Patents by Inventor Kazuhiro Kageyama

Kazuhiro Kageyama 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).

  • Publication number: 20210070375
    Abstract: A vehicle-body structure which prevent deformation of a floor tunnel caused by a side collision load transmitted from a cross member to the floor tunnel via a seat mounting bracket. A pair of left and right backbone frames extending in a vehicle front-rear direction are provided each of which faces a top and a side of a floor tunnel and is fixed to the floor tunnel. A tunnel reinforcement is provided that includes a front projection, an intermediate projection, and a rear projection abutting on an underside of the floor tunnel. The backbone frame includes multiple beads abutting on the floor tunnel. The tunnel reinforcement is fixed at the front projection, the intermediate projection, and the rear projection to the seat mounting bracket via the floor tunnel and is also fixed to the multiple beads of the backbone frame via the floor tunnel.
    Type: Application
    Filed: August 31, 2020
    Publication date: March 11, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Keisuke EBISUMOTO, Hirotaka NATSUME, Kazuhiro KAGEYAMA
  • Publication number: 20200298914
    Abstract: A vehicle underbody structure includes a catalyst disposed in a front portion of an exhaust pipe; a cover member for covering the catalyst from above; and a heat insulator disposed inside a tunnel portion behind the catalyst and configured to cover the exhaust pipe from above. The heat insulator is disposed away from the tunnel portion by a predetermined gap in an up-down direction. A front portion of the heat insulator and a rear portion of the cover member are disposed in such a way as to overlap each other. A front end of the heat insulator is disposed on the upper side with respect to a rear end of the cover member.
    Type: Application
    Filed: August 21, 2018
    Publication date: September 24, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Hironobu SAKASHITA, Masaru CHIKITA, Kazuhiro KAGEYAMA, Kohei MIYAMOTO
  • Publication number: 20200184220
    Abstract: An assistance device enabling communication with a wearable device includes: a memory; and a processor including hardware, the processor being configured to acquire line-of-sight information about a line of sight of a user wearing the wearable device, based on the line-of-sight information, generate blind region state information indicating a state of a blind region shielded by a shielding object in a visual field region of the user, and output the blind region state information to the wearable device.
    Type: Application
    Filed: December 2, 2019
    Publication date: June 11, 2020
    Inventors: Kazuhiro ITOH, Hitoshi Kumon, Shuntaro Shinohara, Yoshitaka Fuwamoto, Shioya Kageyama, Shintaro Inoue, Kiyofumi Nakajima
  • Patent number: 10658682
    Abstract: A fuel cell stack FS includes: a stack A that includes a single cells C that are stacked, each of the single cells including a frame 2 that holds an outer periphery of a membrane electrode assembly 1 and a pair of separators 3, 4 sandwiching the membrane electrode assembly 1 and the frame 2; and a case 50 that houses the stack A. The frame 2 comprises a protrusion 11 that protrudes outward from an outer periphery of a frame body 2A beyond an outer peripheral edge of the pair of separators 3, 4. A protrusion length of the protrusion 11 is greater than at least a gap between the frame 2 and one of the pair of separators 3, 4, and the protrusion 11 is bendable with respect to the frame body 2A. The protrusions prevent a contact between the separators 3, 4 of the single cell C and a contact between the end faces of the separators 3, 4 and the case 50 so as to prevent a short circuit of the single cell C.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: May 19, 2020
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Kazuhiro Kageyama, Kazuyuki Sato
  • Patent number: 10618570
    Abstract: In a lower vehicle-body structure of an automotive vehicle which comprises a third tunnel reinforcement provided at a lower-face side of a floor tunnel and a first seat-attaching bracket connecting the floor tunnel and a floor panel, the third tunnel reinforcement comprises a front-side contact portion, a middle contact portion, and a rear-side contact portion which respectively contact the floor tunnel, and a first protrusion portion and a second protrusion portion which respectively protrude in a direction leaving from a lower face of the floor tunnel, which are formed integrally. Further, a flange portion of the first seat-attaching bracket is connected to the front-side contact portion, the middle contact portion, and the rear-side contact portion of the third tunnel reinforcement through the floor tunnel.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: April 14, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventor: Kazuhiro Kageyama
  • Patent number: 10583867
