ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,731,936, issued on Sept. 8, was assigned to Schneider Electric Industries SAS (Rueil-Malmaison, France).

"Sliding shutter for socket capable of preventing an erroneous insertion" was invented by Qianggong Zhang (Shenzhen, China) and Qilong Chen (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A shutter for a socket and a socket. The shutter comprises a base comprising a first positioning member extending upwardly from a bottom surface within the base; a first slider comprising: a first slider body; a support shaft movably and rotatably coupling the first slider body to the base; a first guide surface and a second guide surface respectivel...