ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,628, issued on May 20, was assigned to Kerr Machine Co. (Sulphur, Okla.).
"Packing seal assembly" was invented by Christopher Todd Barnett (Stratford, Okla.), Micheal Cole Thomas (Ardmore, Okla.), Kelcy Jake Foster (Sulphur, Okla.), Nicholas Son (Davis, Okla.) and John Keith (Ardmore, Okla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fluid end assembly comprising a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section comprises a housing having a bore formed therein for housing a reciprocating plunger. Fluid is prevented from leaking around the plunger by a packing seal assembly. The packing seal asse...