Patents by Inventor Takuya Kagawa

Takuya Kagawa 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: 10576700
    Abstract: A first continuous fiber component and a second continuous fiber component are stacked with a non-woven fabric interposed therebetween to thereby prepare a fiber base material. The fiber base material is placed between an upper mold and a lower mold. The upper mold and the lower mold are brought close to each other to thereby form an enclosed space therebetween. The enclosed space is larger in volume than a product cavity. A liquid matrix resin is supplied to the enclosed space. The upper mold and the lower mold are brought closer to each other to thereby form the product cavity in a manner that a pressing load is applied to the fiber base material. Then, the liquid matrix resin with which the fiber base material has been impregnated is hardened in the product cavity, whereby a fiber-reinforced plastic molded article is produced.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: March 3, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Masaki Namaizawa, Makoto Uda, Hiroyuki Tanaka, Hitoshi Iwadate, Takuya Fujii, Satoru Shinkawa, Iku Koike, Kazuhiro Kagawa, Hirohide Azuma
  • Patent number: 10536029
    Abstract: A power conversion system includes a power conversion device, a connector, and a processing module. The power conversion device is connected to a power system. The attached state and the unattached state of the connector relative to a connecting port that is provided in an apparatus having a battery mounted therein can be selected. The processing module is configured to determine that a malfunction has occurred when a voltage is applied to a portion that electrically connects the connector and the connecting port in a period in which transmission of electric power with respect to the battery is stopped.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: January 14, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hideki Tamura, Takuya Kagawa, Kazunori Kidera
  • Patent number: 9647399
    Abstract: Connector for electrical connection includes coupler, cable, switch mechanism, failure detector and transmitter. Coupler is removably inserted in and connected to reception side connector provided in machine which is equipped with storage battery. Cable includes two or more electric wires including power line configured to be electrically connected to reception side connector via coupler. Cable is connected to device that performs at least one of supplying power to machine and receiving power from machine. Switch mechanism opens and closes electrical circuit between coupler and power line. Failure detector detects occurrence of failure of coupler. Transmitter transmits detection result of failure detector to device through at least one first electric wire of the two or more electric wires. Switch mechanism opens and closes the electrical circuit in accordance with control signal transmitted through first electric wire.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: May 9, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takuya Kagawa, Hideki Tamura, Kazunori Kidera
  • Publication number: 20160072341
    Abstract: A power conversion system includes a power conversion device, a connector, and a processing module. The power conversion device is connected to a power system. The attached state and the unattached state of the connector relative to a connecting port that is provided in an apparatus having a battery mounted therein can be selected. The processing module is configured to determine that a malfunction has occurred when a voltage is applied to a portion that electrically connects the connector and the connecting port in a period in which transmission of electric power with respect to the battery is stopped.
    Type: Application
    Filed: April 23, 2014
    Publication date: March 10, 2016
    Inventors: Hideki TAMURA, Takuya KAGAWA, Kazunori KIDERA
  • Publication number: 20160056589
    Abstract: Connector for electrical connection includes coupler, cable, switch mechanism, failure detector and transmitter. Coupler is removably inserted in and connected to reception side connector provided in machine which is equipped with storage battery. Cable includes two or more electric wires including power line configured to be electrically connected to reception side connector via coupler. Cable is connected to device that performs at least one of supplying power to machine and receiving power from machine. Switch mechanism opens and closes electrical circuit between coupler and power line. Failure detector detects occurrence of failure of coupler. Transmitter transmits detection result of failure detector to device through at least one first electric wire of the two or more electric wires. Switch mechanism opens and closes the electrical circuit in accordance with control signal transmitted through first electric wire.
