Abstract: A method for frequency tuning a set of plates of a watch. The plates are disposed one above the other forming a watch dial with a space defined between the plates. A mechanical shock to the set of plates is generated, and the vibration frequency of each plate is checked. The vibration frequency of at least one of the plates is matched if different from the other plate so as to obtain an identical vibration frequency for each plate in order to tune the plates at least according to the first vibration eigenmode so as to avoid any contact between the plates as a result of any mechanical shock.

Abstract: A musical comb for a striking mechanism of a timepiece includes several tines connected to a heel for securing the comb inside the timepiece. The musical comb further includes grooves in the heel each extending into the extension of each space between the adjacent tines in order to eliminate any dissonance during actuation of the tines.

Abstract: A musical watch case including a case middle with surfaces for receiving and supporting a cover with a bezel, and a casing ring, and supporting at least one gong with a resonant part distinct from the walls of the case middle, which supports the cover via distinct and remote lugs included in the bezel or the case middle and which are arranged to allow vibration of the cover, and form, with at least one gasket, the only direct contacts between the bezel and the case middle, which includes, around an annular wall defining an inner chamber around the casing ring, and around all the other these lugs, a resonator ring integral with the case middle distant at every point from the bezel and from the lugs, forming with this wall an external radiating cavity.

Abstract: A musical watch case including a case middle with surfaces receiving and supporting a cover with a bezel, or a case back, and a casing ring, the case including at least one gong fixed to the case middle with a resonant part distinct from the walls of the case middle, which supports the cover via lugs included in the bezel or the case middle and which are arranged to allow vibration of the cover assembly at frequencies from 4 kHz to 6 kHz, these distinct and distant lugs forming, with at least one gasket, the only direct contacts between the bezel and the case middle, between which each lug includes a thin, elastic, median strip, more flexible than its solid distal end, and of smaller thickness than the smallest cross-section of these gongs.

Abstract: A method for tuning a gong of a striking watch. The gong is fastened at one end to a gong holder, which can be mounted in a watch case. The gong is struck by a hammer to be vibrated on a support of the measuring instrument to determine by a fast Fourier transform frequency peaks in a band of audible frequencies. A comparison in a first natural mode of a vibration frequency in the plane XY with a vibration frequency outside the plane Z is performed and a ratio calculation r=|f1p?f1h|/f1p, where f1p is the vibration frequency in the plane XY, and f1h is the vibration frequency outside the plane Z. If the ratio r is less than or equal to a desired value of 0.006, the gong is tuned. If it is greater, the method is repeated until the ratio value is achieved.

Abstract: The gong is made with a wire or a strip having an atypical shape for a watch striking mechanism. The gong includes a rectilinear part connected to a curved part. The rectilinear part and/or the curved part are connected to the same gong-carrier. The gong includes several notches made at defined geometric points on a portion of the length of the gong to adapt the natural vibration frequencies within an audible range between 1 kHz and 5 kHz, so that the sound produced by the vibrating gong is harmonious.

Abstract: A musical comb for a striking mechanism of a timepiece includes several tines connected to a heel for securing the comb inside the timepiece. The musical comb further includes grooves in the heel each extending into the extension of each space between the adjacent tines in order to eliminate any dissonance during actuation of the tines.

Abstract: A musical watch case including a case middle with surfaces receiving and supporting a cover with a bezel, or a case back, and a casing ring, the case including at least one gong fixed to the case middle with a resonant part distinct from the walls of the case middle, which supports the cover via lugs included in the bezel or the case middle and which are arranged to allow vibration of the cover assembly at frequencies from 4 kHz to 6 kHz, these distinct and distant lugs forming, with at least one gasket, the only direct contacts between the bezel and the case middle, between which each lug includes a thin, elastic, median strip, more flexible than its solid distal end, and of smaller thickness than the smallest cross-section of these gongs.

Abstract: A musical watch case including a case middle with surfaces for receiving and supporting a cover with a bezel, and a casing ring, and supporting at least one gong with a resonant part distinct from the walls of the case middle, which supports the cover via distinct and remote lugs included in the bezel or the case middle and which are arranged to allow vibration of the cover, and form, with at least one gasket, the only direct contacts between the bezel and the case middle, which includes, around an annular wall defining an inner chamber around the casing ring, and around all the other these lugs, a resonator ring integral with the case middle distant at every point from the bezel and from the lugs, forming with this wall an external radiating cavity.

Abstract: A musical timepiece includes a gong fastened to a structure or a resonator of a watch case, the resonator rigidly assembled to the structure around a chamber, by lugs allowing vibration of the resonator within a determined frequency range, the chamber enclosing a sealing element forming with the lugs the only mechanical connection between the structure and the resonator. The structure or the resonator includes a groove receiving a gasket in contact with the structure and the resonator The structure structure or the resonator or the sealing element includes a rigid protruding relief portion compressing a gasket in its groove, with a hardness less than 20 Shore A, for minimum damping of the vibration of the resonator.

