ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,686, issued on Dec. 30, was assigned to X'POLE PRECISION TOOLS INC. (Taoyuan, Taiwan).
"Electric tool grinding machine" was invented by Bach Pangho Chen (Claremont, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric tool grinding machine has an electric motor, a grip body, a cover connected to the body, an eccentric block in the cover and driven by the motor, and an airflow generating member attaching on the block. The body has at least one air hole having a first distance relative to an axis of the motor, the cover doesn't have a through hole, the airflow generating member has a bottom plate and a plurality of fan blades, a second di...