Abstract: A horological mechanism (110), notably a horological movement or chronograph module, including a couching chain (100) having an epicycloidal train (31, 32, 33, 34) including a first sun wheel (33) fixed to the frame.

Abstract: Device (300; 200) for displaying the time, comprising a time-display member (A1, A2) and a switchover mechanism (100) allowing the time-display member to switch between a first time zone and a second time zone. This switchover mechanism comprises: a first heart piece (3) capable of rotating; a first lever (1) having a first end (1a) designed to collaborate with the first heart piece (3) with a view to causing the display member (A1, A2) to indicate the time in the first time zone; a second lever (2; 42) designed to cause the display member (A1, A2) to indicate the time of the second time zone; a two-position selector member (5) collaborating with the first lever (1), and a control member (P) allowing selection of the first or the second time zone for display. The two-position selector member (5) is designed to collaborate directly with a second end (1b) of the first lever (1).

Abstract: Rotary bezel device (11L) for a timepiece (110), the device comprising a first rotary ring (B1), a second rotary ring (B2) and a first mechanical-connection element (C1) allowing the first rotary ring and the second rotary ring to be kinematically connected.

Abstract: The invention relates to a watch with a rigid casing-up, comprising: a middle (1); a bottom (2); a movement (3, 3bis, 3ter, 3quater, 41); and a casing-up ring (4, 4bis, 4ter, 42) in contact with the middle (1). The casing-up ring (4, 4bis, 4ter, 42) has an inner peripheral face (8, 17) and the movement (3, 3bis, 3ter, 3quater, 41) is secured to an outer peripheral face (7, 13, 18, 18bis), said inner (8, 17) and outer (7, 13, 1, 18bis) peripheral faces being in contact with each other in the Z and Z? regions thereof. Said watch is characterized in that it also comprises a tightening element (5, 5bis) provided for exerting pressure on the casing-up ring (4, 4bis, 4ter, 42) or the movement (3quater). The invention also relates to a method for casing-up such a watch.

Abstract: A device (100; 200) for resetting to a predetermined position an indicator member (2, 13; 22) indicative of a parameter connected with time, notably a “flyback” device, the indicator member being kinematically linked to a drive mobile (15; 35), the device comprising an energy accumulator (9) and a return element (1; 21) for returning the indicator member indicative of the parameter connected with time to the predetermined position, the return element being powered by energy from the accumulator, the energy being supplied to the energy accumulator by a user via a control member (4) for resetting to the predetermined position, the control member being able to be manipulated by the user.

Abstract: Rotary bezel device (11L) for a timepiece (110), the device comprising a first rotary ring (B1), a second rotary ring (B2) and a first mechanical-connection element (C1) allowing the first rotary ring and the second rotary ring to be kinematically connected.

Abstract: This watch case comprises a middle (1), a tube (3, 23), which is secured to the middle (1) and is provided with a thread, a control crown (C) which is provided with a thread screwed onto the tube (3, 23), the control crown (C) having an external part (10, 20) that has a distinctive mark (S) that is visible from the outside and an internal part (2, 24) housed inside the external part (10, 20) and clamping means (11) for axially holding said external part (10, 20) and said internal part (2, 24) in an angular position determined with respect to the longitudinal axis of said tube. The internal part (2, 24) has first angular indexing means (2a, 24a), the external part (10, 20) having second angular indexing means (10a, 20a), these indexing means being shaped so as to engage axially in one another.

Abstract: A watch case includes a middle (2, 24, 34), one opening of which is closed by a bezel (8, 18, 28) and/or a crystal (1, 11, 21), or by a back (40). An element for closing the opening is connected to the middle by a resilient metal member (3, 23, 33) having a recessed cross-section defined by the profile of a non-rectilinear wall having a constant thickness, whose ends (3a, 3b) are connected to the periphery of the closing element (1, 11, 21, 18), respectively. The profile of the non-rectilinear wall defines at least one annular fold having an orientation parallel to the plane of the opening, the fold being formed by a curvature whose arc defines an angle of between >90° and 180°, so as to impart to the closing member (1, 11, 21, 18) a freedom of movement relative to the plane of the opening.

Abstract: Device (300; 200) for displaying the time, comprising a time-display member (A1, A2) and a switchover mechanism (100) allowing the time-display member to switch between a first time zone and a second time zone. This switchover mechanism comprises: a first heart piece (3) capable of rotating; a first lever (1) having a first end (1a) designed to collaborate with the first heart piece (3) with a view to causing the display member (A1, A2) to indicate the time in the first time zone; a second lever (2; 42) designed to cause the display member (A1, A2) to indicate the time of the second time zone; a two-position selector member (5) collaborating with the first lever (1), and a control member (P) allowing selection of the first or the second time zone for display. The two-position selector member (5) is designed to collaborate directly with a second end (1b) of the first lever (1).

Abstract: The invention relates to a watch with a rigid casing-up, comprising: a middle (1); a bottom (2); a movement (3, 3bis, 3ter, 3quater, 41); and a casing-up ring (4, 4bis, 4ter, 42) in contact with the middle (1). The casing-up ring (4, 4bis, 4ter, 42) has an inner peripheral face (8, 17) and the movement (3, 3bis, 3ter, 3quater, 41) is secured to an outer peripheral face (7, 13, 18, 18bis), said inner (8, 17) and outer (7, 13, 1, 18bis) peripheral faces being in contact with each other in the Z and Z? regions thereof. Said watch is characterized in that it also comprises a tightening element (5, 5bis) provided for exerting pressure on the casing-up ring (4, 4bis, 4ter, 42) or the movement (3quater). The invention also relates to a method for casing-up such a watch.

Abstract: This watch case comprises a middle (1), a tube (3, 23), which is secured to the middle (1) and is provided with a thread, a control crown (C) which is provided with a thread screwed onto the tube (3, 23), the control crown (C) having an external part (10, 20) that has a distinctive mark (S) that is visible from the outside and an internal part (2, 24) housed inside the external part (10, 20) and clamping means (11) for axially holding said external part (10, 20) and said internal part (2, 24) in an angular position determined with respect to the longitudinal axis of said tube. The internal part (2, 24) has first angular indexing means (2a, 24a), the external part (10, 20) having second angular indexing means (10a, 20a), these indexing means being shaped so as to engage axially in one another.

Abstract: A device (100; 200) for resetting to a predetermined position an indicator member (2, 13; 22) indicative of a parameter connected with time, notably a “flyback” device, the indicator member being kinematically linked to a drive mobile (15; 35), the device comprising an energy accumulator (9) and a return element (1; 21) for returning the indicator member indicative of the parameter connected with time to the predetermined position, the return element being powered by energy from the accumulator, the energy being supplied to the energy accumulator by a user via a control member (4) for resetting to the predetermined position, the control member being able to be manipulated by the user.

Abstract: The invention relates to a watch case including a middle (2, 24, 34), one opening of which is closed by a bezel (8, 18, 28) and/or a crystal (1, 11, 21), or by a back (40). At least one of the elements for closing the opening is connected to the middle by a resilient metal member (3, 23, 33) having a recessed cross-section defined by the profile of a non-rectilinear wall having a constant thickness and the ends (3a, 3b) of which are connected to the periphery of said closing element (1, 11, 21, 18) of said middle (2, 24, 34), respectively. The profile of said non-rectilinear wall defines at least one annular fold having an orientation parallel to the plane of said opening, said fold being formed by a curvature, the arc of which defines an angle of between >90° and 180°, so as to impart to said closing member (1, 11, 21, 18) a freedom of movement relative to the plane of the opening.