Montres Breguet S.a.

Jean-Philippe Rochat

Alain Zaugg

Davide Sarchi

Benoit Legeret

Stefan Rombach

Vincent Laucella

Marco Verardo

Dominique Lechot

Polychronis Nakis Karapatis

Deirdre Lenoir

Nicolas Georges Hayek

Benoît Légeret

Camille Tadla

Philippe Poux

Dominique LÉCHOT

Benoît Legeret

Deirdré Lenoir

A system () for resetting a chronograph is provided with a chronograph counting geartrain (), which includes a minute counter having a minute wheel set (), and a seconds counter, which includes a chronograph wheel set (). The system includes a hammer held blocked by blocking device () and displaceable from an inactive position, where the hammer is blocked by the blocking device, and an active position, when the hammer is unblocked, for resetting the chronograph in contact with the various wheel sets (); a flexible element () connected between a reset controller () and the hammer for resetting the chronograph, and configured to store energy during a displacement of the controller and before unblocking the hammer blocked by the blocking device to be able, when the hammer is unblocked, to restore this stored energy and drive the hammer to reset the chronograph.

Chronograph reset system

A chronograph mechanism includes an energy accumulator, a regulating system, and a gear train connecting the energy accumulator to the regulating system. The energy accumulator is formed by a strip-spring and includes a device for driving the gear train arranged to regulate the torque delivered by the strip-spring.

Chronograph mechanism

A correction mechanism for a timepiece date display mechanism, arranged to change the angular position of a display wheel set comprised in such a date display mechanism, this correction mechanism includes, on the one hand, a control wheel set arranged to be controlled by user action and/or by a timepiece mechanism, and on the other hand, an output wheel set arranged to cooperate with such a display wheel set; this correction mechanism includes a free wheel mechanism which is arranged to disengage the output wheel set from the control wheel set in a first relative direction of rotation, and to engage the output wheel set with the control wheel set in a second relative direction of rotation opposite to the first relative direction of rotation.

Timepiece display correction mechanism

A magnetic device for centring a shaft on a predetermined axis in a clockwork movement includes at least one first magnetic bearing provided with a magnet to exert an attractive force on a first ferromagnetic end pivot of the shaft. The first magnetic bearing includes a central part made of soft ferromagnetic material mounted between the magnet and the first end pivot of the shaft. The central part is positioned centrally in a washer made of non-magnetic material so as to centre the magnetic field flux generated by the permanent magnet through the central part in order to magnetically attract the first end pivot of the shaft on the predetermined axis. The diameter of the central part can be identical to, or 0 to 20% less than, or 0 to 20% greater than, the diameter of the first end pivot.

Magnetic device for centring a shaft in a clockwork movement

A mechanical watch movement includes a striking mechanism with a first cannon equipped with a first cannon pinion having at least one snail intended to cooperate with a sensor device of the striking mechanism. The watch also includes a second cannon equipped with a second cannon pinion and carrying the minute hand. The first cannon pinion engages with a going train of the movement and a minute wheel. The minute wheel engages with the first cannon pinion. A motion-work pinion engages with an hour wheel coaxial with the second cannon. The minute wheel is mounted on a lever arranged to pivot about a fixed point. An angular position of the lever may be adjusted by pivoting in such a way as to permit regulation of the position of the minute wheel with respect to the first cannon pinion and to the second cannon pinion.

Mechanical watch movement comprising a striking mechanism

Sub-assembly for watches, including an arbor including a magnetized or electrically charged surface pivoting inside a housing, and a pole piece subjecting this surface to a magnetic or electrostatic field about an axis, one pole piece cooperating axially with this surface to absorb a shock and then return the arbor to an operating position, and creating, in proximity to this surface, a magnetic or electrostatic field, which radially attracts the arbor towards a wall of the housing.

Magnetic anti-shock system for a timepiece arbor

The vertical coupling/uncoupling device includes a switching member and a control member, the latter being arranged to pivot about an axis of rotation to be able to be driven in rotation step-by-step successively into a plurality of distinct angular positions. The control member and the switching member respectively include a first magnetic structure and a second magnetic structure arranged to exhibit a magnet interaction therebetween. These first and second magnetic structures are arranged such that, depending on the angular position of the control member, a first magnetic force or a second magnetic force is produced, these first and second magnetic forces being oriented along said axis of rotation but in opposite directions. The switching member is subjected to an alternate movement between its first and second stable axial positions when the second magnetic structure is driven in rotation step-by-step in said given direction of rotation.

Timepiece comprising a device for switching a mechanism of said timepiece

Magnetic centring device for micromechanical applications, including a magnet and a magnetic flux conduction device arranged on the magnet, the magnetic flux conduction device including a central magnetic flux conduction disc made of a magnetic material having high magnetic permeability, and a peripheral area arranged around the central disc and separated from the central disc by a non-zero distance.

Magnetic centring device

A chronograph mechanism including an energy accumulator, a regulating system, a chronograph counter train including a minute-counter having a minute wheel set and at least one minute indicator member, and a seconds-counter having a seconds wheel set and a seconds indicator member, a chronograph zero-reset mechanism including a minute zero-reset mechanism. The minute zero-reset mechanism is arranged to cooperate with the minute wheel set, the minute indicator member being permanently integral with the minute wheel set, and the chronograph counter train includes an uncoupling device between the minute-counter and the seconds-counter, arranged to kinematically connect the minute wheel set and the seconds wheel set during the counting and to uncouple the seconds wheel set from the minute wheel set when the chronograph mechanism is reset to zero.

A balance spring including a first hairspring, the inner coil of which includes a collet arranged to be mounted on a staff, and a second hairspring connected to the outer coil of the first hairspring by a raised terminal curve device. The inner coil of the second hairspring includes a device for shifting the pinning point including a free end arranged to be pinned up to a stud in the plane of the second hairspring.

Balance spring with two hairsprings

The invention pertains to the field of high frequency watch movements. The invention relates to a timepiece including a movement that has a resonator of the type with a balance and balance spring and an escape system of the type with a wheel and Swiss lever. According to the invention, the balance oscillates at more than 36,000 vibrations per hour and the escape system is at least partially pierced to decrease the inertia thereof.

Timepiece including a high frequency mechanical movement

The timepiece display device includes a rotating analogue indicator member (), a first counter wheel set () and a second counter wheel set (), whose positions are respectively representative of two magnitudes to be displayed by said indicator member (), and a switch mechanism () with manual control () for selectively displaying the first or second magnitude via the indicator member. The display device is characterized in that the switch mechanism includes a rotating arbour () kinematically connected to the indicator member () and a sliding wheel set () secured to the arbour in rotation and provided for sliding, via the action of the manual control device (), so as to selectively occupy on the arbour () a first axial position, in which the sliding wheel set () is coupled with the first counter wheel set (), and a second axial position, in which the sliding wheel set () is coupled with the second counter wheel set ().

Growing community of inventors

Les Bioux, Switzerland

Jean-Philippe Rochat