Montres Breguet S.a.

Rolex Sa

Benoit Junod

Davide Sarchi

Polychronis Nakis Karapatis

Sylvain Marechal

Rene Piguet

Alain Zaugg

Benoit Legeret

Benjamin Celant

James Rejzner

Jean-Baptiste Robin

Marc Stranczl

Nakis Karapatis

Jan Pittet

Adrien Catheline

Stephane Beugin

Sylvain Dauby

Patrice Nagel

Sébastien Perseguers

The invention concerns a timepiece member including a first axis and a first threading intended to cooperate with 5 a second threading provided on a second timepiece member. The first threading is configured so that a zone of contact between the first threading and the second threading extends over less than 50% of the height of the threads of the second threading or is configured so that the zone of contact between the first 10 threading and the second threading extends over less than 0.3 times the pitch of the threading.

Threaded timepiece member

A timepiece component, having a first part and a removable cap, which is able to adopt a fastening configuration in which the removable cap is fastened to the first part, and a free configuration in which the cap is separated from the first part. The first part comprises at least two latching members intended to cooperate with at least two corresponding assembly members of the cap in the fastening configuration. The cap or the first part is elastically deformable from a rest position to a deformed position which allows for positioning and removing for passing from the fastening configuration to the free configuration of the timepiece component and vice versa. The rest position allows stably maintain the fastening configuration of the timepiece component in which the at least two assembly members of the cap are in engagement with the at least two latching members of the first part.

Timepiece component provided with a cap

The system () for fixing a timepiece movement () to a watch case () element () includes at least one clamp (), in particular at least two clamps, preferably three clamps or four clamps, which is intended to come into contact firstly with the movement and secondly with the watch case element, and a device (') for modifying the stiffness of the at least one clamp, particularly for modifying the bending stiffness of the at least one clamp, when the movement is fixed and/or displaced relative to the watch case element.

System for fixing a timepiece movement in a watch case

A timepiece glass, in particular a watch glass, wherein it comprises an optical device comprising at least one lens intended to enlarge an indication supplied by a timepiece, said lens comprising at least one aspherical face comprising at least one section passing through a vertical plane comprising an optical axis of vertical direction z, of which at least one outline can be defined by the following equation: in which R is the nominal radius of curvature, k is the constant of conicity, and &#x3b1;is or are coefficient(s) of asphericity, and in which at least the constant of conicity k and/or at least one coefficient of asphericity is different from zero.

Optical device for a timepiece

The system () for fixing a timepiece movement () to a watch case () element () comprises at least one clamp (), in particular at least two clamps, preferably three clamps or four clamps, which is intended to come into contact firstly with the movement and secondly with the watch case element, the at least one clamp being made of a superelastic alloy and/or of a shape memory alloy, particularly of a nickel-titanium alloy such as Nitinol.

A device that tests the chronometric precision of a watch movement or a watch includes a control device controlling a predefined cycle of motions passing through standard chronometric test positions, and a fine control device including a sequencer arranged to control the changes of chronometric test position of this movement, or respectively of this watch, in a multi-position sequence, after each measurement per position, and to start another multi-position sequence as soon as the preceding sequence finishes and which observes the predefined total duration of one cycle of several successive multi-position sequences. This sequencer is also arranged to manage the rate stabilisation durations, durations of measurement per position, and multi-position sequence durations.

Chronometric testing device

A sequencer mechanism including a rotatably driven locking wheel set including a peripheral holding surface of regular geometry or respectively of regular uniform magnetic polarity, arranged to hold immobile in rotation an opposite receiver wheel set, which is a reduced friction wheel including at the periphery thereof second stop elements, which are idle rollers or respectively magnets of the same polarity, cooperating in pairs with this holding surface on either side of a plane passing through the centres of the two wheel sets, the locking wheel set including a drive surface including an irregular relief portion or respectively an opposite magnetization and arranged to drive this receiver wheel set in jerks. A timepiece mechanism including such sequencer mechanism. A watch including such a timepiece mechanism and/or such a sequencer mechanism.

Wheel with reduced mechanical friction for timepieces

The mechanical timepiece movement includes an escapement having a pallet-lever arranged to move alternately into abutment with two banking elements in locking periods. The pallet-lever carries at least a first permanent magnet and the timepiece movement further includes a first element and a second element of high magnetic permeability and a second magnet and a third magnet respectively integral with first and second elements of high magnetic permeability and each arranged on an opposite side to a first magnet relative to the respective elements of high magnetic permeability. This magnetic system generates, in a first part of a first half vibration of any vibration of the pallet-lever, an overall force of magnetic attraction, defining a magnetic draw additional to the mechanical draw generated by the escape wheel, and, in a second part of this first half vibration, an overall force of magnetic repulsion.

