Patents by Inventor Takashi Fukunaga

Takashi Fukunaga 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: 20030155160
    Abstract: There is provided a vehicle system, including an electromobile having a fuel cell power generator mounted therein, and a predetermined mobile unit jointable to the electromobile, such that cogeneration within the mobile unit can be realized even during the travel of the electromobile. Via a joint section 30, a vehicle 10 including a fuel cell 13 as a source of motive power is jointed to a mobile unit 20 capable of travelling and at least including a storage battery 23 and a water tank 25. The water produced in the fuel cell 13 is recovered by a water recovery section 21 via the joint section 30. The heat produced in the fuel cell 13 is recovered by a heat recovery section 22 via the joint section 30. The recovered water is warmed up with the recovered heat, and thereafter stored in the water tank 25. The hot water stored in the water tank 25 is utilized as hot water to be used for controlling the temperature of the mobile unit 20 or supplied as hot water.
    Type: Application
    Filed: February 20, 2003
    Publication date: August 21, 2003
    Inventors: Noboru Nomura, Takashi Fukunaga, Jiro Suzuki
  • Patent number: 6125451
    Abstract: A clock frequency converter circuit 30 is provided in a first IC 21 within a semiconductor chip kit SCK. Input clock signals CK1 different in clock frequency introduced from a clock generator 10 are converted into an output clock signal CK2 with a predetermined specific clock frequency in the clock frequency converter circuit 30, and the output clock signal CK2 is used as an activating clock signal of the fist IC 21, second IC 22 and third IC 23. Thus, the semiconductor chip kit can easily cope with changes in clock frequency of the input clock signal CK1.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: September 26, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Takashi Fukunaga
  • Patent number: 6041754
    Abstract: An idle intake control device provided with a backflow preventing means for preventing a backflow near an idle intake regulating valve and producing only a forward flow in order to prevent idle intake air containing combustion products from flowing back and being adhered to an idle intake regulating valve in an idle intake passageway for bypassing an intake regulating valve provided in an intake passageway of the engine.
    Type: Grant
    Filed: April 14, 1998
    Date of Patent: March 28, 2000
    Assignees: Nippon Soken, Inc., Toyota Jidoshi Kabushiki Kaisha
    Inventors: Katsuyuki Mori, Kiyohiko Watanabe, Yasuyuki Kawabe, Koichi Gomi, Takashi Fukunaga, Tadashi Akiyama
  • Patent number: 5642281
    Abstract: A steering angle control apparatus for controlling steering angles of front wheels and rear wheels of a vehicle includes a yaw rate detector for detecting an actual yaw rate of the vehicle. A desired yaw rate calculator estimates a desired yaw rate for causing the vehicle to drive stably. A yaw rate disturbance calculator calculates a yaw rate disturbance which causes the detected yaw rate to deviate from an ideal yaw rate of the vehicle assuming driving in ideal driving conditions. A desired yaw rate compensator compensates the desired yaw rate based on the calculated yaw rate disturbance and produces a compensated yaw rate so that the desired yaw rate tracks the compensated yaw rate.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: June 24, 1997
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akira Ishida, Takashi Fukunaga, Akiyoshi Segawa
  • Patent number: 5524079
    Abstract: A control system robust with respect to a vehicle dynamic characteristic variation by a vehicle speed change by estimating an unknown characteristic term in a target yaw rate following system so as to reduce a side slip angle at a transmission time, wherein right and left rear wheels are directly steered using an electric motor controller, and an instruction signal to the motor controller is calculated with a simple calculation using a vehicle speed characteristic estimator with a control amount calculator so that a real yaw rate may follow a target yaw rate calculated by a target yaw rate calculator using respective sensor output values of a vehicle speed sensor, a yaw rate sensor, a steering wheel angle sensor, and a rear wheel steering sensor for each control period.
    Type: Grant
    Filed: August 27, 1993
    Date of Patent: June 4, 1996
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akira Ishida, Takashi Fukunaga, Akiyoshi Segawa
  • Patent number: 5502639
    Abstract: A steering angle of rear wheels of a four-wheel steering vehicle is controlled so that a quick response of an electric motor mounted in the rear wheels is achieved only when it is necessary, thereby avoiding wasteful consumption of power. In addition, a yaw rate feedback system is kept stable. When unstable vibration of the electric motor is detected, a gain to the yaw rate is adjusted.
    Type: Grant
    Filed: February 22, 1995
    Date of Patent: March 26, 1996
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takashi Fukunaga, Akiyoshi Segawa
  • Patent number: 5473861
    Abstract: The present invention relates to a packing method and an apparatus, wherein a substance to be packed is carried from a carrying-in section in which the substance is carried to a position under a packing section where a film stands by in a horizontally stretched state. The substance to be packed is lifted to the film and is covered on the upper surface with the film, and the end portions of the film are folded under the bottom portion of the substance to be packed. The packing method and packing apparatus are for a no-tray system for directly packing a substance to be packed without a tray.
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: December 12, 1995
    Assignee: Teraoka Seiko Co., Ltd.
    Inventors: Takashi Fukunaga, Shiro Seyasu, Takeomi Yasuda
  • Patent number: 5274555
    Abstract: A steering angle of rear wheels of a four-wheel steering vehicle is controlled so that a quick response of an electric motor mounted in the rear wheels is achieved only when it is necessary, thereby avoiding wasteful consumption of power. In addition, a yaw rate feedback system is kept stable. When unstable vibration of the electric motor is detected, a gain to the yaw rate is adjusted.
    Type: Grant
    Filed: August 9, 1991
    Date of Patent: December 28, 1993
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takashi Fukunaga, Akiyoshi Segawa