US Patent Issued to APEX OILFIELD EQUIPMENT (QINGDAO) on Feb. 3 for "Beam pumping unit and design method for beam pumping unit" (Chinese Inventor)

ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,611, issued on Feb. 3, was assigned to APEX OILFIELD EQUIPMENT (QINGDAO) Co. LTD (Qingdao, China).

"Beam pumping unit and design method for beam pumping unit" was invented by Cong Zhang (Qingdao, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A beam pumping unit includes a bracket; a walking beam arranged above the bracket, wherein a middle part of the walking beam forms a first pivotal connection having a first pivotal center with the bracket, a donkey head is mounted on a front side of the first pivotal center, and a walking beam tail seat is mounted on a rear side of the first pivotal center; a rotating arm arranged behind and below the firs...