Patents by Inventor Atef Abou Akar

Atef Abou Akar 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).

  • Rotary electric machine with reduced torque ripple
    Patent number: 7692354
    Abstract: The present invention relates to a rotary electric machine comprising: a concentrated winding stator having teeth and coils placed on the teeth, the teeth having end faces that are convex towards the rotor; and a rotor comprising an armature defining a cylindrical surface and permanent magnets, the permanent magnets having inside faces that are cylinder portions matching the shape of the cylindrical surface of the armature, and outside faces that are plane and that face towards the stator.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: April 6, 2010
    Assignee: Moteurs Leroy-Somer
    Inventors: Atef Abou-Akar, Eric Coupart
  • Synchronous electrical machine comprising a stator and at least one rotor, and associated control device
    Patent number: 7388310
    Abstract: The invention relates to a synchronous electric motor comprising a stator (10) and at least one rotor (20) with permanent magnets (21), characterized by an embodiment with Xd>Xq; where Xd is the direct reactance and Xq the quadrature reactance.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: June 17, 2008
    Assignee: Moteurs Leroy-Somer
    Inventors: Atef Abou-Akar, Jacques Saint-Michel
  • Rotary electric machine comprising a stator and two rotors
    Patent number: 7250702
    Abstract: The invention relates to an electric machine comprising a stator (10, 40) provided with a plurality of teeth (11, 41), each tooth supporting at lest one individual coil (13, 46, 47), an external rotor (30) which is radially arranged outside the stator and provided with constant magnets, an internal rotor (20) radially arranged inside the stator, provided with constant magnets and connected to the external rotor (30). At least one of the external (30) and internal (20) rotors is disposed in a flux concentration.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: July 31, 2007
    Assignee: Moteurs Leroy-Somer
    Inventors: Atef Abou Akar, Eric Coupart, Jacques Saint-Michel
  • Rotary electric machine with reduced torque ripple
    Publication number: 20070126308
    Abstract: The present invention relates to a rotary electric machine comprising: a concentrated winding stator having teeth and coils placed on the teeth, the teeth having end faces that are convex towards the rotor; and a rotor comprising an armature defining a cylindrical surface and permanent magnets, the permanent magnets having inside faces that are cylinder portions matching the shape of the cylindrical surface of the armature, and outside faces that are plane and that face towards the stator.
    Type: Application
    Filed: November 8, 2006
    Publication date: June 7, 2007
    Applicant: MOTEURS LEROY-SOMER
    Inventors: Atef Abou-Akar, Eric Coupart
  • Rotary electric machine comprising a stator and two rotors
    Publication number: 20060175923
    Abstract: The invention relates to an electric machine comprising a stator (10, 40) provided with a plurality of teeth (11, 41), each tooth supporting at lest one individual coil (13, 46, 47), an external rotor (30) which is radially arranged outside the stator and provided with constant magnets, an internal rotor (20) radially arranged inside the stator, provided with constant magnets and connected to the external rotor (30). At least one of the external (30) and internal (20) rotors is disposed in a flux concentration.
    Type: Application
    Filed: March 5, 2004
    Publication date: August 10, 2006
    Inventors: Atef Abou Akar, Eric Coupart, Jacques Saint-Michel
  • Synchronous electrical machine comprising a stator and at least one rotor, and associated control device
    Publication number: 20060097594
    Abstract: The invention relates to a synchronous electric motor comprising a stator (10) and at least one rotor (20) with permanent magnets (21), characterised by an embodiment with Xd>Xq; where Xd is the direct reactance and Xq the quadrature reactance.
    Type: Application
    Filed: March 29, 2004
    Publication date: May 11, 2006
    Inventors: Atef Abou-Akar, Jacques Saint-Michel
  • Discoid machine
    Patent number: 6833647
    Abstract: The present invention relates to a discoid machine having a rotor and a stator placed facing each other along the axis of rotation of the rotor. The machine is synchronous and has at least two rotors disposed on either side of a stator.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: December 21, 2004
    Assignee: Moteurs Leroy-Somer
    Inventors: Jacques Saint-Michel, Atef Abou-Akar
  • Discoid machine
    Publication number: 20030011274
    Abstract: The present invention relates to a discoid machine having a rotor and a stator placed facing each other along the axis of rotation of the rotor. The machine is synchronous and has at least two rotors disposed on either side of a stator.
    Type: Application
    Filed: July 12, 2002
    Publication date: January 16, 2003
    Applicant: MOTEURS LEROY-SOMER
    Inventors: Jacques Saint-Michel, Atef Abou-Akar
  • Electric machine having an outer rotor
    Publication number: 20020171305
    Abstract: The present invention relates a rotary electric machine having
    Type: Application
    Filed: April 15, 2002
    Publication date: November 21, 2002
    Applicant: MOTEURS LEROY-SOMER
    Inventors: Eric Coupart, Pascal Gauthier, Christophe Gilles, Atef Abou Akar, Jacques Saint-Michel