Abstract: The invention pertains to a double-acting control element for a wrist-top computer, comprising a crown, which can be moved in axially and radially, a reaction bar, connected to the and parallel to a crown's rotational axis. The reaction bar is arranged to transmit the movements of the crown from outside to the inside of a case. Switches are permanently fitted to the inside of the case. An axial switch is arranged to switch on from the axial movement of the crown. A radial switch is arranged to switch on from the radial movement of the crown. A slide, at least partly inside the case, is arranged to transmit the axial movement of the reaction bar to the axial switch and a gearwheel. The gearwheel is arranged to link the reaction bar to the slide to transmit the radial movement to the radial switch.

Abstract: A portable device, such as a wristwatch, has a push-button that includes an engaging portion, and the push-button is mounted on a watch sheath. A locking member and a leaf spring are arranged on the watch sheath. The locking member is movable between a locked position in which the push-button is held at a predetermined position by engagement with the engaging portion and an unlocked position where operation of the push-button is allowed. The locking member is urged by the leaf spring toward the unlocked position. A circular operating ring surrounds an hour plate mounted on the watch sheath and the operating ring is rotatably mounted to the watch sheath from the front side. The movement of the locking member between the locked position and the unlocked position is interlocked with a rotating operation of the operating ring.

Abstract: A portable device, such as a wristwatch, has a push-button that includes an engaging portion, and the push-button is mounted on a watch sheath. A stopper is arranged on the watch sheath. The stopper is movable between a locked position in which the push-button is held at a predetermined position by engagement with the engaging portion and an unlocked position in which the operation of the push-button is allowed. A circular operating ring surrounds an hour plate mounted on the watch sheath and is rotatably mounted on the watch sheath from the front side thereof. The movement of the stopper between the locked position and the unlocked position is interlocked with the rotating operation of the operating ring.

Abstract: The bezel (2) allows the same reading direction to be kept for the indications (20) carried by a ring (4) able to rotate freely on a base (6) to which it is affixed to bring a selected indication (20) opposite a determined marking of the base (6) or of a dial (3). The indications (20) are marked on the outer surface of studs (10) each kept free in rotation about their rotational axis (10a) in a housing (30) provided through the thickness of the ring (4) and opening onto the base (6).

Abstract: A time adjustment assembly for a timepiece comprises a fast hour wheel that is movable between a first position where it is not rotationally engageable with the hour wheel and a second position where it is rotationally engageable with the hour wheel; a corrector wheel, mounted on the setting stem, for rotating the fast hour wheel; and a setting spring selectively engageable with the fast hour wheel to move the fast hour wheel between the fast hour wheel's first position and second position; wherein when the fast hour wheel is in rotational engagement with the hour wheel the setting stem is out of engagement with the setting wheel and an hour hand is movable independently of the minute hand via the rotation of the setting stem.

Abstract: Control button having a metal body (10) provided along its axis with a blind hole (16) closed by a cap (18) and extended by a wall (14) of revolution. The body (10) includes a groove (20) made in the outer surface of the wall (14) and channels (26) connecting said surface to the inside of the blind hole (16). The button further includes a fitting (12) made of synthetic material, formed of a ring (28) closing the groove and extended radially by raised portions (34) as far as the openings of the channels (26) in the wall (14) of a radial structure with several branches (30) closing the channels (26), and a core (32) connecting the branches (30) to secure between them the different parts (28, 30, 32, 34) of the fitting (12).

Abstract: A watch with improved water-proof and pressure-resistance characteristics is disclosed. It comprises: (a) a casing, a bottom cover affixed to the casing, a screw winding crown, and a receiving port on the casing for receiving the screw winding crown; (b) a first double-thread coupling arrangement provided between the screw winding crown and the receiving port; and (c) a second double-thread coupling arrangement provided between the casing and the bottom cover. The first double-thread coupling arrangement comprises an externally and internally threaded annular section provided on the screw winding crown, a matching externally and internally threaded annular recess provided in the receiving port, and a first packing ring provided between the receiving port and the screw winding crown.

Abstract: A seal assembly which is screw threaded onto the stem of a wrist watch with the seal and stem being related to a tube connected with the watch case in a conventional manner. The screw-on seal of this invention includes an internally threaded member engaged with an externally threaded portion of the watch stem with the exterior surface of the internally threaded member being provided with a groove or notches receiving an O-ring seal to enable relatively quick and easy repair of a watch when an existing stem is broken due to weakened areas in the stem formed when a conventional seal is positioned in a groove on the stem. This seal assembly can also be used in new watch construction especially when installed in combination with a conventional water seal crown thereby providing double protection against entry of water, moisture, dust and similar material that may adversely affect the operation of the watch.

Abstract: A timepiece containing, primarily, a first transparent element (1) visible from the outside of the piece, characterized in that this element has an adherent lining (2, 4) applied to at least part of its surface and assuring the attachment to that element of a decorative outer coating of hard material (3) and/or of a layer of high-temperature soldering material (5).