Patents by Inventor Philippe SAUVAIN

Philippe SAUVAIN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11815857
    Abstract: A horological movement provided with a generator and a circuit for regulating the frequency of rotation of this generator, the regulation circuit being arranged to be able to detect the zero crossings of an induced voltage generated in the stator by the rotating rotor and to generate first braking pulses which are triggered after zero crossings and each end before the induced voltage reaches a peak value, preferably before the rectified induced voltage reaches a power supply voltage provided by a power supply capacity. In addition, the regulation circuit is arranged so as to be able to further generate second braking pulses each of which occurs after detection of the end of a charging period of the power supply capacity during which the induced voltage reaches a peak value and each end before the induced voltage crosses zero.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: November 14, 2023
    Assignee: The Swatch Group Research and Development Ltd
    Inventors: Jean-Jacques Born, Philippe Sauvain, Stéphane Perrier, Olivier Matthey
  • Publication number: 20220179361
    Abstract: A horological movement provided with a generator and a circuit for regulating the frequency of rotation of this generator, the regulation circuit being arranged to be able to detect the zero crossings of an induced voltage generated in the stator by the rotating rotor and to generate first braking pulses which are triggered after zero crossings and each end before the induced voltage reaches a peak value, preferably before the rectified induced voltage reaches a power supply voltage provided by a power supply capacity. In addition, the regulation circuit is arranged so as to be able to further generate second braking pulses each of which occurs after detection of the end of a charging period of the power supply capacity during which the induced voltage reaches a peak value and each end before the induced voltage crosses zero.
    Type: Application
    Filed: November 19, 2021
    Publication date: June 9, 2022
    Applicant: The Swatch Group Research and Development Ltd
    Inventors: Jean-Jacques BORN, Philippe SAUVAIN, Stéphane PERRIER, Olivier MATTHEY