Abstract: The timepiece comprises at least one pushbutton (9), at least one control member actuable by the pushbutton (9) and a device (10) for locking the pushbutton (9), and is characterized in that the locking device (10) is arranged to permit the pushbutton (9) to occupy an unlocked axial position, from which it can be pressed to actuate the control member, and a locked axial position, nearer the interior of the timepiece than the unlocked axial position and in which the control member is not actuated.

Abstract: The timepiece comprises a case (1), a mechanism (6) disposed in the case (1) and a rotatable control member (10) manipulable by a user, and is characterized in that the rotatable control member (10) is movable in translation relative to the case (1) in a direction substantially perpendicular to the axis (A) of the rotatable control member (10), between first and second positions, and in that in at least one of these first and second positions a rotation of the rotatable member (10) controls a function of the mechanism (6).

Abstract: A device for assembling two mechanical pieces, of which the first one (3) carries a skirt (14), which, in the assembled position, extends into a cavity of the second piece (1), by means of an elastic segment (5), is characterised by the fact that the elastic segment (5) is made of a material exhibiting a shape memory. This segment (5) can assume two different shapes, depending upon its temperature. This elastic segment (5) has an external peripheral part which is circular and which is engaged into a circular groove (4) provided on the second piece (1), this circular groove (4) being located in a plane which is perpendicular to the axis of the cavity of this second piece (1); this elastic segment (5) carries, on its inner periphery, protrusions (7) which, in a first state of the segment (5) are situated in the plane of the external peripheral part of the segment (5) and, in a second state of the segment (5), protrude out of this plane.

Abstract: A clasp for a bracelet, which makes it possible to bring together and to fasten together the two ends of a bracelet in a closed position and to separate these two ends of the bracelet in an open position, includes two pairs of interchangeable linkage members for connecting the ends of the bracelet to the body of the clasp, one of the pairs of linkage members being designed for connection to the ends of a flexible strap and the other for connection to the ends of a band of rigid links. Each linkage member is connected hingedly to the body of the clasp by a locking part which can be operated without the use of a tool other than a ball-point pen.

Abstract: An expansible closure for a bracelet includes a central portion articulated at at least one of its ends to at least one arm located beside the central portion and adjacent to the central portion in a closed position. The at least one arm includes at least one pin having a locking member that emerges in a rest position under an action of a spring from outside a recess in a lateral section of the at least one arm. The central portion includes a locking device having a pusher, and at least one recess provided in a medial section of the central portion adapted to receive the locking member. The medial section of the central portion includes a notch, in a shape of an inclined plane coacting with the locking member during closing of the closure. In a completely closed position, the locking member extends, under the action of the spring, within the recess of the central portion.

Abstract: A device for assembling two mechanical pieces, of which the first one (3) carries a skirt (14), which, in the assembled position, extends into a cavity of the second piece (1), by means of an elastic segment (5), is characterised by the fact that the elastic segment (5) is made of a material exhibiting a shape memory. This segment (5) can assume two different shapes, depending upon its temperature. This elastic segment (5) has an external peripheral part which is circular and which is engaged into a circular groove (4) provided on the second piece (1), this circular groove (4) being located in a plane which is perpendicular to the axis of the cavity of this second piece (1); this elastic segment (5) carries, on its inner periphery, protrusions (7) which, in a first state of the segment (5) are situated in the plane of the external peripheral part of the segment (5) and, in a second state of the segment (5), protrude out of this plane.

Abstract: A clasp for a bracelet, which makes it possible to bring together and to fasten together the two ends of a bracelet in a closed position and to separate these two ends of the bracelet in an open position, includes two pairs of interchangeable linkage members (7, 8) for connecting the ends of the bracelet to the body (1, 2, 3) of the clasp, one of said pairs of linkage members (7) being designed for connection to the ends of a flexible strap and the other (8) for connection to the ends of a band comprised of rigid links. Each linkage member (7, 8) is connected hingedly to the body (1, 2, 3) of the clasp by a locking means which can be operated without the use of a tool.

Abstract: The expansible closure for a bracelet comprises a central portion (1) articulated at at least one of its endsot at least one arm (2, 3) located beside the central portion (1) and adjacent the latter with one of its sections in the closed position. The arms (2, 3) each comprise at least one pin whose locking member (23) emerges in the rest position under the action of its spring outside said lateral section of the arm (2, 3). The central portion (1) comprises a locking device comprising a pusher (8), at least one recess (15) provided in the section of the central portion (1) adapted to receive a locking member (23), this lateral section of the central portion (1) comprising a notch (24), in the shape of an inclined plane coacting with a locking member (23) during closing of the closure. In the completely closed position, the locking member extends, under the action of its spring, within the recess (15) of the central portion (1).