ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,846, issued on March 18, was assigned to Andis Co. (Sturtevant, Wis.).

"Snap fastened drive cap assembly" was invented by John Harlan Peterson Jr. (Oak Creek, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A drive cap uses snap fasteners to couple with the housing assembly of a hair clipper. The drive cap uses joining structures to align with the upper and lower housings of the housing assembly. Once correctly aligned, snap fasteners enable a snug fit and enhance the finish of the hair clipper. The snap fasteners can be located on an inner surface of the drive cap, lower housing, and/or upper housing. A snap detent is located on the inner surf...