Patents by Inventor Eisuke Takahashi

Eisuke Takahashi 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: 12168347
    Abstract: In a control system, a controller is configured to determine presence or absence of an obstructed area within the intermediate section, and control movement of the moving body in accordance with a selected one of controlling methods including a first and a second control methods. The first control method causes the moving body to move at a first constant speed in the processing section defined within the intermediate section and at a second constant speed faster than the first constant speed in at least a part of a non-processing section within the intermediate section and other than the processing section, the first control method being selected when the obstructed area is absent. The second control method causes the moving body to move at the first constant speed in the processing section and the non-processing section, the second control method being selected when the obstructed area is present.
    Type: Grant
    Filed: March 28, 2022
    Date of Patent: December 17, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Satoru Arakane, Masahiro Hoga, Shohei Ichikawa, Eisuke Takahashi
  • Patent number: 12151570
    Abstract: A coil unit for a contactless power supply system includes a plurality of coils for electric power transfer, and a magnetic flux reduction structure. The plurality of coils include a first coil and a second coil adjacent to the first coil in a predetermined direction. The magnetic flux reduction structure reduces, during electric power transfer using the first coil, magnetic flux by which the first coil causes an induced voltage or induced current to be generated in the second coil.
    Type: Grant
    Filed: December 9, 2022
    Date of Patent: November 26, 2024
    Assignee: DENSO CORPORATION
    Inventors: Mitsuru Shibanuma, Masaya Takahashi, Eisuke Takahashi, Nobuhisa Yamaguchi
  • Patent number: 12115872
    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: Grant
    Filed: December 28, 2020
    Date of Patent: October 15, 2024
    Assignee: 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
  • Patent number: 12095287
    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: Grant
    Filed: August 30, 2021
    Date of Patent: September 17, 2024
    Assignee: 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
  • Patent number: 12017543
    Abstract: In an in-motion power supply system with a plurality of power supply segments to supply power to a vehicle, a vehicle position detection unit detects a position of the vehicle relative to each segment. An electrical characteristic acquisition unit acquires electrical characteristics in the segment involved in power transfer, and an abnormality determination unit uses the electrical characteristics to determine whether there is an abnormality in the segment involved in power transfer.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: June 25, 2024
    Assignee: DENSO CORPORATION
    Inventors: Masaki Kanesaki, Mitsuru Shibanuma, Hayato Sumiya, Takuya Kiguchi, Eisuke Takahashi, Shinpei Takita, Masaya Takahashi, Kazuhiro Uda, Yuusei Nakayashiki, Kazuyoshi Obayashi, Nobuhisa Yamaguchi
  • Patent number: 11984733
    Abstract: In a dynamic wireless power transfer system, a power transmission coil is provided in a road. A power transmission circuit supplies electric power to the power transmission coil. A power reception coil is provided in a vehicle. A power reception circuit is connected to the power reception coil. A relay circuit is provided in a tire of the vehicle. The relay circuit includes at least two relay coils that are connected in series. The relay circuit transfers electric power from the power transmission coil to the power reception coil by one relay coil of the two relay coils opposing the power transmission coil and the other relay coil opposing the power reception coil. A resonance frequency of the relay circuit is a frequency that is within a fixed range that is centered on an applied frequency of an alternating-current voltage that is applied to the power transmission coil.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: May 14, 2024
    Assignee: DENSO CORPORATION
    Inventors: Hayato Sumiya, Eisuke Takahashi, Nobuhisa Yamaguchi, Masaya Takahashi
  • Patent number: 11984735
    Abstract: A dynamic wireless power transfer system includes a power transmission coil, a power transmission circuit, a power reception coil, a power reception circuit, and a relay circuit. The power transmission coil is provided in a road. The power transmission circuit supplies electric power to the power transmission coil. The power reception coil is provided in a vehicle. The power reception circuit is connected to the power reception coil. The relay circuit transfers electric power between the power transmission coil and the power reception coil in a contactless manner.
