.~.~ Similar planar frames pivotally joined inwardly of their edges (e.g, crossed frames, etc.)
DEFINITION
Classification: 211/200
(under subclass 195) Device wherein the framework includes two or more framework sections, each of which sections includes article-supporting element(s) and element-connecting members lying in a common plane surrounded by an edge or border and each of the sections resembling the other(s) in appearance and construction, which sections are connected each to the other(s) by an articulated connection located within nonadjacent portions of the border of each section, whereby the sections intersect one another along an axis of articulation common to all the sections.
(1) Note. The framework taken as a whole resembles a letter "X" when it is viewed along the pivot axis.