Patents by Inventor Hidemichi Niwa

Hidemichi Niwa 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