Patents by Inventor Takashi Urano

Takashi Urano 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: 10811186
    Abstract: Disclosed herein is a magnetic coupling device that includes first and second coil units that transmit power or signals with each other by wireless. Each of the first and second coil units includes a first coil and a second coil. The first coil of the first coil unit and the first coil of the second coil unit are magnetically coupled to each other. The second coil of the first coil unit and the second coil of the second coil unit are magnetically coupled to each other. At least one of the first and second coil units has an electromagnetic shielding member disposed at a position preventing magnetic coupling between the first and second coils.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: October 20, 2020
    Assignee: TDK CORPORATION
    Inventors: Kazuyoshi Hanabusa, Takashi Urano
  • Patent number: 10804029
    Abstract: Disclosed herein is a rotary type magnetic coupling device used for a rotator. The rotary type magnetic coupling device includes first and second coils magnetically coupled to each other, and third and fourth coils magnetically coupled to each other. The coil axes of the first and second coils extend in a rotary axis direction of the rotator, and the coil axes of the third and fourth coils radially extend in a radial direction substantially orthogonal to the rotary axis of the rotator.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: October 13, 2020
    Assignee: TDK CORPORATION
    Inventors: Kazuyoshi Hanabusa, Takashi Urano
  • Patent number: 10650963
    Abstract: Disclosed herein is a magnetic coupling device that includes first and second coil units that transmit power or signals with each other by wireless. Each of the first and second coil units includes a first coil and a second coil. At least one of the first and second coil units has a first magnetic body constituting a magnetic path of a first magnetic flux interlinking the first coil and a second magnetic body constituting a magnetic path of a second magnetic flux interlinking the second coil. A permeability of the first magnetic body is larger than a permeability of the second magnetic body at a driving frequency of the first coil and smaller than a permeability of the second magnetic body at a driving frequency of the second coil higher than the driving frequency of the first coil.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: May 12, 2020
    Assignee: TDK CORPORATION
    Inventors: Kazuyoshi Hanabusa, Takashi Urano
  • Patent number: 10498168
    Abstract: Disclosed herein is a wireless power transmission device includes a power transmitting transformer coupled between a power transmitting circuit and a power receiving circuit, and a signal transmitting transformer coupled between a signal generating circuit provided at the power receiving circuit side and a control circuit provided at the power transmitting circuit side. The frequency of an AC signal transmitted by the signal transmitting transformer is equal to or more than ten times the frequency of an AC voltage transmitted by the power transmitting transformer. The signal generating circuit converts the magnitude of the output voltage or output current of the power receiving circuit into a magnitude of an amplitude of the AC signal.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: December 3, 2019
    Assignee: TDK CORPORATION
    Inventors: Kazuyoshi Hanabusa, Takashi Urano
  • Patent number: 10395821
    Abstract: Disclosed herein is a rotary type magnetic coupling device including first and second coils magnetically coupled to each other used for a rotator. Each of the first and second coils is a loop-shaped having an opening surrounding a rotary axis of the rotator. Each of the first and second coils includes first and second wiring parts extending in a peripheral direction of the rotator, a third wiring part bent in the rotary axis direction from one end of the first and second wiring parts, and a fourth wiring part bent in the rotary axis direction from other end of the first and second wiring parts. At least one of the first and second coils is configured such that the third and fourth wiring parts match or overlap each other when viewed in a radial direction substantially orthogonal to the rotary axis.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: August 27, 2019
    Assignee: TDK CORPORATION
    Inventors: Kazuyoshi Hanabusa, Takashi Urano
  • Patent number: 10218186
    Abstract: Power feeding device and non-contact power transmission device which are capable of maintaining high power transmission efficiency even if any displacement occurs in relative positions of each power feeding coil among plurality of power feeding coils and power receiving coil are provided. Power feeding device includes power feeding coil unit which includes magnetic body unit in which at least three magnetic bodies are arranged to be spaced apart in first direction, and plurality of power feeding coils each formed of wire wound around at least two magnetic bodies in magnetic body unit, and plurality of power feeding coils, which are located adjacently in the first direction, are configured such that wires of the plurality of power feeding coils are wound in common around one or more magnetic bodies, number of which is less than number of magnetic bodies around which wires of the respective power feeding coils and are wound.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: February 26, 2019
    Assignee: TDK CORPORATION
    Inventor: Takashi Urano
  • Publication number: 20180286579
    Abstract: Disclosed herein is a magnetic coupling device that includes first and second coil units that transmit power or signals with each other by wireless. Each of the first and second coil units includes a first coil and a second coil. At least one of the first and second coil units has a first magnetic body constituting a magnetic path of a first magnetic flux interlinking the first coil and a second magnetic body constituting a magnetic path of a second magnetic flux interlinking the second coil. A permeability of the first magnetic body is larger than a permeability of the second magnetic body at a driving frequency of the first coil and smaller than a permeability of the second magnetic body at a driving frequency of the second coil higher than the driving frequency of the first coil.
