Patents by Inventor Tsuyoshi KANAZAWA

Tsuyoshi KANAZAWA 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).

  • Patent number: 9708167
    Abstract: An industrial vehicle includes a hydraulic brake device, a hydraulic load handling device, a first hydraulic circuit, a second hydraulic circuit, a pressure compensating circuit, and a controller. The controller sets an electromagnetic valve to a first position during operation of the load handling device. The controller sets the electromagnetic valve to a second position and controls an electric motor to drive a hydraulic pump when determining that pressure needs to be accumulated in a hydraulic accumulator based on a detection result of a detector. When the electromagnetic valve is at the second position, hydraulic pressure generated by driving the hydraulic pump is applied to a pressure compensating valve and produces a force acting in a direction to disconnect the hydraulic pump and an oil tank from each other, so that hydraulic pressure is generated in a first oil passage to be accumulated in the hydraulic accumulator.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: July 18, 2017
    Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, NISHINA INDUSTRIAL CO., LTD.
    Inventors: Junichi Morita, Tetsuya Goto, Tsuyoshi Kanazawa, Yukinori Takeda
  • Publication number: 20170036900
    Abstract: An industrial vehicle includes a hydraulic brake device, a hydraulic load handling device, a first hydraulic circuit, a second hydraulic circuit, a pressure compensating circuit, and a controller. The controller sets an electromagnetic valve to a first position during operation of the load handling device. The controller sets the electromagnetic valve to a second position and controls an electric motor to drive a hydraulic pump when determining that pressure needs to be accumulated in a hydraulic accumulator based on a detection result of a detector. When the electromagnetic valve is at the second position, hydraulic pressure generated by driving the hydraulic pump is applied to a pressure compensating valve and produces a force acting in a direction to disconnect the hydraulic pump and an oil tank from each other, so that hydraulic pressure is generated in a first oil passage to be accumulated in the hydraulic accumulator.
    Type: Application
    Filed: August 1, 2016
    Publication date: February 9, 2017
    Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, NISHINA INDUSTRIAL CO., LTD.
    Inventors: Junichi MORITA, Tetsuya GOTO, Tsuyoshi KANAZAWA, Yukinori TAKEDA