US Patent 11470783 Threshing or separating concave for grain harvesting

A threshing or separating concave for grain harvesting is equipped with curved cheeks, between which concave bars having an elongated cross-sectional profile extend, the curved inside edges of which are provided with a rounded inside edge, and having concave rods extending in the direction of the curve, which pass through holes in the concave bars that are immediately adjacent to the rounded inside edge.