US 9,807,937 B2
Agricultural harvester with improved rotor transition geometry
Wayne T. Flickinger, Oxford, PA (US); and Jonathan E. Ricketts, Coal Valley, IL (US)
Assigned to CNH Industrial America LLC, New Holland, PA (US)
Filed by CNH Industrial America LLC, New Holland, PA (US)
Filed on Jul. 16, 2015, as Appl. No. 14/801,353.
Prior Publication US 2017/0013781 A1, Jan. 19, 2017
Int. Cl. A01D 34/00 (2006.01); A01F 7/06 (2006.01); A01F 12/10 (2006.01); A01F 12/24 (2006.01)
CPC A01F 7/06 (2013.01) [A01F 12/10 (2013.01); A01F 12/24 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An agricultural harvester, comprising:
a chassis; and
a threshing and separating system carried by said chassis and configured for threshing and separating grain from gathered crop material, said threshing and separating system including:
a rotor defining a longitudinal axis;
a concave at least partially surrounding said rotor;
a transition cone defining an infeed to said rotor; and
a transition surface connecting said transition cone to said concave and having a conical portion defined about said longitudinal axis and a blended portion connected to said conical portion, said blended portion defining a first end connected to said conical portion and a second end distanced from said first end in a lateral direction, said blended portion defining a substantially conical shape about said longitudinal axis at said first end and approaching a substantially cylindrical shape about said longitudinal axis toward said second end, said transition surface having a transition length in a direction parallel to the longitudinal axis, the transition surface having a front and a back, the front of said transition surface at said first end of said blended portion having a diameter of said conical portion, the back of said transition surface at said first end of said blended portion having a cylindrical shape and a diameter, the diameter at the back of said transition surface at said first end of said blended portion being approximately equal to a diameter of the front of said transition surface at said second end of said blended portion.