Patents by Inventor Kenji Nagumo

Kenji Nagumo 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: 12097788
    Abstract: A vehicle seat frame includes a seat cushion frame, left and right links, a connection member, left and right slide rails, and left and right risers. The seat cushion frame includes left and right side frames. The left and right links each have a one end portion connected to respective front portions of the left and right side frames. The connection member connects the left and right links together in the seat left-right direction. The left and right slide rails are disposed below the left and right side frames and are attached to a floor section of the vehicle. The left and right risers are respectively attached to the left and right slide rails, are connected to respective other end portions of the left and right links, and are configured to be impacted by the connection member under load from the occupant during a head-on collision of the vehicle.
    Type: Grant
    Filed: December 21, 2022
    Date of Patent: September 24, 2024
    Assignees: NHK Spring Co., Ltd, Subaru Corporation, Toyota Boshoku Kabushiki Kaisha
    Inventors: Syunichirou Osa, Hiroki Matsuda, Jun Shirai, Masafumi Takano, Fumito Kitanaka, Kenji Nagumo, Suguru Ishikawa, Naoki Hayashi
  • Publication number: 20240304847
    Abstract: A fuel cell stack including a cell stacked body formed by stacking power generation cells in a predetermined direction, an exhaust gas flow path penetrating the cell stacked body in the predetermined direction so as to discharge a reaction gas supplied to the plurality of power generation cells, and a flow path forming portion forming a drainage flow path so that water flows from an upstream side to a downstream side of the exhaust gas flow path. The flow path forming portion includes a communicating tube disposed in the exhaust gas flow path so as to communicate with the upstream side and the downstream side of the exhaust gas flow path respectively through a first opening and a second opening of the communicating tube, and the flow path forming portion further includes a diaphragm portion at an inlet of the drainage flow path.
    Type: Application
    Filed: February 26, 2024
    Publication date: September 12, 2024
    Inventors: Kenji Nagumo, Naoki Tanaka, Kensuke Umezawa, Fumiya Arai
  • Publication number: 20240304834
    Abstract: A fuel cell stack including an outside unit disposed outside a cell stacked body and a communicating tube disposed in an exhaust gas flow path to communicate with an upstream and downstream sides of the exhaust gas flow path through a first and second opening. A first and second support portions supporting a first and second end portions on a first and second end sides of the communicating tube are formed in tubular shapes so as to surround the first and second end portions and communicate an internal space of the communicating tube with the exhaust gas flow path. The first and second support portions include tapered portions so that edge portions on outer peripheral surface sides of the first and second end surfaces are capable of abutting on peripheral surfaces of through-holes over a half circumference or longer in a circumferential direction, respectively.
    Type: Application
    Filed: February 26, 2024
    Publication date: September 12, 2024
    Inventors: Kenji Nagumo, Naoki Tanaka, Kensuke Umezawa, Fumiya Arai
  • Publication number: 20240304833
    Abstract: A fuel cell stack including a cell stacked body, an exhaust gas flow path penetrating the cell stacked body in a predetermined direction so as to discharge a reaction gas supplied to a plurality of power generation cells, and a communicating tube disposed in the exhaust gas flow path so as to communicate with an upstream side and a downstream side of the exhaust gas flow path respectively through a first opening and a second opening of the communicating tube. The exhaust gas flow path includes a reduced diameter portion configured to gradually decrease a flow path area toward an outlet of the exhaust gas flow path, and the second opening communicates with the exhaust gas flow paths between an end on a small diameter side of the reduced diameter portion and the outlet of the exhaust gas flow path.
    Type: Application
    Filed: February 26, 2024
    Publication date: September 12, 2024
    Inventors: Kenji Nagumo, Naoki Tanaka, Kensuke Umezawa, Fumiya Arai
  • Patent number: 12054080
    Abstract: In a vehicle seat frame, a connection member that connects left and right links together in a seat left-right direction is disposed below a rear portion of a cushion pan included in a seat cushion frame. A sloped surface sloped with a downward gradient toward a seat rear side is formed at a lower surface of the rear portion of the cushion pan. The sloped surface of the cushion pan slides in a seat rearward and diagonally downward direction relative to the connection member when the cushion pan deforms in a seat downward direction under load from the occupant during a head-on collision of the vehicle.
