Patents by Inventor Masayoshi Ota

Masayoshi Ota 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).

  • VEHICLE HYDRAULIC CLUTCH APPARATUS
    Publication number: 20120186934
    Abstract: A vehicle hydraulic clutch apparatus includes a clutch master cylinder that generates clutch working oil pressure in response to operation of a clutch pedal, and a concentric slave cylinder that engages and releases a friction clutch as the clutch working oil pressure generated by the clutch master cylinder is supplied thereto and discharged therefrom via an oil passageway. A flow restraint device (130, 200) that restrains flow of the working oil from a concentric slave cylinder (66) side to a clutch master cylinder (62) side which occurs according to operation of the clutch pedal (60) is provided in the concentric slave cylinder (66).
    Type: Application
    Filed: August 3, 2010
    Publication date: July 26, 2012
    Inventors: Masayoshi Ota, Atsuhisa Mizuta, Nobuhiko Okano, Takeo Segawa, Junji Kagiyama, Shuji Sadakari, Yuuichi Gotou, Takashi Matsuishi, Hidemichi Niwa, Makoto Koyanagi
  • Internal combustion engine control device
    Patent number: 7934485
    Abstract: A control device for an internal combustion engine which transmits output to a drive-train via a dual mass flywheel, the control device including: an engine rotational state detecting unit that detects a rotational state of the internal combustion engine; a rotational fluctuation inhibiting unit that executes a process of inhibiting rotational fluctuation for the internal combustion engine when a rotational state that is detected by the engine rotational state detecting unit satisfies a rotational fluctuation inhibiting condition; and a rotational fluctuation inhibiting condition adjusting unit that is adjusts the rotational fluctuation inhibiting condition based on a operating state of the internal combustion engine.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: May 3, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masayoshi Ota, Yusuke Saigo, Yoshiyasu Ito
  • Internal combustion engine control device
    Publication number: 20100024768
    Abstract: A control device for an internal combustion engine which transmits output to a drive-train via a dual mass flywheel, the control device including: an engine rotational state detecting unit that detects a rotational state of the internal combustion engine; a rotational fluctuation inhibiting unit that executes a process of inhibiting rotational fluctuation for the internal combustion engine when a rotational state that is detected by the engine rotational state detecting unit satisfies a rotational fluctuation inhibiting condition; and a rotational fluctuation inhibiting condition adjusting unit that is adjusts the rotational fluctuation inhibiting condition based on a operating state of the internal combustion engine.
    Type: Application
    Filed: July 29, 2009
    Publication date: February 4, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masayoshi Ota, Yusuke Saigo, Yoshiyasu Ito