Patent ID: 7891862

Claim:
An electromechanical escapement device, as a component of a mechanical timepiece movement including a mechanical oscillator comprising: an escapement wheel, mechanical blocking means mounted on an axis, mechanical release means mounted on another axis, an electromechanical converter comprising a stator in a magnetic material, a rotor as a permanent magnet and a coil, mechanical driving means connecting both axes as well as the rotor, the blocking means being able to periodically immobilize the escapement wheel according to well-determined angular positions, the mechanical release means being able to release the escapement wheel until the next blocking position, synchronously with the mechanical oscillator, the escapement wheel being able, upon pivoting between two successive blocking positions, to provide the energy required by the mechanical oscillator in order to sustain its oscillatory movement on the one hand, and to cause the blocking device to pivot on the other hand, causing pivoting of the rotor via the mechanical driving device, thereby providing electric energy to the coil, said electromechanical escapement device being associated with an electronic circuit including a quartz time base, said electronic circuit being able to provide a set of electric pulses to the coil, in order to control a pivoting of the rotor causing pivoting of the blocking means and release of the escapement wheel right up to its next blocking position, independently of the frequency of the mechanical oscillator.