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: 11594341
    Abstract: A pit gate includes a gate body which is inserted between a pool portion storing water and a canal portion connected to the pool portion and is configured to change a flow state of the water, and a seal portion (6) which is accommodated in a groove-shaped accommodation recess formed in the gate body and seals between the pool portion and the gate body. The seal portion (6) includes a low-rigidity portion (10) which is relatively easily deformed by a load according to a water pressure from the pool portion side, and a high-rigidity portion (11) which is provided on the pool portion side of the low-rigidity portion and is not easily deformed relatively by the load.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: February 28, 2023
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hiromu Okamoto, Hisanori Watanabe, Hidetaka Kafuku, Shunsuke Tanaka, Hiroki Mitsui, Yasuharu Suda, Takao Ito, Hayao Kurono, Shuhei Dobara, Takumi Hori
  • 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: 20220308508
    Abstract: An image forming apparatus includes a heating rotary member, a pressure rotary member, a nip portion formed by the rotary members, a temperature adjustment control section controlling a temperature of the heating rotary member to a target temperature, a cleaning web removing toner adhering to the heating rotary member, and a controller selectively executing one of a cleaning mode and a non-cleaning mode. A first basis weight and a second basis weight greater than the first predetermined basis weight are set, in a job that mixedly uses recording media with the first and second basis weights. When the controller executes the non-cleaning mode, the temperature adjustment control section sets a target temperature of a recording medium with a basis weight less than or equal to the first basis weight to a temperature lower than a target temperature of the recording medium in the cleaning mode.
    Type: Application
    Filed: March 28, 2022
    Publication date: September 29, 2022
    Inventors: Mitsuru Hasegawa, Hiroki Kawai, Ayano Ogata, Yasuharu Toratani, Suguru Takeuchi, Youichi Chikugo, Hidekazu Tatezawa, Yutaro Tsuno, Kenichi Tanaka, Rikiya Takemasa
  • 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
  • Patent number: 11020785
    Abstract: A method and apparatus for manufacturing a press component without generating cracks in a flange on an inner circumferential side of a curved portion includes press working by a free bending method on a blank consisting of an ultra-high tensile strength steel sheet. A press component is manufactured by performing cold press working on a blank of an ultra-high tensile strength steel sheet. By the press working, a material inflow facilitating portion that increases the amount by which a portion of the blank to be formed into an end portion of the press component flows into a portion of the blank to be formed into a flange on an inner circumferential side of the curved portion of the press component is provided in the vicinity of the portion of the blank to be formed into the flange on an inner circumferential side of the curved portion of the press component.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: June 1, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Masahiro Saito, Ryuichi Nishimura, Yasuharu Tanaka, Takashi Miyagi, Takashi Yamamoto
  • Patent number: 10946427
    Abstract: A blank that is a material for an elongated press formed article having a substantially hat shaped lateral cross-section profile including a top plate section, a ridge line section, a flange section, and vertical wall section, and configured with a first portion in which the top plate section has a fixed width, and a second portion including a curved portion in which the top plate section exhibits an L-shape in plan view due to the vertical wall section, the ridge line section, and the flange section curving along with the width of the top plate section gradually increasing. The blank has a shape of an opened-out shape of the press formed article, additionally with a first recess, a protrusion, and a second recess provided to an edge of an excess portion additionally provided at an edge of a location that will form the flange section configuring the curved portion.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: March 16, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takashi Miyagi, Kei Misawa, Yasuharu Tanaka, Misao Ogawa, Toshimitsu Aso
  • Patent number: 10828685
    Abstract: A blank for forming a pressed article, the blank including a flat pattern edge configuring an edge on one length direction side of the blank, and an excess portion formed at the flat pattern edge. An edge of the excess portion includes a first convex portion that protrudes toward the one length direction side of the blank with respect to the flat pattern edge, a first concave portion that is adjacent to the first convex portion at a width direction outer side of the blank, that is formed in a concave shape, and that connects the flat pattern edge and the first convex portion together, and a second concave portion that is adjacent to the first convex portion at a width direction inner side of the blank, that is formed in a concave shape, and that connects the flat pattern edge and the first convex portion together.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: November 10, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takashi Miyagi, Yasuharu Tanaka, Misao Ogawa, Toshimitsu Aso
  • Publication number: 20200311325
    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: Application
    Filed: December 25, 2017
    Publication date: October 1, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yasuharu TANAKA, Takashi MIYAGI, Misao OGAWA
  • Publication number: 20200290105
    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: Application
    Filed: December 6, 2018
    Publication date: September 17, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Kazunori OOOKA, Toshimitsu ASO, Hiroshi YOSHIDA, Daisuke YASUFUKU, Yasuharu TANAKA, Takashi MIYAGI, Junichiro SUZUKI, Shinobu YAMAMOTO