The invention relates to a screw-down orientable crown comprising a cover integral with a tube and receiving a distinctive sign, a fixed body pressed into a watch case middle and intended to receive the tube, and means for adjusting the angular orientation of the cover with respect to the case middle. According to the invention, the means for adjusting the angular orientation of the cover comprise a ring arranged to be screwed onto the tube, said ring comprising first indexing means arranged to cooperate with second indexing means formed in the body, the ring being pressed in and positioned on the body via the first and second indexing means.

A push button device including a device for adjusting the angular orientation of the push button head with respect to the watch case, wherein the angular orientation adjustment device includes a friction ring disposed concentrically around the central shaft inside the tube, the friction ring rotates integrally with the central shaft and is free in translation with respect to the central shaft, the friction ring includes an external friction surface in friction contact with an internal wall of the tube, and wherein the central shaft includes a device for actuating the latter in rotation, making it possible to pivot the push button against the frictional forces generated by the friction ring, in order to adjust the angular orientation of the push button head.

A device includes a case having a case sidewall defining a circular receiver having a receiving opening and a central axis. A device body, which is waterproof in one or more applications, includes a sidewall defining a receiving aperture. A crown stem includes a push button disposed within a duct of a threaded bushing and one or more O-rings disposed about the actuation stem to allow translation of the actuation stem in the duct while preventing liquids from passing through the duct. The crown stem inserts through the aperture in the case so that the threaded bushing can hermetically seal the receiving aperture when the device body is inserted into the circular receiver to prevent the liquids from entering the receiving aperture.

A device includes a case having a case sidewall defining a circular receiver having a receiving opening and a central axis. A device body, which is waterproof in one or more applications, includes a sidewall defining a receiving aperture. A crown stem includes a push button disposed within a duct of a threaded bushing and one or more O-rings disposed about the actuation stem to allow translation of the actuation stem in the duct while preventing liquids from passing through the duct. The crown stem inserts through the aperture in the case so that the threaded bushing can hermetically seal the receiving aperture when the device body is inserted into the circular receiver to prevent the liquids from entering the receiving aperture.

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.

An automatic safety valve for a timepiece, especially for a diving watch. The valve includes a valve head, a tube designed to be secured in a case of the timepiece, and an evacuation channel arranged so as to be in fluidic communication with the inside of the case when the safety valve is in an open configuration so as to evacuate an excess of fluid. The safety valve further includes a pressure regulator arranged inside the evacuation channel to maintain the outlet speed of the fluid.

An automatic safety valve for a timepiece, especially for a diving watch. The valve includes a valve head, a tube designed to be secured in a case of the timepiece, and an evacuation channel arranged so as to be in fluidic communication with the inside of the case when the safety valve is in an open configuration so as to evacuate an excess of fluid. The safety valve further includes a pressure regulator arranged inside the evacuation channel to maintain the outlet speed of the fluid.

The invention relates to a crown head for a timepiece, comprising a cap, a tube which is designed to be secured in a case of the timepiece, and a central pipe which is designed to be engaged with the tube, the central pipe and the cap forming an assembly which can be placed in different axial positions relative to the tube, the crown head also comprising a safety valve comprising a discharge channel which is designed to be able to be in fluid communication with the inside of the case when the valve is in an open configuration, in order to discharge excess fluid, the said safety valve also comprising a piston fitted inside the central pipe and an elastic member designed to cooperate with the piston, which is configured to be displaced axially according to the pressure variations inside the case, the crown head also comprising blocking means which prevent separation of the cap and the tube. The blocking means are in the form of a shoulder arranged on the inner wall of the tube, and comprise a support surface against which part of the piston can abut, and in the form of a rim which is provided at the base of the central pipe, and is designed to abut against a shoulder provided on the piston.

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.

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.