Patents by Inventor Yukio Nishikawa

Yukio Nishikawa 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: 10636567
    Abstract: A heat treatment apparatus for a laminated body of amorphous alloy ribbon includes: a lamination jig that holds the laminated body of amorphous alloy ribbon; two heating plates that sandwich the laminated body from upper and lower surfaces in a lamination direction without coming into contact with the lamination jig; and a heating control apparatus that controls a heating temperature of the two heating plates.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: April 28, 2020
    Assignees: TOHOKU MAGNET INSTITUTE CO., LTD., PANASONIC CORPORATION
    Inventors: Akihiro Makino, Nobuyuki Nishiyama, Terutsugu Segawa, Tohru Kojima, Yukio Nishikawa
  • Patent number: 10566857
    Abstract: To provide an iron core and a motor for preventing reduction in motor drive efficiency. An iron core includes laminate section made up of a lamination of plural soft magnetic ribbons, fixed to metal substrate, and provided with winding, and fastening part that pressurizes laminate section in a lamination direction of soft magnetic ribbons. Also, the fastening part is disposed around an opening of through-hole that penetrates laminate section. Furthermore, a metal plate shaped so as not to cover winding section is provided between laminate section and fastening part. Besides, the motor includes a rotor and the iron core.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: February 18, 2020
    Assignee: Panasonic Corporation
    Inventors: Yukio Nishikawa, Taihei Okada, Tohru Kojima
  • Patent number: 10461589
    Abstract: A magnetic-plate laminated body includes: a laminated part made up of a plurality of laminated soft magnetic ribbons; first and second metal plates that sandwich the laminated part from upper and lower surfaces in a lamination direction of the laminated part; and a fastening mechanism that penetrates the first and second metal plates and the laminated part and fastening the laminated part by the first and second metal plates.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: October 29, 2019
    Assignees: TOHOKU MAGNET INSTITUTE CO., LTD., PANASONIC CORPORATION
    Inventors: Akihiro Makino, Nobuyuki Nishiyama, Yukio Nishikawa, Tohru Kojima, Takeshi Ogawa
  • Publication number: 20190202175
    Abstract: A laminated member as a laminate of a plurality of alloy ribbons is used. The laminated member has a side surface with a fracture surface. A laminated body as a laminate of the laminated member is used. A motor that includes a core using the laminated body is used. A method for manufacturing a laminated member is used that includes: fixing a plurality of amorphous ribbons to one another in a part of layers of the amorphous ribbons after laminating the amorphous ribbons; and punching a laminated member by cutting the laminate of the amorphous ribbons at a location that excludes the portion fixing the amorphous ribbons in the laminate.
    Type: Application
    Filed: February 8, 2018
    Publication date: July 4, 2019
    Inventors: YUKIO NISHIKAWA, HIDEAKI HAMADA, YOHEI HATTORI
  • Publication number: 20190181700
    Abstract: An iron core including a laminate of a plurality of fixed electromagnetic steel sheets, a laminate of alloy thin strips which is sandwiched between the laminate of the electromagnetic steel sheets, a fastening mechanism which penetrates the laminates of electromagnetic steel sheets and alloy thin strips, and a fixing base. The laminate of alloy thin strips reduces compressive and torsional forces acting on the laminate of alloy thin strips by using the iron core having a structure in which upper and lower portions of a laminate of alloy thin strips having nanocrystal grains are sandwiched together with laminates of amorphous alloy thin strips. Furthermore, a motor including a rotor and the above-described iron core is used.
    Type: Application
    Filed: February 18, 2019
    Publication date: June 13, 2019
    Inventors: YUKIO NISHIKAWA, MITSUO SAITOH
  • Publication number: 20190173328
    Abstract: An iron core including a laminate in which a plurality of nanocrystal thin strips are laminated, a board, and a fastener that fastens the laminate and the board, in which at least one of upper and lower surfaces of the laminate has a colored oxide film and an uncolored oxide film is used. Moreover, the iron core has a region of the colored oxide film wider than a region of the uncolored oxide film region is used. Furthermore, a motor uses the above-described iron core as a stator.
    Type: Application
    Filed: February 5, 2019
    Publication date: June 6, 2019
    Inventors: YUKIO NISHIKAWA, NAOKI NOJIRI
  • Publication number: 20190173329
    Abstract: A method for manufacturing a thin strip component, including a processing step of processing an amorphous thin strip member into a dimension shape larger than a target shape, and a heat treating step of heat treating and contracting the amorphous thin strip member processed in the processing step to form the amorphous thin strip member into a thin strip component of the target shape. A thin strip component which is a magnetic laminate in which a plurality of plate-shaped thin strip component members of the same shape are laminated, and has a recess over an entire side surface of the magnetic laminate is used. A motor including the thin strip component, a plurality of coils disposed on the thin strip component, and a rotor disposed between the plurality of coils is used.
