Patents by Inventor Calvin C. Liu

Calvin C. Liu 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).

  • Front loaded seat seal
    Patent number: 11644107
    Abstract: A flow control device includes a valve body, a first port disposed on the valve body, a second port disposed on the valve body, a gate disposed within the valve body and configured to control a flow of a fluid between the first port and the second port, and a seat disposed between the gate and the valve body, the seat including a first surface configured to form a circumferential seal with the valve body and a second surface configured to form a face seal with the gate. A method includes receiving, by a sealing assembly forming a circumferential seal between a seat and a valve body, a first force from a collar disposed on the seat in response to a first movement of a gate, and moving, in response to receiving the first force, the sealing assembly in a first direction of the first force.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: May 9, 2023
    Assignee: FMC Technologies, Inc.
    Inventors: Scott E. Linder, Robert P. Matson, Calvin C. Liu
  • FRONT LOADED SEAT SEAL
    Publication number: 20200124186
    Abstract: A flow control device includes a valve body, a first port disposed on the valve body, a second port disposed on the valve inbody, a gate disposed within the valve body and configured to control a flow of a fluid between the first port and the second port, and a seat disposed between the gate and the valve body, the seat including a first surface configured to form a circumferential seal with the valve body and a second surface configured to form a face seal with the gate. A method includes receiving, by a sealing assembly forming a circumferential seal between a seat and a valve body, a first force from a collar disposed on the seat in response to a first movement of a gate, and moving, in response to receiving the first force, the sealing assembly in a first direction of the first force.
    Type: Application
    Filed: May 20, 2016
    Publication date: April 23, 2020
    Applicants: FMC Technologies, Inc., FMC Technologies, Inc.
    Inventors: Scott E. Linder, Robert P. Matson, Calvin C. Liu