Abstract: A musical timepiece includes a gong fastened to a structure or a resonator of a watch case, the resonator rigidly assembled to the structure around a chamber, by lugs allowing vibration of the resonator within a determined frequency range, the chamber enclosing a sealing element forming with the lugs the only mechanical connection between the structure and the resonator. The structure or the resonator includes a groove receiving a gasket in contact with the structure and the resonator The structure structure or the resonator or the sealing element includes a rigid protruding relief portion compressing a gasket in its groove, with a hardness less than 20 Shore A, for minimum damping of the vibration of the resonator.

Abstract: The gong is made with a wire or a strip having an atypical shape for a watch striking mechanism. The gong includes a rectilinear part connected to a curved part. The rectilinear part and/or the curved part are connected to the same gong-carrier. The gong includes several notches made at defined geometric points on a portion of the length of the gong to adapt the natural vibration frequencies within an audible range between 1 kHz and 5 kHz, so that the sound produced by the vibrating gong is harmonious.

Abstract: A striking mechanism is for a watch or music box that includes a vibration plate with optimized actuation energy. The striking mechanism includes a plurality of cantilevered strips. These strips are each made of a material of Young's modulus E and of density ? satisfying the inequality: E ? 3 < 0.25 ? ? m ? / ? s . All of the strips (2) each satisfy the relation: ? f , b , 20 ? ? ? ? W ? ( L ) = ( 8 ? U b ) 1 2 ? ( 3.515 4 ? ? ? ? f ) 3 2 ? [ E ( 3 ? ? ) 3 ? ] 1 4 ? L - 3 2 , where b is the width, L the length, ? the travel, f the frequency and U the actuation energy of the strip, U being greater than or equal to 20 microwatts, and the strips (2) are arranged to vibrate between 800 Hz and 4000 Hz.

Abstract: The acoustic radiating membrane is provided to equip a musical watch or a striking watch. The dome-shaped membrane comprises an active central portion, a lateral wall and a peripheral edge portion for holding the membrane in a watch case. The central part is configured in a convex shape or a conical shape and with dimensions devised to amplify a first vibration mode of one or more notes within a frequency range of between 500 Hz and 3.5 kHz.

Abstract: There is provided an acoustic radiating membrane arrangement for a striking or musical watch. The arrangement includes a first membrane arranged superposed on a second membrane. Peripheral edge portions of the two membranes are intended to hold the membranes inside a watch case. The first acoustic radiating membrane is configured to radiate efficiently the frequencies in a first frequency band. The second acoustic radiating membrane is configured to radiate efficiently the frequencies in a second frequency band that is different from the first frequency band. A spacer ring is also disposed between the peripheral edge portions of the first membrane and of the second membrane to define an acoustic cavity.

Abstract: A striking mechanism is for a watch or music box that includes a vibration plate with optimised actuation energy. The striking mechanism includes a plurality of cantilevered strips. These strips are each made of a material of Young's modulus E and of density p satisfying the inequality: E ? 3 < 0.25 ? ? m ? / ? s . All of the strips (2) each satisfy the relation: ? f , b , 20 ? ? ? ? W ? ( L ) = ( 8 ? U b ) 1 2 ? ( 3.515 4 ? ? ? ? f ) 3 2 ? [ E ( 3 ? ? ) 3 ? ] 1 4 ? L - 3 2 , where b is the width, L the length, ? the travel, f the frequency and U the actuation energy of the strip, U being greater than or equal to 20 microwatts, and the strips (2) are arranged to vibrate between 800 Hz and 4000 Hz.

Abstract: Watch bezel for a musical watch, directly carrying a gong or forming a gong, this watch bezel including a toroid receiving a watch crystal, and a thin lug perpendicular to the plane of the toroid including an internal thread for securing to a structure, a case of the musical watch includes a case middle and carries this watch bezel indirectly bearing on a main surface of the case middle with a first O-ring sealing gasket, the case middle and the watch bezel are held securely to each other in a position where, in the free state of the watch bezel and with no excess pressure, the watch bezel is at a distance from the main surface having a value corresponding to a predetermined and non-zero play.

Abstract: A method for improving sound output level of a musical or striking timepiece including at least one vibration generator and vibrating at specific natural frequencies of the generator. The timepiece includes external parts which are modified by integration or addition of at least one acoustic radiator including at least one element vibrating-radiating at a natural frequency of the radiator tuned to at least one of the natural frequencies of the generator. The external parts include at least one acoustic radiator including at least one element vibrating at a natural frequency of the radiator tuned to at least one of the natural frequencies of the generator.

Abstract: The invention relates to a vibration plate for a striking mechanism of musical watches or music boxes. According to the invention, the vibration plate includes at least two parts, joined to each other, manufactured in at least two materials, a first part forming a first set of strips made of a first material so as to produce sounds in a first frequency range, and at least a second part forming a second set of strips made of a second material so as to produce sounds in a second frequency range.

Abstract: The musical or striking watch is provided with an acoustic radiation arrangement. The watch includes a watch case, formed at least of a case middle and a back cover removably fixed to the case middle, and at least one crystal for closing said case. The acoustic radiation arrangement includes a connecting support part fixed in the case back between a back bezel and a back crystal. The back bezel includes several lateral openings. A cavity is defined between the connecting support part and the openings in the back bezel.