ALEXANDRIA, Va., June 17 -- United States Patent no. 12,316,261, issued on May 27, was assigned to Nanjing Chervon Industry Co. Ltd. (Nanjing, China).
"Power tool and control method therefor" was invented by Jifeng Feng (Nanjing, China), Xiancheng Fan (Nanjing, China) and Zengbing Guo (Nanjing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power tool includes an electric motor; a battery pack for providing a power supply; a switching circuit for outputting a power-on signal or a shutdown signal; a first switching device for controlling a power-on state of the electric motor; a second switching device for driving the electric motor to rotate; and a controller electrically connected to at least the fi...