Patents by Inventor Yasuharu Tanaka

Yasuharu Tanaka 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: 12030105
    Abstract: This structural member is manufactured using a structural member manufacturing device including a first clamping part having a first lower clamping member and a second upper clamping member disposed to face each other and capable of being opened and closed; a second clamping part having a third lower clamping member and a fourth upper clamping member disposed to face each other corresponding to the first lower clamping member and the second upper clamping member and capable of being opened and closed; and clamping part driver for allowing the first clamping part and the second clamping part to be relatively separated from each other while causing a position in an X-axis direction and a position in a Z-axis direction to correspond to each other.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: July 9, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Satoshi Shirakami, Yasuharu Tanaka, Koichi Sato, Shigeru Yonemura, Tohru Yoshida
  • Patent number: 11925968
    Abstract: A method for manufacturing a press-formed article (100) includes a first step for forming a base sheet portion, a first rising portion, and a first strip portion from a sheet-shaped workpiece having a first edge portion and a second edge portion; and a second step for forming a second rising portion by causing a strip-shaped first zone including the second edge portion to be disposed between a first upper die and a first lower die from both sides, causing a second zone adjacent to the first zone to be disposed between a second upper die and a second lower die from both sides, and moving the first upper die and the first lower die relative to the second upper die and the second lower die, wherein, in the second step, a part of the second rising portion which is connected to a vertical ridge line (108) is shear-deformed.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: March 12, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Ryo Kuroda, Yasuharu Tanaka, Takashi Miyagi, Misao Ogawa
  • Patent number: 11879948
    Abstract: In electrical fault detection device that is mounted on a vehicle and includes: energy storage unit to be mounted in a state of being insulated from a chassis ground of the vehicle; first switch inserted into positive wire; and second switch inserted into negative wire, in order to suppress a total cost by not using an expensive component while securing detection accuracy, electrical fault detection device further includes coupling capacitor, AC output unit, first voltage measurement unit, first determination unit, voltage dividing circuit, second voltage measurement unit, and second determination unit. Voltage dividing circuit is connected between positive wire between first switch and one end of load and negative wire between second switch and the other end of load.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: January 23, 2024
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Masato Nakayama, Tomonori Kunimitsu, Taisuke Hamada, Yasuharu Tanaka
  • Publication number: 20230415216
    Abstract: This press-formed article includes: a top sheet portion; a sidewall continuing to the top sheet portion via a convex ridge line portion; a flange continuing to the sidewall via a concaved ridge line portion; and an outward flange continuing from an edge portion of the top sheet portion to an edge portion of the flange, via an edge portion of the convex ridge line portion, an edge portion of the sidewall, and an edge portion of the concaved ridge line portion, wherein in the same unit, an average thickness TAve, a minimum thickness TMin, and a maximum thickness TMax of the outward flange satisfy Equation 1 and Equation 2. 0.8×TAve?TMin<TAve??(Equation 1) TAve<TMax<1.
    Type: Application
    Filed: September 7, 2023
    Publication date: December 28, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yasuharu TANAKA, Misao OGAWA, Takashi MIYAGI, Toshimitsu ASO, Hiroyuki TANOUE, Ryo KURODA
  • Publication number: 20230381848
    Abstract: A manufacturing method of a press-formed article (200) including: press-forming a metal sheet into a preformed article (100) including a preformed bottom sheet portion (110), a first preformed standing wall portion (120a), a second preformed standing wall portion (120b), a preformed ridge portion (130) provided between the first preformed standing wall portion (120a) and the second preformed standing wall portion (120b), and a swollen portion (140) provided between the preformed bottom sheet portion (110) and the first and second preformed standing wall portions (120a) and (120b); and press-forming the preformed article (100) into a press-formed article (200) including a bottom sheet portion (210), a first standing wall portion (220a) adjacent to the bottom sheet portion (210), a second standing wall portion (220b) adjacent to the bottom sheet portion (210), and a ridge portion (230) provided between the first standing wall portion (220a) and the second standing wall portion (220b).
