Patents by Inventor Nicolas Samman

Nicolas Samman 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).

  • Low ripple-torque permanent magnet brushless motor
    Patent number: 4918346
    Abstract: The stator comprises three phase driving coils and an electric commutator for controlling current to the driving coils. The rotor comprises permanent magnets which are alternately magnetized in N polarity and S polarity. Driving torque is generated corresponding to the current flowing through the driving coils and the permanent magnets. On the surface of the permanent magnet facing to the driving coils, two non-magnetizing portions are provided in each permanent magnet having either N or S polarity.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: April 17, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Fumio Tajima, Nicolas Samman, Kunio Miyashita, Hiroshi Katayama, Motoya Ito, Seiichi Narushima, Kiyoshi Yamamuro