ALEXANDRIA, Va., March 17 -- United States Patent no. 12,575,502, issued on March 17.
"Combine harvester concave frame assembly" was invented by Brian G. Robertson (Frisco, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A threshing concave frame assembly for crop separating operations in a combine harvester is disclosed. In one exemplary embodiment, the concave frame includes a first side member and a second side member opposing each other, wherein the first and second side members each have an interior surface and exterior surface. In addition, a crop threshing bar member is disposed between the interior surface of the first side and second side members of the concave frame. In particular, the crop th...