Patents by Inventor Eisuke KONDO

Eisuke KONDO 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 drive device for industrial vehicle
    Patent number: 10954970
    Abstract: A hydraulic drive device for an industrial vehicle includes a tank, a hydraulic pump, a capacity control valve, a plurality of hydraulic cylinders, a plurality of direction switching valves, a first hydraulic oil passage, a second hydraulic oil passages, a pilot line, a relief valve, a relief pressure setting portion, a plurality of operation detecting portions, and a control unit. The control valve controls the hydraulic pumps so that a differential pressure between a discharge pressure of the hydraulic pump and a pilot pressure of the pilot line is to be a predetermined pressure. The control unit controls the relief pressure setting portion.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: March 23, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Eisuke Kondo
  • HYDRAULIC DRIVE DEVICE FOR INDUSTRIAL VEHICLE
    Publication number: 20200208379
    Abstract: A hydraulic drive device for an industrial vehicle includes a tank, a hydraulic pump, a capacity control valve, a plurality of hydraulic cylinders, a plurality of direction switching valves, a first hydraulic oil passage, a second hydraulic oil passages, a pilot line, a relief valve, a relief pressure setting portion, a plurality of operation detecting portions, and a control unit. The control valve controls the hydraulic pumps so that a differential pressure between a discharge pressure of the hydraulic pump and a pilot pressure of the pilot line is to be a predetermined pressure. The control unit controls the relief pressure setting portion.
    Type: Application
    Filed: December 20, 2019
    Publication date: July 2, 2020
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Eisuke KONDO