ALEXANDRIA, Va., June 12 -- United States Patent no. 12,295,289, issued on May 13, was assigned to CALMER HOLDING COMPANY LLC (Lynn Center, Ill.).
"Stalk roll" was invented by Marion Calmer (Lynn Center, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hybrid flute for a stalk roll may be configured with a sharp edge positioned between a first blunt edge and a second blunt edge along a length of the flute edge. The flute edge may extend radially outward from a main cylinder of the stalk roll. The flute edge may be engaged with a radius at the base of the flute edge, and a flute base may extend from the radius. A plurality of flute bases positioned adjacent to one another may be configured to form a main...