US Patent 11849717 Internally bonded hinge castings in composite boom structure

An agricultural machine includes a lift arm assembly and a boom including at least one support member. A first support member of the at least one support member is coupled to the lift arm assembly. Further, the first support member includes a tube and a hinge inserted into a first end of the tube. The hinge includes an extension portion disposed within the hollow tube and a hinged portion extending upward from a first end of the extension portion. The first end of the extension portion is adjacent the first end of the tube. Further, the first support member is coupled to the lift arm assembly by way of the hinged portion of the hinge.