Patents by Inventor RongXian Qi

RongXian Qi 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).

  • VALVE PLUGS INCLUDING HARDENED TIPS
    Publication number: 20230304585
    Abstract: Valve plugs including hardened tips are disclosed herein. An example apparatus disclosed herein includes a plug holder, a sleeve coupled to the plug holder, the sleeve including a lip, a valve plug tip retained by the lip, and a spacer disposed between the plug holder and the tip, the sleeve surrounding the spacer.
    Type: Application
    Filed: August 19, 2022
    Publication date: September 28, 2023
    Inventors: Cory Hagen, Bin Wang, Rongxian Qi, Bing Yu
  • Mechanical fastening method for valve plug with carbide tip
    Patent number: 10948088
    Abstract: A valve plug assembly includes a plug base, a first end of the base arranged for attachment to a valve stem, a second end of the plug base including a bore having a first portion and a second portion. The second portion of the bore is a conical terminus forming a first seat. A spacer has a through bore, a first end, and a second end, and is sized for insertion in the bore of the plug base and has a conical shape to engage the first seat, and the spacer also forms a second seat. A plug tip has a through bore and a conical end engaging the second seat and is arranged to engage the valve seat, and a cap screw extends through the plug tip and the spacer to mechanically secure the plug tip to the plug base.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: March 16, 2021
    Assignee: EMERSON PROCESS MANAGEMENT (TIANJIN) VALVES CO., LTD.
    Inventors: Wang Bin, Timothy R. Parrie, Michel K. Lovell, RongXian Qi
  • Mechanical Fastening Method for Valve Plug with Carbide Tip
    Publication number: 20190063616
    Abstract: A valve plug assembly includes a plug base, a first end of the base arranged for attachment to a valve stem, a second end of the plug base including a bore having a first portion and a second portion. The second portion of the bore is a conical terminus forming a first seat. A spacer has a through bore, a first end, and a second end, and is sized for insertion in the bore of the plug base and has a conical shape to engage the first seat, and the spacer also forms a second seat. A plug tip has a through bore and a conical end engaging the second seat and is arranged to engage the valve seat, and a cap screw extends through the plug tip and the spacer to mechanically secure the plug tip to the plug base.
    Type: Application
    Filed: August 31, 2018
    Publication date: February 28, 2019
    Applicant: EMERSON PROCESS MANAGEMENT (TIANJIN) VALVES CO., LTD.
    Inventors: Wang Bin, Timothy R. Parrie, Michel K. Lovell, RongXian Qi