Patents by Inventor Atsuhisa Mizuta

Atsuhisa Mizuta 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).

  • Hydraulic control device for vehicular friction clutch
    Patent number: 8851261
    Abstract: Providing a hydraulic control device for a friction clutch for a vehicle, which permits the vehicular friction clutch to have an improved response of its releasing action.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: October 7, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaru Morise, Atsuhisa Mizuta, Masanobu Yamada
  • Torsional shock absorbing apparatus
    Patent number: 8562447
    Abstract: A torsional shock absorbing apparatus is constructed to have the outer peripheral portions of first spring seats move along the outer supporting edge portions of the side plate when the hub is twisted with respect to the side plate in the positive rotation side, and to have the outer peripheral portions of second spring seats move along the outer supporting edge portions when the hub is twisted with respect to the side plate in the negative rotation side. The sliding resistance of the first spring seat and the outer supporting edge portions is larger than the sliding resistance of the second spring seat and the outer supporting edge portions.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: October 22, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Atsuhisa Mizuta
  • TORSIONAL SHOCK ABSORBING APPARATUS
    Publication number: 20120244953
    Abstract: A torsional shock absorbing apparatus is constructed to have the outer peripheral portions of first spring seats move along the outer supporting edge portions of the side plate when the hub is twisted with respect to the side plate in the positive rotation side, and to have the outer peripheral portions of second spring seats move along the outer supporting edge portions when the hub is twisted with respect to the side plate in the negative rotation side. The sliding resistance of the first spring seat and the outer supporting edge portions is larger than the sliding resistance of the second spring seat and the outer supporting edge portions.
    Type: Application
    Filed: December 11, 2009
    Publication date: September 27, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Atsuhisa Mizuta
  • HYDRAULIC CONTROL DEVICE FOR VEHICULAR FRICTION CLUTCH
    Publication number: 20120211325
    Abstract: Providing a hydraulic control device for a friction clutch for a vehicle, which permits the vehicular friction clutch to have an improved response of its releasing action.
    Type: Application
    Filed: October 30, 2009
    Publication date: August 23, 2012
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaru Morise, Atsuhisa Mizuta, Masanobu Yamada
  • 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