Abstract: Inertia mobile component (1) for a horological resonator (100), oscillating about an axis of oscillation (D1), and including at least one magnetic area (10), the total resultant magnetic moment of all of the magnetic areas (10), included in the inertia mobile component (1), is aligned in the direction of the axis of oscillation (D1), this inertia mobile component (1) bearing at least one magnetic compensating element (4), the magnetisation component thereof in a direction perpendicular to the axis of oscillation (D1) can be adjusted in order to obtain a total resultant magnetic moment that is aligned in the direction of the axis of oscillation (D1).

Abstract: A damped anti-rotational system is provided comprising a pawl carrier having an axis of rotation, a pawl pivotably mounted to the pawl carrier on a pivot joint, the pawl having a contact portion and a counterweight portion, a stop pin axially disposed in the pawl carrier and configured to contact the contact portion of the pawl in response to radially inward movement of the pawl, wherein the stop pin is mounted to the pawl carrier at a forward portion of the stop pin and an aft portion of the stop pin, wherein a forward O ring is disposed on the forward portion of the stop pin and an aft O ring is disposed on the aft portion of the stop pin.

Abstract: An escapement mechanism including a stop member between a resonator and two escape wheel sets each subjected to a torque, and each including a magnetized or ferromagnetic track over a period. The stop member includes at least one magnetized or ferromagnetic pole shoe, transversely movable with respect to travel of a surface of the track. The pole shoe or the track creates a magnetic field between the pole shoe and the surface, and the pole shoe is confronted by a magnetic field barrier on the track just before each transverse motion of the stop member actuated by the period action of the resonator. The escape wheel sets are each arranged to cooperate alternately with the stop member, and are connected to each other by a direct kinematic connection.

Abstract: A magnetic clock escapement, and a regulating device, the escapement including a first circular network formed by N1 magnetic lines and a second circular network formed by N2 magnetic lines, N2 being different from N1. The first and second networks are superimposed to define a combined pattern having a magnetic Moiré effect. The combined pattern is coupled magnetically to at least one magnet of a resonator to pace operation of a mechanical clock movement. The first magnetic structure is carried by an escapement wheel and can rotate relative to the second fixed magnetic structure with an angular frequency F1. The combined pattern rotates with a greater angular frequency F2 and equal to the angular frequency F1 multiplied by the number N1 and divided by the number ?N equal to this number N1 minus the number N2, F2=F1·N1/?N.

Abstract: A timepiece movement including, fixed on a same plate, a gear train subjected to a torque in a timepiece movement, and an energy storage to deliver a torque to the gear train for actuating a mechanical mechanism synchronizing rotational speed of the gear train with a resonator having a given natural resonant frequency included in the timepiece movement. The resonator is an annular resonator including a ring disposed around an axis. The ring is arranged to be periodically deformed under an action induced by motion of a drive member, included in this mechanism, and the drive member is driven in a pivoting motion, directly or indirectly, by the gear train.

Abstract: An escapement mechanism including an escape wheel subjected to a rotational torque and a resonator integral with a pivotally mounted regulating wheel set. The escape wheel includes plural actuators regularly spaced on a periphery thereof, each arranged to cooperate directly with at least a first track of the regulating wheel set. Each actuator includes a first magnetically, or respectively electrically charged, or ferromagnetic or respectively electrostatically conductive surface, to cooperate with the first track which is magnetically, or respectively electrically charged, or ferromagnetic or respectively electrostatically conductive, to repel or attract each first surface of the actuator, and each actuator includes a mechanical stop member to cooperate, in an end-of-travel stop arrangement, with at least a first complementary stop surface included in the regulating wheel set to constitute therewith an autonomous escapement mechanism.

Abstract: There is provided a device for regulating the operation of a horological movement, including a magnetic escapement, which includes a resonator and a magnetic escapement mobile turning about an axis. The mobile includes at least one magnetic track with a plurality of magnets having an angular dimension that is greater than their radial dimension. The resonator includes at least one magnetic element for coupling to the magnetic track. The coupling element extends radially relative to the axis of rotation, and has a contour with a portion oriented substantially angularly when the resonator is in the rest position. When the mobile is driven in rotation, each magnet penetrates beneath the coupling element and gradually accumulates some potential magnetic energy. The magnet then exits from beneath the coupling element through the portion and the coupling element receives a pulse located around its rest position.

