ALEXANDRIA, Va., April 7 -- United States Patent no. 12,597,331, issued on April 7.
"Electrical safety alarm apparatus" was invented by Kyu Bok Lee (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Switchgear equipment (a cubicle) that houses various transformers are installed in a substation room that converts 22.9 KV extra-high voltage to low voltage 380/220V. As electrical safety personnel have to inspect the switchgear equipment on daily, monthly, quarterly, and annual basis, electric shock accidents frequently occur due to exposure to high voltage and high current. To remind workers to work safe, the present invention provides an electrical safety alarm apparatus that, before opening a ...