    Type: Grant
    Filed: January 26, 2022
    Date of Patent: May 14, 2024
    Assignees: DENSO CORPORATION, THE UNIVERSITY OF TOKYO
    Inventors: Hayato Sumiya, Eisuke Takahashi, Nobuhisa Yamaguchi, Masaya Takahashi, Hiroshi Fujimoto, Osamu Shimizu
  • Publication number: 20240106276
    Abstract: A wireless power supply system includes a plurality of power transmission units that receives and supplies power to a power receiving unit via the power transmission coil in a resonance state, and a switching control unit that switches a state of a first power transmission unit to a resonance state when the magnitude of the magnetic flux generated in a first power transmission coil of the first power transmission unit, which is one of the plurality of power transmission units, is greater than a predetermined threshold value, and switches to a non-resonance state when the magnitude is less than the threshold value. The threshold is set as a magnitude that exceeds the magnetic flux generated in the first power transmission coil due to coupling between the first power transmission coil and a second power transmission coil of a second power transmission unit, which is adjacent to first power transmission coil.
    Type: Application
    Filed: November 30, 2023
    Publication date: March 28, 2024
    Applicant: DENSO CORPORATION
    Inventors: Mitsuru SHIBANUMA, Eisuke TAKAHASHI, Masaya TAKAHASHI, Nobuhisa YAMAGUCHI, Kazuyuki KATO
  • Publication number: 20240097496
    Abstract: A power supply system includes: a power transmission circuit provided on the ground side; a high frequency generation circuit that supplies high-frequency electric power to the power transmission circuit; a measurement unit that measures a physical quantity corresponding to the degree of coupling between the power transmission circuit and a power reception circuit provided in a vehicle; and a control unit. When the degree of coupling is determined, based on the measured physical quantity, to be lower than a predetermined degree, the control unit sets the impedance of the power transmission circuit to a first impedance and thereby sets the power transmission circuit to a non-resonant state. In contrast, when the degree of coupling is determined to be not lower than the predetermined degree, the control unit sets the impedance of the power transmission circuit to a second impedance and thereby sets the power transmission circuit to a resonant state.
    Type: Application
    Filed: November 29, 2023
    Publication date: March 21, 2024
    Applicant: DENSO CORPORATION
    Inventors: Yusei NAKAYASHIKI, Masaya TAKAHASHI, Nobuhisa YAMAGUCHI, Eisuke TAKAHASHI
  • Patent number: 11926227
    Abstract: In a moving-object power supply system, a control unit selects, as a power transmission segment, one of segments included in at least one power transmission section. The control unit supplies, through a power supply circuit, power to the power transmission segment to thereby generate a magnetic field through a power transmission coil of the power transmission segment. The control unit determines, based on an ascertained first electrical characteristic of the power transmission segment and an ascertained second electrical characteristic of at least one power non-transmission segment, whether there is a malfunction in each of the power transmission segment and the at least one power non-transmission segment.
    Type: Grant
    Filed: November 17, 2021
    Date of Patent: March 12, 2024
    Assignee: DENSO CORPORATION
    Inventors: Kouji Mazaki, Nobuhisa Yamaguchi, Eisuke Takahashi, Mitsuru Shibanuma, Shinpei Takita, Masaya Takahashi, Hayato Sumiya, Masaki Kanesaki, Takuya Kiguchi, Kazuhiro Uda, Yuusei Nakayashiki
  • Publication number: 20240076837
    Abstract: A facility protection cover is disposed on a concrete foundation and covers a facility device disposed between the facility protection cover and the concrete foundation. The facility protection cover includes a cover body including a fiber-reinforced cement composite. The cover body includes two legs that are spaced apart from each other so as to be located on opposite sides of a facility device placement space. The facility device placement space accommodates the facility device. The cover body includes a bridging portion that bridges the two legs so as to extend over the facility device placement space. The cover body transmits a weight of a vehicle loaded on the cover body to the concrete foundation via the two legs, and restricts a separating relative movement of the two legs along a placement surface of the concrete foundation when the weight of the vehicle is loaded on the bridging portion.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 7, 2024
    Inventors: Koichi TANAKA, Eisuke TAKAHASHI
  • Publication number: 20240072579
    Abstract: A coil assembly for wireless electrical power transmission includes a plurality of external connecting terminals, a power feeding coil, a resonant capacitor electrically connecting with the power feeding coil, and busbars each of which electrically connects between the external connecting terminals.
