Patents by Inventor Hisaji Okamoto

Hisaji Okamoto 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).

  • Ignition system for internal combustion engines
    Patent number: 4177776
    Abstract: An ignition system for a spark-ignition type internal combustion engine comprising an ignition device capable of performing the spark timing control function, wherein in order to improve the engine torque, a temperature detecting element for detecting the temperature having an effect on the engine torque efficiency is provided in addition to the ignition device, so that the ignition device is actuated to advance the timing of the spark at a lower temperature as compared with that employed at a higher temperature in accordance with the temperature detected by the temperature detecting element.
    Type: Grant
    Filed: October 5, 1977
    Date of Patent: December 11, 1979
    Assignees: Toyota Jidosha Kogyo Kabushiki Kaisha, Nippondenso Kabushiki Kaisha
    Inventors: Noriaki Kawai, Hisaji Okamoto, Yosiaki Takeda, Fukuzi Sano, Akio Kakiuchi, Masami Manabe, Takashi Nomura, Sigeya Abe
  • Ignition system for internal combustion engines
    Patent number: 4068633
    Abstract: An ignition system for a spark-ignition type internal combustion engine comprising an ignition device capable of performing the spark timing control function, wherein in order to improve the engine torque, a temperature detecting element for detecting the temperature having an effect on the engine torque efficiency is provided in addition to the ingition device, so that the ignition device is actuated to advance the timing of the spark at a lower temperature as compared with that employed at a higher temperature in accordance with the temperature detected by the temperature detecting element.
    Type: Grant
    Filed: November 25, 1975
    Date of Patent: January 17, 1978
    Assignees: Toyota Jidosha Kogyo Kabushiki Kaisha, Nippondenso Kabushiki Kaisha
    Inventors: Noriaki Kawai, Hisaji Okamoto, Yosiaki Takeda, Fukuzi Sano, Akio Kakiuchi, Masami Manabe, Takashi Nomura, Sigeya Abe
  • Ignition system for internal combustion engines
    Patent number: 4005688
    Abstract: An ignition system for a spark-ignition type internal combustion engine comprising an ignition device capable of performing the spark timing control function, wherein in order to improve the engine torque, a temperature detecting element for detecting the temperature having an effect on the engine torque efficiency is provided in addition to the ignition device, so that the ignition device is actuated to advance the timing of the spark at a lower temperature as compared with that employed at a higher temperature in accordance with the temperature detected by the temperature detecting element.
    Type: Grant
    Filed: July 25, 1975
    Date of Patent: February 1, 1977
    Assignees: Toyota Jidosha Kogyo Kabushiki Kaisha, Nippondenso Kabushiki Kaisha
    Inventors: Noriaki Kawai, Hisaji Okamoto, Yosiaki Takeda, Fukuzi Sano, Akio Kakiuchi, Masami Manabe, Takashi Nomura, Sigeya Abe
  • Ignition system for internal combustion engines
    Patent number: 3930474
    Abstract: An ignition system for a spark-ignition type internal combustion engine comprising an ignition device capable of performing the spark timing control function, wherein in order to improve the engine torque, a temperature detecting element for detecting the temperature having an effect on the engine torque efficiency is provided in addition to the ingition device, so that the ignition device is actuated to advance the timing of the spark at a lower temperature as compared with that employed at a higher temperature in accordance with the temperature detected by the temperature detecting element.
    Type: Grant
    Filed: August 9, 1973
    Date of Patent: January 6, 1976
    Assignees: Toyota Jidosha Kogyo Kabushiki Kaisha, Nippondenso Kabushiki Kaisha
    Inventors: Noriaki Kawai, Hisaji Okamoto, Yosiaki Takeda, Fukuzi Sano, Akio Kakiuchi, Masami Manabe, Takashi Nomura, Sigeya Abe