Abstract: Mechanical watch movement comprising a mechanical chronograph with a regulator organ for regulating the running of the chronograph, characterized in that the regulator organ of the chronograph is placed in an imaginary circle (A) coaxial to the movement and having a radius (r1) smaller than 50% of the maximum outer radius of the movement.

Abstract: A regulating organ adapted to be integrated into a mechanical watch, comprising a first balance and a first spiral fastened to an axle, and-at least one second balance, wherein the second balance is fastened on the axle of said first balance.

Abstract: The horological movement comprises a regulating device having an oscillation frequency (f) and an escapement for maintaining the oscillations of the regulating device. The escapement comprises an escape wheel having (N) teeth. The frequency (f) is at least equal to about 5 Hz, and the ratio between the number (N) of teeth and the frequency (f) is substantially equal to 5.

Abstract: Platform escapement assembly (1) comprising a balance (3) with a roller (4), a balance spring (5), and escape wheel (6) controlled by a pallet lever (7) cooperating with said roller (4). An escapement bridge (10) comprises, on both sides of a bottom surface (11), first (20) and second (21) spacers respectively comprising first (22) and second (23) bearing surfaces for receiving first (24) and second (25) complementary surfaces of a balance cock (30) on both sides of a top surface (11A), and said top surface (11A) is more flexible in bending than said bottom surface (11), so as to allow mobility, as a result of a perpendicular force applied to said top surface (11A), of said first complementary surface (24) relative to said first bearing surface (22) when said second complementary surface (25) is locked in position on said second bearing (23) surface.

Abstract: Anti-trip mechanism (1) for a timepiece regulating member (100) comprising a balance spring (2) with a strip (20) wound in coils (2), wherein an inner coil (4) is fixed to a collet (6) coaxial to this balance spring (2) relative to a pivot axis (D) and an outer coil (5) is fixed to a hooking element (7). At least one coil (3) of this balance spring (2) includes at least one finger (8) integrally mounted with this coil (3) and moveable without any contact, during the normal extension or contraction of the balance spring (2), in a travel limiting channel (10) comprised in a flange (11) of the anti-trip mechanism (1), and this channel (10) is configured to limit the travel of the finger (8) relative to the pivot axis (D) when the pivoting angle imparted to the collet (6) is greater than a determined nominal value.

Abstract: The horological movement comprises a regulating device having an oscillation frequency (f) and an escapement for maintaining the oscillations of the regulating device. The escapement comprises an escape wheel having (N) teeth. The frequency (f) is at least equal to about 5 Hz, and the ratio between the number (N) of teeth and the frequency (f) is substantially equal to 5.

Abstract: The invention concerns an anti-trip device (1) for an escape mechanism (10) arranged to cooperate with a balance (2) pivoting about a first axis (D1). It includes a pivoting wheel set (5), pivotally moveable about a second axis (D2) parallel to said first axis (D1) and fixed relative to a plate. The pivoting wheel set (5) includes guide means (7) arranged to cooperate with complementary guide means (9) comprised in a roller (3) pivoting integrally with said balance (2). Said complementary guide means (9) includes a cam (90) for moving said pivoting wheel set (5) closer to said first axis (D1) when said balance is pivoting in a first direction (B1) and to move said wheel set away from said first arbour when the balance is pivoting in a second direction (B2) opposite to said first direction (B1). Said guide means (7) includes a fixed finger arranged to cooperate with said cam.

Abstract: A mechanical device for horology, comprising angular reduction means apt to decrease the oscillation of the width of the lever pacing the motion of the gear.

Abstract: An assembly of an axially extending member, made of a first material, in an aperture of a part, made of a second material having no plastic domain. The part includes pierced holes forming an elastic deformation mechanism distributed around the aperture thereof. Further, the member includes an elastically and plastically deformed, radially flared portion that radially grips a wall of the part surrounding the aperture by stressing the elastic deformation mechanism, so as to secure the assembly in a manner that is not destructive for the part. The assembly can be used in the field of timepieces.

Abstract: Anti-trip device (1) for a balance (2) pivoting about an axis (D1) whose position is fixed relative to a plate (3). It includes a banking pin (5) on said plate (3), a bistable assembly (8) including: a rotor (9) which is synchronous with said balance (2) and a lever (11) pivoting about another axis (D2) of said rotor (9) between two extreme positions of indexing means (12) memorizing the position of said balance (2), the trajectory of said lever (11) partially interfering with said banking pin (5) when said balance (2) is pivoting; means (15) for limiting amplitude in the event of a shock, which includes stop means (16) between said lever (11) and said banking pin (5), forming a pivot stop during a normal arc of the balance and which, when pressed, generates a change of position in said indexing means (12) and a stop for said balance (2) in the event of knocking.

