A Dewar device is for mechanical and/or functional components of a watch. The device is provided with a wristlet and a casing. The casing includes a chamber in which a case of the watch is capable of being arranged in a removable manner, and a device for reversible fastening by magnetic levitation of the watch case in the chamber configuring a separation between the case and the set of the elements of the casing forming the chamber.

A Dewar device is for mechanical and/or functional components of a watch. The device is provided with a wristlet and a casing. The casing includes a chamber in which a case of the watch is capable of being arranged in a removable manner, and a device for reversible fastening by magnetic levitation of the watch case in the chamber configuring a separation between the case and the set of the elements of the casing forming the chamber.

Disclosed is a decorative object including an upper glass, a lower glass, a recessed pattern formed in the lower glass and facing the upper glass, a liquid filling the recessed pattern, the refractive index of the liquid being equal to that of the lower glass or differing from that of the lower glass by at most 10%, and solid elements which can move in the liquid.

Disclosed is a decorative object including an upper glass, a lower glass, a recessed pattern formed in the lower glass and facing the upper glass, a liquid filling the recessed pattern, the refractive index of the liquid being equal to that of the lower glass or differing from that of the lower glass by at most 10%, and solid elements which can move in the liquid.

The invention concerns an automatic safety valve for timepieces, particularly for dive watches, the valve including a valve head housed inside a tube intended to be fixed inside a case of the timepiece, the valve head including an outlet channel arranged to be capable of fluid communication with the inside of the case via a passage provided in said tube, when the pressure inside the case exceeds the pressure outside the case, in order to evacuate excess fluid, said valve head including a central core fixedly mounted inside said outlet channel, a lip seal having an annular base region and lip, the lip seal being disposed around said core and arranged so that the lip is squeezed against an area of a wall of the outlet channel, in order, on one hand, to be able to disengage from said area to allow pressure compensation between the interior of the case and the exterior of the case in the event of excess pressure inside the case, and on the other hand, pressed against said area to ensure the sealing of the interior of the case with respect to the exterior in the event of excess pressure outside the case, the safety valve further including an additional sealing element arranged inside the outlet channel between the lip seal and the interior of the case, said additional sealing element including a membrane arranged to be permeable to gases and to establish fluid communication from the interior of the case towards the exterior, when said internal pressure exceeds a predetermined value, and impermeable to liquids flowing from outside the case towards the interior of the case.

The present invention relates to a safety valve including: a tube intended to be fixed to a watch case, a hollow head mounted for rotation about the tube, a first element fixedly mounted with respect to the head and a second element integral with the head,
wherein the first element and the second element each include one or more passages allowing gas to flow, the rotational motion of the head allowing the passages of the first element and of the second element to be placed in communication for gas to escape from the interior to the exterior of the case in case of overpressure inside the case or, conversely, allowing the passages of the first element and of the second element to be moved out of alignment to prevent gas escaping.

A safety valve for a watch including a head that is movably mounted on a tube and able to move between an open position and a closed position, the tube including in its internal volume a first spring and wherein the tube is provided on an external face with a cam surface allowing a manual movement and an automatic movement of the head into its open position, after the first spring, the tube includes a second spring having a higher stiffness than that of the first spring.

There is provided an electronic watch including a bracelet and a watch case including at least one electrical or electronic component, the watch including at least one Dewar device configured to contain at least one of said electrical or electronic components, the at least one Dewar device including inner and outer walls and a vacuum or quasi-vacuum space defined between these said walls, the inner wall delimiting a volume wherein said at least one electrical or electronic component may be arranged.

There is provided an electronic watch including a bracelet and a watch case including at least one electrical or electronic component, the watch including at least one Dewar device configured to contain at least one of said electrical or electronic components, the at least one Dewar device including inner and outer walls and a vacuum or quasi-vacuum space defined between these said walls, the inner wall delimiting a volume wherein said at least one electrical or electronic component may be arranged.

A portable electronic apparatus (wrist apparatus) includes a case (top case and bottom case), a display section accommodated in the case, a windshield that closes an opening section of the case in such a way that the windshield overlaps with the display section in a plan view, a ring member (parting plate) that is disposed between the windshield and the display section and along the outer edge of the display section, a hygroscopic member that is disposed inside the case and in a first region (internal space) opposite the windshield with respect to the display section, and an air-flow channel (recessed section) that allows the first region to communicate with a second region (space) surrounded by the display section, the windshield, and the ring member.