    Type: Application
    Filed: March 29, 2018
    Publication date: October 4, 2018
    Applicant: TDK CORPORATION
    Inventors: Kazuyoshi HANABUSA, Takashi Urano
  • Publication number: 20180286578
    Abstract: Disclosed herein is a magnetic coupling device that includes first and second coil units that transmit power or signals with each other by wireless. Each of the first and second coil units includes a first coil and a second coil. The first coil of the first coil unit and the first coil of the second coil unit are magnetically coupled to each other. The second coil of the first coil unit and the second coil of the second coil unit are magnetically coupled to each other. At least one of the first and second coil units has an electromagnetic shielding member disposed at a position preventing magnetic coupling between the first and second coils.
    Type: Application
    Filed: March 26, 2018
    Publication date: October 4, 2018
    Applicant: TDK Corporation
    Inventors: Kazuyoshi HANABUSA, Takashi Urano
  • Patent number: 10090717
    Abstract: A power receiving device and power feeding device improve convenience of the user by increasing the freedom of configuring the power receiving device with respect to the power feeding device and freedom of configuring the power feeding device with respect to the power receiving device, and inhibit large size of machines. The power receiving device includes: plurality of surfaces; and inside a power receiving coil, and the power receiving coil includes: a winding portion with wires wound; and an opening portion surrounded by the winding portion and having two opposite opening ends. By disposing the power receiving coil so an end face of at least one of the two opening ends is nonparallel (excluding perpendicular) to two or more surfaces of the power receiving device, a power receiving area capable of receiving power from the power feeding device formed on the two or more surfaces of the power receiving device.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: October 2, 2018
    Assignee: TDK CORPORATION
    Inventors: Naoko Kamiura, Kaoru Matsuoka, Takashi Urano
  • Patent number: 10084351
    Abstract: A power feeding device reduced unnecessary power consumption, a high response before the start of transmission of power to a power receiving device, and an expanded power feeding area (or placement range) within which power can be transmitted to the power receiving device. A power feeding device stand for wireless transmission of power to a power receiving device including a power receiving coil includes a magnetic body formed into a flat plate shape and having two main surfaces, and a power feeding coil that is arranged at a certain position on either of the main surfaces. In power transmission, the power feeding coil is arranged at a certain position on either of the main surfaces, and the power receiving coil is arranged at a different position on either of the main surfaces from the position at which the power feeding coil is arranged.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: September 25, 2018
    Assignee: TDK CORPORATION
    Inventor: Takashi Urano
  • Publication number: 20180102211
    Abstract: Disclosed herein is a rotary type magnetic coupling device used for a rotator. The rotary type magnetic coupling device includes first and second coils magnetically coupled to each other, and third and fourth coils magnetically coupled to each other. The coil axes of the first and second coils extend in a rotary axis direction of the rotator, and the coil axes of the third and fourth coils radially extend in a radial direction substantially orthogonal to the rotary axis of the rotator.
    Type: Application
    Filed: October 11, 2017
    Publication date: April 12, 2018
    Applicant: TDK Corporation
    Inventors: KAZUYOSHI HANABUSA, Takashi URANO
  • Publication number: 20180102213
    Abstract: Disclosed herein is a rotary type magnetic coupling device including first and second coils magnetically coupled to each other used for a rotator. Each of the first and second coils is a loop-shaped having an opening surrounding a rotary axis of the rotator. Each of the first and second coils includes first and second wiring parts extending in a peripheral direction of the rotator, a third wiring part bent in the rotary axis direction from one end of the first and second wiring parts, and a fourth wiring part bent in the rotary axis direction from other end of the first and second wiring parts. At least one of the first and second coils is configured such that the third and fourth wiring parts match or overlap each other when viewed in a radial direction substantially orthogonal to the rotary axis.
    Type: Application
    Filed: October 11, 2017
    Publication date: April 12, 2018
    Applicant: TDK Corporation
    Inventors: Kazuyoshi HANABUSA, Takashi URANO
  • Publication number: 20180102674
    Abstract: Disclosed herein is a wireless power transmission device includes a power transmitting transformer coupled between a power transmitting circuit and a power receiving circuit, and a signal transmitting transformer coupled between a signal generating circuit provided at the power receiving circuit side and a control circuit provided at the power transmitting circuit side. The frequency of an AC signal transmitted by the signal transmitting transformer is equal to or more than ten times the frequency of an AC voltage transmitted by the power transmitting transformer. The signal generating circuit converts the magnitude of the output voltage or output current of the power receiving circuit into a magnitude of an amplitude of the AC signal.