Abstract: Timepiece wheel set (1) comprising a first guide surface (2) arranged to cooperate with a second guide surface (3) associated with a bridge (50), for pivotally mounting said wheel set (1) relative to said bridge (50) about an axis (D). Said first guide surface (2) is a single surface, located on a median plane (P) of said wheel set (1), orthogonal to said axis (D), for holding said wheel set (1) careened or in a cantilever arrangement relative to said bridge (50), and said wheel set (1) is free of any guide arbours on both sides of said guide surface (2). Said wheel set (1) forms a ball bearing (10) wherein said first guide surface (2) forms an internal raceway (9) for balls (11) and wherein an external ball race (12) mounted on said bridge (50) includes said second guide surface (3) forming an external raceway for said balls (11).

Abstract: The invention relates to a one-piece regulating member including a balance cooperating with a hairspring made in a layer of silicon-based material and including a balance spring coaxially mounted on a collet. According to the invention, the collet includes one extending part that projects from the balance spring and which is made in a second layer of silicon-based material and is secured to the balance.

Abstract: Timepiece including a back and display element, the timepiece being inscribed between first and second mutually parallel reference planes, the first plane being tangential to the back, and the second plane lying on the same side as the display element. The timepiece contains a movement which includes a framework. The framework includes at least two components positioned one on each side of a reference axis perpendicular to the first and second planes, on each of which components there are mounted a balance and an escapement, which together respectively form a platform escapement, each balance being mounted to pivot about an axis of rotation in the corresponding component. The framework further includes at least one support element having at least one bearing surface on which at least one of the platform escapements is positioned so that the axis of rotation is inclined with respect to the reference planes and intersects them.

Abstract: The invention relates to a resonator (11) with a balance (13) and balance spring (15) including a balance (13) mounted on a staff (17), a balance spring (15) integral with a collet (14) and mounted on said staff. According to the invention, the collet (14) includes an integral protruding portion or bump (16) forming a pin arranged for cooperating with an escape system. The invention concerns the field of timepiece movements.

Abstract: A detent escapement for a timepiece capable of decreasing energy loss with respect to a free oscillation of a balance and improving a timekeeping accuracy is provided. In addition, a detent escapement of a timepiece capable of realizing miniaturization and suppressing variations in the accuracy of a finished product due to assembly errors is provided. A one-side actuating spring of a detent 7 is formed so that a maximum stress portion, which is generated at the time of operating due to the contact of an unlocking stone 4 when a balance 5 is return-rotated, is present to be perpendicular to a first straight line L1 which connects the center of the balance staff 9 and a fulcrum 23a of the blade 23, and to be the side opposite to the balance by a second straight line L2 which passes through the fulcrum 23a.

Abstract: An oscillating mechanism for a timepiece movement, including a first rigid element and a second rigid element, each one fixed on a different element of the movement and at least one of which is mobile relative to the other and pivots about an axis. The mechanism is monobloc and flexible with a variable geometry, and includes a first elastic restoring mechanism producing an elastic connection between the first rigid element and an intermediate rigid element, and a second elastic restoring mechanism producing an elastic connection between the intermediate element and the second rigid element, which all are coplanar according to one plane and configured to be deformed according to the plane.

Abstract: Mechanical timepiece movement (100) in the form of a modular unit. It includes at least one mechanical modular unit (1) for performing a particular timepiece function, which is irreversibly pre-adjusted by the irreversible securing of adjustment and/or assembling components (9) comprised in said functional module (1) after said particular horological function has been adjusted and function checked on the test bench, and in that said at least one pre-adjusted functional module (1) is irreversibly secured to a plate (10) comprised in said movement (100) or comprised in another pre-adjusted functional module (1) of said movement (100), or is irreversibly secured to another pre-adjusted functional module (1) comprised in said movement (100).

Abstract: Tourbillon mechanism for a watch having a turning cage mounted in pivoting manner in a first and second cage bearing lodged in fixed elements of the watch; an escapement mobile integral with the cage; and a regulating element in the form of a spiral balance capable of oscillating around a balance staff according to pulses received from the escapement mobile. The balance staff is mounted in pivoting manner in the balance bearings lodged outside the cage. The outer extremity of the spiral hairspring is fastened to the cage through a hairspring stud.

