ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,412,684, issued on Sept. 9, was assigned to JIANGSU SHEMAR ELECTRIC Co. LTD. (Jiangsu, China).
"Wall bushing" was invented by Bin Ma (Nantong, China) and Chao Liu (Nantong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wall bushing, comprising a head assembly, a conductive rod, and a connecting terminal sealing and covering the head assembly and the conductive rod. The connecting terminal and the conductive rod are electrically connected. The head assembly includes a transition tank and a transition plate that are connected to each other. An upper end of the transition tank is provided with a first through hole, and a lower end of the transiti...