ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,475, issued on June 17, was assigned to HAMM AG (Tirschenreuth, Germany).
"Soil processing roller" was invented by Stefan Bauml (Tirschenreuth, Germany) and Gunter Rath (Krummennaab, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A soil processing roller includes an elongated roller shell that rotates about a roller axis of rotation and a first fluid chamber in a roller interior space delimited by the roller shell. In association with the first fluid chamber a first opening group is provided which includes a first filling opening, a first discharge opening and a first fill level control opening. A shielding element is arranged in an axial en...