Abstract: A collapsible, articulated structural section which is movable between a stable erect configuration and a collapsed configuration includes a manually actuable positive lock for locking the device in its erect configuration. Four pairs of scissored links connected to exterior pivots at their ends form the exterior of the section, and the interior is formed by a pair of face pivots and four pairs of crossed, but unconnected, face links, each pivotally connected at one end thereof to an exterior pivot and at the other end thereof to a face pivot. A through-extending opening is provided in one face pivot, and a locking component including a shaft portion insertable into the opening, and a rotatable locking member mounted on the end of the shaft, are mounted on the other face pivot.

Abstract: A display frame is formed by a number of collapsible, articulated structural sections movable between a stable erect configuration and a collapsed configuration. Four pairs of scissored links are connected to exterior pivots at their ends to form the exterior of each structural section, and the interior is formed by a pair of face pivots and four pairs of crossed, but unconnected, face links, each pivotally connected at one end to a face pivot. A through-extending opening is provided in one face pivot, and a locking component is associated with the other face pivot. One of the structural sections of the frame has as the locking component a cam follower member which during movement of the face pivots towards each other is cammed by a linear cam associated with the through-extending opening, and then snaps to lock in place.

Abstract: A collapsible, portable display frame may be erected so that it has either a planar or non-planar face surface. Snap fasteners associated with pivot bodies on the face surface cooperate with stabilizing strips or graphics. Graphics may be easily hung in sheets which cover an entire column of structural units of the display frame, and magnetic strips hold the sheets in alignment along their edges.