    Type: Application
    Filed: October 25, 2023
    Publication date: February 29, 2024
    Applicant: DENSO CORPORATION
    Inventors: Shimpei TAKITA, Eisuke TAKAHASHI, Nobuhisa YAMAGUCHI, Yusei NAKAYASHIKI
  • Patent number: 11888326
    Abstract: A contactless power supply device that supplies electric power to a vehicle in a contactless manner, includes: a power transmission resonance circuit; a power source circuit supplying direct-current power; and a power transmission circuit converting the direct-current power of the power source circuit into alternating-current power and supplying alternating-current power to the power transmission resonance circuit. The power transmission circuit includes: an inverter circuit converting the direct-current power of the power source circuit into alternating-current power; and a power transmission-side immittance conversion circuit adjusting the alternating-current power of the inverter circuit and supplies the adjusted alternating-current power to the power transmission resonance circuit.
    Type: Grant
    Filed: October 18, 2021
    Date of Patent: January 30, 2024
    Assignee: DENSO CORPORATION
    Inventors: Masaya Takahashi, Yuusei Nakayashiki, Eisuke Takahashi, Masaki Kanesaki, Kazuhiro Uda, Nobuhisa Yamaguchi
  • Patent number: 11878539
    Abstract: A control system is configured such that a carriage that a processing head is mounted is driven by a motor and reciprocates. The motor is controlled by a controller. The controller reciprocates the carriage by selecting a control mode as a target mode based on temperature information related to temperature of the motor and controlling the motor in the target mode. The controller selects the target mode to be applied to the control of the motor for each of particular work units. The target mode is selected from a group of particular control modes. Each control mode in the group of particular control modes is a control mode in which a maximum temperature, which is estimated based on the temperature information, when the control of the motor using the selected control mode would be executed until the processing is completed, is less than a reference value.
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: January 23, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masahiro Hoga, Shohei Ichikawa, Satoru Arakane, Eisuke Takahashi
  • Publication number: 20240006923
    Abstract: A power transmission apparatus supplies power to a power reception apparatus without contact therebetween. The power transmission apparatus includes: a power conversion unit that outputs an alternating-current voltage of a predetermined frequency; a power transmission unit that has a power transmission coil and a capacitor that is connected to the power transmission coil; a transmission line that connects the power conversion unit and the power transmission unit; and a compensator that is disposed between the power conversion unit and the transmission line. The compensator includes: an inductive reactance element that has an inductive reactance that is greater than an inductive reactance of the transmission line; and a capacitor that reduces an inductive reactance that is a sum of an inductive reactance of the transmission line and an inductive reactance of the inductive reactance element. The inductive reactance element and the capacitor are connected.
