Patents by Inventor Cenwenda LI

Cenwenda LI 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).

  • Erosion prevention structure for sealing surface of valve
    Patent number: 10563785
    Abstract: An erosion prevention structure for a sealing surface of a valve includes a valve body, a valve seat, a valve core, a valve sleeve and a valve rod. A valve seat mounting hole is provided in the valve body and located between a medium outlet and a cavity; the valve seat is arranged in the valve seat mounting hole; the top surface of the valve seat is provided with an annular table; the outside surface of the annular table is a sealing surface A, wherein an included angle is formed between the sealing surface A and a horizontal surface; an annular flange is arranged at the bottom of the valve core and located at the outer side of the valve core; the inside surface of the annular flange is a sealing surface B, wherein an included angle is formed between the sealing surface B and a horizontal surface.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: February 18, 2020
    Inventors: Cenwenda Li, Wei Li
  • EROSION PREVENTION STRUCTURE FOR SEALING SURFACE OF VALVE
    Publication number: 20190011055
    Abstract: An erosion prevention structure for a sealing surface of a valve includes a valve body, a valve seat, a valve core, a valve sleeve and a valve rod. A valve seat mounting hole is provided in the valve body and located between a medium outlet and a cavity; the valve seat is arranged in the valve seat mounting hole; the top surface of the valve seat is provided with an annular table; the outside surface of the annular table is a sealing surface A, wherein an included angle is formed between the sealing surface A and a horizontal surface; an annular flange is arranged at the bottom of the valve core and located at the outer side of the valve core; the inside surface of the annular flange is a sealing surface B, wherein an included angle is formed between the sealing surface B and a horizontal surface.
    Type: Application
    Filed: November 14, 2016
    Publication date: January 10, 2019
    Inventors: Cenwenda LI, Wei LI