    Type: Application
    Filed: October 8, 2021
    Publication date: November 30, 2023
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Minoru SUGAWARA, Takashi YAMAMOTO, Yasuharu TANAKA, Takashi MIYAGI, Misao OGAWA, Junki NATORI
  • Patent number: 11806773
    Abstract: This press-formed article includes: a top sheet portion; a sidewall continuing to the top sheet portion via a convex ridge line portion; a flange continuing to the sidewall via a concaved ridge line portion; and an outward flange continuing from an edge portion of the top sheet portion to an edge portion of the flange, via an edge portion of the convex ridge line portion, an edge portion of the sidewall, and an edge portion of the concaved ridge line portion, wherein in the same unit, an average thickness TAve, a minimum thickness TMin, and a maximum thickness TMax of the outward flange satisfy Equation 1 and Equation 2. 0.8×TAve?TMin<TAve??(Equation 1) TAve<TMax?1.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: November 7, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yasuharu Tanaka, Misao Ogawa, Takashi Miyagi, Toshimitsu Aso, Hiroyuki Tanoue, Ryo Kuroda
  • Patent number: 11789088
    Abstract: A BMU, which is a battery management unit, includes a current measuring unit that measures a current charged to and discharged from a battery; a voltage measuring unit that measures a voltage of the battery during measurement of the current by the current measuring unit; a BPF processing unit that extracts a component in a prescribed frequency band, of the current measured by the current measuring unit; a BPF processing unit that extracts a component in the prescribed frequency band, of the voltage measured by the voltage measuring unit; and an impedance calculating unit that calculates an impedance of the battery using the extracted current component and voltage component.
    Type: Grant
    Filed: March 15, 2022
    Date of Patent: October 17, 2023
    Assignee: PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventors: Yasuharu Tanaka, Hiroya Murao, Ryuji Nagata
  • Publication number: 20220371070
    Abstract: A method for manufacturing a press-formed article (100) includes a first step for forming a base sheet portion, a first rising portion, and a first strip portion from a sheet-shaped workpiece having a first edge portion and a second edge portion; and a second step for forming a second rising portion by causing a strip-shaped first zone including the second edge portion to be disposed between a first upper die and a first lower die from both sides, causing a second zone adjacent to the first zone to be disposed between a second upper die and a second lower die from both sides, and moving the first upper die and the first lower die relative to the second upper die and the second lower die, wherein, in the second step, a part of the second rising portion which is connected to a vertical ridge line (108) is shear-deformed.
    Type: Application
    Filed: September 23, 2020
    Publication date: November 24, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Ryo KURODA, Yasuharu TANAKA, Takashi MIYAGI, Misao OGAWA
  • Publication number: 20220331855
    Abstract: This structural member (W1) is manufactured using a structural member manufacturing device including: a first clamping part (10) having a first lower clamping member (11) and a second upper clamping member (12) disposed to face each other and capable of being opened and closed; a second clamping part (20) having a third lower clamping member (21) and a fourth upper clamping member (22) disposed to face each other corresponding to the first lower clamping member (11) and the second upper clamping member (12) and capable of being opened and closed; and clamping part driving means for allowing the first clamping part (10) and the second clamping part (20) to be relatively separated from each other while causing a position in an X-axis direction and a position in a Z-axis direction to correspond to each other.
    Type: Application
    Filed: September 25, 2020
    Publication date: October 20, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Satoshi SHIRAKAMI, Yasuharu TANAKA, Koichi SATO, Shigeru YONEMURA, Tohru YOSHIDA
  • Publication number: 20220299573
    Abstract: A BMU, which is a battery management unit, includes a current measuring unit that measures a current charged to and discharged from a battery; a voltage measuring unit that measures a voltage of the battery during measurement of the current by the current measuring unit; a BPF processing unit that extracts a component in a prescribed frequency band, of the current measured by the current measuring unit; a BPF processing unit that extracts a component in the prescribed frequency band, of the voltage measured by the voltage measuring unit; and an impedance calculating unit that calculates an impedance of the battery using the extracted current component and voltage component.
