ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,213, issued on June 3, was assigned to Weatherford Technology Holdings LLC (Houston).

"Electronic limit barrier for hydraulic power tongs" was invented by Edinson G. Hernandez (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system includes hydraulic power tongs mounted to a rig floor and including a primary tong and one or more controls for operating the primary tong, an electronic limit barrier device including one or more sensors operable to determine a distance between the hydraulic power tongs and an operator on the rig floor, and a hydraulic control valve in communication with the electronic limit barrier device and fluidly coupled to ...