Patents by Inventor Ryosuke Hasaba

Ryosuke Hasaba 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: 11128183
    Abstract: An electric power transmission device transmits electric power to an electric power reception device including an electric power reception coil in water. The electric power transmission device includes one or more transmission coils which include an electric power transmission coil configured to transmit electric power to the electric power reception coil via a magnetic field, an electric power transmitter, configured to transmit AC power to the electric power transmission coil, a capacitor which is connected to the transmission coil and forms a resonance circuit which resonates with the transmission coil, a first tubular member which is waterproof and seals a periphery of the transmission coil, a second tubular member which surrounds the first tubular member and includes a plurality of holes, and an adjuster, configured to adjust an amount of air in a gap between the first tubular member and the second tubular member.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: September 21, 2021
    Assignee: PANASONIC CORPORATION
    Inventors: Katsuya Okamoto, Souichi Kawata, Kazuhiro Eguchi, Yoshio Koyanagi, Ryosuke Hasaba
  • Publication number: 20210273490
    Abstract: A power transmitting device transmits power to a power receiving device having a power receiving coil in water. The power transmitting device includes a power transmitting coil configured to transmit the power to the power receiving coil via a magnetic field. The power transmitting device also includes a support member that supports the power transmitting coil, and one or more spacers that hold the transmitting coil and the support member.
    Type: Application
    Filed: May 19, 2021
    Publication date: September 2, 2021
    Applicant: PANASONIC CORPORATION
    Inventors: Katsuya OKAMOTO, Souichi KAWATA, Kazuhiro EGUCHI, Ryosuke HASABA, Yoshio KOYANAGI, Tamaki URA
  • Patent number: 11031820
    Abstract: A power transmitting device transmits power to a power receiving device having a power receiving coil, in water. The power transmitting device includes one or more annular transmitting coils including a power transmitting coil configured to transmit the power to the power receiving coil via a magnetic field, a support member located in an inner space of the transmitting coil, which is formed by the annular transmitting coil, the support member including an outer periphery along an inner periphery of the annular transmitting coil, and supporting the transmitting coil from the inner space, a power transmitting unit configured to supply A/C power to the power transmitting coil, and a capacitor connected to the transmitting coil, and forming a resonance circuit resonating together with the transmitting coil.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: June 8, 2021
    Assignee: PANASONIC CORPORATION
    Inventors: Katsuya Okamoto, Souichi Kawata, Kazuhiro Eguchi, Ryosuke Hasaba, Yoshio Koyanagi, Tamaki Ura
  • Publication number: 20210166855
    Abstract: A transmission coil configured to transmit electric power in water includes an annular electric wire through which an alternating current flows, and a first cover which includes non-conductive resin or non-magnetic resin and seals a periphery of the electric wire. The electric wire transmits the electric power via a magnetic field generated by flowing of the alternating current. The first cover includes a second cover which surrounds an outer peripheral surface of the electric wire in a radial direction with the non-conductive resin or the non-magnetic resin, and a self-bonding tape configured to seal an outer peripheral surface of the second cover.
