ALEXANDRIA, Va., April 7 -- United States Patent no. 12,597,791, issued on April 7.
"Battery charger" was invented by Xueling Qin (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to the technical field of battery chargers, providing a battery charger. The charger comprises a lower cover assembly, an upper cover assembly, and a charging module. Space utilization is optimized through a circumferential array battery layout, where the battery negative terminal connects to the electrode plate via a contact spring, and the positive terminal forms a circuit with the circuit board through a metal contact. When the upper cover is closed, the compression spring is compres...