Omega SA

A rotating resonator mechanism ( 60 ) including a flexible guide ( 5 ) and an oscillating mass ( 2 ), the flexible guide ( 5 ) including two main flexible strips ( 4, 6 ) and a rigid portion ( 7 ). The flexible strips are joined to the rigid portion and the oscillating mass. An adjustment means adjusts the stiffness of the resonator mechanism, and includes a flexible element connected to the rigid portion and to a fixed support ( 11 ), so that the flexible guide ( 5 ) is suspended by the flexible element ( 12 ), the flexible guide ( 5 ) and the flexible element ( 12 ) extending substantially in the same plane so that the oscillating mass ( 2 ) performs a rotating movement about a virtual pivot. The adjustment means also includes pre-stressing means ( 15 ) to apply a variable force or torque on the flexible element ( 12 ) or the flexible guide ( 5 ), to vary the stiffness of the flexible element ( 12 ).

A method for testing the display of a watch head, in which the watch head is kept running continuously for 24 hours, an initial optical image of the hands is taken at an initial time with reference to fixed points; at least 24 hours later, at a final time measured on a reference clock, a final optical image of the hands is taken with reference to the fixed points, the positions of the hands at the initial and final times are determined by visual recognition means, the difference between the reference position on the reference clock and the actual position of the hands is calculated, and the value of the measured state deviation is displayed.

A resonant organ ( 100 ) for a striking mechanism ( 200 ) including a gong ( 110 a , 110 b ) attached to a gong holder ( 120 ), wherein the gong ( 110 a , 110 b ) has a notch ( 117 ) in which a stone ( 1 ) is embedded and secured, the stone ( 1 ) including a table ( 3 ) with an impact surface suitable for being struck by a hammer ( 210 a , 210 b ) of the striking mechanism ( 200 ).

A horological calotte ( 200 ) forming a casing for a horological movement ( 400 ) according to a calibre model in a predetermined family. The movement includes a projecting control member ( 410 ) whose distal part ( 411 ) is distant from a movement axis (DM) by a radial value (VR) specific to the model. The calotte includes a ring ( 220 ) specific to the model, which is fitted in a single angular position with a bottom ( 210 ) and a cover ( 230 ) to enclose the movement ( 400 ). Its outer shape is identical for each calibre, with reference shoulders ( 240 ) defining a calotte axis (DC). The ring offsets the movement axis relative to the calotte axis in the radial direction (DR) of the control member ( 410 ), by a value such that the distal part ( 411 ) is distant from the calotte axis by a predefined value (VP) identical for all calibres of the family.

A mechanical watch or measurement instrument having metallic parts, wherein each part of the mechanical watch mechanism has a relative magnetic permeability of less than 1.01.

A timepiece ( 1 ) including a horological movement ( 100 ) housed in a case, said horological movement ( 100 ) including a going train ( 5 ) dedicated to time division and a chronograph mechanism ( 200 ) including a chronograph train ( 230 ) configured to be coupled to the going train ( 5 ) on demand via a chronograph start/stop control device ( 210 ). The chronograph mechanism ( 200 ) includes a status indicator device ( 50 ) fixed to a coordination member ( 18 ) for rotation therewith, the status indicator device ( 50 ) including a first portion presenting a first item of information and a second portion presenting a second item of information, which is different from the first item of information, each portion of the status indicator ( 50 ) being positioned alternately facing an aperture in a mask comprised in the timepiece ( 1 ), each time the chronograph start/stop control device ( 210 ) is operated.

A timepiece ( 1 ) including a middle ( 110 ) and an interchangeable bezel ( 200 ) fastened to said middle ( 110 ) by relative rotation of the bezel ( 200 ) relative to the middle ( 110 ), about a central axis (B), between an interlocking position and a locked position, by a bayonet fastening device ( 300 ), said bayonet fastening device ( 300 ) including first fastening elements ( 300 a ) formed on the middle ( 110 ) and second complementary fastening elements ( 300 b ) formed on the bezel ( 200 ), wherein the bayonet fastening device ( 300 ) includes a mechanical coding system ( 210, 116 ) for defining a single position in which said bezel ( 200 ) can be interlocked with the middle ( 110 ).

A safety device for a striking-work including a first wheel, a second wheel and an actuating member. The first wheel is meshed which drives it in rotation about a shaft and it includes an abutment member. The second wheel is also in rotation about the shaft and is in contact with the abutment member. The second wheel includes a portion configured for an actuating member to act on the intermediate portion so as to move the second wheel.