Abstract: Escape wheel (1) including a toothed impulse wheel (2) and a toothed release wheel (4) pivoting synchronously about an axis (D1). The toothed release wheel (4) includes moveable gears (5) each with a release tooth (6), radially moveable relative to the axis (D1) and returned to a position of balance by first return device (7), and a locking tooth (8), returned in a first radial direction (S1) towards a stop member by second return device (9). The impulse tooth (6) includes drive device (11) arranged to cooperate, when the impulse tooth moves in a second opposite radial direction (S2), with complementary drive device (12) of the locking tooth (8) for driving the locking tooth in the second direction (S2) and, when the impulse tooth moves in the first direction (S1), to remain at a distance from the complementary drive device (12) without driving the locking tooth (8).

Abstract: The invention concerns a timepiece balance (1), with inertia adjustment including a hub (2) pivoting about a balance staff (3) and a felloe (5), connected to said hub (2) by a joining surface (6). It is wherein said felloe (5) is made in a single piece with said joining surface (6) and said hub (2) in a micro-machinable material, or silicon, or quartz, or a compound thereof, or an alloy derived from MEMS technology, or an alloy obtained by the “LIGA” method, and in that it includes at least a first resilient arm (40) including coupling means (41) arranged for cooperating, in various coupling positions, with complementary coupling means (42) comprised in said felloe (5) to form, in the coupling position, a closed loop, the inertia of which relative to said balance staff (3) is variable according to said coupling positions. The invention also concerns a sprung balance or a timepiece incorporating a balance of this type.

Abstract: The invention relates to a timepiece (1) comprising a first resonator (R1) oscillating at a first frequency (f1) and connected by a main gear train (T2) to a main energy source (B2) via a main escapement (D2). According to the invention, the timepiece comprises a second resonator (R2) oscillating at a second frequency (f2) which is lower than the first frequency and cooperating with the main escapement (D2) in order to synchronise maintenance of the first resonator (R1) to said second frequency (f2). The invention concerns the field of coupled oscillators.

Abstract: The invention relates to an immobilizing device for a toothed wheel suitable for the field of horology where it can be part of a direct- or indirect-impulse escapement, in particular in a wristwatch. This immobilizing device (1, 2, 3, 4, 5, 6) comprises: —a base (7); —an immobilizer (9) comprising two arms (10, 11) each provided with a pallet (14, 15) intended to come into contact with a tooth of the toothed wheel (40); —a first and a second elastic element (12, 13) each having an end connected to the immobilizer (9) and another end connected to the base (7); —a third elastic element (16) connected to the immobilizer (9), and it has the particular feature that it is in one piece or in one piece apart from at least one of the pallets (14, 15). The invention also relates to a timepiece and to a method for assembling such a timepiece.

Abstract: The timepiece movement (1) includes a karussel (4) whose platform carries an escape wheel that cooperates with a balance (7). The platform is driven from the time display mechanism associated with a time-setting mechanism (32). The escape wheel is driven directly from the gear train. In addition to compensating for differences in rate due to gravity, the karussel of the invention proposes a new, complementary role: that of time indicator.

Abstract: Timepiece movement including a module fitted with a first wheel set meshing with a second wheel set, which pivots on a base on which the module is mounted. The movement includes a means of positioning the module formed by a cam, at least most of the periphery of which forms an Archimedes' spiral. The cam is arranged so as to allow the distance of centres between the first and second wheel sets to be adjusted, when the cam is rotated on itself about the centre of the Archimedes' spiral. The cam is preferably calibrated. The invention also concerns a method of adjusting the distance of centres between the two wheel sets using said cam to optimise the gearing efficiency of the two wheel sets.

Abstract: The timepiece movement includes a barrel, an escapement that has an escape wheel and pinion (27, 25), a balance (19) and a gear train for transmitting energy stored in the barrel to the escape wheel. This gear train has an intermediary wheel (23), kinematically connected to the barrel by a first part of the gear train, and kinematically connected to the escape wheel (27) by a second part of the gear train, the second part of the gear train, and the escapement and balance are mounted in a rotating carriage (16) kinematically connected to the movement and arranged for rotating coaxially about the intermediary wheel (23) at a different speed from the speed of the intermediary wheel. The timepiece movement is characterized in that it imposes a speed of one revolution per minute on the carriage (16).

