ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,950, issued on Dec. 30, was assigned to Nabors Drilling Technologies USA Inc. (Houston).

"Dual speed linear actuator assembly" was invented by Christopher Magnuson (Houston), Mark Docherty (Houston), Vladimir Scekic (New Westminster, Canada), Predrag Radovanovic (Belgrade, Serbia) and Dejan Pavlovic (Zeleznik, Serbia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A linear actuator assembly that can include a drive shaft, and a piston, where rotation of the drive shaft extends or retracts the piston at a speed that automatically changes based on an opposing force applied to the piston. A system that can include a piece of rig equipment configured to ...