Abstract: A pressure snap fastener with a bivalent closure comprises a first portion, to be associated with a first flap, and a second portion, to be associated to a second flap; where the portions, as associated with one another join the flaps. The pressure snap fastener further includes first temporary engagement means providing a temporary closure, in which the two portions are joined by a weakly joining and are free of partially swinging, and include second stable engagement means, providing a stable closure, in which the two portions are tightly coupled.

Abstract: A pressure snap fastener with a bivalent closure comprises a first portion, to be associated with a first flap, and a second portion, to be associated to a second flap; said portions, as associated with one another joining the flaps. The pressure snap fastener further comprises first temporary engagement means providing a temporary closure, in which the two portions are joined by a weakly joining and are free of partially swinging, and second stable engagement means, providing a stable closure, in which the two portions are tightly coupled.

Abstract: A press stud (10) comprises a male component (12) which can engage selectively by a snapping action in a female component (14) which comprises a resilient ring (15) which, in a closed condition of the press stud, keeps the male component (12) in connection with the female component (14). The female component (14) comprises a base structure (24) with a housing seat (30) for the resilient ring (15). A cover cap (34) is fixed to the base structure (24) so as to cover it at least partially and close off, at least partially, the housing seat (30) for the resilient ring (15).

Abstract: A press-stud with lateral locking, having a male component and a female component which must be associable with each other, the female component has a seat which is suitable to accommodate, by insertion, the head of a mushroom-shaped element which protrudes from the male component; the seat can be accessed by the head through an opening which has a first larger part which allows insertion of the head and a second smaller part whose dimensions are intermediate between the dimensions of the head and the dimensions of the stem, the seat accommodating elastic contrast elements which allow the head to move over them during insertion and extraction, with a movement of the head toward the first part of the opening that is larger than the second smaller part, and viceversa.

Abstract: A press-stud comprising a female part (11; 317) to which one end (14; 318) of a male part (15; 330) is anchored in the closed configuration by forcing with elastic deformation of a ring (12; 100; 200; 311; 411) that is accommodated in a circumferential groove (13; 316) formed inside the female part (11; 317), the ring being closed, being made of elastomeric material, and being accommodated in the groove (13; 316).

Abstract: The male component of a press-stud has a dome that extends, so as to form an undercut region, from a first base that is formed by blanking and plastic deformation from a metal plate.An intermediate tubular element, which is also formed by blanking and plastic deformation from a metal plate, is inserted axially in the dome, affecting part of its internal extension. The intermediate tubular element extends from a second base to be seamed to the first base by folding the perimetric edge of the first base.A stem protrudes from a third base and has such a cross-section and length as to pass through the intermediate element, perforating the fabric to which the male component of the press-stud is fixed, and to deform against the dome, interposing a wider region between the dome and the end of the intermediate element.

Abstract: A button for clothing, comprising a metallic dome associated with an equally metallic bell-shaped part, which contains a core and is associable with the fabric of the item of clothing by means of a nail. The core is provided with a disk-shaped portion with which an axial stem is associated; the free end of the stem has a square cross-section and is force-fitted inside the bell-shaped part, which becomes complementarily shaped by plastic deformation at least at its corners, producing an association in which mutual rotation of the parts is prevented. The stem is provided with a blind axial channel for the engagement of the nail and the front surface of its end is provided with first raised portions adapted to engage the fabric and to cooperate with second raised portions that extend from the facing surface of the head of the nail.