Abstract: The horological movement comprises a regulating device having an oscillation frequency f and an escapement (11, 12) for maintaining the oscillations of the regulating device. The escapement comprises an escape wheel (11) having N teeth. The frequency f is at least equal to about 5 Hz, and the ratio between the number N of teeth and the frequency f is substantially equal to 5.

Abstract: The tourbillon mechanism is characterized in that it includes a toothed wheel (127; 227) and at least two toothed elements (125A, 125B; 225A, 225B, 225C) pivoting in the carriage (103), the toothed wheel, which meshes with the escape pinion (111 B), being freely mounted in the carriage in a coaxial position, and said at least two toothed elements (125A, 125B; 225A, 225B, 225C) being regularly spaced around said toothed wheel (127; 227) with which said toothed elements mesh, said at least two toothed elements each being designed to mesh with the fixed toothing (119; 219), so as to connect the escape pinion to the fixed toothing.

Abstract: The micro-mechanical part, for example a horological movement part, includes a silicon core (1) all or part of the surface (3) of which is coated with a thick amorphous material (2). This material is preferably silicon dioxide and has a thickness which is five times greater than the thickness of native silicon dioxide.

Abstract: The timepiece includes a chronograph whose hands are driven by a first gear train (4), which in turn drives a first resonator (5) and a watch whose hands are driven by a second gear train (8) independent of the first gear train, wherein the second gear train in turn drives a second resonator (9). The first (4) and second (8) gear trains are driven from a single energy source (10).

Abstract: Horological movement that includes an energy accumulator, wheel units fitted with time indicator members, kinematic connection means creating multiplication or demultiplication ratios between the different wheel units, and a regulator member. The energy accumulator, the wheel units and the regulator member are arranged coaxially. Each wheel unit possesses a shape similar to a cup, each cup having a different diameter to allow it to fit partially one inside the other. The horological movement also has a differential arranged coaxially with the energy accumulator to provide the kinematic connection between the energy accumulator and one of the cups through a main arbour and a main pipe which is fitted coaxially around the main arbour, the pipe being designed to support both the other cup or cups and the said kinematic connection means. One of the cups preferably corresponds to the second wheel unit in which the regulator member is located.

Abstract: A device comprises a basic clock movement MB whose time indicators are driven by a first barrel connected to a first wheelwork and a first regulator organ, and an autonomous chronograph module MCA whose indicators are driven by a second barrel independent from the first, connected to a second wheelwork and a second regulator organ. The chronograph module is exclusively composed of mechanical elements. The frequency of oscillation supplied by its regulator is equal N times the frequency of oscillation supplied by the regulator of the base movement, with the coefficient N being definable according to a specific application of the chronograph, so that any chronograph module thus previously defined can work with the same base movement. The chronograph regulator remains constantly engaged with the corresponding wheelwork. The chronograph module allows a time interval to be read with a minimum precision of a hundredth of second.

Abstract: An escapement mechanism adapted for transmitting mechanical energy pulses from a driving source to an oscillating regulator of a timepiece via a blade spring (12) operating in a buckling manner about a curvature point, wherein the blade spring (12) can build up the energy from the driving source between two pulses and transmit the same to the oscillating regulator upon each pulse via first (18) and second (26) levers. In order to optimize the adjustment of the tension of the blade spring (12), the latter is mounted on a frame (50) capable of symmetric deformation relative to a first axis (AA) extending through the rotation axes of the regulator, the levers (18, 26) and through the curvature point, and relative to a second axis (BB) perpendicular to the first one and extending through the ends of the blade spring (12).

Abstract: 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).

Abstract: A movement for a timepiece, that includes: a housing (10, 12); an energy source; a gear driven by the energy source (14); a frame (26) for a tourbillon (18) rotatingly mounted on the housing (10, 12) about a first axis (AA) and driven by the gear (14); a balance (32) mounted so as to oscillate in bearings on the frame (26); and an escapement (16, 34) including a fixed wheel (16) and a control member (34) interacting with the balance (32), the fixed wheel (16) sustaining the balance (32). In this movement, the bearings are arranged so that the balance (32) oscillates about a second axis (BB) inclined relative to the first axis (AA).

Abstract: The horological movement comprises a regulating device having an oscillation frequency (f) and an escapement for maintaining the oscillations of the regulating device. The escapement comprises an escape wheel having (N) teeth. The frequency (f) is at least equal to about 5 Hz, and the ratio between the number (N) of teeth and the frequency (f) is substantially equal to 5.

