ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,813, issued on June 24, was assigned to Kerr Machine Co. (Sulphur, Okla.).
"Liquid cooled plunger system" was invented by Micheal Cole Thomas (Azle, Texas), Christopher Todd Barnett (Stratford, Okla.), Kelcy Jake Foster (Sulphur, Okla.), Nicholas Son (Davis, Okla.), John Keith (Ardmore, Okla.), Guy J. Lapointe (Sulphur, Okla.) and Brandon Scott Ayres (Ardmore, Okla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system for cooling plungers which operate in high pressure pumps. The system uses a plunger having a blind bore formed therein. The blind bore may receive a number of different objects, some of which are fixed to the plunger. A heat exchan...