    Type: Grant
    Filed: December 22, 2022
    Date of Patent: August 6, 2024
    Assignees: NHK SPRING CO., LTD., SUBARU CORPORATION
    Inventors: Syunichirou Osa, Hiroki Matsuda, Jun Shirai, Masafumi Takano, Kenji Nagumo, Fumito Kitanaka, Suguru Ishikawa, Naoki Hayashi
  • Publication number: 20240246458
    Abstract: A vehicle seat includes: a seat cushion frame; a side finisher provided at a side of the seat cushion; a circuit board positioned between the side frame and the side finisher in a side view; a support case supporting the circuit board and positioned between the side frame and the side finisher in a side view; and a board-connected cable including a first end connected to the circuit board, a flexible cable main body that extends from the first end, and a second end that is a connector connectable to an electric cable for supplying power to an electric actuator. The support case is integrated to the side finisher; the support case is installable to the side frame; and the support case includes a cable protection section that, in a side view, overlaps with at least part of the cable main body and that does not overlap with at least the connector.
    Type: Application
    Filed: January 22, 2024
    Publication date: July 25, 2024
    Inventors: Kensuke YOSHIGA, Yukinori MIKITA, Kenji NAGUMO, Fumito KITANAKA
  • Publication number: 20240198873
    Abstract: A vehicle seat includes: a seat cushion frame; a seat back frame; a routing member extending from a rear face side of a seat back to a lower side of a seat cushion; a screen member provided extending from the rear face side of the seat back to the lower side of the seat cushion. The screen member includes: a main body portion disposed at a lower side of a rear face of the seat back, and a projecting portion projecting from the main body portion and disposed at the lower side of the seat cushion; and a resilient member, one end, in a length direction, of the resilient member being attached to the projecting portion, at which the main body portion is disposed, another end of the resilient member being attached to the seat cushion frame, and the resilient member being extensible in accordance with a tilting action of the seat back.
    Type: Application
    Filed: December 15, 2023
    Publication date: June 20, 2024
    Inventors: Kensuke YOSHIGA, Hiroki JINEDA, Kenji NAGUMO, Fumito KITANAKA, Mitsutoshi SAITO
  • Publication number: 20240157862
    Abstract: A vehicle seat includes a seat cushion having an upward and downward movement mechanism configured to adjust a position of the seat cushion in a range between an upper most position and a lower most position in a seat vertical direction; and a shielding member configured to bend, and shielding a lower side of the seat cushion. The shielding member includes: an upper section disposed at a lower surface side of the seat cushion; a middle section disposed at a lower side of the upper section, provided with an inducing portion serving as a trigger for bending of the shielding member, and being configured to follow a movement, in the seat vertical direction, of the seat cushion by changing a bending angle at a bending start point portion that is bent by the inducing portion; and a lower section disposed at a lower side of the middle section.
    Type: Application
    Filed: November 13, 2023
    Publication date: May 16, 2024
    Inventors: Kensuke YOSHIGA, Hiroki JINEDA, Kenji NAGUMO, Fumito KITANAKA, Mitsutoshi SAITO
  • Publication number: 20240116416
    Abstract: In a cushion skin, left and right side surface skin front portions are fixed to a cushion frame of the seat cushion. The left and right side surface skin rear portions are respectively connected to the left and right side surface skin front portions, and each have a lower extending portion extending downward of the rear portion of the cushion pad. The connecting portion is disposed at the lower side of the rear portion of the cushion pad, and connects the distal end portions of each lower extending portion of the left and right side surface skin rear portions in the seat left-right direction. In each lower extending portion, a front side in the seat front-rear direction expands wider outward in the seat left-right direction than a rear side.
    Type: Application
    Filed: October 6, 2023
    Publication date: April 11, 2024
    Inventors: Syunji TAKAZAWA, Hideki HASUMI, Atsushi KAGEYAMA, Fumito KITANAKA, Kenji NAGUMO
  • Publication number: 20230202361
    Abstract: A vehicle seat frame includes a seat cushion frame, left and right links, a connection member, left and right slide rails, and left and right risers. The seat cushion frame includes left and right side frames. The left and right links each have a one end portion connected to respective front portions of the left and right side frames. The connection member connects the left and right links together in the seat left-right direction. The left and right slide rails are disposed below the left and right side frames and are attached to a floor section of the vehicle. The left and right risers are respectively attached to the left and right slide rails, are connected to respective other end portions of the left and right links, and are configured to be impacted by the connection member under load from the occupant during a head-on collision of the vehicle.
