US Patent 7028442 Deployable truss beam with orthogonally-hinged folding diagonals

A deployable single truss with folding or removable chordal members and diagonals and orthogonal hinge joints for continuous and synchronous retraction and extension, in straight and curved configurations. One or more endframes may be used to close off or mount one of more ends of the deployable trusses. A primary orthogonal hinge joint is used to connect the chordal members and diagonals of the deployable trusses along each primary chord. A secondary orthogonal hinge joint to connect the chordal members and diagonals of the deployable trusses along each secondary chord.