Patent ID: 7803040

Claim:
A concave adjust assembly for a threshing system of an agricultural combine, comprising: an elongate torsion axle defining a longitudinal direction, the torsion axle including an inner element having an angular sectional shape and opposite longitudinal ends, a tubular outer element disposed about the inner element, the outer element having an angular sectional shape having a larger sectional extent than a sectional extent of the inner element and being oriented relative thereto such that corner portions of an inner surface of the outer element are disposed in generally opposing relation to flat portions of an outer surface of the inner element and define spaces therebetween and such that the outer element and the inner element are laterally relatively rotatable, and elongate resilient damping elements disposed in the spaces, respectively, such that forces exerted urging the lateral relative rotation of the outer element and the inner element will load the damping elements compressively, respectively; and a drive connected in rotatably driving relation to one of the inner element and the outer element and the other of the inner element and the outer element being connected to a concave of a threshing system of a combine, the drive including a motor mounted to fixed structure of the combine, such that operation of the motor will rotate the element connected thereto in a manner for moving the concave relative to the fixed structure, while the damping elements will damp impulse loads exerted thereagainst by the concave to limit or reduce transmission of the loads to the drive.