    Type: Application
    Filed: December 21, 2022
    Publication date: June 29, 2023
    Inventors: Syunichirou OSA, Hiroki MATSUDA, Jun SHIRAI, Masafumi TAKANO, Fumito KITANAKA, Kenji NAGUMO, Suguru ISHIKAWA, Naoki HAYASHI
  • Publication number: 20230202363
    Abstract: A seat cushion frame configuring a framework of a seat cushion for an occupant of a vehicle to sit on and including left and right side frames and a cushion pan. The left and right side frames are disposed at left and right side portions of the seat cushion. The cushion pan connects upper end portions of front portions of the left and right side frames together in a seat left-right direction, and is weakened locally at a weakened portion provided at a seat left-right direction center of a rear end portion of the cushion pan.
    Type: Application
    Filed: December 22, 2022
    Publication date: June 29, 2023
    Inventors: Syunichirou OSA, Hiroki MATSUDA, Jun SHIRAI, Masafumi TAKANO, Kenji NAGUMO, Fumito KITANAKA, Suguru ISHIKAWA
  • Publication number: 20230202362
    Abstract: A seat cushion frame configuring framework of a seat cushion for an occupant of a vehicle to sit on, and including left and right side frames, a cushion pan, and a reinforcement member. The left and right side frames are disposed at left and right side portions of the seat cushion. The cushion pan connects upper end portions of front portions of the left and right side frames together in a seat left-right direction. The reinforcement member includes the left and right reinforcement portions respective affixed to the seat left-right direction sides of the rear end portion of the cushion pan.
    Type: Application
    Filed: December 22, 2022
    Publication date: June 29, 2023
    Inventors: Syunichirou OSA, Hiroki MATSUDA, Jun SHIRAI, Masafumi TAKANO, Fumito KITANAKA, Kenji NAGUMO, Suguru ISHIKAWA
  • Publication number: 20230202360
    Abstract: In a vehicle seat frame, a connection member that connects left and right links together in a seat left-right direction is disposed below a rear portion of a cushion pan included in a seat cushion frame. A sloped surface sloped with a downward gradient toward a seat rear side is formed at a lower surface of the rear portion of the cushion pan. The sloped surface of the cushion pan slides in a seat rearward and diagonally downward direction relative to the connection member when the cushion pan deforms in a seat downward direction under load from the occupant during a head-on collision of the vehicle.
    Type: Application
    Filed: December 22, 2022
    Publication date: June 29, 2023
    Inventors: Syunichirou OSA, Hiroki MATSUDA, Jun SHIRAI, Masafumi TAKANO, Kenji NAGUMO, Fumito KITANAKA, Suguru ISHIKAWA, Naoki HAYASHI
  • Publication number: 20230202359
    Abstract: A seatback frame including left and right side frames, a lower frame, and a sacrum support section. The left and right side frames extend in a seat up-down direction inside left and right side portions of a seatback of a vehicle seat. The lower frame spans between lower end portions of the left and right side frames. The sacrum support section extends from a lower end portion of the lower frame toward a seat front side and supports a sacral region of a seated occupant from a seat rear side. A weakened portion that is weakened by a load from the seat front side is provided to the sacrum support section.
