Eta Sa Manufacture Horlogere Suisse

The Swatch Group Research and Development Ltd

Montres Breguet S.a.

Nivarox-far S.a.

Omega Sa

Csem Centre Suisse D'electronique Et De Microtechnique Sa&#x2014;recherche Et D&#xe9;veloppement

Montres Brequet Sa

Eta Sa Manfacture Horlogére Suisse

Csem Centre Suisse D'electronique Et De Microtechnique Sa

Thierry Conus

Marco Verardo

Jean-Luc Helfer

Andrés Cabezas Jurin

Jean-Bernard Peters

Jean-Philippe Thiebaud

Pierre Cusin

Thierry Hessler

Ivan Villar

Jean-Jacques Born

Pascal Winkler

Andres Cabezas Jurin

Gianni Di Domenico

Laurent Kaelin

Julien Christan

Pierre-André Bühler

Michel Willemin

Marc Lippuner

Nicolas Georges Hayek

Alain Zaugg

Emmanuel Graf

Laurent Klinger

Kaspar Trumpy

Christian Charbon

Davide Sarchi

Dominique Lechot

Jean-Claude Martin

Eric Goeller

Jérôme Favre

Emmanuel Fleury

Lionel Paratte

Marco Rochat

Philippe Dubois

Arthur Queval

Sylvain Marechal

Frédéric Maier

Raphael Courvoisier

François Gueissaz

Raphaël Courvoisier

Philippe Marmy

Igor Saglini

Cedric Decosterd

Benjamin Krähenbühl

Kaspar Truempy

Frederic Kohler

Jan Pittet

Roman Egli

Patrick Ragot

Antonio Merino

Raymond Gabus

Jean-Charles Fiaccabrino

Florent Strahm

Laurent Jeanneret

Xavier Berdat

Jacques Jacot

Jean-Phillipe Thiebaud

Cédric Decosterd

Sebastien Lani

Emmanuel Dupas

Andréas Cabezas Jurin

Frédéric Kohler

Sébastien Gass

Paul Ris

Michael Reber

Maxence Perret-Gentil

Kaspar Trümpy

Pierre-André Buhler

Jean-Claude Eggen

René Rappo

Patrick Gasser

Thorsten Kramer

Julien Christian

Cédric Decorsterd

Sylvain MARÉCHAL

Kaspar TRÜMPY

Jean-Philippe THIÉBAUD

Jurin Andrés Cabezas

A balance of a timepiece including an adjustment face provided with at least one recess provided for receiving a projected material for an implementation of an adjustment of the rate of the timepiece notably by the modification of the inertia and of the unbalance of the balance, the recess including an opening and a back notably a solid back or a back fully or partially forming an orifice, the back being at most partially visible from a position defined above the opening notably on a central axis of the opening.

Balance of a timepiece

A shock-absorber device for a wheel arbor of a micromechanical device includes a support which includes a turning-arbor delimited by a rim defining a housing into which a pivot module is inserted. The pivot module includes a setting having a central orifice into which is inserted a bored stone. An endstone is placed on top of the bored stone. The shock-absorber device also includes a spring ring arranged between the support and the pivot module. The shock-absorber device is equipped with a bayonet system for mounting the spring ring. The bayonet system includes a peripheral shoulder under which is formed a circular groove which defines a holding area. The spring ring is equipped on an outer periphery with at least one catch. At least one first notch which leads to the circular groove is provided in the peripheral shoulder.

Angular locking shockproof system

A method for adjusting a rate of a timepiece after encasing a movement to ensure a better rate for the timepiece.

Timepiece rate adjustment method

The invention relates to a balance-spring stud-holder for a mechanical timepiece movement, which comprises a pair of tabs, namely a front tab and a rear tab, jointly defining a notch, the tabs being arranged in such a way that a balance-spring stud can be held in the notch, wherein the rear tab of the balance-spring stud-holder comprises an extension which defines, beyond the notch, a bend forming a retaining abutment for the balance-spring stud after said balance-spring stud has been extracted from the notch.

Balance-spring stud-holder for a mechanical timepiece movement

The spiral includes turns of rectangular section, whose pitch p and/or thickness e can vary from the inside curve towards the outside curve, or whose winding can deviate from the line of a perfect spiral. The inside curve can also be extended by a self-locking washer for fixing the spiral on the balance arbour with no play. The spiral is manufactured by photolithography and galvanic growth, or by micro-machining an amorphous or crystalline material, such as a silicon wafer.

