ESCAPEMENT MECHANISM IN PARTICULAR FOR A TIMEPIECE MOVEMENT

The constant force escapement mechanism in particular for a timepiece movement including a spring balance and an escapement gear connected to a barrel by a going train includes a constant force auxiliary spring (). It includes an impulsion lever () co-operating on the one hand with the escapement gear () and on the other hand with control members fixed to the arbor of the spring balance. The constant force auxiliary spring () is fixed at one of its ends on a part of the frame of the movement and at its other end to the impulsion lever (). 11181118. Constant force escapement mechanism , in particular for a timepiece movement comprising a spring balance and an escapement gear connected to a barrel by a going train; the escapement mechanism comprising a constant force auxiliary spring () , characterised in that the escapement mechanism comprises an impulsion lever () pivoted on one part of the frame of the movement co-operating on the one hand with the escapement gear () and on the other hand with control members fixed to the arbor of the spring balance; and in that the constant force auxiliary spring () is fixed at one of its ends on a part of the frame of the movement and that its other end is angularly fixed to the impulsion lever ().28. Mechanism as claimed in claim 1 , characterised in that the impulsion lever () is mounted on the movement so as to be angularly and axially displaceable with respect to the frame of the timepiece movement.311. Timepiece movement as claimed in characterised in that the constant force auxiliary spring () is a helical spring.4108. Timepiece movement as claimed in claim 3 , characterised in that the inner end of this helical spring is fixed to a collet () which is angularly fixed to the impulsion lever () whilst its outer end is fixed on a part of the frame of the timepiece movement.59. Timepiece movement as claimed in claim 4 , characterised in that the axle of rotation of the impulsion lever forms a lock axle () co-operating with the ...

ESCAPEMENT MECHANISM IN PARTICULAR FOR A TIMEPIECE MOVEMENT

A timepiece movement includes an escapement mobile connected to a barrel by a going train and a spring balance as well as an escapement mechanism () including an impulse lever () and at least one regulating member (). The impulse lever () and the regulating member (), which co-operate with the escapement mobile, are controlled by control members () supported on the axle of the balance. Between positions in which they co-operate with the escapement mobile () and positions in which they do not co-operate with the escapement mobile, the impulse lever () and the regulating member () move in two different planes forming an angle therebetween. 1189. Timepiece movement comprising an escapement mobile connected to a barrel by a going train and a spring balance as well as an escapement mechanism () comprising an impulse lever () and at least one regulating member ();{'b': 8', '9', '6', '1', '6', '2', '7', '1, 'characterised in that the impulse lever () and the regulating member () are controlled by control members (., ., .) supported on the axle of the balance;'}{'b': 8', '9', '1', '1', '8', '9, 'in that the impulse lever () and the regulating member () co-operate with the escapement mobile (); and in that between positions in which they co-operate with the escapement mobile () and positions in which they do not co-operate with the escapement mobile, the impulse lever () and the regulating member () move in two different planes forming an angle therebetween.'}21118. Timepiece movement as claimed in claim 1 , characterised in that the escapement mechanism () is a constant force escapement mechanism comprising an auxiliary spring () claim 1 , one end of which is fixedly attached to the impulse lever ().3118. Timepiece movement as claimed in claim 2 , characterised in that the auxiliary spring () is a helical spring claim 2 , and in that the inner end of this helical spring is fixed to a collet of the impulse lever () whilst its outer end is fixed on a part of the frame of the ...

Going train for a timepiece

The going train for a timepiece has a mechanical movement having a frame ( 0 ), a barrel ( 1 ) and an escapement pinion ( 5 ) which are connected by the going train. This going train has a stepping-up epicyclic train having a first planet gear ( 6 ) with a constant rotational speed during normal operation of the movement, a second planet gear ( 7 ) kinematically connected to the escapement pinion ( 5 ), at least one satellite gear ( 9 ) each meshing with the first planet gear ( 6 ) and the second planet gear ( 7 ), and a satellite carrier ( 8 ) kinematically connected to the barrel ( 1 ) and carrying the satellite gear(s) ( 9 ).

METHOD FOR PLACING A WATCH CASE UNDER A PROTECTIVE ATMOSPHERE

A method of placing under a protective atmosphere a watch case fitted with its movement, includes: installing the watch case in the housing of a support including a unit for holding the watch and a unit for guiding an actuator acting on a part of the case; introducing the support into a flexible pouch; installing the support in the open pouch in a device for imposing a protective atmosphere; reducing the pressure within such device; closing the pouch containing the support; extracting the support from the sealed pouch of the device for imposing a protective atmosphere; closing the watch case by acting on the actuator via the outside of the pouch in order that it displaces a part of the watch according to the guide unit in order to close the watch; opening the pouch and separation of the actuator from the part of the case on which it acts. 15. Method for placing under a protective atmosphere a watch case () fitted with its movement , comprising the following steps:{'b': 2', '1', '3', '4', '13', '7', '12, 'installation of the watch case, which is not completely closed, in the housing () of a support () comprising means () for holding the watch as well as means (, ) for guiding an actuator (, ) acting on a part of the case;'}{'b': 1', '10, 'introduction of the support () into a flexible pouch ();'}{'b': 1', '10, 'installation of the support () in the open pouch () in a device for imposing a protective atmosphere;'}reduction of the pressure within the device for imposing a protective atmosphere;{'b': 10', '1, 'closure of the pouch () containing the support ();'}{'b': 1', '10, 'extraction of the support () from the sealed pouch () of the device for imposing a protective atmosphere;'}{'b': 7', '12', '10', '4', '13, 'closure of the watch case by acting on the actuator (, ) via the outside of the pouch () in order that it displaces a part of the watch according to the guide means (, ) in order to close the watch;'}{'b': 10', '7', '12, 'opening of the pouch () and separation ...