    Type: Application
    Filed: February 19, 2014
    Publication date: February 25, 2016
    Inventors: Takuya KAGAWA, Hideki TAMURA, Kazunori KIDERA
  • Patent number: 9236764
    Abstract: A DC power supply system includes a DC power supply and a secondary battery for backing up the DC power supply. When a voltage of the DC power supply is lower than a voltage of the secondary battery, the DC power system adds an extra voltage to the voltage of the DC power supply to provide an input voltage to the secondary battery higher than the voltage of the secondary battery by using an electric power of the secondary battery, and the secondary battery is charged.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: January 12, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kazunori Kidera, Takuya Kagawa, Hideki Tamura, Hiroyuki Nishino, Mariko Nishi
  • Patent number: 9190847
    Abstract: A power distribution system includes a DC-DC converter which outputs a DC power after converting the DC power outputted from a DC power source to a desired voltage level. In the power distribution system, the DC-DC converter is controlled so as to operate only when the input voltage falls in a predetermined range.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: November 17, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hideki Tamura, Takuya Kagawa, Hiroaki Koshin
  • Patent number: 9187002
    Abstract: A connector main body of a connector accommodates a contact unit, a power cut-off unit that has an electric conductor unit, and open and close a power feeding path between an electrically driven vehicle and an electric power apparatus by bringing into contact or opening electric conductor unit, and an abnormality detection unit that detects an abnormality that occurs on power feeding path, or receives an abnormality signal from outside, an abnormality transmission unit that, when abnormality detection unit detects abnormality or receives abnormality signal, mechanically opens electric conductor unit, and a handle that mechanically brings into contact or opens electric conductor unit in a state in which abnormality detection unit does not detect abnormality and does not receive abnormality signal. Abnormality detection unit detects at least one of a short-circuit current and an overload current that occur on power feeding path as abnormality.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: November 17, 2015
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takuya Kagawa, Tetsuji Shibata, Jun Goda, Haeree Lee
  • Patent number: 9160167
    Abstract: A power supply device includes a fuel-cell power device which supplies a direct current (DC) power to one or more load devices using fuel cells as an input source; and a control unit which controls an output from the fuel-cell power device. In the power supply device, when a load current supplied to the load device is changed, an output characteristic of the fuel-cell power device is shifted so that a rate of change in an output current of the fuel-cell power device becomes lower than a preset value. With the power supply device, even though the fuel-cell is used as a power source, a DC power supplied to the load devices can be gradually changed and therefore reduce environmental load.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: October 13, 2015
    Assignee: PANASONIC CORPORATION
    Inventors: Hiroaki Koshin, Takuya Kagawa
  • Patent number: 9142958
    Abstract: The power supply apparatus includes a first power device, a second power unit, and controlling means. Each of the first power device and the second power unit supplies DC power to a DC supply line. The first power device makes constant voltage control. The second power unit includes a second power device configured to make inclination control of monotonically decreasing its output voltage with an increase of its output current, and of monotonically increasing its output voltage with a decrease of its output current. Upon acknowledging that a measurement (a magnitude of a current flowing through the DC supply line) exceeds an optimal current magnitude (a magnitude of a current supplied to the DC supply line from the first power device operating at maximum conversion efficiency), the controlling means outputs an instruction such that a magnitude of a current supplied to the DC supply line from the second power unit is identical to a difference between the measurement and the optimal current magnitude.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: September 22, 2015
    Assignee: Panasonic Corporation
    Inventors: Hiroaki Koshin, Takuya Kagawa
  • Publication number: 20150263549
    Abstract: This connector for electrical connection for electrically driven vehicle includes: a contact portion configured to electrically connect an electric cable, electrically connected with one of an electrically driven vehicle or a power apparatus, with the other; and a main body. Main body houses therein the contact portion, a power cutoff portion and a first abnormality detector. Power cutoff portion is configured to switch opening/closing of a feed line between the electrically driven vehicle and the power apparatus. First abnormality detector is configured to detect an abnormality that occurs in the feed line, or externally receive an abnormal signal. Power cutoff portion is configured to open the feed line, when first abnormality detector detects the abnormality or receives the abnormal signal. First abnormality detector is configured to detect, as the abnormality, at least one of a short-circuit current in the feed line or an overload current in the feed line.
    Type: Application
    Filed: September 19, 2013
    Publication date: September 17, 2015
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Haeree Lee, Takuya Kagawa, Tetsuji Shibata, Jun Goda
  • Publication number: 20150160271
    Abstract: A current detection device includes: a core to be disposed in the vicinity of a conductor as a detection target; a winding wound around the core; an excitation unit configured to apply an excitation signal, having a magnitude and a direction that change at a constant period, to the winding; a magnetic flux detection unit (comparator and averaging circuit) configured to detect a magnetic flux generated in the core due to current flowing through the conductor; and an adder unit configured to add a feedback signal to the excitation signal such that the magnetic flux detected by the magnetic flux detection unit is cancelled.
    Type: Application
    Filed: June 26, 2013
    Publication date: June 11, 2015
    Inventors: Hiroshi Yoshida, Masataka Kanda, Takuya Kagawa, Kenji Okada, Atsushi Nakamura
  • Patent number: 8922060
    Abstract: The power supply apparatus a main power device, an auxiliary power unit, and controlling means. Each of the main power device and the auxiliary power unit is configured to supply DC power to a DC supply line. The main power device is configured to generate DC power by use of power supplied from a secondary cell. The controlling means is configured to, when a measurement (a magnitude of a current flowing through the DC supply line) exceeds an optimal current magnitude, send an instruction to the main power device such that a current supplied from the main power device to the DC supply line has the same magnitude as the optimal current magnitude.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: December 30, 2014
    Assignee: Panasonic Corporation
    Inventors: Hiroaki Koshin, Takuya Kagawa
  • Publication number: 20140091759
    Abstract: A connector main body of a connector accommodates a contact unit, a power cut-off unit that has an electric conductor unit, and open and close a power feeding path between an electrically driven vehicle and an electric power apparatus by bringing into contact or opening electric conductor unit, and an abnormality detection unit that detects an abnormality that occurs on power feeding path, or receives an abnormality signal from outside, an abnormality transmission unit that, when abnormality detection unit detects abnormality or receives abnormality signal, mechanically opens electric conductor unit, and a handle that mechanically brings into contact or opens electric conductor unit in a state in which abnormality detection unit does not detect abnormality and does not receive abnormality signal. Abnormality detection unit detects at least one of a short-circuit current and an overload current that occur on power feeding path as abnormality.
