US Patent Issued to SOUTHWEST PETROLEUM UNIVERSITY, CHENGDU WEIYI PETROLEUM TECHNOLOGY on Feb. 17 for "PDC drill bit with swing self-adaptive cushion structure" (Chinese Inventors)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,293, issued on Feb. 17, was assigned to SOUTHWEST PETROLEUM UNIVERSITY (Sichuan, China) and CHENGDU WEIYI PETROLEUM TECHNOLOGY Co. LTD (Sichuan, China).

"PDC drill bit with swing self-adaptive cushion structure" was invented by Yingxin Yang (Sichuan, China), Deng Zhang (Sichuan, China), Chunliang Zhang (Sichuan, China), Haitao Ren (Sichuan, China), Shiwei Niu (Sichuan, China) and Yang Li (Sichuan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A PDC drill bit has a drill bit body and a blade. The blade is provided with cutting teeth. At least one cushion structure is rotatably connected to the drill bit body. The cushion structure makes contac...