Method for adjusting the chronometry of a timepiece movement intended to operate in a low-pressure atmosphere

The method for regulating the time-keeping of a mechanical timepiece movement intended to operate in a low-pressure atmosphere, comprises the following successive steps: 1. placing the movement in a low-pressure atmosphere pre-established for normal operation of the movement, 2. measuring the gain or recoil (typically a gain +ΔP) of the time-keeping precision of the movement at this low pressure, 3. returning the movement to ambient atmospheric pressure, 4. regulating the movement to compensate for the previously measured gain or recoil (typically by performing a recoil −ΔP) in low-pressure operation, 5. returning the movement to atmosphere, at the low pressure pre-established for normal operation of the movement.

Method for adapting a timepiece movement provided to operate in ambient atmospheric pressure so as to operate in a low-pressure atmosphere

The method for adapting a timepiece movement provided to operate at ambient atmospheric pressure so as to operate in a low-pressure atmosphere comprises the following steps: 1. measuring the quality factor of the movement at atmospheric pressure, 2. measuring the quality factor of the movement at a predetermined low pressure corresponding to the operating pressure intended for the modified movement, 3. calculating the energy gain between the two measurements, 4. adapting the dimensions of the movement based on this energy gain, in particular by modifying at least one of the following elements of the movement: the reduction ratio of the finishing going train, the torque of the barrel, the size of the barrel and the inertia of the balance.

DIRECTIONAL VALVE WITH TRIP THRESHOLD AND DEVICE PROVIDED WITH SUCH A VALVE

Clapet directionnel à seuil de déclenchement (101) comprenant un passage étagé (111, 112) ayant en entrée un passage amont (111) de petite section débouchant dans la chambre amont (A) et un passage aval (112) de grand diamètre débouchant dans la chambre aval (B).Ces deux passages de diamètres différents formant entre eux un épaulement (113) dans lequel débouche le passage amont (111) en y réalisant le siège de clapet (114) avec lequel coopère un organe d'obturation (115). Un passage étranglé (110) relie l'intérieur du clapet (1), en aval du siège (14) à la chambre aval,L'organe d'obturation (115) est magnétique et un aimant (116) est prévu au niveau du siège de clapet (114) pour attirer l'organe d'obturation (115) contre le siège de clapet. Directional valve with tripping threshold (101) comprising a stepped passage (111, 112) having at input an upstream passage (111) of small section opening into the upstream chamber (A) and a downstream passage (112) of large diameter opening into the downstream chamber (B). These two passages of different diameters forming between them a shoulder (113) into which the upstream passage (111) emerges, forming therein the valve seat (114) with which a closure member (115 ). A constricted passage (110) connects the interior of the valve (1), downstream of the seat (14) to the downstream chamber, the closure member (115) is magnetic and a magnet (116) is provided at the level of the valve seat (114) to attract the shutter member (115) against the valve seat.

TRIP THRESHOLD DIRECTIONAL VALVE AND DEVICE EQUIPPED WITH SUCH VALVE

Magnetic check valve for a door stop

Válvula direccional de umbral de desenclavamiento y dispositivo equipado de tal válvula. Válvula direccional de umbral de desenclavamiento (101) comprendiendo un pasaje escalonado (111, 112) teniendo en entrada un pasaje hacia arriba (111) de pequeña sección desembocando en la cámara superior (A) y un pasaje inferior (112) de gran diámetro desembocando en la cámara inferior (B). Estos dos pasajes de diámetros diferentes forman entre ellos un saliente (113) en el cual desemboca el pasaje superior (111) realizando el asiento de la válvula (114) con el cual coopera un órgano de obturación (115). Un pasaje estrangulado (110) conecta al interior de la válvula (1), en la parte inferior del asiento (14) a la cámara inferior. El órgano de obturación (115) está magnetizado y un imán (116) está provisto al nivel del asiento de la válvula (114) para atraer al órgano de obturación (115) contra el asiento de la válvula.

DIRECTIONAL VALVE WITH TRIP THRESHOLD AND DEVICE PROVIDED WITH SUCH A VALVE

HYDRAULIC DOOR STOP

The door stop comprises a fluid circuit with a cylinder (1) housing a piston (2), a by-pass circuit (3) connecting the two chambers (11,12) and a pivoting flap (332) which moves between a closed position (I0) which prevents flow of fluid between the chambers and open positions (I1, I2). A calibrated catch (34) is attached to the flap and retains the flap in the closed position until a predetermined pressure difference is exceeded due to a force applied to the door which moves the flap into an open position and allows fluid passage between the two chambers. When the force is removed, a spring bias (36) returns the flap to the closed position and prevents the door from further movement.

