Richemont International S.a.

Mps Micro Precision Systems Ag

Chronode Sa

Conex Watches Sa

Jean-François Mojon

Norberto Perucchi

Pierre-André Finazzi

Kilian Eisenegger

Xavier Clement

Léonard Vogel

Théo Chambaraud

An automatic pawl winding mechanism for a watch movement has a rotor solidly attached to a rotor wheel and oscillating about the axis of a rotor pivot, a pawl wheel to which an oscillating motion of rotor is transmitted by the rotor wheel being pivoted about the axis of a pawl wheel shaft, at least one pawl being eccentrically attached to the pawl wheel shaft, and an automatic wheel cooperating with the pawl or pawls. The oscillating motion of the rotor wheel is thus transformed into a unidirectional rotary motion of the automatic wheel, and this rotary motion is transmitted to a ratchet wheel via a transformation gear train. The rotor, the gear train from the rotor with rotor wheel to the pawl wheel with the pawl or pawls is mounted on an independent rotor bridge while no other organ of the mechanism is mounted on this bridge.

Automatic pawl winding mechanism

The present invention refers to a constant-force device suitable for being integrated into a movement of watches, particularly wrist watches, with an indirect-second mechanism having an intermediate second pinion () driven by a second wheel () of the movement, and an indirect-second wheel (). The constant-force device comprises a tensioning module (), a cam (), a lever (), and a stop wheel (). The stop wheel () of the constant-force device is mounted on the intermediate second pinion () of the indirect-second mechanism.

Constant-force device for indirect-second watches

A constant-force device for precise regulation of mechanical watch movements by means of a uniform transmission of force from the escape wheel to the regulating organ of the watch, this device being adapted to be integrated into a Tourbillon mechanism.

Constant-force device

Growing community of inventors

Les Hauts-Geneveys, Switzerland

Jean-François Mojon