Patents by Inventor Yuuji Hirabayashi

Yuuji Hirabayashi 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).

  • Electronic ignition control apparatus
    Patent number: 4499544
    Abstract: In an electronic ignition control apparatus having RAM to initially store first and second signals indicative of the starting and terminating points for calculation of a time necessary for rotation of a predetermined angle defined by integer times as large as a predetermined angular interval of an output shaft of an engine, a rotation time of the output shaft is calculated during rotation of an angle of the output shaft defined by the first and second signals from RAM to calculate an optimum spark advance angle in relation to the operating condition of the engine such that an angular position defined by integer times as large as the predetermined angular interval at the advance angle side of the calculated advance angle is determined to be stored in RAM as a third signal.
    Type: Grant
    Filed: August 25, 1982
    Date of Patent: February 12, 1985
    Assignee: Nippondenso Co., Ltd.
    Inventors: Masahiro Ohba, Kenzo Ito, Susumu Akiyama, Yuuji Hirabayashi, Satoshi Hirano, Naoto Ooka
  • Electronic ignition control apparatus
    Patent number: 4360874
    Abstract: In an electronic ignition control apparatus having RAM to initially store first and second signals indicative of the starting and terminating points for calculation of a time necessary for rotation of a predetermined angle defined by integer times as large as a predetermined angular interval of an output shaft of an engine, a rotation time of the output shaft is calculated during rotation of an angle of the output shaft defined by the first and second signals from RAM to calculate an optimum spark advance angle in relation to the operating condition of the engine such that an angular position defined by integer times as large as the predetermined angular interval at the advance angle side of the calculated advance angle is determined to be stored in RAM as a third signal.
    Type: Grant
    Filed: October 21, 1980
    Date of Patent: November 23, 1982
    Assignee: Nippondenso Co., Ltd.
    Inventors: Masahiro Ohba, Kenzo Ito, Susumu Akiyama, Yuuji Hirabayashi, Satoshi Hirano, Naoto Ooka