Abstract: An articulation system for two panels, comprising a flexible hinge (4) and edge sections (1, 2; 3) for the panels, for receiving and retaining the flexible hinge, a flexible hinge (4) having a central tubular portion (13) arranged in the vicinity of the median plane of the panels is provided and includes two flanges (14, 15) adapted to snap lock into the edge sections; the latter comprise channels (L1, L2) permitting this snap locking engagement, and guide surfaces (S, Sc; Sax, Sac, AL) are arranged on respective parts about the median plane of the panels, for guiding their pivotal movement about an axis of rotation passing through the central tubular portion of the flexible hinge. The invention may in particular be used with sectional doors.

Abstract: A movable shutter to be placed over an opening is made up essentially of horizontal sections, each of which sections comprise an intermediate section or filler of polycarbonate. A male extrusion is fixed to the filler at the top and a female extrusion at the bottom. This makes it possible to assemble the sections together. The shutter is guided by rollers carried by the sections. These rollers move in vertical guiding tracks fixed on the opening and continue on horizontal tracks mounted from the ceiling. The operation of the shutter is made easier by means of a compensation spring fixed above the opening. An anti-dislocation lock is mounted forcibly inside or attached onto two partitions of the female extrusion. When the ball and socket of a hinge are interlocked, the guide and the shoulder of the anti-dislocation lock are superimposed and their respective holes are aligned.