    Type: Application
    Filed: February 11, 2021
    Publication date: June 3, 2021
    Applicant: PANASONIC CORPORATION
    Inventors: Kazuhiro EGUCHI, Ryosuke HASABA, Katsuya OKAMOTO, Souichi KAWATA, Yoshio KOYANAGI
  • Patent number: 10950379
    Abstract: Provided is a transmission coil which can inhibit reduction in transmission efficiency during underwater non-contact electric power transmission. A transmission coil configured to transmit electric power in water includes an annular electric wire through which an alternating current flows, and a first cover which includes non-conductive resin or non-magnetic resin and seals a periphery of the electric wire. The electric wire transmits the electric power via a magnetic field generated by flowing of the alternating current.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: March 16, 2021
    Assignee: PANASONIC CORPORATION
    Inventors: Kazuhiro Eguchi, Ryosuke Hasaba, Katsuya Okamoto, Souichi Kawata, Yoshio Koyanagi
  • Patent number: 10886621
    Abstract: An antenna device includes a substrate having a ground conductor, an antenna conductor disposed approximately parallel with the ground conductor with an air layer or a dielectric layer, plural short-circuiting conductors that connect the antenna conductor to the ground conductor, and a feed conductor disposed in a vicinity of one of the plural short-circuiting conductors and that feeds the antenna conductor with power. When a wavelength of frequency used in the antenna device is represented by ?, an outer circumferential length of the slot is approximately 1? to 2? and a width of the slot is 0.005? to 0.05?, an interval between the plural short-circuiting conductors is shorter than or equal to ?/2, and a distance between the antenna conductor and the ground conductor is 0.005? to 0.05?.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: January 5, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuki Tanaka, Ryosuke Hasaba, Yoshio Koyanagi, Kazuki Kanai
  • Patent number: 10862341
    Abstract: An electric power transmission device capable of efficiently performing contactless electric power transmission to an underwater vehicle in water is provided. The electric power transmission device, which is an electric power transmission device transmitting electric power to an electric power reception device including an electric power reception coil in water, includes one or more transmission coils including an electric power transmission coil which transmits electric power to an electric power reception coil via a magnetic field, an electric power transmission unit which transmits AC power to an electric power transmission coil, a capacitor which is connected to the transmission coil and forms a resonant circuit which resonates with the transmission coil, and a buoyant body connected to at least one of the transmission coils.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: December 8, 2020
    Assignee: PANASONIC CORPORATION
    Inventors: Yoshio Koyanagi, Kazuhiro Eguchi, Souichi Kawata, Futoshi Deguchi, Katsuya Okamoto, Ryosuke Hasaba, Tamaki Ura
  • Publication number: 20200381162
    Abstract: Provided is a transmission coil which can inhibit reduction in transmission efficiency during underwater non-contact electric power transmission. A transmission coil configured to transmit electric power in water includes an annular electric wire through which an alternating current flows, and a first cover which includes non-conductive resin or non-magnetic resin and seals a periphery of the electric wire. The electric wire transmits the electric power via a magnetic field generated by flowing of the alternating current.
    Type: Application
    Filed: March 8, 2018
    Publication date: December 3, 2020
    Applicant: PANASONIC CORPORATION
    Inventors: Kazuhiro EGUCHI, Ryosuke HASABA, Katsuya OKAMOTO, Souichi KAWATA, Yoshio KOYANAGI
  • Publication number: 20200321810
    Abstract: An electric power transmission device transmits electric power to an electric power reception device including an electric power reception coil in water. The electric power transmission device includes one or more transmission coils which include an electric power transmission coil configured to transmit electric power to the electric power reception coil via a magnetic field, an electric power transmitter, configured to transmit AC power to the electric power transmission coil, a capacitor which is connected to the transmission coil and forms a resonance circuit which resonates with the transmission coil, a first tubular member which is waterproof and seals a periphery of the transmission coil, a second tubular member which surrounds the first tubular member and includes a plurality of holes, and an adjuster, configured to adjust an amount of air in a gap between the first tubular member and the second tubular member.
    Type: Application
    Filed: February 8, 2019
    Publication date: October 8, 2020
    Applicant: PANASONIC CORPORATION
    Inventors: Katsuya OKAMOTO, Souichi KAWATA, Kazuhiro EGUCHI, Yoshio KOYANAGI, Ryosuke HASABA
  • Patent number: 10790705
    Abstract: A power transmission device transmits power underwater to a power reception device including a power reception coil. The power transmission device includes: a power transmission coil that transmits power to the power reception coil through a magnetic field; a power transmitter that transmits an alternating current power having a predetermined frequency to the power transmission coil; and a first capacitor that is connected to the power transmission coil and forms a resonance circuit resonating with the power transmission coil. The predetermined frequency is a frequency between a first frequency at which a geometric mean value of a Q value of the power transmission coil and a Q value of the power reception coil are the maximum and a second frequency at which the Q value of the power transmission coil and the Q value of the power reception coil are the same.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: September 29, 2020
    Assignee: PANASONIC CORPORATION
    Inventors: Futoshi Deguchi, Souichi Kawata, Kazuhiro Eguchi, Katsuya Okamoto, Yoshio Koyanagi, Ryosuke Hasaba
  • Publication number: 20200169117
    Abstract: A power transmitting device transmits power tower power receiving device having a power receiving coil, in water. The power transmitting device includes one or more annular transmitting coils including a power transmitting coil configured to transmit the power to the power receiving coil via a magnetic field, a support member located in an inner space of the transmitting coil, which is formed by the annular transmitting coil, the support member including an outer periphery along an inner periphery of the annular transmitting coil, and supporting the transmitting coil from the inner space, a power transmitting unit configured to supply A/C power to the power transmitting coil, and a capacitor connected to the transmitting coil, and forming a resonance circuit resonating together with the transmitting coil.
