The Swatch Group Research and Development Ltd

Milan Calic

Matthias Imboden

Jean-Jacques Born

Cédric Nicolas

Jean-Pierre Mignot

Stewes Bourban

Nicolas Francois

Claire Rannoux

François Gueissaz

Alain Jornod

Nicolas François

A mechanism () including a magnetic gear () including a first wheel (B) and a second wheel (C) provided with a first magnetic toothing () and a second magnetic toothing () respectively. The first and second magnetic toothings are respectively formed by first and second teeth made of a soft ferromagnetic material; and the magnetic gear () further includes a third wheel (A) arranged between the first and second wheels (B,C) and provided with a third magnetic toothing () formed by permanent magnetic poles, in particular by bipolar magnets. In general, the first wheel is a drive wheel, whereas the second wheel is driven into order to carry out a function or transmit a torque. The third intermediate wheel is preferably mounted such that it can rotate freely.

Timepiece mechanism provided with a magnetic gear

A wearable object () including an electronic unit and a power supply unit formed by an electromechanical converter (A) which includes a rotor () carrying first magnets (A), a mechanical resonator (A) provided with an inertia mass () capable of oscillating at a relatively high resonant frequency and carrying second magnets (), and coils arranged so that, when the mechanical resonator is oscillating, an induced voltage is generated in these coils. The electromechanical converter is arranged so that the first magnets and the second magnets can, during a rotational drive of the rotor, interact magnetically so as to apply to the inertia mass, momentarily or temporarily, a magnetic force torque allowing to excite the mechanical resonator, in order to generate at least one oscillation of this mechanical resonator at its resonant frequency in order to generate a relatively high induced voltage allowing to recharge an accumulator.

Wearable object, in particular watch bracelet, comprising a power supply device provided with an electromechanical converter

A mechanism including a magnetic gear including a first wheel, a second wheel and a third wheel. The first wheel is provided with permanent magnetic poles which are arranged so as to form the magnetised teeth of a first magnetic toothing. The second wheel and the third wheel are provided with teeth made of a soft ferromagnetic material respectively defining a second magnetic toothing and a third magnetic toothing, each with a number of teeth that is greater than that of the first magnetic toothing and having a magnetic coupling with this first magnetic toothing. The second magnetic toothing is directly coupled with the first magnetic toothing and with the third magnetic toothing thanks to the magnetic fluxes provided by the magnetised teeth of the first toothing and the teeth of the second magnetic toothing are magnetically separated from one another.

An exterior element for portable objects including a support, on which is arranged a first material, the first material being chosen to be capable of reflecting different visible wavelengths as a function of applied stress.

Growing community of inventors

Lausanne, Switzerland

Milan Calic