Abstract: The invention relates to a folding clasp having at least one folding arm (1, 2) articulated with respect to a base plate (3), with a locking means (4) located on the base plate (3), permitting a locking of said at least one folding arm (1, 2) by pressing said folding arm (1, 2) onto said locking means (4), said locking means (4) being compressible and/or deformable in a first plane (TT') parallel to a base surface of said locking means (4).

Abstract: A clasp fastener having a clasp (1) is designed to be snapped into engagement by exerting a closing force. A locking device (4) for locking the clasp (1) is placed by the closing force in an engaged position in which it is in a first snap engagement with a locking projection (6), and a closing member (5) for closing the clasp (1) is fixed by the closing force in a safety position in which it is in a second snap engagement with the locking device (4) so that the snapping force of the first engagement of the clasp (1) with the locking projection (6) is increased. At least one variable-diameter pin (17,18) that is flexible and/or has different diameters allows some movement of the locking device (4), so that the effective closing force exerted on the locking projection (6) is reduced.

Abstract: The invention relates to a clasp (1) for a band or bracelet (2) having two strips (6, 8) articulated with respect to one another by one of their ends across a common hinge (10), having a cover (3) and a base (9) detachably arranged around a common rod (11), which is guided by a transverse branch (6.4) firmly fixed to the first strip (6), having a first bracelet strand (2.1) fixed to the second strip (8), having a tongue (4) mounted on the base (9) permitting the fixing of a second bracelet strand (2.2), a reinforcement of said fixing taking place by lowering the cover (3) onto the tongue (4) and the lowered cover (3) and base (9) are jointly articulated with respect to the first strip (6), making it possible to open the clasp (1) in order to remove the bracelet (2) without undoing the fixture.

Abstract: At one of the extremities of the bracelet, which is formed of two rows of rectangular side links (1,2) and of a middle row of rectangular wider links (3), is arranged an end piece (6) having the appearance of two side links and of a middle link. This piece (6) is fixed to a clasp (5) by the intermediary of a slide (7). The piece (6) presents a series of lateral holes and the slide a corresponding hole which one can bring, according to choice, face to face with one or the other of the holes of the piece (6) in order to exactly adapt the length of the bracelet to the wrist. A pin driven into the holes which coincide secures (6) and (7) with regard to one another. Thus finds itself made possible the precise adjusting of the length of bracelets with large rectangular links.