ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,512,556, issued on Dec. 30, was assigned to POWER ON TOOLS Co. LTD (Xiamen, China).
"Flame-proof portable power supply" was invented by Xun Chen (Xiamen, China), Zhangxun Weng (Xiamen, China), Xia Li (Xiamen, China) and Yubing Zhu (Xiamen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A flame-proof portable power supply includes a battery pack, an electrical assembly, a metal housing and an aerosol fire extinguishing device. A holding cavity for installing the battery pack or the electrical assembly are formed in the metal housing, the battery pack is electrically connected to the electrical assembly, and the battery pack is directly connected to...