    Type: Application
    Filed: May 10, 2018
    Publication date: May 28, 2020
    Applicant: PANASONIC CORPORATION
    Inventors: Katsuya OKAMOTO, Souichi KAWATA, Kazuhiro EGUCHI, Ryosuke HASABA, Yoshio KOYANAGI, Tamaki URA
  • Patent number: 10549652
    Abstract: A power transmission device is configured to transmit power underwater to an underwater vehicle having a power reception coil. The power transmission device includes a power transmission coil configured to transmit power to the power reception coil through a magnetic field, a power transmission unit configured to transmit an alternating current voltage having a frequency a 10 kHz or lower to the power transmission coil, and a first capacitor connected to the power transmission coil and configured to form a resonance circuit resonating at the frequency with the power transmission coil.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: February 4, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Futoshi Deguchi, Yoshio Koyanagi, Kazuhiro Eguchi, Katsuya Okamoto, Ryosuke Hasaba
  • Publication number: 20190334380
    Abstract: An electric power transmission device capable of efficiently performing contactless electric power transmission to an underwater vehicle in water is provided. The electric power transmission device, which is an electric power transmission device transmitting electric power to an electric power reception device including an electric power reception coil in water, includes one or more transmission coils including an electric power transmission coil which transmits electric power to an electric power reception coil via a magnetic field, an electric power transmission unit which transmits AC power to an electric power transmission coil, a capacitor which is connected to the transmission coil and forms a resonant circuit which resonates with the transmission coil, and a buoyant body connected to at least one of the transmission coils.
    Type: Application
    Filed: September 5, 2017
    Publication date: October 31, 2019
    Applicant: PANASONIC CORPORATION
    Inventors: Yoshio KOYANAGI, Kazuhiro EGUCHI, Souichi KAWATA, Futoshi DEGUCHI, Katsuya OKAMOTO, Ryosuke HASABA, Tamaki URA
  • Patent number: 10447053
    Abstract: A terminal includes an RF-DC conversion circuit outputting DC current by converting AC current received via wireless communication into DC current, a DC-DC converter connected to an output side of RF-DC conversion circuit to convert a voltage of DC current output from RF-DC conversion circuit to a predetermined voltage, and a controller controlling connection and disconnection between RF-DC conversion circuit and DC-DC converter. Controller acquires open circuit voltage Vin_oc on an output side of RF-DC conversion circuit, which is obtained when RF-DC conversion circuit and DC-DC converter are disconnected from each other, and target voltage ?Vin_oc (0<?<1) obtained by dividing open circuit voltage Vin_oc. When RF-DC conversion circuit and DC-DC converter are connected to each other, controller performs feedback control of DC-DC converter so that an input voltage Vin on a side where DC-DC converter is connected to RF-DC conversion circuit is equal to target voltage ?Vin_oc.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: October 15, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuki Tanaka, Ryosuke Hasaba, Yoshio Koyanagi
  • Publication number: 20190305583
    Abstract: An energy harvest terminal includes a distribution circuit that distributes input radio wave power to at least two branch paths, a main rectification circuit that converts first radio wave power supplied to one of the at least two branch paths from the distribution circuit into DC output power, a DC-DC converter that performs voltage conversion on the DC output power of the main rectification circuit, a sub-rectification circuit that converts second radio wave power supplied to another of the at least two branch paths from the distribution circuit into DC output power, and an electricity storage device connected to an output of the DC-DC converter. The DC-DC converter performs a feedback control for equalizing an output voltage of the main rectification circuit and an output voltage of the sub-rectification circuit.
    Type: Application
    Filed: March 27, 2019
    Publication date: October 3, 2019
    Inventors: Yuki TANAKA, Ryosuke HASABA, Yoshio KOYANAGI, Kazuki KANAI
  • Publication number: 20190288399
    Abstract: An antenna device includes a substrate having a ground conductor, an antenna conductor disposed approximately parallel with the ground conductor with an air layer or a dielectric layer, plural short-circuiting conductors that connect the antenna conductor to the ground conductor, and a feed conductor disposed in a vicinity of one of the plural short-circuiting conductors and that feeds the antenna conductor with power. When a wavelength of frequency used in the antenna device is represented by ?, an outer circumferential length of the slot is approximately 1? to 2? and a width of the slot is 0.005? to 0.05?, an interval between the plural short-circuiting conductors is shorter than or equal to ?/2, and a distance between the antenna conductor and the ground conductor is 0.005? to 0.05?.