    Type: Application
    Filed: March 15, 2022
    Publication date: September 22, 2022
    Inventors: Yasuharu TANAKA, Hiroya MURAO, Ryuji NAGATA
  • Patent number: 11400505
    Abstract: A press tooling includes a distance member pivotably supported by a holder; and a moving device provided on a first die unit. The holder is provided in a movable manner with respect to a punch in a press direction, and a pad is provided in a movable manner with respect to a die in the press direction. The distance member is pivotable between a home position in which the distance member does not come into contact with the second die and a preventive position in which the distance between the pad and the holder in the press direction is prevented from being equal to or less than a predetermined distance. As the holder moves relative to the punch in the first direction, the moving device causes the distance member to pivot from the home position toward the preventive position.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: August 2, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Kazunori Oooka, Toshimitsu Aso, Hiroshi Yoshida, Daisuke Yasufuku, Yasuharu Tanaka, Takashi Miyagi, Junichiro Suzuki, Shinobu Yamamoto
  • Patent number: 11351591
    Abstract: A hold device is attached to press tooling. The hold device includes a distance member attached to a holder, and a moving device attached to a first die unit. The holder is provided in a movable manner with respect to a punch in a press direction, and a pad is provided in a movable manner with respect to a die in the press direction. The distance member is pivotable between a home position in which the distance member does not come into contact with the second die and a preventive position in which the distance between the pad and the holder in the press direction is prevented from being equal to or less than a predetermined distance. As the holder moves relative to the punch in the first direction, the moving device causes the distance member to pivot from the home position toward the preventive position.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: June 7, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Kazunori Oooka, Toshimitsu Aso, Hiroshi Yoshida, Daisuke Yasufuku, Yasuharu Tanaka, Takashi Miyagi, Junichiro Suzuki, Shinobu Yamamoto
  • Publication number: 20220120823
    Abstract: In electrical fault detection device that is mounted on a vehicle and includes: energy storage unit to be mounted in a state of being insulated from a chassis ground of the vehicle; first switch inserted into positive wire; and second switch inserted into negative wire, in order to suppress a total cost by not using an expensive component while securing detection accuracy, electrical fault detection device further includes coupling capacitor, AC output unit, first voltage measurement unit, first determination unit, voltage dividing circuit, second voltage measurement unit, and second determination unit. Voltage dividing circuit is connected between positive wire between first switch and one end of load and negative wire between second switch and the other end of load.
    Type: Application
    Filed: December 9, 2019
    Publication date: April 21, 2022
    Inventors: MASATO NAKAYAMA, TOMONORI KUNIMITSU, TAISUKE HAMADA, YASUHARU TANAKA
  • Publication number: 20220097116
    Abstract: A press forming method includes a first step of pinching one part of a metal sheet by means of a die and a pad, and a second step of moving a punch in a direction in which the punch approaches the die relatively to perform press forming on the metal sheet. The die has a first support surface which has an edge including a curved portion. The pad has a second support surface facing the first support surface of the die. The first support surface includes a first flat portion, and a first deformation portion which protrudes or is recessed with respect to the first flat portion. The second support surface includes a second flat portion which faces the first flat portion, and a second deformation portion which is recessed or protrudes with respect to the second flat portion so as to correspond to the first deformation portion. The first deformation portion is provided on a normal line of the curved portion as viewed from a pressing direction.
    Type: Application
    Filed: January 24, 2020
    Publication date: March 31, 2022
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Minoru SUGAWARA, Yasuharu TANAKA, Takashi MIYAGI, Misao OGAWA, Junki NATORI
  • Patent number: 11270047
    Abstract: A method of forming a metal sheet into a target shape by press-forming, such that the metal sheet is formed into an intermediate shape that is different from the target shape and then the target shape is formed from the intermediate shape, the method includes: when forming the intermediate shape from the metal sheet, forming the intermediate shape by forming a first region including at least a portion at which a ratio of sheet thickness reduction from the metal sheet is larger when the target shape is formed via the intermediate shape than when the target shape is formed directly from the metal sheet.