Abstract: Anti-trip device (1) for a balance (2) pivoting about an axis (D1) whose position is fixed relative to a plate (3). It includes a banking pin (5) on said plate (3), a bistable assembly (8) including: a rotor (9) which is synchronous with said balance (2) and a lever (11) pivoting about another axis (D2) of said rotor (9) between two extreme positions of indexing means (12) memorising the position of said balance (2), the trajectory of said lever (11) partially interfering with said banking pin (5) when said balance (2) is pivoting; means (15) for limiting amplitude in the event of a shock, which includes stop means (16) between said lever (11) and said banking pin (5), forming a pivot stop during a normal arc of the balance and which, when pressed, generates a change of position in said indexing means (12) and a stop for said balance (2) in the event of knocking.

Abstract: The invention concerns an anti-trip device (1) for an escape mechanism (10) arranged to cooperate with a balance (2) pivoting about a first axis (D1). It includes a pivoting wheel set (5), pivotally moveable about a second axis (D2) parallel to said first axis (D1) and fixed relative to a plate. The pivoting wheel set (5) includes guide means (7) arranged to cooperate with complementary guide means (9) comprised in a roller (3) pivoting integrally with said balance (2). Said complementary guide means (9) includes a cam (90) for moving said pivoting wheel set (5) closer to said first axis (D1) when said balance is pivoting in a first direction (B1) and to move said wheel set away from said first arbour when the balance is pivoting in a second direction (B2) opposite to said first direction (B1). Said guide means (7) includes a fixed finger arranged to cooperate with said cam.

Abstract: Escape wheel (1) including a toothed impulse wheel (2) and a toothed release wheel (4) pivoting synchronously about an axis (Dl). The toothed release wheel (4) includes moveable gears (5) each with a release tooth (6), radially moveable relative to the axis (D1) and returned to a position of balance by first return device (7), and a locking tooth (8), returned in a first radial direction (Si) towards a stop member by second return device (9). The impulse tooth (6) includes drive device (11) arranged to cooperate, when the impulse tooth moves in a second opposite radial direction (S2), with complementary drive device (12) of the locking tooth (8) for driving the locking tooth in the second direction (S2) and, when the impulse tooth moves in the first direction (S1), to remain at a distance from the complementary drive device (12) without driving the locking tooth (8).

Abstract: The invention relates to a clock movement including a frame (6) having a barrel (1) that contains a mainspring, a finishing gear train (2-4), an escapement mechanism (5, 7), and a spiral balance spring (8). The frame (6) comprises first clamp bodies (25, 24) for receiving respective pivotal movement members of the escapement wheel (5) and of the anchor (7), and second homologous clamp bodies (22, 26) alternating with the first clamp bodies (25, 24), the first and second clamp bodies (25, 22) of the escapement wheel being located on a circle centered on the axis of the mean wheel (3) of the finishing gear train and defining a plane that is orthogonal to said axis.

Abstract: The anti-trip balance-spring for a timepiece escapement which has no stop member is intended to oscillate between two extreme positions, passing through a position of equilibrium. It includes a plurality of coils and further includes means for locking at least two consecutive coils when the amplitude of rotation from the position of equilibrium to at least one of the end positions, reaches a determined angle ?.

Abstract: A detent escapement for a timepiece capable of decreasing energy loss with respect to a free oscillation of a balance and improving a timekeeping accuracy is provided. In addition, a detent escapement of a timepiece capable of realizing miniaturization and suppressing variations in the accuracy of a finished product due to assembly errors is provided. A one-side actuating spring of a detent 7 is formed so that a maximum stress portion, which is generated at the time of operating due to the contact of an unlocking stone 4 when a balance 5 is return-rotated, is present to be perpendicular to a first straight line L1 which connects the center of the balance staff 9 and a fulcrum 23a of the blade 23, and to be the side opposite to the balance by a second straight line L2 which passes through the fulcrum 23a.

Abstract: A detent escapement for a timepiece has an escape wheel and a balance that freely oscillates about a balance staff and includes an impulse jewel that contacts a wheel tooth of the escape wheel and an unlocking stone. A blade includes a locking stone that contacts the wheel tooth of the escape wheel and is supported so as to be capable of approaching to and separating from the escape wheel. A one-side actuating spring contacts the unlocking stone and is elastically deformed along the approaching and separating direction with respect to the blade. The blade is constituted of a blade main body and a blade adjustment portion that is separated from the blade main body.

