Patents by Inventor Yukio Matsunaga

Yukio Matsunaga 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: 11196324
    Abstract: A method of manufacturing a stacked core includes: forming a stack by stacking a plurality of core members, each of the plurality of core members including one or more blanked members blanked by a die from a metal plate along a predetermined shape; removing one core member of the plurality of core members from the stack; supplying adhesive to the one core member removed from the stack; and stacking the one core member next to an adjacent core member of the plurality of core members so that the adhesive is placed between the one core member and the adjacent core member.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: December 7, 2021
    Inventors: Satoshi Matsubayashi, Yukio Matsunaga, Yusuke Hasuo, Yusuke Eto, Hayato Nakayama
  • Publication number: 20200108591
    Abstract: A method of manufacturing a stack includes a sequence of operations including separating a sheet from a temporary stack of sheets, rotating the sheet after it has been separated, and applying an adhesive to the sheet, while it is being rotated, by dispensing the adhesive to a surface of the sheet by at least one dispenser and restacking a plurality of the sheets, to which the adhesive was applied by repeating the sequence of operations, to form a manufactured stack of sheets.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 9, 2020
    Applicant: Mitsui High-tec, Inc.
    Inventors: Yukio MATSUNAGA, Yusuke HASUO, Yusuke ETO, Hayato NAKAYAMA, Takaya SAKAGUCHI
  • Publication number: 20190305654
    Abstract: A method of manufacturing a stacked core includes: forming a stack by stacking a plurality of core members, each of the plurality of core members including one or more blanked members blanked by a die from a metal plate along a predetermined shape; removing one core member of the plurality of core members from the stack; supplying adhesive to the one core member removed from the stack; and stacking the one core member next to an adjacent core member of the plurality of core members so that the adhesive is placed between the one core member and the adjacent core member.
    Type: Application
    Filed: June 20, 2019
    Publication date: October 3, 2019
    Applicant: Mitsui High-tec, Inc.
    Inventors: Satoshi MATSUBAYASHI, Yukio MATSUNAGA, Yusuke HASUO, Yusuke ETO, Hayato NAKAYAMA
  • Patent number: 10128726
    Abstract: A method for manufacturing a laminate used for manufacturing a rotor is provided. The method includes: (a) stamping out a plurality of workpieces from a metal sheet wherein each of the workpieces has a temporarily-interlocking portion; and (b) obtaining a laminate including the workpieces integrated together by the temporarily-interlocking portion, wherein each of the workpieces further has a shaft hole, a magnet insertion hole, and a weight-reducing hole formed between the shaft hole and the magnet insertion hole, and the temporarily-interlocking portion is provided to the weight-reducing hole.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: November 13, 2018
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Yukio Matsunaga, Hisatomo Ishimatsu, Yusuke Hasuo, Masahiro Izumi, Manabu Yazaki
  • Patent number: 10033232
    Abstract: This disclosure relates to a method for manufacturing a laminate used for manufacturing a laminated core including a circumferential yoke part and a plurality of magnetic pole parts radially extending from the yoke part. This method includes: feeding a metal sheet drawn from a roll thereof to a progressive die; stamping out a plurality of workpieces from the metal sheet in the progressive die, wherein each of the workpiece comprises a temporarily-interlocking portion between adjacent magnetic pole portions; and stacking the workpieces to integrate these workpieces together by the temporarily-interlocking portion to obtain the laminate.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: July 24, 2018
    Assignees: Honda Motor Co., Ltd., Mitsui High-tec, Inc.
    Inventors: Yukio Matsunaga, Hisatomo Ishimatsu, Yusuke Hasuo, Masahiro Izumi, Manabu Yazaki
  • Patent number: 9520761
    Abstract: A production method for the laminated iron core includes a first process that segment iron core pieces which respectively have circular arc angles obtained by dividing 360° as an angle of circumference into m are separated from a belt shaped iron core material and mounted on a mount base, the segment iron core pieces are carried to a laminating position of a rotary laminating mechanism by a pusher and the rotary laminating mechanism including the carried segment iron core piece therein is rotated by 360°/m and a second process that the first process is repeated to form an annularly connected iron core piece in which the segment iron core pieces are annularly arranged. The second process is repeated to form a caulked and laminated iron core having a prescribed thickness. During the second process, the segment iron core pieces are caulked and laminated in the rotary laminating mechanism.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: December 13, 2016
    Assignee: MITSUI HIGH-TEC, INC.