    Type: Application
    Filed: September 18, 2013
    Publication date: April 3, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Takuya KAGAWA, Tetsuji SHIBATA, Jun GODA, Haeree LEE
  • Patent number: 8570133
    Abstract: A transformer includes: a core assembly 1 composed of a pair of E-shaped cores 11, 12 each having two side leg portions 1a, 1b and a central leg portion 1c therebetween, end surfaces of the central leg portions 1c and end surfaces of the side leg portions 1a, 1b of the E-shaped cores 11, 12 oppose each other, respectively, and a gap G is provided between at least the end surfaces of the central leg portions 1c; a primary coil N1 formed by winding round wire around a perimeter of the central leg portion 1c; and a secondary coil N2 formed by winding rectangular wire around a perimeter of the central leg portion 1c by edgewise winding, wherein a space for reducing leakage flux from the gap G that acts on the secondary coil N2 is provided between the secondary coil N2 and the gap G.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: October 29, 2013
    Assignee: Panasonic Corporation
    Inventors: Yasuhiro Matsuda, Hideki Tamura, Takuya Kagawa, Tomohiro Ota
  • Publication number: 20130140901
    Abstract: A DC power supply system includes a DC power supply and a secondary battery for backing up the DC power supply. When a voltage of the DC power supply is lower than a voltage of the secondary battery, the DC power system adds an extra voltage to the voltage of the DC power supply to provide an input voltage to the secondary battery higher than the voltage of the secondary battery by using an electric power of the secondary battery, and the secondary battery is charged.
    Type: Application
    Filed: September 8, 2011
    Publication date: June 6, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Kazunori Kidera, Takuya Kagawa, Hideki Tamura, Hiroyuki Nishino, Mariko Nishi
  • Publication number: 20130127261
    Abstract: Provided is a DC connection device including a first connector connected to a DC power source side or a load side; and a second connector connected to the first connector. The first connector or the second connector has a semiconductor switch that is turned on when a portion of at least one of terminals of one of the first and second connectors is brought into contact with a terminal of the other of the first and second connectors, and is turned off before the terminal of the one of the first and second connectors is completely separated from the terminal of the other of the first and second connectors.
    Type: Application
    Filed: August 30, 2011
    Publication date: May 23, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Takuya Kagawa, Hideki Tamura
  • Publication number: 20120326829
    Abstract: A transformer includes: a core assembly 1 composed of a pair of E-shaped cores 11, 12 each having two side leg portions 1a, 1b and a central leg portion 1c therebetween, end surfaces of the central leg portions 1c and end surfaces of the side leg portions 1a, 1b of the E-shaped cores 11, 12 oppose each other, respectively, and a gap G is provided between at least the end surfaces of the central leg portions 1c; a primary coil N1 formed by winding round wire around a perimeter of the central leg portion 1c; and a secondary coil N2 formed by winding rectangular wire around a perimeter of the central leg portion 1c by edgewise winding, wherein a space for reducing leakage flux from the gap G that acts on the secondary coil N2 is provided between the secondary coil N2 and the gap G.
    Type: Application
    Filed: March 25, 2010
    Publication date: December 27, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Yasuhiro Matsuda, Hideki Tamura, Takuya Kagawa, Tomohiro Ota
  • Patent number: 8284528
    Abstract: The DC switch includes a housing (2) provided with a power connection terminal (2a) adapted in use to be connected to a power source, and a load connection terminal (2b) adapted in use to be connected to a load. A contact unit (1) is interposed between the power connection terminal (2a) and the load connection terminal (2b). The contact unit (1) has mechanical contacts (10), and a semiconductor switch (11) serially connected to the mechanical contacts (10). The DC switch further includes a switching mechanism unit (3) having an operating handle (30) used for manual operation and movably attached to the housing (2), a position detection unit (4) configured to detect an operating position of the operating handle (30), and a control unit (7). The switching mechanism unit (3) is configured to open and close the mechanical contacts (10) in response to the manual operation of the operating handle (30).
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: October 9, 2012
    Assignee: Panasonic Corporation
    Inventors: Hiroaki Koshin, Takuya Kagawa
  • Publication number: 20120228944
    Abstract: A DC power distribution system is equipped with a storage device having a first storage battery, which discharges to electrical apparatuses only during power failure, and a second storage battery, which discharges to electrical apparatuses when service is not interrupted. The electricity storage device and electrical apparatuses are supplied with DC power from a power generation device which generates electricity using natural energy, and DC power which has been converted from AC power supplied from a commercial power source. When the power supply from the electricity generation device and the commercial power source is interrupted, the first storage battery discharges power to the electrical apparatuses.
    Type: Application
    Filed: September 28, 2010
    Publication date: September 13, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Hiroaki Koshin, Takeshi Inoue, Takuya Kagawa, Masato Kasaya, Kazunori Kidera