Abstract: A timepiece resonator including a mobile component ring-shaped about an axis and capable of oscillation about an axis, and a drive member subjected to a torque inside a timepiece movement. The resonator is an annular magnetic or electrostatic resonator whose mobile component is periodically excited under action induced by motion of the drive member. The drive member can exert a contactless effort on the mobile component. The mobile component includes a first quantity of first pole pieces magnetically or electrically charged at a first pitch angle, and the drive member includes a second quantity of second pole pieces magnetically or electrically charged at a second pitch angle different from the first pitch angle, arranged to cooperate in attraction or in repulsion with the first pole pieces, such that the mobile component and the drive member together form a speed reducing or increasing mechanism.

Abstract: The invention concerns a device for regulating the relative angular speed between a magnetic structure and a resonator magnetically coupled to each other and forming an oscillator which defines a magnetic escapement. The magnetic structure includes at least one annular magnetic path at least partially formed of a magnetic material of which one physical parameter is correlated to the magnetic potential energy of the oscillator, the magnetic material being arranged along the annular path so that the physical parameter varies angularly in a periodic manner. The annular path includes, in each angular period, an area of accumulation of magnetic potential energy in the oscillator, radially adjacent to an impulse area. The magnetic material, in each accumulation area, is arranged so that the physical parameter of said magnetic material gradually increases angularly or gradually decreases angularly.

Abstract: The invention concerns a device for regulating the relative angular speed between a magnetic structure and a resonator magnetically coupled to each other and forming an oscillator which defines a magnetic escapement. The magnetic structure includes at least one annular magnetic path at least partially formed of a magnetic material and the resonator includes at least one element for magnetic coupling to the annular magnetic path, this coupling element being formed of a magnetic material having a physical parameter correlated to the magnetic potential energy of the oscillator. The radial dimension of the annular magnetic path is smaller than a corresponding dimension of the coupling element, and the magnetic material is arranged so that the physical parameter of said magnetic material gradually increases angularly or gradually decreases angularly in order to obtain an angularly extended magnetic potential energy area in each angular period of the annular magnetic path.

Abstract: A glass cutter is provided which can form, using a wheel, a uniform crack in glass even when a projection or an earlier-formed scribe line is present on the glass. When the wheel is moved on the glass, a fracture layer is formed causing a rib mark to be formed below the fracture layer and a crack to be formed below the rib mark. To cut the glass, the crack is required to be formed uniformly. Applying a force to resist the rotating force of the wheel makes it possible to form a uniform crack even when a projection is present on the glass. This improves glass cutting yield.

Abstract: A tuning-fork mechanical resonator for a mechanical clock movement with free escapement includes an oscillator of the tuning fork type, of which at least one first prong is intended to oscillate about a first axis and bears at least one first pin associated with at least one first fork tooth of a pallet assembly to cause this assembly to pivot between first and second angular positions and alternately lock and release an escapement wheel. The resonator comprises a conversion member secured to the first pin and designed to on the one hand, convert the oscillations of the first prong of the oscillator into rotational movements of the pallet assembly by transmitting first impulses thereto, and on the other hand, transmit mechanical energy from the pallet assembly to the first prong of the oscillator in the form of impulses.

Abstract: A magnetic resonator, for a timepiece, is disclosed which comprises an oscillator of the tuning-fork type having first and second branches in the form of a U of which at least a first branch supports a first permanent magnet defining a first magnetic field, an escape wheel, designed to be arranged in engagement with a watchwork gear train in order to allow it to be driven by a power source of the timepiece and, situated within range of said first permanent magnet in order to undergo the influence of the first magnetic field. In particular, provision is made for the escape wheel to be free and support at least two permanent magnets, preferably at least four, arranged so that the vibrations of the first branch of the tuning fork, on the one hand, control the rotation speed of the escape wheel and, on the other hand, are sustained periodically by the magnetic interaction between the first permanent magnet of the tuning fork and the permanent magnets of the escape wheel in order to define a free escapement.

Abstract: A magnetic resonator, for a timepiece, is disclosed which comprises an oscillator of the tuning-fork type having first and second branches in the form of a U of which at least a first branch supports a first permanent magnet defining a first magnetic field, an escape wheel, designed to be arranged in engagement with a watchwork gear train in order to allow it to be driven by a power source of the timepiece and, situated within range of said first permanent magnet in order to undergo the influence of the first magnetic field. In particular, provision is made for the escape wheel to be free and support at least two permanent magnets, preferably at least four, arranged so that the vibrations of the first branch of the tuning fork, on the one hand, control the rotation speed of the escape wheel and, on the other hand, are sustained periodically by the magnetic interaction between the first permanent magnet of the tuning fork and the permanent magnets of the escape wheel in order to define a free escapement.

