US Patent Issued to SHANGHAI YINGLUO ELECTROMECHANICAL TECHNOLOGY on March 3 for "Electric cylinder driving device and walking beam pumping unit including electric cylinder driving device" (Chinese Inventors)

ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,883, issued on March 3, was assigned to SHANGHAI YINGLUO ELECTROMECHANICAL TECHNOLOGY Co. LTD (Shanghai).

"Electric cylinder driving device and walking beam pumping unit including electric cylinder driving device" was invented by Jianxin Xu (Shanghai), Dayong Zeng (Shanghai) and Yong Li (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electric cylinder driving device includes an electric cylinder outer tube, an electric cylinder inner tube, a ball screw, an electric cylinder piston, a ball screw nut and an elastic oil scraping device. The electric cylinder outer tube is sleeved on the electric cylinder inner tube. The ball screw nut is in...