ALEXANDRIA, Va., July 23 -- United States Patent no. 12,365,077, issued on July 22, was assigned to Nanjing Chervon Industry Co. Ltd. (Nanjing, China).
"Electric drill and electric tool" was invented by Hanqing Zheng (Nanjing, China), Chunrui Li (Nanjing, China) and Rui Zhan (Nanjing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric drill and an electric tool, including: a housing provided with an air inlet and an air outlet; a motor received in the housing, wherein the motor at least comprises a motor shaft; a drill bit, acting on a workpiece; the motor shaft is connected to the drill bit; a gearbox arranged in the housing for accommodating the transmission assembly; a fan supported by the m...