Patents by Inventor Tetsuo Uozumi

Tetsuo Uozumi 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: 11260761
    Abstract: In the fuel cell vehicle provided with the motor and configured to drive the motor with power of at least one of the fuel cell 1 and the battery, the fuel cell having a DC voltage of less than 60 V is disposed in the rear portion of the vehicle and the battery is disposed in the front relative to the fuel cell.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: March 1, 2022
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Koichi Tanaka, Tetsuo Uozumi, Tomoyuki Hanada, Shinichi Akiba
  • Publication number: 20200369166
    Abstract: In the fuel cell vehicle provided with the motor and configured to drive the motor with power of at least one of the fuel cell 1 and the battery, the fuel cell having a DC voltage of less than 60 V is disposed in the rear portion of the vehicle and the battery is disposed in the front relative to the fuel cell.
    Type: Application
    Filed: August 14, 2017
    Publication date: November 26, 2020
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Koichi TANAKA, Tetsuo UOZUMI, Tomoyuki HANADA, Shinichi AKIBA
  • Publication number: 20180138526
    Abstract: A fuel cell generates electricity while air sent from a compressor and fuel sent from a fuel container by a fuel pump are supplied thereto. The fuel is reformed by a reformer and then supplied to the fuel cell. Temperature of the air is increased by an oxidizing agent heater. To the oxidizing agent heater, liquid fuel in the fuel container is supplied through a liquid fuel pipe and fuel vapor vaporizing from the liquid fuel in the fuel container is supplied through a fuel vapor pipe.
    Type: Application
    Filed: April 28, 2015
    Publication date: May 17, 2018
    Applicant: NISSAN MOTOR CO., LTD.
    Inventor: Tetsuo UOZUMI
  • Patent number: 7682715
    Abstract: A vehicle equipped with a fuel cell system is disclosed including a vehicle body having a floor, and a fuel cell system disposed below the floor and including a fuel cell stack and a water supply device connected to a water storage tank. The water supply device includes component elements (a pump, a water supply conduit and a water recovery conduit) that are disposed below the floor of the vehicle body in a higher area than the water storage tank.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: March 23, 2010
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Tetsuo Uozumi
  • Patent number: 7550219
    Abstract: Three ejectors 5, 7, 9 with differences in specification are connected in parallel between a hydrogen storage unit 3 and a fuel cell 1. Respective ejectors 5, 7, 9 allow excess hydrogen, discharged from the fuel cell 1, to pass through a hydrogen recirculating common flow passage 35 and to be recirculated through three recirculation branch flow passages 37, 39, 41. Shut-off mechanisms 13, 15, 19, 21, 25, 27 are disposed at both upstream and downstream sides of the respective ejectors 5, 7, 9, with closing and opening of the shut-off mechanisms located at both the upstream and downstream sides of the respective ejectors 5, 7, 9 permitting the three ejectors 5, 7, 9 to be properly used.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: June 23, 2009
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Tetsuo Uozumi
  • Patent number: 7374001
    Abstract: A fuel cell automobile basically comprises a fuel cell, a cooling system, and a coolant pipe unit. The fuel cell is disposed under a floor panel of a vehicle. The cooling system is configured and arranged to regulate temperature of the fuel cell using a coolant. The cooling system includes at least one cooling system component part that is disposed in a front portion of the vehicle. The coolant pipe unit extends between the fuel cell and the cooling system component part. The coolant pipe unit has a generally horizontal portion disposed in a space under the floor panel and a slope portion extending and sloping continuously upwardly from the horizontal portion to the cooling system component part above the floor panel.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: May 20, 2008
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tetsuo Uozumi, Takeshi Shiomi, Hisashi Nakata
  • Publication number: 20060240298
    Abstract: A fuel cell temperature control apparatus controlling a temperature of a fuel cell (5) disposed in an underfloor portion (3U) of a vehicle (1) is provided with a coolant circuit (11) permitting coolant, by which a fuel cell is cooled, to flow through a heat exchanger (9, 47) disposed in a motor room (7) located at a front portion of a vehicle, a bypass circuit (17) connected to the coolant circuit and permitting the coolant to bypass the heat exchanger, and a coolant pump (19) disposed in the coolant circuit between the fuel cell and the bypass circuit so as to circulate the coolant. The bypass circuit and the coolant pump are mounted in an underfloor portion of the vehicle at a position rearward of the motor room.
    Type: Application
    Filed: August 11, 2004
    Publication date: October 26, 2006
    Inventors: Takahiro Yamada, Tetsuo Uozumi
  • Patent number: 7114586
    Abstract: A vehicle-mounting structure for a fuel cell system of the present invention has a fuel cell, and a hydrogen-related component in which hydrogen to be supplied to the fuel cell flows. In the structure, the fuel cell and the hydrogen-related component are mounted in a space on a front portion in a vehicle body, a hood covering a top opening of the space is inclined downward from a rear side to a front side in the vehicle body, and the hydrogen-related component is placed at a position on the rear side and upper side of the fuel cell in the vehicle body.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: October 3, 2006
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Tetsuo Uozumi
  • Publication number: 20060024542
    Abstract: A fuel cell automobile basically comprises a fuel cell, a cooling system, and a coolant pipe unit. The fuel cell is disposed under a floor panel of a vehicle. The cooling system is configured and arranged to regulate temperature of the fuel cell using a coolant. The cooling system includes at least one cooling system component part that is disposed in a front portion of the vehicle. The coolant pipe unit extends between the fuel cell and the cooling system component part. The coolant pipe unit has a generally horizontal portion disposed in a space under the floor panel and a slope portion extending and sloping continuously upwardly from the horizontal portion to the cooling system component part above the floor panel.