    Type: Application
    Filed: September 18, 2023
    Publication date: January 4, 2024
    Applicant: DENSO CORPORATION
    Inventors: Mitsuru SHIBANUMA, Masaya TAKAHASHI, Eisuke TAKAHASHI, Nobuhisa YAMAGUCHI
  • Patent number: 11850952
    Abstract: A system for power feeding during traveling includes a coil for power transmission, a power supply unit which supplies power to the coils, at least one shielding member which shields an electromagnetic field of the coil, and a hole provided to the shielding members.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: December 26, 2023
    Assignee: DENSO CORPORATION
    Inventors: Eisuke Takahashi, Hayato Sumiya, Takuya Kiguchi, Nobuhisa Yamaguchi
  • Publication number: 20230396100
    Abstract: A primary-side resonant circuit of a power transmission apparatus has an impedance varying element that increases, when supply of electric power is stopped, an input impedance of the primary-side resonant circuit so as to have predetermined standby current flowing through a primary-side coil. A power reception apparatus includes a magnetic flux amplifier circuit configured to amplify magnetic flux generated by the standby current flowing through the primary-side coil of the primary-side resonant circuit. The power transmission apparatus further includes a primary-side detection circuit configured to detect a change in the voltage of the primary-side coil, a change in electric current flowing through the primary-side coil or a change in a magnetic field in the vicinity of the primary-side coil; each of the changes is caused by the magnetic flux amplified by the magnetic flux amplifier circuit.
    Type: Application
    Filed: August 17, 2023
    Publication date: December 7, 2023
    Applicant: DENSO CORPORATION
    Inventors: Masaya TAKAHASHI, Mitsuru SHIBANUMA, Kazuyuki KATO, Yusei NAKAYASHIKI, Eisuke TAKAHASHI, Nobuhisa YAMAGUCHI
  • Publication number: 20230387723
    Abstract: A wireless power transmission system is provided which wirelessly transfer electric power from a power transmitter to a power receiver. The wireless power transmission system works to set a capacitance of a primary capacitor of a primary resonant circuit to undergo resonance with a self-inductance of a primary coil at an angular frequency that is an operating frequency. A tertiary capacitor of a tertiary resonant circuit has a capacitance set to undergo resonance with a self-inductance of a tertiary coil. A secondary capacitor of a secondary resonant circuit has a capacitance set to reduce a reactive component of ac power arising from self-inductances and mutual inductances of the primary coil, the secondary coil, and the tertiary coil.
    Type: Application
    Filed: August 10, 2023
    Publication date: November 30, 2023
    Applicant: DENSO CORPORATION
    Inventors: Masaya TAKAHASHI, Mitsuru SHIBANUMA, Kazuyuki KATO, Yusei NAKAYASHIKI, Eisuke TAKAHASHI, Nobuhisa YAMAGUCHI
  • Patent number: 11813857
    Abstract: There is provided control system including: movement mechanism configured so that the movement mechanism is driven by motor; detector configured to detect position and speed of the movable member; and controller. The controller is configured to: control the motor so that the movement mechanism reciprocatively moves the movable member; and in a course to move the movable member to a returning point, control the movement of the movable member by controlling the motor based on the speed of the movable member so that the movable member is moved at a constant speed until a deceleration start point of time, and control the movement of the movable member by controlling the motor based on the position of the movable member so that the movable member is decelerated from the deceleration start point of time and stops at the returning point in accordance with a target position locus.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: November 14, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Eisuke Takahashi, Sachie Kiriyama
  • Publication number: 20230331102
    Abstract: A power reception apparatus is installable in a vehicle and configured to receive electric power from a power transmission coil embedded in the ground. The power reception apparatus includes: a relay coil that is arranged on a tired wheel, which includes a tire and a wheel, and includes a first coil and a second coil; a power reception coil; and a power reception circuit. The first coil and the second coil are connected with each other by an electrical conductor. The first coil is arranged inside the tire. The second coil is located so that a distance from a central axis of the tired wheel to the second coil is shorter than a distance from the central axis to the first coil. The power reception coil is located so that when the first coil faces the power transmission coil, the power reception coil faces the second coil.
    Type: Application
    Filed: June 26, 2023
    Publication date: October 19, 2023
    Applicants: DENSO CORPORATION, THE UNIVERSITY OF TOKYO, BRIDGESTONE CORPORATION
    Inventors: Hayato SUMIYA, Shimpei TAKITA, Kazuhiro UDA, Eisuke TAKAHASHI, Nobuhisa YAMAGUCHI, Hiroshi FUJIMOTO, Osamu SHIMIZU, Yasumichi WAKAO, Isao KUWAYAMA