    Type: Application
    Filed: March 11, 2019
    Publication date: September 19, 2019
    Inventors: Yuki TANAKA, Ryosuke HASABA, Yoshio KOYANAGI, Kazuki KANAI
  • Publication number: 20190229557
    Abstract: A power transmission device transmits power underwater to a power reception device including a power reception coil. The power transmission device includes: a power transmission coil that transmits power to the power reception coil through a magnetic field; a power transmitter that transmits an alternating current power having a predetermined frequency to the power transmission coil; and a first capacitor that is connected to the power transmission coil and forms a resonance circuit resonating with the power transmission coil. The predetermined frequency is a frequency between a first frequency at which a geometric mean value of a Q value of the power transmission coil and a Q value of the power reception coil are the maximum and a second frequency at which the Q value of the power transmission coil and the Q value of the power reception coil are the same.
    Type: Application
    Filed: June 19, 2017
    Publication date: July 25, 2019
    Applicant: PANASONIC CORPORATION
    Inventors: Futoshi DEGUCHI, Souichi KAWATA, Kazuhiro EGUCHI, Katsuya OKAMOTO, Yoshio KOYANAGI, Ryosuke HASABA
  • Patent number: 10276916
    Abstract: An antenna device includes a first plate conductor that is disposed approximately in parallel to the GND conductor plate, of which one end is connected to the GND conductor plate, and the other end that is opposed to the one end is opened, and a second plate conductor that has approximately the same shape as that of the first plate conductor, of which one end is grounded to the GND conductor plate, of which the other end that is opposed to the one end is opened, that is disposed at a position obtained by rotating the first plate conductor approximately 180 degrees about an intersection line passing through an approximately central point of the GND conductor plate as an axis on the same plane as the first plate conductor on the GND conductor plate, and that has a ground portion at which the grounding is performed and an open portion at which the opening is performed at positions obtained by rotating the ground portion and the open portion of the first plate conductor approximately 180 degrees about the axis.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: April 30, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Ryosuke Hasaba, Yuki Tanaka, Yoshio Koyanagi
  • Publication number: 20180215277
    Abstract: A power transmission device is configured to transmit power underwater to an underwater vehicle having a power reception coil. The power transmission device includes a power transmission coil configured to transmit power to the power reception coil through a magnetic field, a power transmission unit configured to transmit an alternating current voltage having a frequency a 10 kHz or lower to the power transmission coil, and a first capacitor connected to the power transmission coil and configured to form a resonance circuit resonating at the frequency with the power transmission coil.
    Type: Application
    Filed: May 27, 2016
    Publication date: August 2, 2018
    Inventors: Futoshi DEGUCHI, Yoshio KOYANAGI, Kazuhiro EGUCHI, Katsuya OKAMOTO, Ryosuke HASABA
  • Publication number: 20180183256
    Abstract: A terminal includes an RF-DC conversion circuit outputting DC current by converting AC current received via wireless communication into DC current, a DC-DC converter connected to an output side of RF-DC conversion circuit to convert a voltage of DC current output from RF-DC conversion circuit to a predetermined voltage, and a controller controlling connection and disconnection between RF-DC conversion circuit and DC-DC converter. Controller acquires open circuit voltage Vin_oc on an output side of RF-DC conversion circuit, which is obtained when RF-DC conversion circuit and DC-DC converter are disconnected from each other, and target voltage ?Vin_oc (0<?<1) obtained by dividing open circuit voltage Vin_oc. When RF-DC conversion circuit and DC-DC converter are connected to each other, controller performs feedback control of DC-DC converter so that an input voltage Vin on a side where DC-DC converter is connected to RF-DC conversion circuit is equal to target voltage ?Vin_oc.
    Type: Application
    Filed: November 30, 2017
    Publication date: June 28, 2018
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LT D.
    Inventors: Yuki TANAKA, Ryosuke HASABA, Yoshio KOYANAGI