ALEXANDRIA, Va., May 26 -- United States Patent no. 12,638,013, issued on May 26, was assigned to SHANGHAI NIKUNI FLUID SYSTEM Co. LTD. (Shanghai).
"Hydraulic linkage plunger pushing mechanism and plunger diaphragm pump using same" was invented by Xinlin Wu (Shanghai) and Fengwei Liu (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydraulic linkage plunger pushing mechanism for a plunger diaphragm pump body with a low-pressure liquid chamber and a plunger, includes: a bearing component; and a crankshaft disposed in the low-pressure liquid chamber in the plunger diaphragm pump body through the bearing component, the crankshaft comprising an eccentric part, and the eccentric part of the crankshaft s...