ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,533,822, issued on Jan. 27, was assigned to Andis Co. (Sturtevant, Wis.).
"Hair clipper with linear actuator" was invented by Richard J. Tringali (Racine, Wis.) and Jeffrey D. Gross (Kenosha, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A linear actuator or motor for oscillating a blade is provided. The linear actuator replaces an eccentric drive and yoke, resulting in a linear powered drive to oscillate the blade linearly. This operation facilitates the formation of a smaller and/or lighter hair clipper. The linear actuator uses alternating current to oscillate a permanent against a biasing force produced by a set of springs. The permanent magne...