ALEXANDRIA, Va., June 9 -- United States Patent no. 12,648,521, issued on June 9, was assigned to CLAAS Saulgau GmbH (Bad Saulgau, Germany).
"Rotary rake" was invented by Michael Beyrle (Ettingen, Germany), Roland Schelkle (Bad Saulgau, Germany) and Raphael Schupp (Neukirch, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "Rotary rake (20) having a base frame (21) comprising a longitudinal bar (22) and extension arms (23) arranged on both sides of the longitudinal bar (22), wherein the rotary rake (20) is able to be coupled to a towing vehicle via a drawbar (25) attached to the longitudinal bar (22), having rake rotors (26) that are driven in rotation about a respective rotor axis, have tine arms (27) ...