Patents by Inventor John Trahan

John Trahan 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).

  • Systems and Methods for Rigidizing a Seal
    Publication number: 20260201765
    Abstract: A system includes a seal assembly configured to retain a casing hanger within a wellhead. The seal assembly includes: a main body including at least one tapered surface on an upper end thereof; a lock ring coupled to the main body and configured to expand radially outward into a profile on an inner diameter of the wellhead; and a cam ring disposed above the main body and having at least one tapered surface on a lower end thereof, the at least one tapered surface of the cam ring interfacing with the at least one tapered surface of the main body such that rotation of the cam ring in a first direction with respect to the main body causes the lock ring to move axially upward.
    Type: Application
    Filed: March 11, 2026
    Publication date: July 16, 2026
    Inventors: John Stepchinsky, David A. Scantlebury, Todd L. Scaggs, Gregory K. Norwood, John Trahan, Adam Forness, Andrew B. Mitchell
  • Systems and methods for rigidizing a seal
    Patent number: 12595714
    Abstract: A system includes a seal assembly configured to retain a casing hanger within a wellhead. The seal assembly includes: a main body including at least one tapered surface on an upper end thereof; a lock ring coupled to the main body and configured to expand radially outward into a profile on an inner diameter of the wellhead; and a cam ring disposed above the main body and having at least one tapered surface on a lower end thereof, the at least one tapered surface of the cam ring interfacing with the at least one tapered surface of the main body such that rotation of the cam ring in a first direction with respect to the main body causes the lock ring to move axially upward.
    Type: Grant
    Filed: May 8, 2024
    Date of Patent: April 7, 2026
    Assignee: Innovex International, Inc.
    Inventors: John Stepchinsky, David A. Scantlebury, Todd L. Scaggs, Gregory K. Norwood, John Trahan, Adam Forness, Andrew B. Mitchell
  • Seal assembly with self-adjusting actuator
    Patent number: 12486730
    Abstract: A system includes a seal assembly configured to retain a casing hanger within a wellhead. The seal assembly includes a main body; a lock ring coupled to the main body and configured to expand radially outward into a profile on an inner diameter of the wellhead; and an actuator, wherein the actuator is capable of transferring an axial force from the actuator into outward radial expansion of the lock ring until a tapered portion of the lock ring directly contacts a corresponding tapered portion of the profile, regardless of an initial distance from the lock ring to the profile prior to actuation of the lock ring.
    Type: Grant
    Filed: February 5, 2024
    Date of Patent: December 2, 2025
    Assignee: Innovex International, Inc.
    Inventors: Todd L. Scaggs, John Stepchinsky, John Trahan
  • Systems and Methods for Rigidizing a Seal
    Publication number: 20250347187
    Abstract: A system includes a seal assembly configured to retain a casing hanger within a wellhead. The seal assembly includes: a main body including at least one tapered surface on an upper end thereof; a lock ring coupled to the main body and configured to expand radially outward into a profile on an inner diameter of the wellhead; and a cam ring disposed above the main body and having at least one tapered surface on a lower end thereof, the at least one tapered surface of the cam ring interfacing with the at least one tapered surface of the main body such that rotation of the cam ring in a first direction with respect to the main body causes the lock ring to move axially upward.
    Type: Application
    Filed: May 8, 2024
    Publication date: November 13, 2025
    Inventors: John Stepchinsky, David A. Scantlebury, Todd L. Scaggs, Gregory K. Norwood, John Trahan, Adam Forness, Andrew B. Mitchell
  • Seal Assembly With Self-Adjusting Actuator
    Publication number: 20250250875
    Abstract: A system includes a seal assembly configured to retain a casing hanger within a wellhead. The seal assembly includes a main body; a lock ring coupled to the main body and configured to expand radially outward into a profile on an inner diameter of the wellhead; and an actuator, wherein the actuator is capable of transferring an axial force from the actuator into outward radial expansion of the lock ring until a tapered portion of the lock ring directly contacts a corresponding tapered portion of the profile, regardless of an initial distance from the lock ring to the profile prior to actuation of the lock ring.
    Type: Application
    Filed: February 5, 2024
    Publication date: August 7, 2025
    Inventors: Todd L. Scaggs, John Stepchinsky, John Trahan