ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,518, issued on July 15, was assigned to D&L Manufacturing Inc. (Tulsa, Okla.).
"Resettable element back-up system" was invented by Heath Bringham (Sand Springs, Okla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A downhole tool of this disclosure includes a set/reset ring located adjacent a gauge ring which is opposite at least one sealing member. The set/reset ring is arranged to move between an unset diameter at least equal to the unset diameter of the sealing member and a set diameter at least equal to the set diameter of the sealing member. The set/reset ring is like a coil spring having at least two full turns and, therefore, a 360deg face su...