Patents by Inventor Kazuhiro Eguchi
Kazuhiro Eguchi 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).
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Publication number: 20240414080Abstract: A wireless data transmission system includes N (N is an integer equal to or greater than 2) transmission coils each disposed under water such that an opening surface thereof faces vertically upward, and N communication devices each connected in a one-to-one correspondence to a connected transmission coil which is any one of the N transmission coils and each configured to perform data communication via the corresponding connected transmission coil. Each of the communication devices performs multi-hop transmission of data, which is acquired by a data acquiring device movable under the water, based on a topology generated in advance and indicating a connection mode between the N communication devices and magnetic field coupling occurring between the connected transmission coil and other connected transmission coils adjacent thereto.Type: ApplicationFiled: August 29, 2022Publication date: December 12, 2024Applicant: PANASONIC HOLDINGS CORPORATIONInventors: Kazuhiro EGUCHI, Yoshio KOYANAGI, Ryosuke HASABA, Hisao KOGA, Shuichiro YAMAGUCHI, Ryota YUKIZANE, Naohiro KAWABATA, Issei IKEZAKI
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Patent number: 11569689Abstract: A power receiving device is disposed underwater. The power receiving device includes a housing formed of a weak magnetic material, a ferromagnetic body that surrounds an outer side of the housing and is formed of a ferromagnetic material, and a power receiving coil wound around an outer side of the ferromagnetic body.Type: GrantFiled: June 7, 2019Date of Patent: January 31, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Ryosuke Hasaba, Kazuhiro Eguchi, Yoshio Koyanagi, Katsuya Okamoto, Souichi Kawata, Tatsuo Yagi
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Patent number: 11502550Abstract: 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: GrantFiled: May 19, 2021Date of Patent: November 15, 2022Assignee: PANASONIC HOLDINGS CORPORATIONInventors: Katsuya Okamoto, Souichi Kawata, Kazuhiro Eguchi, Ryosuke Hasaba, Yoshio Koyanagi, Tamaki Ura
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Publication number: 20210305846Abstract: A power receiving device is disposed underwater. The power receiving device includes a housing formed of a weak magnetic material, a ferromagnetic body that surrounds an outer side of the housing and is formed of a ferromagnetic material, and a power receiving coil wound around an outer side of the ferromagnetic body.Type: ApplicationFiled: June 7, 2019Publication date: September 30, 2021Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Ryosuke HASABA, Kazuhiro EGUCHI, Yoshio KOYANAGI, Katsuya OKAMOTO, Souichi KAWATA, Tatsuo YAGI
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Patent number: 11128183Abstract: 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: GrantFiled: February 8, 2019Date of Patent: September 21, 2021Assignee: PANASONIC CORPORATIONInventors: Katsuya Okamoto, Souichi Kawata, Kazuhiro Eguchi, Yoshio Koyanagi, Ryosuke Hasaba
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Publication number: 20210281328Abstract: An underwater communication device is provided and adapted to communicate data in water with another underwater communication device including another coil. The underwater communication device includes a first coil configured to transmit data to and from the other coil via a magnetic field, a second coil configured to transmit the data to and from the other coil via a magnetic field, and a supply unit configured to supply the data to at least one of the first coil and the second coil. A coil surface of the first coil and a coil surface of the second coil overlap each other.Type: ApplicationFiled: March 8, 2021Publication date: September 9, 2021Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kazuhiro EGUCHI, Souichi KAWATA, Katsuya OKAMOTO, Yoshio KOYANAGI
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Publication number: 20210273490Abstract: 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: ApplicationFiled: May 19, 2021Publication date: September 2, 2021Applicant: PANASONIC CORPORATIONInventors: Katsuya OKAMOTO, Souichi KAWATA, Kazuhiro EGUCHI, Ryosuke HASABA, Yoshio KOYANAGI, Tamaki URA
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Patent number: 11041964Abstract: The operation unit of radiation monitoring equipment reads in a real countable number (this time) and a cumulated countable number (previous time) in a every operational cycle, and judges whether the real countable number (this time) is within a permissible range, if the real countable number (this time) is judged to be within the permissible range, it is judged whether a number of times deviated from the permissible range is equal to zero or not, if the number of times deviated from the permissible range is judged to be equal to zero, a regular processing is performed, if the real countable number (this time) is judged to be out of a permissible range, 1 is added to the number of times deviated from the permissible range and further it is judged whether the added number of times deviated from the permissible range is equal to 1 or not.Type: GrantFiled: December 6, 2016Date of Patent: June 22, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventor: Kazuhiro Eguchi
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Patent number: 11031820Abstract: 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: GrantFiled: May 10, 2018Date of Patent: June 8, 2021Assignee: PANASONIC CORPORATIONInventors: Katsuya Okamoto, Souichi Kawata, Kazuhiro Eguchi, Ryosuke Hasaba, Yoshio Koyanagi, Tamaki Ura
