ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,436,060, issued on Oct. 7, was assigned to HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY (Xiangtan, China).
"Testing device for simulating frictional wear behaviors of threaded joint of drill pipe under turbid seafloor environment" was invented by Yongping Jin (Xiangtan, China), Chang Wu (Xiangtan, China) and Deshun Liu (Xiangtan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A testing device for simulating frictional wear behaviors of threaded joints of a drill pipe under turbid seafloor environment, including a support, an oil cylinder, upper and lower specimens, a first motor, several second motors, stirring rods, a turbidity sensor, and a test ta...