Spiral spring for a sprung balance spiral resonator and method for manufacturing the same

A temperature-compensated resonator including a body used in deformation, and a core of the body is formed by a material that is one of glass, ceramic glass, technical ceramic, and metallic glass. At least one part of the body includes a coating whose Young's modulus variation with temperature is of an opposite sign to that of the material used for the core, so that at least a first order frequency variation with temperature of the resonator is substantially zero.

Ceramic temperature-compensated resonator

The present invention concerns an assembly for holding or supporting a timepiece balance spring, comprising a balance spring stud and a balance cock on which is fixed a balance spring stud-holder, wherein said stud-holder comprises a holding means provided with a housing for housing the balance spring stud therein and a gripping means, at least said gripping means being movable with respect to the holding means in order to lock the balance spring stud inside its housing.

Balance spring stud-holder with secure assembly

A method of setting inertia of and/or poizing a timepiece sprung balance assembly including: manufacturing a balance and a balance spring irreversibly assembled to each other; fixing an outer coil of the balance spring in position in a tamperproof manner to a balance spring stud which is immobilized in a tamperproof manner by irreversible attachment to a balance cock; determining a peripheral surface of the balance, every point of which is remote from the balance spring by a first predefined distance; performing a re-machining operation only on the peripheral area.

Inertia setting or poising of a timepiece sprung balance assembly

Method for attachment of a last outer coil of a timepiece balance spring inside a groove provided in a balance spring stud, wherein the method includes the step of adhesive bonding the last outer coil of the timepiece balance spring by means of a fluid adhesive whose viscosity is comprised between 200 and 400 mPa&#xb7;s.

Method for attachment of a balance spring for a mechanical timepiece movement and balance spring attached by such a method

A watch including a movement including itself an isochronous timepiece oscillator mechanism including a fixed support bearing a crosspiece carrying N primary resonators each including a weight carried by a rotating flexible bearing fixed to this crosspiece. Each primary resonator has a center of mass which, at rest, is on the virtual pivot axis of its rotating flexible bearing and is arranged to oscillate in rotation about this virtual pivot axis. The primary resonators are arranged in rotational symmetry of order N about a main axis parallel to the virtual pivot axes, and oscillating motions of any two primary resonators are phase shifted by the value of the central angle formed by their respective virtual pivot axes with the main axis.

Isochronous timepiece resonator

The mechanical timepiece movement includes at least one barrel, a set of gear wheels driven at one end by the barrel, and an escapement mechanism of a local oscillator with a resonator in the form of a sprung balance and a feedback system for the timepiece movement. The escapement mechanism is driven at another end of the set of gear wheels. The feedback system includes at least one precise reference oscillator combined with a frequency comparator to compare the frequency of the two oscillators and a mechanism for regulating the local oscillator resonator to slow down or accelerate the resonator based on the result of a comparison in the frequency comparator.

Mechanical timepiece movement provided with a feedback system for the movement

A mechanical clock movement includes a resonator, an escapement linked to the resonator, and a display of at least one item of time information. The display is driven by a mechanical drive device via a counter wheel train, the work rate of which is set by the escapement. At least the resonator is housed in a chamber, in which a reduced pressure in relation to atmospheric pressure prevails. The escapement is a magnetic escapement including an escape wheel coupled directly or indirectly to the resonator via a non-contact magnetic coupling system, wherein the magnetic coupling system is formed so that a non-magnetic wall of the chamber runs through the magnetic escapement so that a first part of the escapement is located inside the chamber whereas a second part of the escapement is located outside the chamber.

Mechanical clock movement with magnetic escapement

Wristwatch comprising a mechanical device for executing a first mechanical function arranged to produce a first acoustic alarm signal, and an electronic device housed in a bracelet and arranged to produce a second acoustic alarm signal and/or a mechanical vibration, wherein the electronic device is arranged to produce the second acoustic alarm signal at the moment when the mechanical device for executing the first mechanical function produces the first acoustic alarm signal.

Mechanical wristwatch bracelet with which an electronic function is associated

The present invention concerns an assembly for holding or supporting a timepiece balance spring including a balance spring stud and a stud-holder, wherein said stud-holder includes:

Balance spring stud-holder

A balance spring includes a strip of polygonal section wound on itself into several coils. At least one coil of the balance spring includes a coil spacer device including at least four stop members mounted on the same face and protruding from the thickness of the at least one coil of the strip. Each of the at least four stop members is arranged to enter into contact with the opposite face of another coil of the strip preventing the other coil from touching the at least one coil in the event of a shock.

Balance spring with coil spacer device

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Lengnau, Switzerland

Thierry Conus