    Type: Application
    Filed: February 5, 2019
    Publication date: June 6, 2019
    Inventors: YUKIO NISHIKAWA, HIDEAKI HAMADA, NAOKI NOJIRI
  • Publication number: 20190157921
    Abstract: Provided is a magnetic plate laminate comprising a laminate formed by stacking a plurality of thin strips, and fastening members provided in apertures in the laminate. Also provided is a method for manufacturing a magnetic laminate wherein the thin strips are amorphous thin strips and the magnetic body laminate is subjected to heat treatment, thereby forming nano-crystalline grains in the thin strips. Also provided is a motor equipped with a stator formed by stacking a plurality of the magnetic plate laminates, a securing plate for securing the stator, and a rotor arranged in an opening in the middle of the stator.
    Type: Application
    Filed: January 4, 2019
    Publication date: May 23, 2019
    Inventors: Yukio NISHIKAWA, Mituhiro IKEDA, Naoki NOJIRI
  • Patent number: 10249856
    Abstract: An assembled battery has a battery block configured by stacking a plurality of single batteries, and fixing components fixing the plurality of the single batteries. The fixing components include a pair of end plates disposed at both ends in a stacked direction of the plurality of the single batteries, and a metal band making the plurality of the single batteries in a compressed state by coupling end parts of the pair of the end plates each other. Each of the pair of the end plates has a peripheral part and a central part. The pair of the end plates respectively contact both end single batteries located at both ends in the stacked direction at the peripheral parts, and are respectively separated from both end single batteries at the central parts.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: April 2, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yukio Nishikawa, Tomomi Tanaka, Satoshi Higashida, Tsuneyuki Ejima
  • Publication number: 20180166213
    Abstract: A method for producing a magnetic core includes a processing step of giving a desired shape to a strip made of an alloy composition, a heat-treating step of forming bcc-Fe crystals, and then a stacking step of obtaining a magnetic core having a shape. Here, the alloy composition is Fe—B—Si—P—Cu—C and has an amorphous phase as a primary phase. In the heat-treating step, the strip is heated up to a temperature higher than a crystallization temperature of the alloy composition at a high heating rate.
    Type: Application
    Filed: July 1, 2016
    Publication date: June 14, 2018
    Applicants: TOHOKU MAGNET INSTITUTE CO., LTD., PANASONIC CORPORATION
    Inventors: Akihiro MAKINO, Nobuyuki NISHIYAMA, Kana TAKENAKA, Yukio NISHIKAWA, Terutsugu SEGAWA
  • Publication number: 20180159389
    Abstract: To provide an iron core and a motor for preventing reduction in motor drive efficiency. An iron core includes laminate section made up of a lamination of plural soft magnetic ribbons, fixed to metal substrate, and provided with winding, and fastening part that pressurizes laminate section in a lamination direction of soft magnetic ribbons. Also, the fastening part is disposed around an opening of through-hole that penetrates laminate section. Furthermore, a metal plate shaped so as not to cover winding section is provided between laminate section and fastening part. Besides, the motor includes a rotor and the iron core.
    Type: Application
    Filed: December 6, 2017
    Publication date: June 7, 2018
    Inventors: Yukio Nishikawa, Taihei Okada, Tohru Kojima
  • Patent number: 9944048
    Abstract: Provided are a laser-bonded component and a production method for same that ensure sufficient bonding strength using little laser energy and which cause little increase in surrounding temperature. A nickel layer, being a surface layer, is formed having sufficient thickness on the upper surface of a copper plate that is uppermost amongst at least two superposed copper plates, a laser is irradiated from above the nickel layer, a re-solidification section formed by fusing and alloying the copper in the copper plates and the nickel in the nickel layer is formed through to inside the bottommost copper plate, and the copper plates are bonded together. The re-solidification section having high breaking strength is formed by the alloying of the nickel and the copper. As a result, the copper plates can be bonded with a small welding surface area and little laser energy.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: April 17, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yukio Nishikawa, Tomomi Tanaka, Toshiki Itoi, Yoshiaki Kobayashi
  • Patent number: 9847663
    Abstract: A charging system includes battery pack and charger. During the charge of secondary battery, charge control unit controls charger so that the charger performs constant-current charge at a first charge current, and, when at least one of the following conditions is satisfied, switches the first charge current to a second charge current lower than the first charge current and continues the constant-current charge. The conditions include the condition that the SOC of secondary battery arrives at a threshold SOC value and the condition that the inter-terminal voltage of secondary battery arrives at a threshold inter-terminal voltage. In response to the degree of degradation of secondary battery, the charge control unit drops at least one of the threshold SOC value and the threshold inter-terminal voltage.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: December 19, 2017
    Assignee: SANYO ELECTRIC CO., LTD.
