Nivarox-Far S.a.

Daniel Vicente

Pierre Cusin

Emmanuel Graf

Daniel Mallet

Philippe Barthoulot

Philomène Berger

Frederic Tolle

Frédéric Tolle

A balance set for a timepiece, with inertia adjustment for adjusting inertia and/or balancing and/or oscillation frequency of the balance, with a balance including an insert inserted into a recess of a felloe connected to a hub by a joining surface. The balance includes on the felloe thereof an elastic holding mechanism including two antagonistic elastic lips which, when stressed, allow insertion of the insert into the recess and which, when released, prevent removal of the insert from the recess. A sprung balance or a timepiece can incorporate such a balance.

Balance with inertia adjustment using an insert

The invention concerns a timepiece balance (), with inertia adjustment including a hub () pivoting about a balance staff () and a felloe (), connected to said hub () by a joining surface (). It is wherein said felloe () is made in a single piece with said joining surface () and said hub () in a micro-machinable material, or silicon, or quartz, or a compound thereof, or an alloy derived from MEMS technology, or an alloy obtained by the 'LIGA' method, and in that it includes at least a first resilient arm () including coupling means () arranged for cooperating, in various coupling positions, with complementary coupling means () comprised in said felloe () to form, in the coupling position, a closed loop, the inertia of which relative to said balance staff () is variable according to said coupling positions. The invention also concerns a sprung balance or a timepiece incorporating a balance of this type.

Balance with inertia adjustment with no inserts

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Colombier, Switzerland

Daniel Vicente