Abstract: Curtain wall comprising a reticular supporting structure, provided with uprights and cross-pieces, and covering elements attached to the supporting structure. The uprights and the crosspieces include first attachment members for closure profiles positioned between two adjacent covering elements and provided with mating second attachment members.

Abstract: The system for joining mullions to transoms by frontal link here described uses: transoms (3) with channels whose longer axis is the vertical axis and mullions provided with at least two seats; each seat is provided with at least one coupling jaw, one holding jaw and one inclined plane; an insert joins the mullion to the transoms; it is formed by a body and a connection beam provided with a coupling jaw. The body of the insert is housed in at least one of the above mentioned channels of the transom; the insert is provided with holes in which screws and dowels are inserted; a spacer is placed between one insert and the one above it in order to separate the transoms vertically; the coupling jaw on the insert joins with the coupling jaw on the mullion; the above mentioned screws engrave the holding jaw of the mullion thus producing horizontal grooves; the dowels prevent the insert from moving within the transom.

Abstract: The present invention relates to a self-locking coupling structure for connecting accessories to profiled elements which has the peculiarity of comprising a body which defines a protrusion which can be inserted between the opposite wings which delimit a seat on a profiled element. The protrusion has a curved surface which is delimited, on one side, by an engagement portion which can be inserted below one of the wings by rotation about an axis which is substantially parallel to the longitudinal extension of the profiled element and is suitable for generating a localized deformation of the wing substantially in the portion affected by the longitudinal extension of the protrusion, and, on the other side, by a stop portion which can engage below the other wing. The protrusion, in locking position, abuts against the bottom of the seat in at least two points which are mutually spaced in a transverse direction with respect to the longitudinal extension of the profiled element.