Patents by Inventor Guo Dong Chua

Guo Dong Chua 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).

  • Quick change valve trim assembly
    Patent number: 11187344
    Abstract: A pressure regulator includes a valve body having a fluid inlet and a fluid outlet connected by a fluid passageway. An orifice is disposed between the fluid inlet and the fluid outlet. A valve seat is disposed within the fluid passageway. A movable valve plug is disposed within the fluid passageway, and the valve plug interacts with the valve seat to selectively open or close the fluid passageway. A cage is disposed in the fluid passageway, the cage surrounds the valve plug, and the cage includes a mechanical stop that limits movement of the valve plug within the cage away from the valve seat.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: November 30, 2021
    Assignee: FISHER CONTROLS INTERNATIONAL LLC
    Inventors: Yan Qiu, Guo Dong Chua
  • Quick Change Valve Trim Assembly
    Publication number: 20200278044
    Abstract: A pressure regulator includes a valve body having a fluid inlet and a fluid outlet connected by a fluid passageway. An orifice is disposed between the fluid inlet and the fluid outlet. A valve seat is disposed within the fluid passageway. A movable valve plug is disposed within the fluid passageway, and the valve plug interacts with the valve seat to selectively open or close the fluid passageway. A cage is disposed in the fluid passageway, the cage surrounds the valve plug, and the cage includes a mechanical stop that limits movement of the valve plug within the cage away from the valve seat.
    Type: Application
    Filed: May 19, 2020
    Publication date: September 3, 2020
    Inventors: Yan Qiu, Guo Dong Chua
  • Quick change valve trim assembly
    Patent number: 10655745
    Abstract: A pressure regulator includes a valve body having a fluid inlet and a fluid outlet connected by a fluid passageway. An orifice is disposed between the fluid inlet and the fluid outlet. A valve seat is disposed within the fluid passageway. A movable valve plug is disposed within the fluid passageway, and the valve plug interacts with the valve seat to selectively open or close the fluid passageway. A cage is disposed in the fluid passageway, the cage surrounds the valve plug, and the cage includes a mechanical stop that limits movement of the valve plug within the cage away from the valve seat.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: May 19, 2020
    Assignee: FISHER CONTROLS INTERNATIONAL LLC
    Inventors: Yan Qiu, Guo Dong Chua
  • Quick Change Valve Trim Assembly
    Publication number: 20190285188
    Abstract: A pressure regulator includes a valve body having a fluid inlet and a fluid outlet connected by a fluid passageway. An orifice is disposed between the fluid inlet and the fluid outlet. A valve seat is disposed within the fluid passageway. A movable valve plug is disposed within the fluid passageway, and the valve plug interacts with the valve seat to selectively open or close the fluid passageway. A cage is disposed in the fluid passageway, the cage surrounds the valve plug, and the cage includes a mechanical stop that limits movement of the valve plug within the cage away from the valve seat.
    Type: Application
    Filed: March 15, 2018
    Publication date: September 19, 2019
    Inventors: Yan Qiu, Guo Dong Chua