Abstract: A reversibly deformable frame for the backs of sofas, settees, divan beds and the like comprising a set of rod-shaped members with a vertical axis which can be deformed in any direction placed parallel in a vertical direction and integral with a base having rigid members placed in the vertical direction hinged together and forming a band which can be arched in the horizontal direction, the upper vertical part of the said frame comprising uprights formed from deformable rod-shaped members with a lower rigid part integral with the said band, the entire frame assembly being capable of being fixed to the seat of the sofa or settee to which the back is fitted by means of outer uprights which can be inserted into suitable supports.

Abstract: A sofa or similar seating with backrests, armrests or additional fixtures that can be positioned as desired relative to the seating, while providing a platform-like basic structure that accommodates the upholstery so as to form the seat surface, with which backrests and/or armrests and/or additional fixtures are connected through a U-shaped element that is preferably of metal tubing, the free ends of this element being connected with the backrests, armrests or additional fixtures and the U-shaped element is of a curved shape as viewed from the side, this forming contact points for the element on the floor, with the end of the element that is bent upwards resting on the underside of the base plate of the sofa so as to form a backing therefor.