribs arranged with a regulated angular pitch at an outer circumferential portion of a hub; and a metal mesh installed between the plurality of adjacent ribs, wherein each of the plurality of ribs is formed in a horizontally elongated thin flat plate shape with elasticity, and a segment to which the metal mesh is attached is formed in a parabolic shape. A flat plane of each of the plurality of ribs is arranged so as to be substantially parallel to a central axis of the hub. The object of the present invention is to provide the expandable antenna which can be easily expanded in outer space with a simple structure and can realize a desired shape after expansion.
    Type: Application
    Filed: June 19, 2017
    Publication date: May 30, 2019
    Applicant: INSTITUTE FOR Q-SHU PIONEER OF SPACE INC.
    Inventors: Shunsuke ONISHI, Tetsuo YASAKA, Kazuo KUNO, Yohei KOGA
  • Patent number: 5163641
    Abstract: A method and apparatus for changing the orbit of an artificial satellite. The apparatus is caused to approach a target satellite and to be coupled thereto in space so as to constitute a dumbbell-like coupled system. The apparatus has a propulsion unit. The unit generates a thrust, whereby the velocity of the center of gravity of the apparatus increases, and the apparatus rotates around the center of gravity. As a result, the coupling system is placed in transition orbit.In the transition orbit, the coupled system is released at a timing when the direction of elongation of the coupled system becomes perpendicular to the orbital velocity vector. Subsequently, the target satellite is placed in a final target orbit, and the separated orbit changing apparatus is placed in an orbit different from the target orbit.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: November 17, 1992
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventor: Tetsuo Yasaka