Cartier Creation Studio Sa

Cartier International Ag

Patrick Pichot

Carole Kasapi

Armando Valente

The mechanism preventing rate variations caused by the effect of gravity on a regulating member () of a timepiece movement comprises a regulating member comprising a balance-spring () and an escapement wheel () which are mounted on a platform (). This platform () comprises an unbalance and is mounted so as to freely rotate about at least one first axis (A-A) with respect to a plate () of the movement so that the platform () rotates about said first axis (A-A) under the effect of the Earth's gravity. The mechanism comprises a going train comprising a kinematic drive chain (M) arranged to connect the escapement wheel () to a barrel system () of the timepiece as well as a kinematic correcting chain (C) which compensates for the displacements and speed of the platform () with respect to the plate (). This mechanism is characterized in that it further comprises a regulator device comprising a regulator member () connected to the platform () and driven by the relative movements between the platform () and the plate () of the timepiece movement.

Mechanism preventing rate variations caused by gravity on a balance-spring regulating device and timepiece incorporating this improvement

The mechanism avoids the rate variations due to the effect of gravitation on a regulating organ of a timepiece whose regulating organ includes a sprung balance and an escape wheel mounted onto a platform. The platform includes a counterweight and is mounted so as to freely rotate about at least a first axis relative to a plate of the movement so that this platform will rotate about the first axis under the effect of terrestrial gravitation. This mechanism includes a wheelwork with a driving kinematical chain linking the escape wheel to a barrel system of the timepiece, and a corrective kinematical chain compensating the movements and speed of the platform relative to the plate, so that these movements of the platform will not perturb the chronometry of the timepiece.

Mechanism to avoid rate variations due to gravitation in a sprung balance regulating organ, and timepiece provided with such a mechanism

The mechanism avoids the rate variations due to the effect of gravitation on a regulating organ of a timepiece whose regulating organ includes a sprung balance and an escape wheel mounted onto a platform. The platform includes an unbalance and is mounted so as to freely rotate about at least a first axis relative to a plate of the movement so that this platform will rotate about the first axis under the effect of terrestrial gravitation. This mechanism includes a wheelwork with a driving kinematical chain linking the escape wheel to a barrel system of the timepiece, and a corrective kinematical chain compensating the movements and speed of the platform relative to the plate, so that these movements of the platform will not perturb the chronometry of the timepiece, this wheelwork including one or several epicycloidal gear trains, each of which contains wheels with straight toothing exclusively.

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Villers le lac, France

Patrick Pichot