Patents by Inventor Yasushi Sotani

Yasushi Sotani 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: 9217446
    Abstract: A hydraulic controller includes: an accumulator connected to a main oil passage; a pressure storage use oil passage which branches off from the main oil passage and leads to the accumulator; an inlet port; a priority port; and a bypass port. The hydraulic controller includes a priority valve configured such that, at the time of storing pressure in the accumulator, of pressure oil that flows into the inlet port, the pressure oil at a flow rate for storing of pressure in the accumulator, which is a preset flow rate, flows out of the priority port, and the pressure oil at a surplus flow rate, which is a flow rate obtained by subtracting the flow rate for storing of pressure from the flow rate of the pressure oil flowing into the input port, flows out of the bypass port.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: December 22, 2015
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Shuhei Ohtsuka, Takaaki Kunishiro, Tomohisa Yoshimura, Yasushi Sotani
  • Publication number: 20120240566
    Abstract: A hydraulic controller includes: an accumulator connected to a main oil passage; a pressure storage use oil passage which branches off from the main oil passage and leads to the accumulator; an inlet port; a priority port; and a bypass port. The hydraulic controller includes a priority valve configured such that, at the time of storing pressure in the accumulator, of pressure oil that flows into the inlet port, the pressure oil at a flow rate for storing of pressure in the accumulator, which is a preset flow rate, flows out of the priority port, and the pressure oil at a surplus flow rate, which is a flow rate obtained by subtracting the flow rate for storing of pressure from the flow rate of the pressure oil flowing into the input port, flows out of the bypass port.
    Type: Application
    Filed: July 6, 2010
    Publication date: September 27, 2012
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Shuhei Ohtsuka, Takaaki Kunishiro, Tomohisa Yoshimura, Yasushi Sotani
  • Patent number: 5040639
    Abstract: An elevator valve apparatus for controlling the hydraulic supply flow to the hydraulic actuator and the hydraulic discharge flow from the actuator, comprises a solenoid proportional control valve device for ascending, a solenoid proportional control valve device for descending, and a valve control unit for controlling both of the control valve devices with a predetermined acceleration characteristic and a predetermined deceleration characteristic by an open loop control system.Furthermore, if preferable, the valve control unit carries out oil temperature compensating control, pressure compensating control, pre-start pressure raising compensation control, and feedback control of the supply flow in the low speed ascending.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: August 20, 1991
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Shinya Watanabe, Hironori Sasaki, Kaoru Nomichi, Yasushi Sotani