    Abstract: In a lower vehicle-body structure of an automotive vehicle comprising a pair of right-and-left side sills, a floor panel, and a first seat-attaching bracket supporting a front seat, an upper wall portion of the first seat-attaching bracket comprises an attachment portion to which the front seat is attached, a slant portion (connection portion) which extends downward from an outward-side edge side of the attachment portion, and a stepped-down portion which extends from the slant portion toward the side sill, and a bead which protrudes upward and extends from the slant portion toward the side sill in the vehicle width direction is provided at the stepped-down portion.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: March 10, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Kazuhiro Kageyama, Hidetaka Goto, Shogo Sakomoto
  • Publication number: 20190382053
    Abstract: A lower vehicle-body structure comprises a vehicle floor comprising a bottom face portion and a floor tunnel, a pair of right-and-left first floor cross members extending in a vehicle width direction and provided on both sides of the floor tunnel, a pair of right-and-left second floor cross members extending in the vehicle width direction and provided on both sides of the floor tunnel, the second floor cross members being spaced rearwardly from the first floor cross members, a first connecting member provided to extend in the vehicle width direction at a position overlapping the first floor cross members in the vehicle longitudinal direction, and a second connecting member provided to extend in the vehicle width direction at a position overlapping the second floor cross members in the vehicle longitudinal direction.
    Type: Application
    Filed: June 10, 2019
    Publication date: December 19, 2019
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Hirotaka NATSUME, Kazuhiro KAGEYAMA, Keisuke EBISUMOTO, Hidenori MATSUOKA
  • Publication number: 20190382052
    Abstract: A lower vehicle-body structure of the present invention comprises a vehicle floor, a first floor cross member extending in a vehicle width direction, a second floor cross member extending in the vehicle width direction, the second floor cross member being spaced, in a vehicle longitudinal direction, apart from the first floor cross member, a side sill extending in the vehicle longitudinal direction and provided at an end portion, in the vehicle width direction, of the vehicle floor, a floor frame extending in the vehicle longitudinal direction and provided on an inward side, in the vehicle width direction, of the side sill, and attaching members for attaching a seat to a vehicle body. The attaching members are fixed to the side sill, the first floor cross member, and/or the second floor cross member.
    Type: Application
    Filed: June 10, 2019
    Publication date: December 19, 2019
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Hirotaka NATSUME, Kazuhiro KAGEYAMA, Keisuke EBISUMOTO, Hidenori MATSUOKA
  • Publication number: 20190382054
    Abstract: A lower vehicle-body structure comprises a vehicle floor comprising a bottom face portion and a floor tunnel which protrudes upwardly and extends in a vehicle longitudinal direction, a pair of right-and-left floor cross members extending in a vehicle width direction on both sides of the floor tunnel, and a connecting member provided to extend in the vehicle width direction at a position which overlaps the floor cross members in the vehicle longitudinal direction and be fixed to at least one of the vehicle floor and the floor cross members at plural fixation positions. These plural fixation positions are located at plural different levels in a range of a height of the floor cross members.
    Type: Application
    Filed: June 13, 2019
    Publication date: December 19, 2019
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Hirotaka NATSUME, Kazuhiro KAGEYAMA, Hiroaki SUUMEN, Yuki KUWANO, Tsuyoshi IWATA, Keisuke EBISUMOTO, Hidenori MATSUOKA
  • Publication number: 20190341634
    Abstract: A fuel cell stack FS includes: a stack A that includes a single cells C that are stacked, each of the single cells including a frame 2 that holds an outer periphery of a membrane electrode assembly 1 and a pair of separators 3, 4 sandwiching the membrane electrode assembly 1 and the frame 2; and a case 50 that houses the stack A. The frame 2 comprises a protrusion 11 that protrudes outward from an outer periphery of a frame body 2A beyond an outer peripheral edge of the pair of separators 3, 4. A protrusion length of the protrusion 11 is greater than at least a gap between the frame 2 and one of the pair of separators 3, 4, and the protrusion 11 is bendable with respect to the frame body 2A. The protrusions prevent a contact between the separators 3, 4 of the single cell C and a contact between the end faces of the separators 3, 4 and the case 50 so as to prevent a short circuit of the single cell C.