    Type: Application
    Filed: October 11, 2017
    Publication date: April 12, 2018
    Applicant: TDK Corporation
    Inventors: Kazuyoshi HANABUSA, Takashi URANO
  • Patent number: 9933378
    Abstract: A power feeding coil unit (a coil unit) is provided with a power feeding coil (a coil for power transmission) and an apparatus for detecting foreign matter. The apparatus for detecting foreign matter is provided with a plurality of resonators having a resonator coil and capacitor and also an excitation coil for exciting the plurality of resonators. The plurality of resonators are disposed in rows and columns to cover at least an area interlinking with a magnetic flux generated by the power feeding coil. The excitation coil makes resonators adjacent in a row direction and a column direction among the plurality of resonators to generate an alternating magnetic field with resonance frequencies different from each other within a frequency band in which the power feeding coil is not excited.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: April 3, 2018
    Assignee: TDK CORPORATION
    Inventor: Takashi Urano
  • Patent number: 9866058
    Abstract: A power receiving device, a power feeding device, and a wireless power transmission device are provided. The power receiving device receives power wirelessly transmitted from the power feeding device and includes one or more power receiving units. At least one of the power receiving units in the power receiving device is disposed along two or more surfaces which form the outer shape of the power receiving device and are not parallel to each other.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: January 9, 2018
    Assignee: TDK CORPORATION
    Inventors: Naoko Kamiura, Kaoru Matsuoka, Takashi Urano
  • Patent number: 9829454
    Abstract: The present invention aims to provide a coil unit for improving an accuracy in detecting foreign matter and an apparatus for detecting foreign matter which improves the accuracy in detecting foreign matter when a power is transmitted in a contactless manner. A power feeding coil unit (a coil unit) of the present invention is provided with a power feeding coil (a coil for power transmission) and an apparatus for detecting foreign matter. The apparatus for detecting foreign matter is provided with a plurality of resonators having a resonator coil and a resonator capacitor and also an excitation coil for exciting the plurality of resonators. The plurality of resonators are disposed to cover at least an area interlinking with a magnetic flux generated by the power feeding coil and to decrease an influence of mutual inductance.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: November 28, 2017
    Assignee: TDK CORPORATION
    Inventor: Takashi Urano
  • Publication number: 20160204621
    Abstract: Power feeding device and non-contact power transmission device which are capable of maintaining high power transmission efficiency even if any displacement occurs in relative positions of each power feeding coil among plurality of power feeding coils and power receiving coil are provided. Power feeding device includes power feeding coil unit which includes magnetic body unit in which at least three magnetic bodies are arranged to be spaced apart in first direction, and plurality of power feeding coils each formed of wire wound around at least two magnetic bodies in magnetic body unit, and plurality of power feeding coils, which are located adjacently in the first direction, are configured such that wires of the plurality of power feeding coils are wound in common around one or more magnetic bodies, number of which is less than number of magnetic bodies around which wires of the respective power feeding coils and are wound.
    Type: Application
    Filed: December 21, 2015
    Publication date: July 14, 2016
    Applicant: TDK CORPORATION
    Inventor: Takashi Urano
  • Patent number: 9356474
    Abstract: A feeding coil circuit 120 feeds power by wireless from a feeding coil L2 to a receiving coil L3 based on a magnetic field resonance phenomenon between the feeding coil L2 and receiving coil L3. A transmission power control circuit 200 supplies AC power at a drive frequency to the feeding coil L2 to make the feeding coil L2 feed the AC power to the receiving coil L3. A phase detection circuit 114 measures a phase difference between a current phase of the AC power and a voltage phase thereof. The power transmission control circuit 200 adjusts the drive frequency in accordance with the phase difference. A protection circuit 122 adjusts the phase difference in an increasing direction when the current flowing in the feeding coil L2 increases.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: May 31, 2016
    Assignee: TDK CORPORATION
    Inventor: Takashi Urano
  • Publication number: 20150333531
    Abstract: A power feeding device reduced unnecessary power consumption, a high response before the start of transmission of power to a power receiving device, and an expanded power feeding area (or placement range) within which power can be transmitted to the power receiving device. A power feeding device stand for wireless transmission of power to a power receiving device including a power receiving coil includes a magnetic body formed into a flat plate shape and having two main surfaces, and a power feeding coil that is arranged at a certain position on either of the main surfaces. In power transmission, the power feeding coil is arranged at a certain position on either of the main surfaces, and the power receiving coil is arranged at a different position on either of the main surfaces from the position at which the power feeding coil is arranged.
    Type: Application
    Filed: May 8, 2015
    Publication date: November 19, 2015
    Inventor: Takashi URANO
  • Patent number: 9143010
    Abstract: A wireless power transmission system according to an embodiment of the present invention is a wireless power transmission system performing non-contact power transmission from a wireless power feeder selectively to a plurality of wireless power receivers, and each of the plurality of wireless power receivers comprises a power receive resonance circuit including a power receive coil and a power receive capacitor, and the wireless power feeder comprises a power feed coil and a control circuit supplying AC power to the power feed coil. The control circuit in the wireless power feeder performs power supply selectively to the plurality of wireless power receivers by changing frequency of the AC power on the basis of a magnetic field resonance effect between the power feed coil and the power receive coil.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: September 22, 2015
    Assignee: TDK CORPORATION
    Inventor: Takashi Urano