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).
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Patent number: 11260761Abstract: 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: GrantFiled: August 14, 2017Date of Patent: March 1, 2022Assignee: NISSAN MOTOR CO., LTD.Inventors: Koichi Tanaka, Tetsuo Uozumi, Tomoyuki Hanada, Shinichi Akiba
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Publication number: 20200369166Abstract: 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: ApplicationFiled: August 14, 2017Publication date: November 26, 2020Applicant: NISSAN MOTOR CO., LTD.Inventors: Koichi TANAKA, Tetsuo UOZUMI, Tomoyuki HANADA, Shinichi AKIBA
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Publication number: 20180138526Abstract: 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: ApplicationFiled: April 28, 2015Publication date: May 17, 2018Applicant: NISSAN MOTOR CO., LTD.Inventor: Tetsuo UOZUMI
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Patent number: 7682715Abstract: 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: GrantFiled: May 26, 2004Date of Patent: March 23, 2010Assignee: Nissan Motor Co., Ltd.Inventor: Tetsuo Uozumi
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Patent number: 7550219Abstract: 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: GrantFiled: October 9, 2003Date of Patent: June 23, 2009Assignee: Nissan Motor Co., Ltd.Inventor: Tetsuo Uozumi
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Patent number: 7374001Abstract: 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: GrantFiled: June 7, 2005Date of Patent: May 20, 2008Assignee: Nissan Motor Co., Ltd.Inventors: Tetsuo Uozumi, Takeshi Shiomi, Hisashi Nakata
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Publication number: 20060240298Abstract: 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: ApplicationFiled: August 11, 2004Publication date: October 26, 2006Inventors: Takahiro Yamada, Tetsuo Uozumi
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Patent number: 7114586Abstract: 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: GrantFiled: April 1, 2005Date of Patent: October 3, 2006Assignee: Nissan Motor Co., Ltd.Inventor: Tetsuo Uozumi
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Publication number: 20060024542Abstract: 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: ApplicationFiled: June 7, 2005Publication date: February 2, 2006Applicant: Nissan Motor Co., Ltd.Inventors: Tetsuo Uozumi, Takeshi Shiomi, Hisashi Nakata
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Publication number: 20060003218Abstract: 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: ApplicationFiled: July 1, 2005Publication date: January 5, 2006Inventors: Takeshi Shiomi, Tetsuo Uozumi
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Publication number: 20050230164Abstract: 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: ApplicationFiled: April 1, 2005Publication date: October 20, 2005Inventor: Tetsuo Uozumi
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Publication number: 20050130008Abstract: 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: ApplicationFiled: October 9, 2003Publication date: June 16, 2005Inventor: Tetsuo Uozumi
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Publication number: 20040262059Abstract: 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: ApplicationFiled: May 26, 2004Publication date: December 30, 2004Applicant: NISSAN MOTOR CO., LTD.Inventor: Tetsuo Uozumi
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Patent number: 6709779Abstract: 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: GrantFiled: April 5, 2002Date of Patent: March 23, 2004Assignee: Nissan Motor Co., LTDInventor: Tetsuo Uozumi
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Patent number: 6479180Abstract: 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: GrantFiled: July 12, 2000Date of Patent: November 12, 2002Assignee: Nissan Motor Co., Ltd.Inventor: Tetsuo Uozumi
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Publication number: 20020164511Abstract: 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: ApplicationFiled: April 5, 2002Publication date: November 7, 2002Applicant: Nissan Motor Co., Ltd.Inventor: Tetsuo Uozumi
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Patent number: 5547173Abstract: 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: GrantFiled: July 25, 1995Date of Patent: August 20, 1996Assignees: Tokai Rubber Industries, Ltd., Nissan Motor Company, Ltd.Inventors: Joji Tsutsumida, Yasuhiro Suzuki, Tetsuo Uozumi