    Type: Application
    Filed: October 17, 2016
    Publication date: November 7, 2019
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Kazuhiro KAGEYAMA, Kazuyuki SATO
  • Patent number: 10418649
    Abstract: A fuel cell stack includes a plurality of cell modules each formed by stacking a plurality of fuel cells, each of the plurality of fuel cells having a membrane electrode assembly having an insulating member at an outer periphery portion thereof and paired separators sandwiching the membrane electrode assembly, and by attaching the insulating members of adjacent fuel cells together, and a seal plate interposed between the stacked cell modules. The seal plate includes a plurality of manifold holes from which two power-generation gases flow separately through the plurality of fuel cells, and a first seal member provided along a peripheral portion of each of the plurality of manifold holes to seal a corresponding one of the two power-generation gases flowing through the manifold hole.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: September 17, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yasuhiro Numao, Kazuhiro Kageyama
  • Patent number: 10340533
    Abstract: A fuel cell in a fuel cell stack is provided with a gas seal projection and a coolant seal projection projecting from at least one of two separators toward a membrane electrode assembly. The gas seal projection and the coolant seal projection are provided with recesses serving as coolant passages on the side opposite to the membrane electrode assembly. At least one of the gas seal projection and the coolant seal projection is provided with a resistance portion for suppressing a flow of a coolant out of a power generation portion cooling portion.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: July 2, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Kazuhiro Kageyama, Satomi Furukawa
  • Patent number: 10297839
    Abstract: A fuel cell stack has stacked individual fuel cells, each of the fuel cells having a cell frame, and an anode separator and a cathode separator disposed on respective sides of the cell frame, in which an electrolyte membrane joined with an anode side gas diffusion layer and a cathode side gas diffusion layer on respective sides thereof is disposed in the cell frame, an anode side load bearing member that bonds and fixes the anode separator, the cell frame, and the gas diffusion layer to each other, so as to receive a compressive load acting in a stacking direction of the fuel cell, and a cathode side load bearing member that bonds and fixes the cathode separator, the cell frame, and the gas diffusion layer to each other so as to receive a compressive load acting in the stacking direction of the fuel cell.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: May 21, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Kazuhiro Kageyama, Takanori Oku, Hiromi Sugimoto
  • Patent number: 10199663
    Abstract: A cell structure for a fuel cell stack that is formed by stacking unit cells C each including a membrane electrode assembly 1 and a pair of separators 2 holding the membrane electrode assembly 1 therebetween. The membrane electrode assembly 1 includes a frame 3 in the periphery having such a size as to extend outward over the edges of the separators 2. Communication holes 21, 22 in communication with the front and back sides are formed in the frame 3 in an area from a sealing part 11 between frames 3 adjacent in the cell stacking direction to a sealing parts 12 between the membrane electrode assembly 1 and the separators 2. The air in a space Q formed between the inner and outer sealing parts 11, 12 is allowed to be released to the outside through the communication holes 21, 22, and a breakage of the adhesive of the sealing parts 11, 12 is thereby prevented.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: February 5, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Kazuhiro Kageyama
  • Patent number: 10193179
    Abstract: The fuel cell stack FS includes; a stacked plurality of single cells C each including a frame 1 of a membrane electrode assembly 2 and a pair of separators 3, 4; and a sealing member 6 disposed between the plurality of single cells C. The pair of separators 3, 4 include respective supporting portions 9, 10 that are in contact with the frame 1, and the sealing member 6 is disposed on one supporting member 10. Further, the supporting portions 9, 10 of the separators 3, 4 have different sizes so that an overlapped portion W is formed in which a base surface 7 where the supporting portion 9 of one separator 3 is in contact with the frame 1 is overlapped with a top surface 8 where the supporting portion 10 of the other separator 4 is in contact with the frame 1 in the stacking direction. The overlapped portion W receives and transmits reaction force of the sealing member 6 between the single cells, which prevents narrowing of gas channels or decrease of the sealing surface pressure.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: January 29, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Kazuhiro Kageyama
  • Publication number: 20190009834
    Abstract: In a lower vehicle-body structure of an automotive vehicle comprising a pair of right-and-left side sills, a floor panel, and a first seat-attaching bracket supporting a front seat, an upper wall portion of the first seat-attaching bracket comprises an attachment portion to which the front seat is attached, a slant portion (connection portion) which extends downward from an outward-side edge side of the attachment portion, and a stepped-down portion which extends from the slant portion toward the side sill, and a bead which protrudes upward and extends from the slant portion toward the side sill in the vehicle width direction is provided at the stepped-down portion.
