Patents by Inventor Ryutaro Fukumoto

Ryutaro Fukumoto 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: 5186134
    Abstract: A spiral spring type starter apparatus for an internal combustion engine is disclosed. The apparatus includes a power accumulator mechanism having a spiral spring with its one end fixed to a starter shaft and its other end fixed to a power accumulator box, a ratchet device provided respectively on the starter shaft side and on the power accumulator box side of the power accumulator mechanism for maintaining a power accumulated condition in the spiral spring and also for enabling power to be input to the power accumulator box and power to be output from the starter shaft, a centrifugal type ratchet mechanism interposed between the starter shaft and a crank shaft of the engine, a motor adapted to be fed with electric power from a generator through a control circuit after starting of the engine, and a power transmission device for transmitting output power from the motor to the power accumulator box. The motor and battery can be reduced in size.
    Type: Grant
    Filed: September 17, 1991
    Date of Patent: February 16, 1993
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Ryuji Morishima, Katsutoshi Asai, Ryutaro Fukumoto, Kanji Isomichi
  • Patent number: 5163392
    Abstract: A spiral spring type starter apparatus for an internal combustion engine is disclosed. The apparatus includes a power accumulator mechanism having a spiral spring with its one end fixed to a starter shaft and its other end fixed to a power accumulator box, a ratchet device provided respectively on the starter shaft side and on the power accumulator box side of the power accumulator mechanism for maintaining a power accumulated condition in the spiral spring and also for enabling power to be input to the power accumulator box and power to be output from the starter shaft, a centrifugal type ratchet mechanism interposed between the starter shaft and a crank shaft of the engine, a motor adapted to be fed with electric power from a generator through a control circuit after starting of the engine, and a power transmission device for transmitting output power from the motor to the power accumulator box. The motor and battery can be reduced in size.
    Type: Grant
    Filed: April 9, 1991
    Date of Patent: November 17, 1992
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Ryuji Morishima, Katsutoshi Asai, Ryutaro Fukumoto, Kanji Isomichi
  • Patent number: 5083534
    Abstract: A spiral spring type starter apparatus for an internal combustion engine is disclosed. The apparatus includes a power accumulator mechanism having a spiral spring with its one end fixed to a starter shaft and its other end fixed to a power accumulator box, a ratchet device provided respectively on the starter shaft side and on the power accumulator box side of the power accumulator mechanism for maintaining a power accumulated condition in the spiral spring and also for enabling power to be input to the power accumulator box and power to be output from the starter shaft, a centrifugal type ratchet mechanism interposed between the starter shaft and a crank shaft of the engine, a motor adapted to be fed with electric power from a generator through a control circuit after starting of the engine, and a power transmission device for transmitting output power from the motor to the power accumulator box. The motor and battery can be reduced in size.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: January 28, 1992
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Ryuji Morishima, Katsutoshi Asai, Ryutaro Fukumoto, Kanji Isomichi
  • Patent number: 4580620
    Abstract: In an air conditioner, the control of the airflow rate is effected by utilizing both the temperature deviation between the room temperature and a set temperature and an air-mix damper position as a proportional control factor with the airflow rate compensation being based on an incremental integer control factor which has been derived from the temperature deviation.
    Type: Grant
    Filed: April 30, 1985
    Date of Patent: April 8, 1986
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Ryutaro Fukumoto, Yukio Yoshida, Ryosaku Akimoto
  • Patent number: 4540040
    Abstract: An air cooling temperature control system for use in vehicles including a cooler having a compressor, a heater having an air-mix damper and a room air temperature regulator, in which feedback control is effected so that a room air temperature may coincide with a preset temperature value. The output of the heater is regulated to respond to sudden changes in the room air temperature by controlling the opening of the air-mix damper. The duty cycle of the compressor is regulated by a controller so as to respond to gradual changes in room air temperature while the output of the heater is at a low level and to incrementally decrease the duty cycle of the compressor when the output of the heater is above the low level, thereby driving the output of the heater down so as to minimize the counteracting effects of concurrent heating and cooling, so that the desired room air temperature is maintained with minimal energy.
    Type: Grant
    Filed: December 2, 1982
    Date of Patent: September 10, 1985
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Ryutaro Fukumoto, Shuji Oyagi, Yukio Yoshida, Ryosaku Akimoto
  • Patent number: 4485863
    Abstract: A control device is used in a car-mounted air-conditioner of the air mixing type, in which a portion of the cold air, obtained by passing air through an evaporator, is heated by a heater via an air mixing damper. The control device includes a pulse generator, which is supplied with the outputs of a temperature setting device and of a room temperature sensor both of which are provided in a car in which the air-conditioner is mounted. The control device provides an amplified multi-phase pulse signal, based on deviations of the outputs, to an intermittent driving device responsive for rotating the air mixing damper.
    Type: Grant
    Filed: December 2, 1981
    Date of Patent: December 4, 1984
    Assignees: Mitsubishi Jukogyo Kabushiki Kaisha, Churyo Engineering Co., Ltd.
    Inventors: Yukio Yoshida, Akira Tanaka, Ryutaro Fukumoto, Ryosaku Akimoto, Shigetoshi Tanaka, Nobuaki Ito