Patents by Inventor Francis Besson

Francis Besson 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).

  • Electric rotary stepping motor
    Patent number: 4186322
    Abstract: An electric rotary stepping motor intended for use in watch movements comprises a stator including a coil support coaxial with the rotor, two compact coils having flat turns, and a field-closing yoke capable of magnetically blocking the rotor in a position enabling it to start up in the desired direction. The motor is made more compact, and its manufacture and assembly are simplified, by designing the coil support with two diametrically opposed arms and the coils as self-supporting elements in which the turns of the windings are joined to one another.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: January 29, 1980
    Assignee: Girard-Perregaux S.A.
    Inventor: Francis Besson
  • Wristwatch
    Patent number: D321144
    Type: Grant
    Filed: November 2, 1988
    Date of Patent: October 29, 1991
    Assignee: Girard-Perregaux, S.A.
    Inventor: Francis Besson
  • Watch
    Patent number: D352470
    Type: Grant
    Filed: August 6, 1992
    Date of Patent: November 15, 1994
    Assignee: Girard-Perregaux SA
    Inventor: Francis Besson
  • Watch
    Patent number: D352471
    Type: Grant
    Filed: August 6, 1992
    Date of Patent: November 15, 1994
    Assignee: Girard-Perregauz SA
    Inventor: Francis Besson