    Type: Application
    Filed: April 23, 2018
    Publication date: January 10, 2019
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Kazuhiro KAGEYAMA, Hidetaka GOTO, Shogo SAKOMOTO
  • Publication number: 20190013528
    Abstract: A fuel cell in a fuel cell stack is provided with a gas seal projection and a coolant seal projection projecting from at least one of two separators toward a membrane electrode assembly. The gas seal projection and the coolant seal projection are provided with recesses serving as coolant passages on the side opposite to the membrane electrode assembly. At least one of the gas seal projection and the coolant seal projection is provided with a resistance portion for suppressing a flow of a coolant out of a power generation portion cooling portion.
    Type: Application
    Filed: July 17, 2015
    Publication date: January 10, 2019
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Kazuhiro KAGEYAMA, Satomi FURUKAWA
  • Publication number: 20190009832
    Abstract: In a lower vehicle-body structure of an automotive vehicle which comprises a third tunnel reinforcement provided at a lower-face side of a floor tunnel and a first seat-attaching bracket connecting the floor tunnel and a floor panel, the third tunnel reinforcement comprises a front-side contact portion, a middle contact portion, and a rear-side contact portion which respectively contact the floor tunnel, and a first protrusion portion and a second protrusion portion which respectively protrude in a direction leaving from a lower face of the floor tunnel, which are formed integrally. Further, a flange portion of the first seat-attaching bracket is connected to the front-side contact portion, the middle contact portion, and the rear-side contact portion of the third tunnel reinforcement through the floor tunnel.
    Type: Application
    Filed: April 23, 2018
    Publication date: January 10, 2019
    Applicant: MAZDA MOTOR CORPORATION
    Inventor: Kazuhiro KAGEYAMA
  • Publication number: 20180301735
    Abstract: The fuel cell stack FS includes; a stacked plurality of single cells C each including a frame 1 of a membrane electrode assembly 2 and a pair of separators 3, 4; and a sealing member 6 disposed between the plurality of single cells C. The pair of separators 3, 4 include respective supporting portions 9, 10 that are in contact with the frame 1, and the sealing member 6 is disposed on one supporting member 10. Further, the supporting portions 9, 10 of the separators 3, 4 have different sizes so that an overlapped portion W is formed in which a base surface 7 where the supporting portion 9 of one separator 3 is in contact with the frame 1 is overlapped with a top surface 8 where the supporting portion 10 of the other separator 4 is in contact with the frame 1 in the stacking direction. The overlapped portion W receives and transmits reaction force of the sealing member 6 between the single cells, which prevents narrowing of gas channels or decrease of the sealing surface pressure.
    Type: Application
    Filed: October 5, 2015
    Publication date: October 18, 2018
    Applicant: NISSAN MOTOR CO., LTD.
    Inventor: Kazuhiro KAGEYAMA
  • Patent number: 10090537
    Abstract: A fuel cell stack includes at least two cell modules adjacent to each other, the at least two cell modules each being formed by stacking a plurality of fuel cells into an integrated unit and a seal plate interposed in a cooling flow channel defined between separators of the at least two cell modules, the cooling flow channel configured to allow a cooling fluid to flow therethrough. The seal plate includes a manifold portion in which a plurality of manifold holes are formed to allow two power-generation gases to flow separately through the plurality of manifold holes and through the plurality of fuel cells and a seal member provided along a peripheral portion of each of the plurality of manifold holes to provide sealing for a corresponding one of the two power-generation gases flowing through the manifold hole.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: October 2, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Yasuhiro Numao, Kazuhiro Kageyama, Shigetaka Uehara