    Type: Application
    Filed: June 7, 2005
    Publication date: February 2, 2006
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Tetsuo Uozumi, Takeshi Shiomi, Hisashi Nakata
  • Publication number: 20060003218
    Abstract: A fuel cell system mounted on a vehicle, including: a fuel cell which is supplied with hydrogen containing gas for generating electric power; a dilution device which dilutes the hydrogen discharged from the fuel cell before discharging the hydrogen to the outside of the system; and a frame member on which at least the fuel cell is mounted to, wherein the dilution device is disposed in a space inside the vehicle in front and outside of the frame member.
    Type: Application
    Filed: July 1, 2005
    Publication date: January 5, 2006
    Inventors: Takeshi Shiomi, Tetsuo Uozumi
  • Publication number: 20050230164
    Abstract: A vehicle-mounting structure for a fuel cell system of the present invention has a fuel cell, and a hydrogen-related component in which hydrogen to be supplied to the fuel cell flows. In the structure, the fuel cell and the hydrogen-related component are mounted in a space on a front portion in a vehicle body, a hood covering a top opening of the space is inclined downward from a rear side to a front side in the vehicle body, and the hydrogen-related component is placed at a position on the rear side and upper side of the fuel cell in the vehicle body.
    Type: Application
    Filed: April 1, 2005
    Publication date: October 20, 2005
    Inventor: Tetsuo Uozumi
  • Publication number: 20050130008
    Abstract: Three ejectors 5, 7, 9 with differences in specification are connected in parallel between a hydrogen storage unit 3 and a fuel cell 1. Respective ejectors 5, 7, 9 allow excess hydrogen, discharged from the fuel cell 1, to pass through a hydrogen recirculating common flow passage 35 and to be recirculated through three recirculation branch flow passages 37, 39, 41. Shut-off mechanisms 13, 15, 19, 21, 25, 27 are disposed at both upstream and downstream sides of the respective ejectors 5, 7, 9, with closing and opening of the shut-off mechanisms located at both the upstream and downstream sides of the respective ejectors 5, 7, 9 permitting the three ejectors 5, 7, 9 to be properly used.
    Type: Application
    Filed: October 9, 2003
    Publication date: June 16, 2005
    Inventor: Tetsuo Uozumi
  • Publication number: 20040262059
    Abstract: A vehicle equipped with a fuel cell system is disclosed including a vehicle body having a floor, and a fuel cell system disposed below the floor and including a fuel cell stack and a water supply device connected to a water storage tank. The water supply device includes component elements (a pump, a water supply conduit and a water recovery conduit) that are disposed below the floor of the vehicle body in a higher area than the water storage tank.
    Type: Application
    Filed: May 26, 2004
    Publication date: December 30, 2004
    Applicant: NISSAN MOTOR CO., LTD.
    Inventor: Tetsuo Uozumi
  • Patent number: 6709779
    Abstract: The efficiency of the fuel cell system is increased. This is enabled by controlling a bypass amount of cooling liquid for a conductivity reduction device such as an ion removal device in response to the operating state of the fuel cell system before the conductivity exceeds the permitted limiting value. The device is provided with a recirculation passage 10 which recirculates cooling liquid between a fuel cell 2 and a heat exchanger 5, a bypass passage 11 having an ion removal filter 4 therein, and a control device 1 which controls solenoids 6, 7 to increase a bypass ratio when the conductivity exceeds the permitted value.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: March 23, 2004
    Assignee: Nissan Motor Co., LTD
    Inventor: Tetsuo Uozumi
  • Patent number: 6479180
    Abstract: In a vehicle fuel cell supporting apparatus and method supporting a fuel cell formed by a plurality of unit cells, each of which is provided with an anode, a cathode, and an electrolyte film, and is laminated together with a separator intervening therebetween in a forward and rearward direction of the vehicle, relative movement, in a forward direction of the vehicle, of the cell element located at the front most position of the fuel cell with respect to the vehicle is blocked.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: November 12, 2002
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Tetsuo Uozumi
  • Publication number: 20020164511
    Abstract: The efficiency of the fuel cell system is increased. This is enabled by controlling a bypass amount of cooling liquid for a conductivity reduction device such as an ion removal device in response to the operating state of the fuel cell system before the conductivity exceeds the permitted limiting value. The device is provided with a recirculation passage 10 which recirculates cooling liquid between a fuel cell 2 and a heat exchanger 5, a bypass passage 11 having an ion removal filter 4 therein, and a control device 1 which controls solenoids 6, 7 to increase a bypass ratio when the conductivity exceeds the permitted value.
    Type: Application
    Filed: April 5, 2002
    Publication date: November 7, 2002
    Applicant: Nissan Motor Co., Ltd.
    Inventor: Tetsuo Uozumi
  • Patent number: 5547173
    Abstract: A fluid-filled cylindrical elastic mount having an inner sleeve and an outer sleeve, and an elastic body interposed therebetween. The elastic mount also has a primary fluid chamber adapted to undergo pressure changes upon application of a vibrational load to the mount, and a first and a second auxiliary fluid chamber partially defined by a first and a second flexible diaphragm, respectively. The second flexible diaphragm has a greater stiffness than the first flexible diaphragm. A non-compressible fluid flows between the primary and first auxiliary fluid chambers, through a first orifice passage tuned to a first frequency range, and a second orifice passage tuned to a second frequency range that is higher than the first frequency range. The fluid also flows between the primary and second auxiliary fluid chambers, through a third orifice passage tuned to a third frequency range that is higher than the second frequency range.
    Type: Grant
    Filed: July 25, 1995
    Date of Patent: August 20, 1996
    Assignees: Tokai Rubber Industries, Ltd., Nissan Motor Company, Ltd.
    Inventors: Joji Tsutsumida, Yasuhiro Suzuki, Tetsuo Uozumi