Watch case, has bezel, retaining ring and unit to define unstable positions of bezel such that bezel is displaced with respect to ring till bezel is brought back to disassembling position only when bezel is blocked on one unstable position

The case has a retaining ring (17) for axially retaining a rotating bezel (2) on a middle (1). The bezel, the ring and an indexing unit define unstable angular positions of the bezel on the middle such that the bezel is displaced with respect to the ring till the bezel is brought back to a disassembling position, by a sequence of axial movement in direction of a case bottom and rotary movement, only when the bezel is blocked on one of the unstable positions. The bezel is released axially from the retaining unit for being removed from the middle, in the disassembling position. The indexing unit is formed of a toothed ring (12), radial indexing pins (11), teeth (13) and a corrugated lock washer (14). An independent claim is also included for a method for disassembling a rotating bezel from a watch case.

DIRECTIONAL VALVE THRESHOLD AND DEVICE EQUIPPED WITH THIS VALVE

Procede d'adaptation d'un mouvement d'horlogerie prevu pour fonctionner a la pression atmospherique ambiante a un fonctionnement dans une atmosphere a basse pression

Le procédé d'adaptation d'un mouvement d'horlogerie prévu pour fonctionner à pression atmosphérique ambiante à un fonctionnement sous atmosphère à une basse pression, comprend les étapes suivantes : 1. mesurer le facteur de qualité du mouvement à une pression atmosphérique, 2. mesurer le facteur de qualité du mouvement à une pression basse prédéterminée correspondant à la pression de fonctionnement prévue pour le mouvement modifié, 3. calculer le gain énergétique entre les deux mesures, 4. adapter le dimensionnement du mouvement en fonction de ce gain énergétique notamment en modifiant au moins un des éléments suivants du mouvement: le rapport de réduction du rouage de finissage, le couple du barillet, l'encombrement du barillet, et l'inertie du balancier.

Procédé de réglage de la chronométrie d'un mouvement d'horlogerie destiné à fonctionner dans une atmosphère à basse pression

Le procédé de réglage de la chronométrie d'un mouvement d'horlogerie mécanique destiné à fonctionner dans une atmosphère, à basse pression, comprend les opérations successives suivantes : 1.mettre le mouvement en atmosphère, à la basse pression préétablie pour le fonctionnement normal du mouvement, 2. mesurer l'avance ou le recul (typiquement en avance +ΔΡ) de la précision chronométrique du mouvement à cette basse pression. 3. remettre le mouvement à la pression atmosphérique ambiante, 4. régler le mouvement pour compenser l'avance ou le recul mesuré précédemment (typiquement en effectuant un recul -ΔΡ) en fonctionnement sous basse pression, 5. remettre le mouvement en atmosphère, à la basse pression préétablie pour le fonctionnement normal du mouvement.

Timbre, dispositif sonore comprenant un tel timbre et mouvement de montre comprenant un tel dispositif sonore.

L’invention concerne un timbre (1) pour un dispositif sonore d’une montre comprenant au moins un marteau; le timbre (1) comprenant une partie longitudinale (2) possédant une section de dimension variable, de manière à produire au moins deux sons de hauteurs différentes lorsque ledit au moins un marteau percute le timbre à au moins une première position (7) et une deuxième position (8) le long de la partie longitudinale (2). L’invention concerne également un dispositif sonore comprenant un tel timbre et un mouvement de montre comprenant un tel dispositif sonore.

Method for adapting a timepiece movement provided to operate in ambient atmospheric pressure so as to operate in a low-pressure atmosphere

A method for adapting a timepiece movement includes measuring a loss of energy for each free oscillation of the balance at atmospheric pressure; measuring the loss of energy for each free oscillation at a given low pressure corresponding to a working pressure intended for a modified movement; using i) the measured loss of energy at atmospheric pressure and ii) the measured loss of energy at the given low pressure, determining a percentage of energy gain of the balance between respective i) measurements of the measured loss of energy at atmospheric pressure and ii) measurements of the measured loss of energy at the given low pressure; and reducing a torque delivered to the escapement by a value corresponding to the determined percentage of energy gain.

Method for placing a watch case under a protective atmosphere

A method of placing under a protective atmosphere a watch case fitted with its movement, includes: installing the watch case in the housing of a support including a unit for holding the watch and a unit for guiding an actuator acting on a part of the case; introducing the support into a flexible pouch; installing the support in the open pouch in a device for imposing a protective atmosphere; reducing the pressure within such device; closing the pouch containing the support; extracting the support from the sealed pouch of the device for imposing a protective atmosphere; closing the watch case by acting on the actuator via the outside of the pouch in order that it displaces a part of the watch according to the guide unit in order to close the watch; opening the pouch and separation of the actuator from the part of the case on which it acts.