US Patent Issued to YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES on Feb. 24 for "Valve spring holder, valve box, and plunger pump" (Chinese Inventors)

ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,251, issued on Feb. 24, was assigned to YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES Co. LTD. (Yantai, China).

"Valve spring holder, valve box, and plunger pump" was invented by Xiaosong Wei (Yantai, China), Chen Jiang (Yantai, China), Haiping Cui (Yantai, China), Xiaobin Li (Yantai, China), Wenping Cui (Yantai, China), Peng Li (Yantai, China) and Anpeng Ge (Yantai, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A valve spring holder, a valve box, and a plunger pump. The valve spring holder includes a body part, a first supporting part, a second supporting part, a spring mounting part, and a limiting groove. The first supporting part is con...