Patent ID: 8147303

Claim:
A harvested crop remains chopper-and-distribution arrangement with a straw chopper ( 60 ) and an impeller blower ( 80 ) arranged downstream of the straw chopper ( 60 ), the impeller blower ( 80 ) including a shaft and at least one impeller blade ( 82 ) arranged so as to rotate about an axis ( 84 ) in a direction of rotation for the distribution across a field of the harvested crop remains delivered by the straw chopper, wherein an axially outer region ( 106 ) of the at least one impeller blade ( 82 ) is curved or angled towards the front of the at least one impeller blade, in the direction of rotation, wherein an axial dimension of the axially outer region ( 106 ) of the at least one impeller blade ( 82 ) increases as the axially outer region ( 106 ) extends outward in the radial direction, and wherein the at least one impeller blade ( 82 ) has an area ( 104 ) adjacent to the axially outer region ( 106 ), and wherein said area ( 104 ) has an axial dimension that decreases as the area ( 104 ) extends outward in a radial direction, and wherein said area ( 104 ) either flat or is curved to the front in a concave curve in the direction of rotation, and wherein said area ( 104 ) is flatter in an axial direction than the axially outer region ( 106 ).