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Publication number: 20210166855Abstract: 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: ApplicationFiled: February 11, 2021Publication date: June 3, 2021Applicant: PANASONIC CORPORATIONInventors: Kazuhiro EGUCHI, Ryosuke HASABA, Katsuya OKAMOTO, Souichi KAWATA, Yoshio KOYANAGI
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Patent number: 10965381Abstract: A underwater communication device communicates data with another underwater communication device having another first coil and another second coil in water. The underwater communication device includes a first coil configured to transmit the data to and from the other first coil via a magnetic field, a second coil configured to transmit the data to and from the other second coil via a magnetic field, a supply unit configured to supply the data to the first coil and the second coil, a first capacitor connected to the first coil and forming a first resonance circuit that resonates with the first coil at a first resonance frequency, and a second capacitor connected to the second coil and forming a second resonance circuit that resonates with the second coil at a second resonance frequency that is different from the first resonance frequency.Type: GrantFiled: January 29, 2019Date of Patent: March 30, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kazuhiro Eguchi, Souichi Kawata, Katsuya Okamoto, Yoshio Koyanagi
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Patent number: 10950379Abstract: 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: GrantFiled: March 8, 2018Date of Patent: March 16, 2021Assignee: PANASONIC CORPORATIONInventors: Kazuhiro Eguchi, Ryosuke Hasaba, Katsuya Okamoto, Souichi Kawata, Yoshio Koyanagi
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Publication number: 20210006339Abstract: A underwater communication device communicates data with another underwater communication device having another first coil and another second coil in water. The underwater communication device includes a first coil configured to transmit the data to and from the other first coil via a magnetic field, a second coil configured to transmit the data to and from the other second coil via a magnetic field, a supply unit configured to supply the data to the first coil and the second coil, a first capacitor connected to the first coil and forming a first resonance circuit that resonates with the first coil at a first resonance frequency, and a second capacitor connected to the second coil and forming a second resonance circuit that resonates with the second coil at a second resonance frequency that is different from the first resonance frequency.Type: ApplicationFiled: January 29, 2019Publication date: January 7, 2021Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kazuhiro EGUCHI, Souichi KAWATA, Katsuya OKAMOTO, Yoshio KOYANAGI
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Patent number: 10862341Abstract: 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: GrantFiled: September 5, 2017Date of Patent: December 8, 2020Assignee: PANASONIC CORPORATIONInventors: Yoshio Koyanagi, Kazuhiro Eguchi, Souichi Kawata, Futoshi Deguchi, Katsuya Okamoto, Ryosuke Hasaba, Tamaki Ura
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Publication number: 20200381162Abstract: 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: ApplicationFiled: March 8, 2018Publication date: December 3, 2020Applicant: PANASONIC CORPORATIONInventors: Kazuhiro EGUCHI, Ryosuke HASABA, Katsuya OKAMOTO, Souichi KAWATA, Yoshio KOYANAGI
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Publication number: 20200321810Abstract: 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: ApplicationFiled: February 8, 2019Publication date: October 8, 2020Applicant: PANASONIC CORPORATIONInventors: Katsuya OKAMOTO, Souichi KAWATA, Kazuhiro EGUCHI, Yoshio KOYANAGI, Ryosuke HASABA
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Patent number: 10790705Abstract: 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: GrantFiled: June 19, 2017Date of Patent: September 29, 2020Assignee: PANASONIC CORPORATIONInventors: Futoshi Deguchi, Souichi Kawata, Kazuhiro Eguchi, Katsuya Okamoto, Yoshio Koyanagi, Ryosuke Hasaba
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Publication number: 20200169117Abstract: 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: ApplicationFiled: May 10, 2018Publication date: May 28, 2020Applicant: PANASONIC CORPORATIONInventors: Katsuya OKAMOTO, Souichi KAWATA, Kazuhiro EGUCHI, Ryosuke HASABA, Yoshio KOYANAGI, Tamaki URA
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Patent number: 10636551Abstract: An object of the present invention to provide a resistor element which can be mounted at a higher density and can cope with a wide range of resistance values, the present invention provides a resistor element including a resistor which mainly contains metal fibers, electrodes which are formed at an end portion of the resistor, and an insulating layer which is in contact with the resistor and the electrodes.Type: GrantFiled: January 11, 2018Date of Patent: April 28, 2020Assignee: Tomoegawa Co., Ltd.Inventors: Katsuya Okumura, Kazuhiro Eguchi, Daisuke Muramatsu
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Patent number: 10549652Abstract: 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: GrantFiled: May 27, 2016Date of Patent: February 4, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Futoshi Deguchi, Yoshio Koyanagi, Kazuhiro Eguchi, Katsuya Okamoto, Ryosuke Hasaba