ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,376, issued on June 3.
"Drive element" was invented by Nicole Bongartz (Neuss, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A drive element has an internal driving profile that defines a profile axis (PI) and has, on its inner side, a plurality of concave drive surfaces arranged in a manner distributed regularly around the profile axis (PI), between which a planar or convexly curved transition surfaces are provided, or which has an external driving profile that defines a profile axis (PA) and has, on its outer side, a plurality of concave drive faces arranged in a manner distributed regularly around the profile axis (PA), between which plan...