    Inventors: Satoshi Matsubayashi, Yukio Matsunaga, Iwao Myojin
  • Publication number: 20160233748
    Abstract: The disclosure relates to a method for manufacturing a laminate used for manufacturing a rotor, the method includes: (a) stamping out a plurality of workpieces from a metal sheet wherein each of the workpieces has a temporarily-interlocking portion; and (b) obtaining a laminate including the workpieces integrated together by the temporarily-interlocking portion, wherein each of the workpieces further has a shaft hole, a magnet insertion hole, and a weight-reducing hole formed between the shaft hole and the magnet insertion hole, and the temporarily-interlocking portion is provided to the weight-reducing hole.
    Type: Application
    Filed: December 23, 2015
    Publication date: August 11, 2016
    Inventors: Yukio Matsunaga, Hisatomo Ishimatsu, Yusuke Hasuo, Masahiro Izumi, Manabu Yazaki
  • Publication number: 20160164350
    Abstract: This disclosure relates to a method for manufacturing a laminate used for manufacturing a laminated core including a circumferential yoke part and a plurality of magnetic pole parts radially extending from the yoke part. This method includes: feeding a metal sheet drawn from a roll thereof to a progressive die; stamping out a plurality of workpieces from the metal sheet in the progressive die, wherein each of the workpiece comprises a temporarily-interlocking portion between adjacent magnetic pole portions; and stacking the workpieces to integrate these workpieces together by the temporarily-interlocking portion to obtain the laminate.
    Type: Application
    Filed: December 7, 2015
    Publication date: June 9, 2016
    Inventors: Yukio MATSUNAGA, Hisatomo ISHIMATSU, Yusuke HASUO, Masahiro IZUMI, Manabu YAZAKI
  • Publication number: 20150270762
    Abstract: A production method for the laminated iron core includes a first process that segment iron core pieces which respectively have circular arc angles obtained by dividing 360° as an angle of circumference into m are separated from a belt shaped iron core material and mounted on a mount base, the segment iron core pieces are carried to a laminating position of a rotary laminating mechanism by a pusher and the rotary laminating mechanism including the carried segment iron core piece therein is rotated by 360°/m and a second process that the first process is repeated to form an annularly connected iron core piece in which the segment iron core pieces are annularly arranged. The second process is repeated to form a caulked and laminated iron core having a prescribed thickness. During the second process, the segment iron core pieces are caulked and laminated in the rotary laminating mechanism.
    Type: Application
    Filed: October 16, 2013
    Publication date: September 24, 2015
    Applicant: MITSUI HIGH-TEC, INC.
    Inventors: Satoshi Matsubayashi, Yukio Matsunaga, Iwao Myojin
  • Patent number: 4495124
    Abstract: A method and apparatus is provided for forming an abrasion resistant sheet from a sheet of orientable thermoplastic polymer material in one continuous process which can be effected by a single continuous production line apparatus. A method and apparatus is also provided for treating the surface of an oriented sheet with heated rolls for creating a fused surface layer on each side of the sheet. A method and apparatus is also provided for slitting a wider sheet into a plurality of strips at elevated temperatures with the strap under tension and with a staggered array of fixed blades. Further, a method and apparatus is provided for treating an oriented strip having a non-uniform thickness so as to conform the surfaces of the strip in a substantially uniformly flat and parallel configuration.
    Type: Grant
    Filed: October 24, 1983
    Date of Patent: January 22, 1985
    Assignee: Signode Corporation
    Inventors: Donald L. Van Erden, Russell J. Gould, Yukio A. Matsunaga
  • Patent number: 4428720
    Abstract: Apparatus is provied for forming an abrasion resistant sheet from a sheet of orientable thermoplastic polymer material in one continuous production line apparatus. Apparatus is also provided for treating the surface of an oriented sheet with heated rolls for creating a fused surface layer on each side of the sheet.
    Type: Grant
    Filed: January 28, 1982
    Date of Patent: January 31, 1984
    Assignee: Signode Corporation
    Inventors: Donald L. Van Erden, Russell J. Gould, Yukio A. Matsunaga