Abstract: Method for coating micromechanical components of a micromechanical system, in particular a watch movement, comprising: providing a substrate component to be coated; providing said component with a diamond coating; wherein diamond coating is provide by CVD in a reaction chamber and during CVD deposition, during the last portion of the growth process, a controlled change of the carbon content within the reaction chamber is provided, thereby providing a change of the sp2/sp3 carbon bonds in the vicinity of the surface. Corresponding micromechanical components are also provided.

Abstract: A device comprises a basic clock movement MB whose time indicators are driven by a first barrel connected to a first wheelwork and a first regulator organ, and an autonomous chronograph module MCA whose indicators are driven by a second barrel independent from the first, connected to a second wheelwork and a second regulator organ. The chronograph module is exclusively composed of mechanical elements. The frequency of oscillation supplied by its regulator is equal N times the frequency of oscillation supplied by the regulator of the base movement, with the coefficient N being definable according to a specific application of the chronograph, so that any chronograph module thus previously defined can work with the same base movement. The chronograph regulator remains constantly engaged with the corresponding wheelwork. The chronograph module allows a time interval to be read with a minimum precision of a hundredth of second.

Abstract: The invention concerns a escapement lever (1) for the escapement mechanism of a timepiece movement, including at least one fork delimiting a notch (2) which includes horns (3; 4) arranged for cooperating with a balance. Said fork notch (2) includes, in at least one said horn (3; 4), a slot (5, 6) and/or a chamber (30), wherein said slot (5; 6) and/or chamber (30) is arranged to confer elasticity on the corresponding horn, which softens the shock at each impulse, by absorbing part of the impact energy, and then returning it subsequent to said impact.

Abstract: This escapement comprises a balance wheel (3), an escape wheel (1), a detent rocker (4) having an arresting element (4a) and an elastic clearance element (4c), means for inserting the arresting element into the path of the teeth of the escape wheel (1), and a clearance pin (7) rotating integrally with the balance wheel (3) in order to engage with the elastic clearance element (4c) of the rocker (4) once per period of oscillation of the balance wheel. The means for inserting the arresting element (4a) into the path of the teeth of the escape wheel (1) comprise a sliding surface (4b) integral with the detent rocker (4) and arranged so as to move into the path of the teeth of the escape wheel (1) when the arresting element (4a) leaves it, this sliding surface being shaped so as to return the arresting element (4a) to the locking position.

Abstract: The invention relates to a single piece coaxial escape wheel set (100, 100?) including a first toothing (108, 108?) formed at the periphery of a plate (103, 103?) and a second toothing (113, 113?). According to the invention, the second toothing (113, 113?) is formed in a single piece with the plate (103, 103?) of the first toothing (108, 108?) so as to reduce any problems of alignment of one in relation to the other and to decrease the overall mass of the wheel set (100, 100?). The invention concerns the field of timepieces.

Abstract: The mechanism avoids the rate variations due to the effect of gravitation on a regulating organ of a timepiece whose regulating organ includes a sprung balance and an escape wheel mounted onto a platform. The platform includes a counterweight and is mounted so as to freely rotate about at least a first axis relative to a plate of the movement so that this platform will rotate about the first axis under the effect of terrestrial gravitation. This mechanism includes a wheelwork with a driving kinematical chain linking the escape wheel to a barrel system of the timepiece, and a corrective kinematical chain compensating the movements and speed of the platform relative to the plate, so that these movements of the platform will not perturb the chronometry of the timepiece.

Abstract: The present invention relates to an improved detachable clock and watch gear assembly structure, which divides the gear assembly into detachable and independent first and second devices; the first device comprises: main and pinion gear representing hour, minute and second hands, spiral spring wheel for storing energy and spiral spring for ringing; the second device comprises: time-controlled precision escapement wheel, pallet, balance spring and balance wheel; of which, the first device can clamp securely the main and pinion gears as well as spiral spring by using upper/lower plywood along with the fixed leg, so can the second device clamp securely the escapement wheel, pallet, balance spring and balance wheel in the same way; an fixed arm is extended from the upper/lower plywood at one side of the first device to clamp the second device and fix it by bolt for meshing and interlocking purpose; with this design, the first device can be checked or replaced in common repair or replacement process, helping to avo

Abstract: The present invention concerns a mechanical oscillator, comprising an oscillating system comprising a balance (1) and its return spring (3). This oscillator also comprises two elastic strips (9, 10) fixed by one end and acting in opposition intermittently by their other end on a connecting organ (8) secured to the oscillating system.