ALEXANDRIA, Va., June 2 -- United States Patent no. 12,644,523, issued on June 2, was assigned to Force Pressure Control LLC (Seguin, Texas).

"Unbalanced pressure activated valve seal assembly" was invented by Jacob Startz (Seguin, Texas), Dustin Nesloney (Orange Grove, Texas) and Jason Beck (Cypress, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention comprises a valve assembly with an unbalanced seal between sealing components of the valve assembly. For a gate valve assembly, an upstream seat may have a different outer diameter than a downstream seat, thereby creating an unbalanced seal with the gate. By increasing the sealing surface of the downstream gate/seat interface and by decr...