Abstract: A component (10) of a horological movement, which component includes two arms (11) connected to each other by a pivot link, the component (10) being able to occupy an extended position and a folded position, in which folded position the arms (11) form a smaller angle than when the component (10) occupies the extended position, the component (10) further including a coupling mechanism configured to prevent any relative mobility between the two arms (11) when the component (10) occupies the extended position.

Abstract: A natural escapement for a horological movement performing a succession of operating cycles each composed of a first and a second alternation of a balance which includes a balance wheel on an axis of which is adjusted a balance plate, this natural escapement including a first escapement wheel arranged to be driven by a second wheel, this first escapement wheel in turn driving a second escapement wheel, the balance plate carrying a balance pin wherein this balance plate causes the pivoting of an anchor at each of the first and second alternations, a first lever, pivoted about a pivot axis, being connected to a first arm of the anchor via at least one pivot joint, the anchor including a second arm extended by a second lever, these levers being arranged to respectively lock the first and second escapement wheels temporarily.

Abstract: A detent escapement includes an escape wheel with teeth regularly spaced along a perimeter and a balance having an impulse pallet and receiving driving impulses via the teeth, the balance performing an alternation during which it receives a driving impulse and an alternation without a driving impulse, the detent escapement also including a hook pivotally mounted on the balance and held bearing by an elastic member against an abutment, the detent escapement including a pivotable detent which includes a first arm which collaborates with the escape wheel to block the latter before the start of the driving impulse, as well as a second arm to allow the escape wheel to disengage from its engagement with the first arm at the start of the driving impulse, and which limits the pivoting of this detent to only part of the oscillation of the balance, the detent being configured to again block the escape wheel after the latter has finished providing the driving impulse to the impulse pallet of the balance.

Abstract: A device for selecting and controlling functions of a horological movement, including a selector member arranged such that, when it is acted on, it causes a column wheel including a plurality of coaxial cams which are integral with one another for rotation as one, to rotate in a single direction of rotation, the device including a plurality of transmission yokes, each of which is arranged such that it bears against a cam specific thereto so as to be able to successively occupy, depending on the angular position of the cam, a rest position and an active position, each transmission yoke being configured such that when it occupies the active position, it is disposed in the path of a control member which is intended, when it is acted on from a rest position, to drive the transmission yoke located in an active position, towards a position for controlling a function specific thereto.

Abstract: Method for relative time setting of a sympathetic watch (200) by a sympathetic clock (100) with which the watch (200) forms a sympathetic assembly (1000), the watch (200) including at least one hour display (4) and one minute display (5), a reference position of which will be defined, and the time-setting is executed, only at request by action of a user on a control means (300) included in the clock (100) or the watch (200), or automatically periodically controlled by the clock (100), and, to perform the relative time setting, the clock (100) drives said displays (4; 5) of the watch backwards, in the counter-clockwise direction, with a sufficiently long stroke to ensure that the displays (4; 5) pass through the reference position, before a return in the clockwise direction to the instantaneous time, and method for winding the watch by this relative time setting.

Abstract: A method for reference time setting of the displays of a sympathetic watch by a sympathetic clock forming a sympathetic assembly with the watch. At any time, the reference time setting of the watch is performed by a first phase during which the placement in the reference position is triggered, by a first displacement of an interface between the clock and the watch, the reference time setting of the displays, and the coupling mechanism is uncoupled to allow the rack to drive the display gear train of the watch in the counter-clockwise direction, over as many revolutions as necessary, until the pawl meets the ratchet tooth opening of the hour cam, then the time-setting mechanism controlled by the clock sets the time of the displays of the watch in the clockwise direction to the exact time by recoiling the rack, then the coupling mechanism is recoupled.

Abstract: A sympathetic timepiece assembly (1000), including a sympathetic watch (200), and a sympathetic clock (100) with a receptacle (150) for receiving the watch, for the power recharging and/or the display adjustment and/or the rate adjustment controlled by the clock (100) or by the watch, through a connection mechanism including at least two distinct transmission lines between the clock and the watch in the transfer position, the watch including a resonator (10), and a display gear train and a finishing gear train, and, or else a stop mechanism (20) arranged to stop the operation of said resonator, or else a coupling mechanism allowing to separate the display from the finishing gear train, or else both such a stop mechanism and such a coupling mechanism, and the watch including at least one hour display (4) and one minute display (5).

Abstract: A natural escapement for horological movement including a balance that moves from a first extreme position to a second extreme position and vice versa by passing through a middle locking position, this balance including a balance wheel on an arbor of which is adjusted a balance plate, the natural escapement also including a first escape wheel set driven by a wheel set of the train of the horological movement and driving in turn a second escape wheel set, the first and second escape wheel sets forming a kinematic chain cooperating with an anchor, the balance plate carrying a second impulse pallet-stone which receives a driving impulse from the first escape wheel set during the first alternation, and a first impulse pallet-stone which receives a driving impulse from the second escape wheel set during the second alternation.

Abstract: A natural escapement for a horological movement performing a succession of operating cycles each composed of a first and a second alternation of a balance which includes a balance wheel on an axis of which is adjusted a balance plate, this natural escapement including a first escapement wheel arranged to be driven by a second wheel, this first escapement wheel in turn driving a second escapement wheel, the balance plate carrying a balance pin wherein this balance plate causes the pivoting of an anchor at each of the first and second alternations, a first lever, pivoted about a pivot axis, being connected to a first arm of the anchor via at least one pivot joint, the anchor including a second arm extended by a second lever, these levers being arranged to respectively lock the first and second escapement wheels temporarily.

Abstract: A detent escapement includes an escape wheel with teeth regularly spaced along a perimeter and a balance having an impulse pallet and receiving driving impulses via the teeth, the balance performing an alternation during which it receives a driving impulse and an alternation without a driving impulse, the detent escapement also including a hook pivotally mounted on the balance and held bearing by an elastic member against an abutment, the detent escapement including a pivotable detent which includes a first arm which collaborates with the escape wheel to block the latter before the start of the driving impulse, as well as a second arm to allow the escape wheel to disengage from its engagement with the first arm at the start of the driving impulse, and which limits the pivoting of this detent to only part of the oscillation of the balance, the detent being configured to again block the escape wheel after the latter has finished providing the driving impulse to the impulse pallet of the balance.

Abstract: Shim for a turbomachine blade, for covering the root of said blade, the shim comprising: two branches for covering the bearing surfaces of the blade root; a base interconnecting these branches; and at least one holder element located at one end of the shim and suitable for coming into contact with the blade root to retain the shim relative to the blade root, the shim further comprising, at its other end, at least one foolproofing element projecting from the base in the opposite direction to the branches. A turbomachine rotor assembly including such a shim.

Abstract: The invention relates to a method of improving the retention capacity of a blade having an asymmetrical hammerhead connection and extending in a conical stream, with the root of the blade being retained in a peripheral groove in a disk, said groove having an upstream lip and a downstream lip presenting respective bearing surfaces that extend in planes that are asymmetrical relative to planes perpendicular to the axis of rotation of said disk, and against which the surfaces of the upstream and downstream flanks of said root come to bear, the bearing surface of said upstream lip being connected to the bottom wall of said groove via a rounded surface, and the upstream flank presenting, in the vicinity of said rounded surface, a heel situated inside a circle of radius R centered on the axis about which said blade tends to pivot when axial stress is applied thereto, said circle outlining, in the upstream lip, a crescent shape of thickness e, wherein: a) the connection between the bearing surface of the upstream