Mechanical timepiece movement with a lever escapement

A timepiece torque variator mechanism regulates the torque ratio between a first path extending about a first pivot axis and a second path about a second pivot axis. The mechanism includes a planetary element that simultaneously cooperates in a first contact area with a first path and in a second contact area with a second path. The mechanism also includes a control device arranged to adjust the radial position of the first contact area with respect to the first pivot axis and/or to adjust the radial position of the second contact area with respect to the second pivot axis.

Mechanism for regulating the torque ratio between time-piece wheel sets

The timepiece comprises a timekeeping mechanism and a switching device arranged to switch this timekeeping mechanism between two states. The switching device comprises a movable switching organ and a rotary control organ arranged to be stepwise driven in order to successively occupy a plurality of distinct angular positions about its axis of rotation. The movable switching organ and the rotary control organ respectively support a first magnetic structure and a second magnetic structure arranged so that, in a first angular position of the rotary control organ, a first magnetic force acts on the switching organ in a given direction, and so that, in a second angular position of the rotary control organ, a second magnetic force acts on the switching organ in the opposite direction.

Timepiece comprising a device for switching a timekeeping mechanism

A timepiece sub-assembly including a mobile timepiece element including first and second annular and opposite peripheral surfaces of revolution about a same pivot axis, and a device for guiding pivoting about a theoretical axis of a timepiece mechanism. The first surface is magnetically or electrically charged, and the device includes at least three first surfaces regularly arranged around the theoretical axis, oppositely magnetically or respectively electrically charged to the first surface to repulse it at a first interface. In a watch, the second surface is magnetically or electrically charged, and the device includes at least three second surfaces regularly arranged around the theoretical axis, oppositely magnetically or electrically charged to the second surface to repulse it at a second interface.

Magnetic or electrostatic pivoting of a mobile timepiece element

A barrel includes a mainspring cooperating internally with a core, externally with a track of a drum by way of a resilient sliding bridle. The track and the bridle are of non-circular shape, nesting one inside the other in the free state of the bridle. The track and the bridle are arranged to make one raised portion of the bridle abuttingly engage with a sill of the track when the torque applied to the bridle is less than a torque limit value, and to allow radial constriction of the raised portion when the torque is greater than the limit value. The track and the bridle are arranged to allow the passage of the raised portion over the sill and to allow the bridle to travel angularly under the effect of the torque until the next encounter between the sill and the raised portion.

Timepiece barrel with improved transmission of force

An automatic winding device for a spring of a watch movement including a weight fixed on a support via a bearing including a ring which drives, in only one direction of rotation called the winding direction, a transmission gear in order to wind the mainspring, this winding device wherein, on the one hand, the bearing is of the one-way type and blocks the rotation of the weight in the opposite direction to the winding direction, called the blocking direction and wherein, on the other hand, the device includes a means for decoupling the weight from said bearing in at least the blocking direction when the weight exerts on the bearing a torque higher than a desired value.

Mechanical winding device for a watch

Portable object provided with a mechanism for measuring atmospheric pressure, the atmospheric pressure measuring mechanism including an atmospheric pressure sensor whose geometric dimensions vary with atmospheric pressure fluctuations, the variations in the geometric dimensions of the atmospheric pressure sensor being applied to a device displaying a barometric tendency connected to the atmospheric pressure sensor via a coupling mechanism actuated by a user, the coupling mechanism being capable of being switched between a first position, in which the kinematic connection between the atmospheric pressure sensor and the barometric tendency display device is interrupted, and a second position in which the barometric tendency display device is kinematically coupled to the atmospheric pressure sensor.

Portable object provided with a device for measuring atmospheric pressure

The invention concerns a method for adjusting the vibration frequency range of a sound producing device with vibrating tongues. The device includes an assembly formed of a comb extended by at least one vibrating tongue, said comb having at least one hole for the securing thereof to a support by means of a support jaw and of a tightening element traversing the support jaw and the hole in the aforecited comb. According to the method, the frequency range is adjusted by reducing the free length of the vibrating tongue or tongues by the localized clamping of said tongues between the support jaw and a local counter-support.

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Peillonnex, France

Benoit Junod