ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,578, issued on Sept. 9.
"Woodworking grooving planer" was invented by Zhenzhen Tao (Zhongxiang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present application relates to woodworking tools in general and in particular to a woodworking grooving planer. A woodworking grooving planer comprises a planer body, a planer cutter assembly, a planer cutter lifter, an axial locking mechanism and a radial locking mechanism; the grooving planer lift comprises a rotary leadscrew, a lifting slider, a lifting base, a guide rod and a stopper; rotating the rotatory handle can make the lifting slider drive the cutter assembly to move up or down; the axia...