Abstract: A regulating member for a wristwatch movement includes a balance having at least one mobile magnet and a magnetic return member having at least one fixed permanent magnet. The permanent magnet engages with the mobile magnet of the balance, so as to generate a mechanical restoring torque for bringing the balance towards at least one resting position. The regulating member further includes an escapement for transmitting pulses to the balance so as to move the balance away from the resting position, and at least one yoke made of a ferromagnetic material for concentrating a magnetic flux of at least one of the permanent magnets.

Abstract: The invention relates to a timepiece movement (1) comprising a sprung (7) balance (5) resonator (3) mounted between a bar (2) and a bottom plate (4) wherein the balance (7) is formed from a ferromagnetic material. According to the invention, the timepiece movement includes a magnetic polarising device (15) for said balance spring for maintaining a predefined state of polarisation in the balance spring (7) and including permanent magnetising means which forms a magnetic field in the plane of the balance spring so as to totally or almost totally magnetically saturate the balance spring (7) in the absence of an external magnetic field. The invention concerns the field of timepieces.

Abstract: A method of forming a magnetic pole section of a perpendicular magnetic recording type thin-film magnetic head and a method of manufacturing a perpendicular magnetic recording type thin-film magnetic head that include forming on an under layer a resist pattern having an opening, forming a first nonmagnetic layer, forming a first magnetic layer forming a magnetic layer pattern, removing the resist pattern and then applying a resist layer onto a first nonmagnetic layer and a magnetic layer pattern, developing or ashing partway the applied resist layer and baking the remaining resist layer, removing the first nonmagnetic layer from at least a side surface of the magnetic layer pattern by etching with the baked resist layer being left, removing all of the resist layer and then forming a second nonmagnetic layer on at least the magnetic layer pattern, and forming a second magnetic layer on the formed second nonmagnetic layer.

Abstract: Regulating member for a wristwatch movement, including: a balance (1) comprising at least one mobile magnet (10); a magnetic return member comprising at least one fixed permanent magnet (2) engaging with said mobile magnet (10) of the balance, so as to generate a mechanical restoring torque for bringing said balance towards at least one resting position; an escapement (5, 6) for transmitting pulses to the balance so as to move said balance (1) away from said resting position; at least one yoke (3) made of a ferromagnetic material for concentrating the magnetic flux of at least one said permanent magnet.

Abstract: The invention concerns an escapement device comprising a power source capable of delivering a variable torque based on the angle of rotation of a pinion fixed to said power source, said variable torque having at least a stable position and an unstable position. The device further comprises locking means capable of locking power transmission to an oscillator in a stable point of equilibrium and unlocking means capable of unlocking power transmission to said oscillator between a stable point of equilibrium and an unstable point of equilibrium.

Abstract: A mechanically driven clock, watch, or other timing device having a mechanical energy generator supplying a driving force. A rotatable rotor engages with a driving force resulting in rotational force in a radial direction on the rotor. A magnetically permeable stator surrounds the rotor. The rotor has a permanent magnet supplying an attractive force on the stator at least as strong as the rotational force in order to retain or lock the rotor in position. A magnet field is electromagnetically induced in the stator to provide a rotational force in the rotor in the direction of the mechanical generator driving force sufficient to overcome the permanent magnetic force and allow the rotor to rotate, whereby rotation of the rotor will be regulated.

Abstract: An electric timer includes a rotatably mounted operating member which is movable from a datum position to any one of a plurality of angular positions which correspond to periods of time for which it is desired to set the time period. The operating member is urged to rotate in the direction towards the datum position when it is set to a desired angular position. A rotatably mounted toothed member is driven by the operating member when the operating member is urged back towards the datum position. A pivotable escapement member engages with the teeth of the toothed member, and an electro-magnet controls the pivoting of the escapement member and thereby the rotation of the toothed member and operating member. The electro-magnet comprises a permanent magnet for exerting a magnetic force to normally attract the escapement member, and a winding receptive of reference pulses to reduce the magnetic force exerted by the permanent magnet so as to permit the pivoting of the escapement member.

Abstract: An electronic timepiece including a battery, a drive motor, a drive, a display, and electronic circuits for driving said motor. The motor is a pulse motor and comprises a core, coil, yoke and rotor. The rotor includes a worm gear having worm teeth which engage with a gear wheel. The teeth on the worm gear are arranged and configured such that the initial and final portions of each tooth which engage with the gear wheel are parallel to the plane of rotation of the rotor thereby preventing torque applied to the gear wheel from being transmitted to the rotor.