Rolex Sa

Frédéric Burger

Richard Bossart

Jean-Louis Bertrand

Olivier Hunziker

Benoit Boulenguiez

Denis Favez

Marc Cerutti

Vanessa Chauveau

Aziz Mbaye

Benoît Boulenguiez

Method of assembly of a watch pivot device () or a watch mechanism () or a watch movement () or a timepiece (), the watch pivot device () or the watch mechanism () or the watch movement () or the timepiece () comprising a pivot () and a bearing (), the method comprising the following stages: (i) supplying the pivot (); (ii) supplying the bearing (); (iii) applying, to at least one surface () of the pivot and/or of the bearing, a lubricant of which the kinematic viscosity at a temperature of 20&#xb0; C. is greater than 1.5 St; and (iv) positioning the pivot in the bearing.

Watch pivot device

A method for determining an imbalance characteristic of a hairspring () balance () oscillator () of a timepiece movement (), the method comprising at least the following steps: &#x2014;Setting the hairspring balance oscillator in an oscillating motion at at least two amplitudes, &#x2014;Determining, for each amplitude and for at least two positions of the oscillator, a piece of data representative of the oscillation period of the oscillator, &#x2014;Using the data from the previous step to calculate the imbalance characteristic of the hairspring balance oscillator.

Method for determining an imbalance characteristic of an oscillator

A shock-absorber body () for an assembled balance () of a horological oscillator (), comprising a guiding portion () for the shock-absorber body () for its mounting on a bridge () and a fastening element () for an outer end of a spiral spring () of the oscillator.

Shock absorber body for a balance of a horological oscillator

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Petit-Lancy, Switzerland

Frédéric Burger