Patents by Inventor Seiji Iguchi

Seiji Iguchi 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).

  • FLUID CONTROL VALVE WITH SENSOR
    Publication number: 20180003317
    Abstract: A fluid control valve includes a valve main body and a vibration sensor. The valve main body has an actuator section and a valve section. The sensor detects vibration generated in the valve main body. The vibration is generated by a water hammer phenomenon. The water hammer phenomenon generates impact when the valve element comes into contact with the valve seat and no fluid leaks between a valve element and a valve seat. The fluid control valve further includes a controller to execute an abnormality determining program and determines the valve main body to be normal when the sensor detects the vibration with an amplitude exceeding the predetermined threshold, while determines the valve main body to be abnormal when the sensor does not detect the vibration with an amplitude exceeding the predetermined threshold.
    Type: Application
    Filed: June 22, 2017
    Publication date: January 4, 2018
    Applicant: CKD CORPORATION
    Inventors: Seiji IGUCHI, Kiyoshi NAGAI
  • Valve mounting plate
    Patent number: D767370
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: September 27, 2016
    Assignee: CKD CORPORATION
    Inventors: Tetsuya Yato, Seiji Iguchi