ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,850, issued on March 25, was assigned to Kerr Machine Co. (Sulphur, Okla.).
"Fluid end" was invented by Kelcy Jake Foster (Sulphur, Okla.), Micheal Cole Thomas (Azle, Texas), Christopher Todd Barnett (Stratford, 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 made of a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section comprises a plurality of individual components joined together in a row. Two sets of fasteners are used to secure various components of each fluid end section together. When the fluid end section is as...