ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,395, issued on April 22, was assigned to QINGDAO UNIVERSITY OF TECHNOLOGY (Shandong, China).
"Processing device and working method for film cooling holes on blade of aviation engine" was invented by Fengyun Zhang (Shandong, China), Shufeng Sun (Shandong, China), Qiang Zhang (Shandong, China), Pingping Wang (Shandong, China), Jing Shao (Shandong, China), Dexiang Wang (Shandong, China) and Qingyu Liu (Shandong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A processing device for film cooling holes on blade of aviation engine includes a working box. A workpiece clamping mechanism is arranged in the working box for holding the workpiece. A cover ...