Patent ID: 6524183
Filing Date: 2003-02-25
Classification: A01D,A01F

Abstract:
A combine harvester comprising:a main frame; a threshing and separating arrangement mounted to said main frame and including a threshing or separating rotor co-operating with a curved threshing or separating concave; and a grain sensor having a generally planar grain detection surface with the central normal of the plane of said detection surface extending through the axis of said rotor at a location forward of the position of said grain sensor such that said detection surface will be directly hit by part of the crop flow from said concave and thereby provide a signal indicative of the quantity of grain kernels in said crop flow; wherein the plane of said detection surface and the plane tangent to said concave section intersect at an acute angle (&bgr;) and said detection surface is inclined with respect to the horizontal and the vertical plane such that said detection surface is not directly below said concave.