ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,451,688, issued on Oct. 21, was assigned to SHANGHAI CHENZHU INSTRUMENT Co. LTD. (Shanghai).
"Linkage mechanism, base, and surge protection device" was invented by Keqi Chen (Shanghai) and Zhenhui Liu (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed in the present invention are a linkage mechanism, a base, and a surge protection device. The linkage mechanism comprises a linkage swing rod and transmission components, wherein the linkage swing rod is arranged to be rotatably connected, and is provided with a trigger portion capable of triggering a switch when rotating and at least two stress portions arranged spaced apart from each other...