Patents Assigned to API Portescap
  • Stepping motor
    Patent number: 6509663
    Abstract: A stepping motor comprises a stator (3) with at least two magnetic circuits and a rotor (2) that is rotatably mounted on the stator through a single ball bearing having four contact points. The rotor comprises a mutipolar magnet (5) essentially in the form of a disc having a central opening (6). One rotor portion (7) is fixed at one radially external portion of the magnet (5), while one radially internal portion of the magnet is arranged within the air gap of said magnetic circuits.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: January 21, 2003
    Assignee: API Portescap
    Inventor: Magdi Laoun