    Inventors: Yukio Nishikawa, Tatsuya Ishibashi
  • Patent number: 9799931
    Abstract: A cell block including a metal case including a plurality of pipe-shaped members and a plurality of single cells housed in each of the pipe-shaped members. Each of the pipe-shaped members is joined at joining surfaces, and the pipe-shaped members are joined and integrated. A member for housing single cells is provided, and the housing member is molded with a high degree of accuracy and is capable of being manufactured at low cost and in a simple manner.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: October 24, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hideaki Hamada, Yukio Nishikawa, Kazunori Kurumaya, Oose Okutani
  • Publication number: 20170229930
    Abstract: A magnetic-plate laminated body includes: a laminated part made up of a plurality of laminated soft magnetic ribbons; first and second metal plates that sandwich the laminated part from upper and lower surfaces in a lamination direction of the laminated part; and a fastening mechanism that penetrates the first and second metal plates and the laminated part and fastening the laminated part by the first and second metal plates.
    Type: Application
    Filed: February 7, 2017
    Publication date: August 10, 2017
    Inventors: Akihiro MAKINO, Nobuyuki NISHIYAMA, Yukio NISHIKAWA, Tohru KOJIMA, Takeshi OGAWA
  • Publication number: 20170229237
    Abstract: A heat treatment apparatus for a laminated body of amorphous alloy ribbon includes: a lamination jig that holds the laminated body of amorphous alloy ribbon; two heating plates that sandwich the laminated body from upper and lower surfaces in a lamination direction without coming into contact with the lamination jig; and a heating control apparatus that controls a heating temperature of the two heating plates.
    Type: Application
    Filed: February 7, 2017
    Publication date: August 10, 2017
    Inventors: Akihiro MAKINO, Nobuyuki NISHIYAMA, Terutsugu SEGAWA, Tohru KOJIMA, Yukio NISHIKAWA
  • Patent number: 9671055
    Abstract: To provide a vacuum heat insulating material having good heat insulating characteristics and capable of forming a corner part with high reliability. The vacuum heat insulating material includes a core material including an inorganic fiber assembly, and an outer covering member covering at least one surface of the core material, the inside of which is decompressed and sealed, in which the outer covering member includes an outermost resin layer and radiation prevention layers positioned inside the resin layer, in which the radiation prevention layers have an overlapping part where at least two or more radiation prevention layers are stacked at apart thereof.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: June 6, 2017
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yukio Nishikawa, Akira Takara
  • Publication number: 20170110695
    Abstract: An assembled battery has a battery block configured by stacking a plurality of single batteries, and fixing components fixing the plurality of the single batteries. The fixing components include a pair of end plates disposed at both ends in a stacked direction of the plurality of the single batteries, and a metal band making the plurality of the single batteries in a compressed state by coupling end parts of the pair of the end plates each other. Each of the pair of the end plates has a peripheral part and a central part. The pair of the end plates respectively contact both end single batteries located at both ends in the stacked direction at the peripheral parts, and are respectively separated from both end single batteries at the central parts.
    Type: Application
    Filed: April 7, 2015
    Publication date: April 20, 2017
    Inventors: YUKIO NISHIKAWA, TOMOMI TANAKA, SATOSHI HIGASHIDA, TSUNEYUKI EJIMA
  • Patent number: 9548477
    Abstract: The present invention provides a battery block that accommodates unit cells having higher capacities, and, even in case of abnormal heat generation in the unit cell, does not cause abnormal heat generation in the neighboring unit cells, thereby preventing a chain reaction of degradations and abnormalities of the accommodated unit cells. The battery block of the present invention includes a battery case having a minimum thickness section satisfying the relationship “K2/K1?K3?1”. K1 is the thermal conductance between the battery case and the unit cell. K2 is the thermal conductance of the minimum thickness section of the battery case between two neighboring holes for accommodating the respective unit cells. K3 is a ratio between the abnormal heat temperature of a reference cell and the ambient temperature causing abnormal heat generation in this cell.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: January 17, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yasuhiro Asaida, Yukio Nishikawa, Hideaki Hamada, Naoto Hosotani, Daisuke Kishii
  • Publication number: 20160138750
    Abstract: To provide a vacuum heat insulating material having good heat insulating characteristics and capable of forming a corner part with high reliability. The vacuum heat insulating material includes a core material including an inorganic fiber assembly, and an outer covering member covering at least one surface of the core material, the inside of which is decompressed and sealed, in which the outer covering member includes an outermost resin layer and radiation prevention layers positioned inside the resin layer, in which the radiation prevention layers have an overlapping part where at least two or more radiation prevention layers are stacked at apart thereof.
    Type: Application
    Filed: November 4, 2015
    Publication date: May 19, 2016
    Inventors: YUKIO NISHIKAWA, AKIRA TAKARA