Abstract: An extendible and retractable screen partition, and a hinge device suitable for incorporation into such a screen partition. The screen partition includes panel-shaped elements interconnected by hinge devices. A releasable fastener secures one end panel-shaped element to a wall. A telescoping leg extends from the bottom of the other end panel-shaped element. Preferably, this leg is spring-biased outwardly and has a wheel on its end, with a brake to secure the end panel-shaped element in a desired position. A second telescoping leg can extend from one of the centrally disposed panel-shaped elements. The hinge device includes first and second hollow body members having three interconnected curved wall portions, with an anchor extending from a concave surface of one of the wall portions to secure the hinge device to a panel-shaped element of a screen partition or other structure. Preferably the wall portions are resilient.

Abstract: The present invention relates to a structural element for realizing continuous surfaces, for example a screen, a partition wall, a hoarding or the like, essentially for screening-off from noise, view, etc., each corner (5, 6, 7, 8) of a substantially quadrilateral, hollow profile (1-8) being reversed and directed in towards the center of the profile (1-8), and at least one side (1) of the profile (1-8) indented because of corner reversal, being provided, at each edge, with an outwardly directed flange (9, 10), the flanges (9, 10) being parallel with one another and fitting over the sides, indented because of corner reversal, of another substantially identical profile (1-8).