Abstract: A device for assembly and alignment on a first bridge, particularly a timepiece movement plate, arranged in a first plane, the device including a second bridge arranged in a second plane, the second bridge being intended to carry a component, in particular a moving component of a timepiece resonator mechanism, the device including a device for aligning the second bridge on the first bridge, the alignment device including at least two bearing faces of the second bridge arranged orthogonally to the second plane in two different directions, the alignment device further including at least two movable adjustment pieces connected to the first bridge, the adjustment pieces each being configured to contact with one of the bearing faces to position the second bridge in a position on the first bridge, the movable pieces defining a plurality of positions of the second bridge on the first bridge.

Abstract: An element for radial guiding of a pivot of a rod of a rotating wheel, for example a rod of a balance, for a bearing of an horological movement, in particular shock-absorbing, the guide element including a body configured to cooperate with a bearing unit in such a way as to be maintained in the unit, the body defining a space for radial retention of the pivot, to maintain the rod radially while allowing it to rotate. The radial guide element includes at least three localized radial-bearing parts distributed angularly, the three parts defining the radial retention space, each part having a face for contact with the pivot, each face locally having a cylindrical shape convex towards the inside of the radial retention space, the bearing parts having an elongated body.

Abstract: A mechanical timepiece oscillator includes, between a support and an inertial element, a flexure bearing with flexible strips crossed in projection, including, superposed, an upper level that includes, between an upper support and an upper inertial element, an upper primary strip in a first direction and an upper secondary strip in a second direction, and a lower level that includes, between a lower support and a lower inertial element, a lower primary strip in the first direction and a lower secondary strip in the second direction. The upper level and lower level include, between the support and the upper or respectively lower support, a translational table with an elastic connection along one or two axes of freedom in the oscillation plane, of lower stiffness than that of each flexible strip.

Abstract: An isochronous pivot for a resonator including two flexible strips joining attachment points of a first and a second element, defining two strip directions, and a pivot axis, at the intersection of their projections or at their intersection, each strip having a free length between its attachment points, and an axial distance between the pivot axis and the attachment point thereof farthest from the axis, the attachment point ratio X=D/L being greater than one for each strip, the strip directions defining with the axis a first apex angle whose value in degrees includes between f1(X)=108+67/(10X?6), and f2(X)=113+67/(10X?6).

Abstract: A mechanical horological movement includes at least one energy storage to drive a gear train of which an output mobile component pivots about a drive axis and including a rotary resonator which has at least one central mobile component to pivot about a central axis and including an input mobile component to collaborate with the output mobile component, this rotary resonator includes a plurality of inertial elements that each pivot with respect to the central mobile component about a secondary axis perpendicular to the central axis and each returned towards a rest position, relative with respect to the central mobile component, by at least one elastic return element, and each secondary axis passes through the centre of mass of the inertial element associated with it.

Abstract: A device for guiding a pivoting mass about an axis. A first support is fixed and a second support forms or supports the pivoting mass. The device is includes a first and second flexible leaf oriented in the same direction when the device is at rest, and an intermediate leaf having a rigidity notably greater than the flexible leaves and connecting the first flexible leaf to the second, the device including a first fixed link formed by the first support and a first end of the first leaf, a second fixed link formed by a second end of the first leaf and by a first end of the intermediate leaf, a third fixed link formed by a second end of the intermediate leaf and by a first end of the second leaf and a fourth fixed link formed by at least one second end of the second leaf, wherein the first and/or the fourth link is arranged substantially between the second and the third link in the direction when the device is at rest.

Abstract: A mechanical timepiece oscillator including, between a first element and a second inertial element, more than two distinct flexible strips returning the inertial element to a rest position in an oscillation plane, wherein the projections of these strips cross each other, at a point, through which passes the axis of pivoting of the second solid inertial element, and the height to thickness aspect ratio is less than 10 for each strip.

Abstract: A mechanical timepiece oscillator includes, between a first element and a second inertial element, two distinct flexible strips returning the inertial element to a rest position in an oscillation plane, the projections of these strips crossing each other, in the rest position, at a point, through which passes the pivoting axis of the second solid inertial element, the embedding points of the strips in the first element and the second inertial element defining two directions in which each strip has a free length between its embedding points, and an axial distance between the pivoting axis and the farthest of its embedding points, and, for each strip, the embedding point ratio is comprised between 0 and 1, and the vertex angle at the crossing point of the directions of the strips is less than 70°.

Abstract: A mechanical oscillator with an inertia element oscillating about a virtual pivot axis of fixed position with respect to a fixed base to which it is suspended by several flexible connections, each including a deformable compass-like member including elastic strips forming a first arm fixed to a base and a second arm fixed to the inertia element, joined at a reversal edge defining a apex of the deformable compass-like member, wherein in an unstressed rest state of the oscillator, the projection of the apex is on a first side of the pivot axis, opposite to a second side where the ends of the first and second arms are projected.

Abstract: Timepiece resonator (100) comprising an inertia element (4; 5) suspended from a flexible strip (2) deformable in a plane XY parallel to a longitudinal direction Y, and whose transverse extension along a transverse axis X, in projection onto the plane XY, is variable and of positive value on at least one side of the neutral axis (FN) of said strip (2), which includes, at a distance from its embedments, at least one rib (3) extending substantially along an axis Z perpendicular to the plane XY, each having at least one generatrix which is farther from the neutral axis (FN) than the external surfaces of the sections (6) of the strip (2) located outside the ribs (3), and the longitudinal extension (LN) of each rib (3) of the strip (2), along the longitudinal axis Y, is less than one fifth of the length L of the strip (2) between its embedments.

