of one piece u201c forked plugs u201d each containing a cylindrical plug with two tangs and an integral post connecting the tangs allowing the forked plug to rotate application_number US 22865105 A description the articulating hub assembly of the present invention comprises a novel means for pivotally joining a network of tubes forming the matrix for a collapsible deployable structure multiple assemblies are used as pivotal devices for the movement of tubes to allow the quick erection and striking of a tubular frame supported structures a first significant feature of the present invention is to allow the tubes to articulate or move when either upward i e vertical or opposing side i e horizontal forces are applied more specifically with respect to a collapsed network of tubes assemblies etc laid out prior to erection when manual upward pressure is applied at 90 u00b0 i e perpendicular to the ground at specific locations on the network multiple hub assemblies are displaced from positions physically contacting the ground to specific elevated positions above the ground the upward vertical force creates an action that moves the articulating hub assemblies of the present invention from static positions to tension positions and forms a structure of interconnected tubes and articulating hub assemblies that is self supporting.