A micro-electromechanical systems (MEMS) driving arrangement for an electronic device, the micro-electromechanical systems (MEMS) driving arrangement including a driven wheel; a driving actuation assembly for causing rotation of the driven wheel; an indicator assembly including an indicator; and a force absorbing assembly coupled intermediate the indicator assembly and the driven wheel; whereby a force acting upon the indicator assembly is absorbed by the force absorbing assembly so as to inhibit rotation of the driven wheel relative to the driving actuation assembly.

The invention relates to a skeleton watch including: a case middle; a movement including: a frame; time display means; a reduction mechanism meshed with the time display means; a motor including: an electromagnet; a stator; a rotor bearing a pinion meshed with the reduction mechanism; an electronic circuit including: a piezoelectric quartz; a control circuit connected to the quartz and to the stator by means of electrical conductors; an additional plate which carries the electronic circuit, said additional plate being distinct from the back cover and fixed to the frame.

The invention relates to a skeleton watch including: a case middle; a movement including: a frame; time display means; a reduction mechanism meshed with the time display means; a motor including: an electromagnet; a stator; a rotor bearing a pinion meshed with the reduction mechanism; an electronic circuit including: a piezoelectric quartz; a control circuit connected to the quartz and to the stator by means of electrical conductors; an additional plate which carries the electronic circuit, said additional plate being distinct from the back cover and fixed to the frame.

The present invention relates to a watch comprising a clock generator arrangement, a gear train, a drive device for driving the gear train, and a watch display device, which is connected to the gear train. The clock generator arrangement has a clock generator, an electronic useful signal generating device and an electromechanical device. Here, the clock generator has a predetermined oscillation frequency. The electronic useful signal generating device is set up to generate a useful signal based on the oscillation frequency of the clock generator. The electromechanical device is movable using the useful signal generated by the electronic useful signal generating device, whereby the electromechanical device engages directly or indirectly with the gear train in a clocked manner. The watch display device is movable by the gear train.

The present invention relates to a watch comprising a clock generator arrangement, a gear train, a drive device for driving the gear train, and a watch display device, which is connected to the gear train. The clock generator arrangement has a clock generator, an electronic useful signal generating device and an electromechanical device. Here, the clock generator has a predetermined oscillation frequency. The electronic useful signal generating device is set up to generate a useful signal based on the oscillation frequency of the clock generator. The electromechanical device is movable using the useful signal generated by the electronic useful signal generating device, whereby the electromechanical device engages directly or indirectly with the gear train in a clocked manner. The watch display device is movable by the gear train.

The invention relates to a watch, in particular a wristwatch, which comprises a clock generator arrangement and a watch case, in which the clock generator arrangement is arranged. The clock generator arrangement comprises a clock generator. The clock generator comprises a piezoelectric oscillation crystal and electrodes, wherein the piezoelectric oscillation crystal has a length, a width and a height each of at least 1 mm, preferably of at least 1.5 mm.

The invention relates to a watch, in particular a wristwatch, which comprises a clock generator arrangement and a watch case, in which the clock generator arrangement is arranged. The clock generator arrangement comprises a clock generator. The clock generator comprises a piezoelectric oscillation crystal and electrodes, wherein the piezoelectric oscillation crystal has a length, a width and a height each of at least 1 mm, preferably of at least 1.5 mm.

A wearable object (42) including an electronic unit and a power supply unit formed by an electromechanical converter (6A) which includes a rotor (44) carrying first magnets (10A), a mechanical resonator (12A) provided with an inertia mass (46) capable of oscillating at a relatively high resonant frequency and carrying second magnets (20), 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.

A wearable object (42) including an electronic unit and a power supply unit formed by an electromechanical converter (6A) which includes a rotor (44) carrying first magnets (10A), a mechanical resonator (12A) provided with an inertia mass (46) capable of oscillating at a relatively high resonant frequency and carrying second magnets (20), 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.

A method for manufacturing a resonator in a substrate, including: a) modifying a structure of at least one region of the substrate to make the at least one region more selective; b) etching the at least one region to selectively manufacture the resonator.