Abstract: Timepiece resonator (100) comprising an inertia element (4; 5) suspended from a flexible strip (2) deformable in a plane XY parallel to a longitudinal direction Y, and whose transverse extension along a transverse axis X, in projection onto the plane XY, is variable and of positive value on at least one side of the neutral axis (FN) of said strip (2), which includes, at a distance from its embedments, at least one rib (3) extending substantially along an axis Z perpendicular to the plane XY, each having at least one generatrix which is farther from the neutral axis (FN) than the external surfaces of the sections (6) of the strip (2) located outside the ribs (3), and the longitudinal extension (LN) of each rib (3) of the strip (2), along the longitudinal axis Y, is less than one fifth of the length L of the strip (2) between its embedments.

Abstract: Timepiece (1) comprising at least one mechanical movement (10) including at least a main plate (2), a resonator (11) and energy storage and distribution means (3) connected to an escape wheel set (4) by a going train (5), wherein at least one of the wheel sets, comprised in the going train (5) or an escapement mechanism (6) to which the escape wheel set (4) belongs, and which cooperates with the resonator (11), and which moves in a jerky or reciprocating motion during operation of the resonator (11), is a display wheel set (7) which includes at least two distinct pictures or patterns (8), which are arranged to move in succession before a fixed point of the main plate (2), during operation of the resonator (11), and to display thereon a sequence of animated images.

Abstract: A timepiece regulator includes a detached lever escapement mechanism, and a resonator with a quality factor Q including an inertia element comprising an impulse pin integral with an inertia element and cooperating with a fork of the lever. This inertia element is subjected to the action of elastic return means directly or indirectly fixed to the plate and is arranged to cooperate indirectly with an escape wheel set comprised in the escapement mechanism. This resonator mechanism is a resonator with a virtual pivot rotating about a main axis (DP), with a flexure bearing subjected to the return force of at least two flexible strips attached to the plate, defining together a virtual pivot with a main axis (DP), the lever pivoting about a secondary axis (DS).

Abstract: The invention relates to a one-piece balance spring comprising a single strip wound on itself between an inner coil and an outer coil, the strip having a geometry such that when the angle of contraction of the balance spring has a value of 360 degrees, there is a constant distance between each coil from the inner coil to the penultimate coil.

Abstract: A mechanical timepiece oscillator includes, between a support and an inertial element, a flexure bearing with flexible strips crossed in projection, including, superposed, an upper level that includes, between an upper support and an upper inertial element, an upper primary strip in a first direction and an upper secondary strip in a second direction, and a lower level that includes, between a lower support and a lower inertial element, a lower primary strip in the first direction and a lower secondary strip in the second direction. The upper level and lower level include, between the support and the upper or respectively lower support, a translational table with an elastic connection along one or two axes of freedom in the oscillation plane, of lower stiffness than that of each flexible strip.

Abstract: A method for making a flexure bearing for an oscillator with an inertial element oscillating in a plane supported by flexible strips fixed to a stationary support returning it to a rest position includes: forming the bearing with basic strips in superposed levels, each having an aspect ratio of less than 10; breaking down the number of basic levels into a plurality of sub-units, each including one or two strips joining a basic support and a basic inertial element, which are made by etching substrates; assembling the sub-units by joining their basic inertial elements; and fixing the basic supports to the support, directly or via translational tables along one or two in-plane translational degrees of freedom, of lower translational stiffness than that of the sub-unit.

Abstract: A mechanical timepiece oscillator including, between a first element and a second inertial element, more than two distinct flexible strips returning the inertial element to a rest position in an oscillation plane, wherein the projections of these strips cross each other, at a point, through which passes the axis of pivoting of the second solid inertial element, and the height to thickness aspect ratio is less than 10 for each strip.

Abstract: Timepiece regulator (300) comprising a detached lever (7) escapement mechanism (200), and a resonator (100) with a quality factor Q including an inertia element (2) comprising an impulse pin (6) integral with an inertia element (2) and cooperating with a fork (8) of the lever (7), this inertia element (2) being subjected to the action of elastic return means (3) directly or indirectly fixed to the plate (1) and being arranged to cooperate indirectly with an escape wheel set (4) comprised in the escapement mechanism (200), this resonator mechanism (100) is a resonator with a virtual pivot rotating about a main axis (DP), with a flexure bearing subjected to the return force of at least two flexible strips (5) attached to the plate (1), defining together a virtual pivot with a main axis (DP), the lever (7) pivoting about a secondary axis (DS), and the fork (8) is enlarged in comparison to the fork of a conventional Swiss lever.

Abstract: A mechanical oscillator with an inertia element oscillating about a virtual pivot axis of fixed position with respect to a fixed base to which it is suspended by several flexible connections, each including a deformable compass-like member including elastic strips forming a first arm fixed to a base and a second arm fixed to the inertia element, joined at a reversal edge defining a apex of the deformable compass-like member, wherein in an unstressed rest state of the oscillator, the projection of the apex is on a first side of the pivot axis, opposite to a second side where the ends of the first and second arms are projected.

Abstract: A resonator of the inertia/elasticity type includes a balance-spring coupled to an inertia flywheel and a system for adjusting the frequency of the resonator including an index-assembly arranged to cooperate with one coil of the balance-spring in order to selectively choose the active length of the balance-spring. The portion of the coil of the balance-spring cooperating with the index-assembly includes at least one area of larger cross-section than the other balance-spring coils for finer adjustment of the frequency of the resonator.