    Type: Application
    Filed: December 22, 2022
    Publication date: June 29, 2023
    Inventors: Daisuke KOBAYASHI, Kensuke YOSHIGA, Akihiko MIZUNO, Fumito KITANAKA, Kenji NAGUMO
  • Patent number: 10297842
    Abstract: A fuel cell stack includes a stacked body, a first insulator and a second insulator. The stacked body includes power generation cells. The power generation cells are stacked in a stacking direction. The power generation cells include a first end power generation cell a second end power generation cell. Each of the power generation cells includes a membrane electrode assembly, a cathode separator and an anode separator. The first end power generation cell has an outermost cathode separator. The second end power generation cell has an outermost anode separator. The first insulator has a first recess in which a first heat-insulating body and a first terminal plate are accommodated. The second insulator has a second recess in which a second heat-insulating body and a second terminal plate are accommodated. A first number of first stacked heat-insulating layers is larger than a second number of second stacked heat-insulating layers.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: May 21, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Tadashi Nishiyama, Kenji Nagumo, Ryo Jinba, Yoshiro Ichikawa, Yuta Ikeda
  • Patent number: 10020518
    Abstract: A fuel cell stack includes a stacked body, a first insulator, and a first shim. The stacked body includes electrolyte-electrode assemblies and separators. The electrolyte-electrode assemblies are stacked in a stacking direction and have a first end electrolyte-electrode assembly disposed at a first end of the stacked body. The separators includes a first end separator disposed at the first end of the stacked body between the first end electrolyte-electrode assembly and a first contact end plate having a first contact surface which the first end separator contacts. The first shim is provided in a first recess between the first contact end plate and the first insulator and has a thickness such that an outer peripheral surface of the first end separator is positioned between the first contact surface of the first contact end plate and an outer peripheral surface of the first insulator in the stacking direction.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: July 10, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kenji Nagumo, Naoki Yamano, Tsuyoshi Kobayashi, Hiroaki Ota, Syuji Sato
  • Patent number: 9831516
    Abstract: A fuel cell includes a membrane electrode assembly, a separator, a reactant gas channel, a reactant gas manifold, and a buffer portion. The buffer portion includes a first buffer region and a second buffer region. The second buffer region is located in a vicinity of the reactant gas manifold and is deeper than the first buffer region in a stacking direction. Embossed portion groups are arranged in a plurality of rows in the second buffer region between the reactant gas manifold and the first buffer region. Each of the embossed portion groups includes a plurality of embossed portions. A disposition density of the plurality of embossed portions of one of the embossed portion groups in a vicinity of the reactant gas manifold is lower than a disposition density of the plurality of embossed portions of another of the embossed portion groups in a vicinity of the first buffer region.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: November 28, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kentaro Ishida, Kenji Nagumo, Yoshihito Kimura, Yu Tomana
  • Patent number: 9685664
    Abstract: A fuel cell stack includes fuel cells, a reactant gas channel, a reactant gas inlet manifold, a reactant gas outlet manifold, an inlet buffer portion, and an outlet buffer portion. A reactant gas flows through the reactant gas channel along a surface of a separator. The reactant gas flows through the reactant gas inlet manifold and the reactant gas outlet manifold in a stacking direction. The inlet buffer portion connects an inlet of the reactant gas channel to the reactant gas inlet manifold. The inlet buffer portion includes linear inlet guide protrusions. Inlet guide channels are provided between the linear inlet guide protrusions and connect the reactant gas inlet manifold to the reactant gas channel. A pitch between the linear inlet guide protrusions increases in accordance with an increase in a distance from the reactant gas inlet manifold to the linear inlet guide protrusions.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: June 20, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kenji Nagumo, Kentaro Ishida, Keisuke Suda, Yuji Asano, Akihiro Matsui
  • Publication number: 20170110743
    Abstract: A fuel cell stack includes a stacked body, a first insulator and a second insulator. The stacked body includes power generation cells. The power generation cells are stacked in a stacking direction. The power generation cells include a first end power generation cell a second end power generation cell. Each of the power generation cells includes a membrane electrode assembly, a cathode separator and an anode separator. The first end power generation cell has an outermost cathode separator. The second end power generation cell has an outermost anode separator. The first insulator has a first recess in which a first heat-insulating body and a first terminal plate are accommodated. The second insulator has a second recess in which a second heat-insulating body and a second terminal plate are accommodated. A first number of first stacked heat-insulating layers is larger than a second number of second stacked heat-insulating layers.
    Type: Application
    Filed: October 13, 2016
    Publication date: April 20, 2017
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Tadashi NISHIYAMA, Kenji NAGUMO, Ryo JINBA, Yoshiro ICHIKAWA, Yuta IKEDA
  • Publication number: 20160181623
    Abstract: A fuel cell stack includes a stacked body, a first insulator, and a first shim. The stacked body includes electrolyte-electrode assemblies and separators. The electrolyte-electrode assemblies are stacked in a stacking direction and have a first end electrolyte-electrode assembly disposed at a first end of the stacked body. The separators includes a first end separator disposed at the first end of the stacked body between the first end electrolyte-electrode assembly and a first contact end plate having a first contact surface which the first end separator contacts. The first shim is provided in a first recess between the first contact end plate and the first insulator and has a thickness such that an outer peripheral surface of the first end separator is positioned between the first contact surface of the first contact end plate and an outer peripheral surface of the first insulator in the stacking direction.
    Type: Application
    Filed: December 21, 2015
    Publication date: June 23, 2016
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Kenji Nagumo, Naoki Yamano, Tsuyoshi Kobayashi, Hiroaki Ota, Syuji Sato