    Type: Grant
    Filed: December 25, 2017
    Date of Patent: March 8, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yasuharu Tanaka, Takashi Miyagi, Misao Ogawa
  • Publication number: 20210323044
    Abstract: This press-formed article includes: a top sheet portion; a sidewall continuing to the top sheet portion via a convex ridge line portion; a flange continuing to the sidewall via a concaved ridge line portion; and an outward flange continuing from an edge portion of the top sheet portion to an edge portion of the flange, via an edge portion of the convex ridge line portion, an edge portion of the sidewall, and an edge portion of the concaved ridge line portion, wherein in the same unit, an average thickness TAve, a minimum thickness TMin, and a maximum thickness TMax of the outward flange satisfy Equation 1 and Equation 2. 0.8×TAve?TMin<TAve ??(Equation 1) TAve<TMax?1.
    Type: Application
    Filed: June 25, 2021
    Publication date: October 21, 2021
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yasuharu TANAKA, Misao OGAWA, Takashi MIYAGI, Toshimitsu ASO, Hiroyuki TANOUE, Ryo KURODA
  • Patent number: 11135633
    Abstract: A method or apparatus to produce an L-shaped pressed component includes, where a portion of a blank, having tensile strength of 1180 MPa or more, is held in a state of being clamped by a blank holder and a die, and a portion of the blank, to be formed into a top plate is held in a state of being clamped by a pad and a punch; the second step where a vertical wall, a concave ridge and a flange on the inner side of a curved portion are formed by, bend forming with a bending die, forming one, two or more material inflow promoting portion; and the third step where the die is moved in a direction toward a side where the blank holder is disposed to form a vertical wall, a concave ridge, and a flange on the outer side of the curved portion by draw forming.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: October 5, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yasuharu Tanaka, Toshimitsu Aso, Takashi Miyagi, Misao Ogawa, Shinobu Yamamoto, Keita Ikegami
  • Patent number: 11097331
    Abstract: This press-formed article includes: a top sheet portion; a sidewall continuing to the top sheet portion via a convex ridge line portion; a flange continuing to the sidewall via a concaved ridge line portion; and an outward flange continuing from an edge portion of the top sheet portion to an edge portion of the flange, via an edge portion of the convex ridge line portion, an edge portion of the sidewall, and an edge portion of the concaved ridge line portion, wherein in the same unit, an average thickness TAve, a minimum thickness TMin, and a maximum thickness TMax of the outward flange satisfy Equation 1 and Equation 2. 0.8×TAve?TMin<TAve??(Equation 1) TAve<TMax?1.2×TAve??(Equation 2).
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: August 24, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yasuharu Tanaka, Misao Ogawa, Takashi Miyagi, Toshimitsu Aso, Hiroyuki Tanoue, Ryo Kuroda
  • Patent number: 11059085
    Abstract: The manufacturing method includes a first step in which a pad holding state is established and a second step in which pad draw forming is performed after the first step is completed.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: July 13, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takashi Miyagi, Yasuharu Tanaka, Misao Ogawa, Toshimitsu Aso, Takashi Yamamoto
  • Publication number: 20210178446
    Abstract: A press tooling includes a distance member pivotably supported by a holder; and a moving device provided on a first die unit. The holder is provided in a movable manner with respect to a punch in a press direction, and a pad is provided in a movable manner with respect to a die in the press direction. The distance member is pivotable between a home position in which the distance member does not come into contact with the second die and a preventive position in which the distance between the pad and the holder in the press direction is prevented from being equal to or less than a predetermined distance. As the holder moves relative to the punch in the first direction, the moving device causes the distance member to pivot from the home position toward the preventive position.
    Type: Application
    Filed: December 6, 2018
    Publication date: June 17, 2021
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Kazunori OOOKA, Toshimitsu ASO, Hiroshi YOSHIDA, Daisuke YASUFUKU, Yasuharu TANAKA, Takashi MIYAGI, Junichiro SUZUKI, Shinobu YAMAMOTO