Combine harvester concave threshing bar

Abstract

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 1.3× 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.

What is claimed is: 
     
         1 . A concave threshing bar, comprising:
 a cylindrical threshing bar having cut-out that extends to a length of the threshing bar, wherein the threshing bar is secured to a concave; and   the cut-out comprising a first surface and a second surface, wherein the first surface is at an angle greater than 90° relative to the second surface, and wherein the first surfaces comprises a surface area that is larger relative to a surface area of the second surface.   
     
     
         2 . The threshing bar of  claim 1 , wherein the surface area of the first surface is about 130% larger or about 1.3 times larger relative to the surface area of the second face. 
     
     
         3 . The threshing bar of  claim 1 , wherein the surface area of the first surface is about 170% larger or about 1.7 times larger relative to the surface area of the second surface. 
     
     
         4 . The threshing bar of  claim 1 , wherein the surface area of the first surface is about 101% to 199% larger or about 1.01 times up to 1.99 times larger relative to the surface area of the second surface. 
     
     
         5 . A concave threshing bar, comprising:
 a concave having a pair of arcuate side members;   a threshing bar having a channel extending a length of the threshing bar, wherein the threshing bar is secured between the pair of arcuate side members of the concave; and   the channel of the threshing bar having a first face and a second face, wherein the first face is sloped relative to the second face, and wherein the first or second face each comprise a surface area that is larger relative to each other.   
     
     
         6 . The concave threshing bars of  claim 5 , wherein the first and second face are of varying dihedral angles. 
     
     
         7 . The threshing bar of  claim 5 , wherein the surface area of the first face is about 130% larger or about 1.3 times larger relative to the surface area of the second face. 
     
     
         8 . The threshing bar of  claim 5 , wherein the surface area of the first face is about 170% larger or about 1.7 times larger relative to the surface area of the second face. 
     
     
         9 . The threshing bar of  claim 5 , wherein the surface area of the first face is about 101% to 199% larger or about 1.01 times up to 1.99 times larger relative to the surface area of the second face. 
     
     
         10 . A concave threshing bar, comprising:
 a cylindrical threshing bar comprising a notch extending a length of the threshing bar, wherein the threshing bar is secured to a concave; and   the notch of the threshing bar comprising a first surface and a second surface, wherein the first surface is at a sloped angle relative to the second surface, and wherein a surface area of the first face is at least about 101% to 199% larger or about 1.01 times up to 1.99 times larger relative to a surface area of the second face.   
     
     
         11 . The concave threshing bars of  claim 10 , wherein the first and the second face are of varying dihedral angles. 
     
     
         12 . The threshing bar of  claim 10 , wherein the surface area of the first face is further about 130% larger or about 1.3 times larger relative to the surface area of the second face. 
     
     
         13 . The threshing bar of  claim 10 , wherein the surface area of the first face is further about 170% larger or about 1.7 times larger relative to the surface area of the second face.