A watch case including a middle defining a peripheral track; a rotating bezel; a toothed crown; a structure for detachably fastening the bezel on the middle with the possibility of axial clearance, the fastening structure includes a band supporting radially projecting fins, each capable of engaging with a bayonet formed in the middle; a coupling system including a male part and a female part, one of which is integral with the bezel and the other one of which is integral with the fastening structure, with this coupling system being able to adopt a decoupling configuration, in which the male part and the female part are decoupled, and a coupling configuration, in which the male part and the female part are coupled.

A rotating-bezel system intended to be mounted for rotation on a watch-case middle inside which a horological movement is housed, including a ceramic rotating bezel, an annular ring intended to cooperate with an element angularly secured to the middle, and an annular joint for connection between the rotating bezel and the annular ring, the annular ring being placed in the rotating bezel. According to the invention, the system further includes at least one element for locking the annular ring on the rotating bezel, and at least one element being configured to lock any relative rotation between the annular ring and the bezel and to thus angularly secure the assembly formed by the ring and the bezel.

A watch whose watch case includes a case middle and a rotating bezel provided with a bezel locking system. The system includes a rotating crown secured to an arbor, the arbor being arranged inside a radial hole in the case middle. By rotating the crown, the user can screw or unscrew the arbor with respect to the hole. The arbor includes a frustoconical section which interacts with a pin mounted perpendicularly to the arbor and returned towards the arbor by a spring. Screwing the arbor into the hole will cause the frustoconical section to push the pin into a receiving space provided on the lower surface of the bezel, which locks the bezel. Unscrewing the arbor automatically releases the pin from the receiving space by the return force exerted by the spring. The crown can include a helium valve mechanism.

A case for a timepiece having a middle, a rotating bezel, and a device for blocking the rotating bezel, the device including an end-link, mounted mobile relative to the middle between a first position capable of preventing the rotation of the rotating bezel and a second position capable of allowing the rotation of the rotating bezel, the end-link including an action and/or gripping portion arranged so as to allow the wearer of the timepiece to move the end-link relative to the middle, while wearing the timepiece.

A back (1) for a watch case (50), the back (1) including a first element (10) arranged so as to be screwed onto the watch case (50), and a second element (20) including an end face bearing a pattern (M), the second element (20) being mounted such that it can move in rotation about an axis (C) passing through the centre of the case (50), wherein the second element (20) has a brake arranged so as to hold same relative to the first element (10) in different angular positions about the rotational axis (C), the brake being disposed between the first and second elements (10, 20).

A watch spring (1) for a first component (2), more particularly for a bezel or for a case middle or for a case back, intended for the detent of the first component (2) relative to a second component (3), the spring (1) comprising at least one first connecting element (10a) intended to interact with at least one second connecting element (20b) provided on a component (2b) of the first component so as to connect the spring and the component, the at least one first connecting element comprising at least one elastic connecting arm (10a) extending in a first direction (D1), the at least one first connecting element being intended to receive a force (F) for driving the first component relative to the second component in the first direction or substantially in the first direction.

An annular rotating bezel system to be rotatably mounted on a case middle of a watch case inside which is housed a timepiece movement which extends in a plane, including a rotating bezel, an annular holding ring, a toothed ring, and a spring ring which extends in a plane in which it is capable of deforming elastically along a radius, the spring ring cooperating elastically with the toothed ring, the toothed ring and the spring ring being held in an axial direction perpendicular to the plane of the movement in the bezel by the annular holding ring, either the toothed ring or the spring ring being arranged to be angularly joined to the rotating bezel, and the other being arranged to be angularly joined to the case middle, wherein the spring ring has a thinned portion to increase the flexibility of the spring ring in its plane, the thinned portion having a tooth elastically and radially meshed with the toothed ring.

A watch whose watch case includes a case middle and a rotating bezel provided with a bezel locking system. The system includes a rotating crown secured to an arbor, the arbor being arranged inside a radial hole in the case middle. By rotating the crown, the user can screw or unscrew the arbor with respect to the hole. The arbor includes a frustoconical section which interacts with a pin mounted perpendicularly to the arbor and returned towards the arbor by a spring. Screwing the arbor into the hole will cause the frustoconical section to push the pin into a receiving space provided on the lower surface of the bezel, which locks the bezel. Unscrewing the arbor automatically releases the pin from the receiving space by the return force exerted by the spring. The crown can include a helium valve mechanism.

Frame comprising a case body (3) and a glass (13) rotatably mounted on said case body, in which at least one interior annular channel (26) is arranged between the glass and the case body and comprising at least one holding means (32) of the glass on the case body and, between the glass and the case body, a non-return means (35, 38), said means being arranged at least partially in said interior annular channel (26), in which frame the glass has at least one through passage (39), left free, for access to said interior annular channel (26), providing permanent communication of said channel with the exterior.

A watch case including a middle defining a peripheral track; a rotating bezel; a toothed crown; a structure for detachably fastening the bezel on the middle with the possibility of axial clearance, the fastening structure includes a band supporting radially projecting fins, each capable of engaging with a bayonet formed in the middle; a coupling system including a male part and a female part, one of which is integral with the bezel and the other one of which is integral with the fastening structure, with this coupling system being able to adopt a decoupling configuration, in which the male part and the female part are decoupled, and a coupling configuration, in which the male part and the female part are coupled.