Patents by Inventor Tatsuya TOKUMASU

Tatsuya TOKUMASU 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: 10608262
    Abstract: A fuel cell vehicle comprises a fuel cell module configured to include a fuel cell stack, a tank configured to store a gas that is supplied to the fuel cell stack, a fuel cell placement chamber configured to place the fuel cell module therein and a tank placement chamber formed on a rear side of the fuel cell placement chamber in a vehicle longitudinal direction of the fuel cell vehicle under a floor of the fuel cell vehicle and configured to place the tank therein. The fuel cell module is placed vertically above the tank such as not to overlap with the tank when being viewed in the vehicle longitudinal direction.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: March 31, 2020
    Assignees: Toyota Jidosha Kabushiki Kaisha, Taiho Kogyo Co., Ltd.
    Inventors: Hiroaki Nishiumi, Tatsuya Tokumasu
  • Patent number: 10522846
    Abstract: A fuel cell stack 100 includes a fuel cell stack 10, and an end plate 30 placed at an end of the fuel cell stack 10. The end plate 30 includes a metallic plate-like body 32, and a resin layer 60 formed on a surface 32b of the plate-like body 32. The plate-like body 32 includes flow holes 39 for a reactant gas and a cooling medium, and a stripe-shaped protrusion 38 protruding from the surface 32b and which divides the surface 32b into an inner area containing the flow holes 39 and an outer area outside the inner area. The protrusion 38 includes a vertical portion 38a protruding from the surface 32b, and a jutted portion 38b jutted from a distal end of the vertical portion 38a toward the inner area. The resin layer 60 is formed in the inner area to cover a surface 38as of the vertical portion 38a facing the inner area as well as at least part of the jutted portion 38b.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: December 31, 2019
    Assignees: Toyota Jidosha Kabushiki Kaisha, Taiho Kogyo Co., Ltd., Toyoda Gosei Co., Ltd.
    Inventors: Tatsuhiko Shimizu, Hitoshi Hamada, Yutaka Hotta, Tatsuya Tokumasu, Tadanobu Ota, Yoshiki Nakamura
  • Patent number: 10439247
    Abstract: A fuel cell stack comprises a stacked body, an end plate and a case configured such that the stacked body is placed therein. The end plate is arranged to cover an end face of the stacked body in a stacking direction and an end face of the case in the stacking direction and is fastened to the end face of the case. A placement groove is formed in at least one surface out of two surfaces of the end plate and the case opposed to each other, such that a seal member is placed in the placement groove. The end plate includes a resin layer formed to continuously cover an inner circumferential wall surface of the fluid flow path hole, a surface of the end plate opposed to the stacked body, and an outer circumferential side end of the placement groove.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: October 8, 2019
    Assignees: Toyota Jidosha Kabushiki Kaisha, Taiho Kogyo Co., Ltd., Toyoda Gosei Co., Ltd.
    Inventors: Tatsuhiko Shimizu, Hitoshi Hamada, Tatsuya Tokumasu, Tadanobu Ota, Yoshiki Nakamura
  • Patent number: 10179520
    Abstract: A fuel cell vehicle comprises a fuel cell module, a vehicle body frame, a plurality of mounting portions and a tank. A front portion of the vehicle body frame that a front side mounting portion is attached to is configured to be movable upward in a vehicle height direction when a load is applied in the vehicle longitudinal direction. A rear side mounting portion configured to mount a rear side of the fuel cell module in the vehicle longitudinal direction to the vehicle body frame is configured to be more easily breakable, compared with the front side mounting portion, when the load is applied in the vehicle longitudinal direction.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: January 15, 2019
    Assignees: Toyota Jidosha Kabushiki Kaisha, Taiho Kogyo Co., Ltd.
    Inventors: Shigetaka Yoshikawa, Hiroaki Nishiumi, Tatsuya Tokumasu
  • Publication number: 20180170211
    Abstract: A fuel cell vehicle comprises a fuel cell module, a vehicle body frame, a plurality of mounting portions and a tank. A front portion of the vehicle body frame that a front side mounting portion is attached to is configured to be movable upward in a vehicle height direction when a load is applied in the vehicle longitudinal direction. A rear side mounting portion configured to mount a rear side of the fuel cell module in the vehicle longitudinal direction to the vehicle body frame is configured to be more easily breakable, compared with the front side mounting portion, when the load is applied in the vehicle longitudinal direction.
    Type: Application
    Filed: November 30, 2017
    Publication date: June 21, 2018
    Inventors: Shigetaka YOSHIKAWA, Hiroaki NISHIUMI, Tatsuya TOKUMASU
  • Publication number: 20180123149
    Abstract: A fuel cell vehicle comprises a fuel cell module configured to include a fuel cell stack, a tank configured to store a gas that is supplied to the fuel cell stack, a fuel cell placement chamber configured to place the fuel cell module therein and a tank placement chamber formed on a rear side of the fuel cell placement chamber in a vehicle longitudinal direction of the fuel cell vehicle under a floor of the fuel cell vehicle and configured to place the tank therein. The fuel cell module is placed vertically above the tank such as not to overlap with the tank when being viewed in the vehicle longitudinal direction.
    Type: Application
    Filed: October 27, 2017
    Publication date: May 3, 2018
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TAIHO KOGYO CO., LTD.
    Inventors: Hiroaki NISHIUMI, Tatsuya TOKUMASU
  • Publication number: 20180047995
    Abstract: A fuel cell stack 100 includes a fuel cell stack 10, and an end plate 30 placed at an end of the fuel cell stack 10. The end plate 30 includes a metallic plate-like body 32, and a resin layer 60 formed on a surface 32b of the plate-like body 32. The plate-like body 32 includes flow holes 39 for a reactant gas and a cooling medium, and a stripe-shaped protrusion 38 protruding from the surface 32b and which divides the surface 32b into an inner area containing the flow holes 39 and an outer area outside the inner area. The protrusion 38 includes a vertical portion 38a protruding from the surface 32b, and a jutted portion 38b jutted from a distal end of the vertical portion 38a toward the inner area. The resin layer 60 is formed in the inner area to cover a surface 38as of the vertical portion 38a facing the inner area as well as at least part of the jutted portion 38b.
    Type: Application
    Filed: August 3, 2017
    Publication date: February 15, 2018
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOYODA GOSEI CO., LTD., TAIHO KOGYO CO., LTD.
    Inventors: Tatsuhiko SHIMIZU, Hitoshi HAMADA, Yutaka HOTTA, Tatsuya TOKUMASU, Tadanobu OTA, Yoshiki NAKAMURA
  • Publication number: 20180034091
    Abstract: A fuel cell stack comprises a stacked body, an end plate and a case configured such that the stacked body is placed therein. The end plate is arranged to cover an end face of the stacked body in a stacking direction and an end face of the case in the stacking direction and is fastened to the end face of the case. A placement groove is formed in at least one surface out of two surfaces of the end plate and the case opposed to each other, such that a seal member is placed in the placement groove. The end plate includes a resin layer formed to continuously cover an inner circumferential wall surface of the fluid flow path hole, a surface of the end plate opposed to the stacked body, and an outer circumferential side end of the placement groove.
    Type: Application
    Filed: July 24, 2017
    Publication date: February 1, 2018
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TAIHO KOGYO CO., LTD., TOYODA GOSEI CO., LTD.
    Inventors: Tatsuhiko SHIMIZU, Hitoshi HAMADA, Tatsuya TOKUMASU, Tadanobu OTA, Yoshiki NAKAMURA