A threshing concave assembly is disclosed having a threshing concave bar wherein the threshing bar is comprised of two threshing surfaces having a dihedral angle relationship relative to each other. In addition, in another aspect the threshing bar can be comprised of two dihedral surfaces whereby one surface face has about 130% greater surface area than its adjacent surface face. Alternatively, one surface face of the threshing bar can be 1.3x wider than its adjacent surface face. In another aspect the threshing bar can be comprised of two dihedral surfaces whereby one surface face has about a 170% greater surface area than its adjacent surface face.

The present invention comprises multiple embodiments of an automated, dynamic cover plate system, which may be quickly attached, detached and adjusted to the exterior of a concave grate of a combine harvester in order to adjust the flow characteristics of the concave or separator grate assemblies. The automated, dynamic cover plate system improves the threshing capability of the rasp bar threshing cylinder while simultaneously capturing additional threshed grain. The automated, dynamic cover plate system of the present invention is designed to be controlled, either manually or automatically, by the operator of the combine harvester or by a computerized or automated intelligence system.

The present invention comprises multiple embodiments of an automated, dynamic cover plate system, which may be quickly attached, detached and adjusted to the exterior of a concave grate of a combine harvester in order to adjust the flow characteristics of the concave or separator grate assemblies. The automated, dynamic cover plate system improves the threshing capability of the rasp bar threshing cylinder while simultaneously capturing additional threshed grain. The automated, dynamic cover plate system of the present invention is designed to be controlled, either manually or automatically, by the operator of the combine harvester or by a computerized or automated intelligence system.

An adjustable vane system for use with a rotor cage of a threshing system of an agricultural harvester includes a vane. The vane includes: a generally helically curved inner profile; a surface being an outer profile that is opposite the inner profile and is generally helically curved over a portion of the vane, the outer profile being configured to be positioned closer to the rotor cage than the inner profile; and a flat portion located midway along the outer profile.

A threshing and separating system for an agricultural harvester includes: a rotor; a rotor cage at least partially enclosing the rotor, the rotor cage including a first flat wall, a second flat wall connected to and angled with respect to the first flat wall, and a curved wall connected to the second flat wall; and at least one vane connected to the first flat wall or the second flat wall.

A threshing and separating system for an agricultural harvester includes: a rotor; a rotor cage at least partially enclosing the rotor, the rotor cage including a first flat wall, a second flat wall connected to and angled with respect to the first flat wall, and a curved wall connected to the second flat wall; and at least one vane connected to the first flat wall or the second flat wall.

An agricultural vehicle crop feeder system having housings defining a crop passage, a conveyor assembly, a rotor, a guide plate, and one or more guide vanes extending from the guide plate. The conveyor assembly propels crop material along a feeder flow direction to the rotor. The rotor has inlet vanes that receive the crop material in a receiving region located below the rotor's axis. The leading edges of the rotor inlet vanes travel towards the receiving region on a first transverse side of the rotor axis and away from the receiving region on a second transverse side of the rotor axis. The guide plate is adjacent the receiving region. The guide vane extends into the crop passage on the first side of the rotor axis, and angled relative to the flow direction with its trailing edge closer to the first rotor axis, in the transverse direction, than the leading edge.

An agricultural vehicle crop feeder system having housings defining a crop passage, a conveyor assembly, a rotor, a guide plate, and one or more guide vanes extending from the guide plate. The conveyor assembly propels crop material along a feeder flow direction to the rotor. The rotor has inlet vanes that receive the crop material in a receiving region located below the rotor's axis. The leading edges of the rotor inlet vanes travel towards the receiving region on a first transverse side of the rotor axis and away from the receiving region on a second transverse side of the rotor axis. The guide plate is adjacent the receiving region. The guide vane extends into the crop passage on the first side of the rotor axis, and angled relative to the flow direction with its trailing edge closer to the first rotor axis, in the transverse direction, than the leading edge.

The present invention comprises multiple embodiments of an automated, dynamic cover plate system, which may be quickly attached, detached and adjusted to the exterior of a concave grate of a combine harvester in order to adjust the flow characteristics of the concave or separator grate assemblies. The automated, dynamic cover plate system improves the threshing capability of the rasp bar threshing cylinder while simultaneously capturing additional threshed grain. The automated, dynamic cover plate system of the present invention is designed to be controlled, either manually or automatically, by the operator of the combine harvester or by a computerized or automated intelligence system.

The present invention comprises multiple embodiments of an automated, dynamic cover plate system, which may be quickly attached, detached and adjusted to the exterior of a concave grate of a combine harvester in order to adjust the flow characteristics of the concave or separator grate assemblies. The automated, dynamic cover plate system improves the threshing capability of the rasp bar threshing cylinder while simultaneously capturing additional threshed grain. The automated, dynamic cover plate system of the present invention is designed to be controlled, either manually or automatically, by the operator of the combine harvester or by a computerized or automated intelligence system.