Patents by Inventor Koji SHIOMI

Koji SHIOMI 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).

  • Electromagnetic valve system
    Patent number: 11396954
    Abstract: In a control unit of an electromagnetic valve system, a safety circuit includes a first switch and a second switch for switching, by control from a control circuit supply and shutdown of power from a drive power supply to an electromagnetic valve drive circuit. A common line extends to a plurality of electromagnetic valve units and is connected to one end of a plurality of solenoids. A plurality of power lines are connected to the other end of each of the plurality of solenoids. The electromagnetic valve drive circuit includes a plurality of open/close switches for switching, by control from the control circuit, supply and shutdown of power to the plurality of solenoids.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: July 26, 2022
    Assignee: SMC CORPORATION
    Inventors: Naoki Sakamura, Koji Shiomi
  • ELECTROMAGNETIC VALVE SYSTEM
    Publication number: 20210041035
    Abstract: In a control unit of an electromagnetic valve system, a safety circuit includes a first switch and a second switch for switching, by control from a control circuit supply and shutdown of power from a drive power supply to an electromagnetic valve drive circuit. A common line extends to a plurality of electromagnetic valve units and is connected to one end of a plurality of solenoids. A plurality of power lines are connected to the other end of each of the plurality of solenoids. The electromagnetic valve drive circuit includes a plurality of open/close switches for switching, by control from the control circuit, supply and shutdown of power to the plurality of solenoids.
    Type: Application
    Filed: April 22, 2019
    Publication date: February 11, 2021
    Applicant: SMC CORPORATION
    Inventors: Naoki SAKAMURA, Koji SHIOMI