Patents by Inventor Mitsuru Ohshiro

Mitsuru Ohshiro 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).

  • Publication number: 20200003191
    Abstract: A variable displacement hydraulic pump or motor (10) includes: a swash plate (13); a lever (22) supported by a housing (21) and configured to rotate in conjunction of tilting of the swash plate (13); and a sensor (23) configured to detect a displacement amount of the lever (22).
    Type: Application
    Filed: June 4, 2018
    Publication date: January 2, 2020
    Inventors: Mutsumi Ono, Mitsuru Ohshiro, Naoya Sodeyama, Jun Nabata, Shuuji Hori
  • Patent number: 10473127
    Abstract: A fan drive system includes a hydraulic pump, a hydraulic motor that rotates a fan on the basis of hydraulic oil supplied from the hydraulic pump, a data acquisition unit that acquires an actual fan speed of the fan, a target amount determination unit that determines a target fan speed of the fan on the basis of a state of an object to be cooled of the fan, and an estimating unit that estimates a state of the hydraulic pump or a state of the hydraulic motor on the basis of a change of a feedback amount that indicates a difference between the target fan speed and the actual fan speed.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: November 12, 2019
    Assignee: Komatsu LTD.
    Inventors: Mitsuru Ohshiro, Kenichi Ogasawara, Masahiro Hirano
  • Publication number: 20190093684
    Abstract: A fan drive system includes a hydraulic pump, a hydraulic motor that rotates a fan on the basis of hydraulic oil supplied from the hydraulic pump, a data acquisition unit that acquires an actual fan speed of the fan, a target amount determination unit that determines a target fan speed of the fan on the basis of a state of an object to be cooled of the fan, and an estimating unit that estimates a state of the hydraulic pump or a state of the hydraulic motor on the basis of a change of a feedback amount that indicates a difference between the target fan speed and the actual fan speed.
    Type: Application
    Filed: January 12, 2017
    Publication date: March 28, 2019
    Inventors: Mitsuru Ohshiro, Kenichi Ogasawara, Masahiro Hirano
  • Patent number: 9410540
    Abstract: In a variable displacement hydraulic pump/motor, a casing includes a tapered roller bearing supporting a rotating shaft near supports, the support has a sliding protruding portion in a spherical shape at a shaft portion, and a through oil path extending from the shaft portion to the sliding protruding portion, the support being fitted, at the shaft portion, in a mounting hole in the casing and being fitted, at the sliding protruding portion, in a sliding recessed portion in the swash plate to cover an opening of the through oil path, a communicating oil path is between a space in which a tapered roller of the tapered roller bearing is disposed and the mounting hole, and a lubrication groove constantly connecting the opening of the through oil path to an outside of a sliding contact area between the sliding protruding portion and the sliding recessed portion.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: August 9, 2016
    Assignee: Komatsu Ltd.
    Inventors: Norihide Mizoguchi, Mitsuru Ohshiro, Takahiro Adachi
  • Publication number: 20140186196
    Abstract: In a variable displacement hydraulic pump/motor, a casing includes a tapered roller bearing supporting a rotating shaft near supports, the support has a sliding protruding portion in a spherical shape at a shaft portion, and a through oil path extending from the shaft portion to the sliding protruding portion, the support being fitted, at the shaft portion, in a mounting hole in the casing and being fitted, at the sliding protruding portion, in a sliding recessed portion in the swash plate to cover an opening of the through oil path, a communicating oil path is between a space in which a tapered roller of the tapered roller bearing is disposed and the mounting hole, and a lubrication groove constantly connecting the opening of the through oil path to an outside of a sliding contact area between the sliding protruding portion and the sliding recessed portion is between the sliding protruding portion and the sliding recessed portion.
    Type: Application
    Filed: November 17, 2011
    Publication date: July 3, 2014
    Applicant: KOMATSU LTD.
    Inventors: Norihide Mizoguchi, Mitsuru Ohshiro, Takahiro Adachi