Patents by Inventor Alfredo Vagati

Alfredo Vagati 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: 7395143
    Abstract: The system (CVT) includes a first electrical machine (M1) with a first rotor (R1) provided with a multiphase winding (W1) and fixed firmly to the shaft (1) of the internal combustion engine (ICE) and a second rotor (R2) or intermediate rotor coaxial with the first rotor (R1) and carrying first magnetic means (PM1) operatively cooperating with the winding (W1) of the first rotor (R1), the intermediate rotor (R2) being coupled with at least one axle (2) of the motor vehicle, and a second rotary electrical machine (M2) coaxial with the first (M1) and including a stator (ST), which is arranged on the opposite side of the intermediate rotor (R2) to the first rotor (R1) and is provided with a multiphase winding (W2), as well as the intermediate rotor (R2) which also carries second magnetic means operatively cooperating with the winding (W2) of the stator (ST), a first inverter and a second inverter (I1, I2) of which the a.c.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: July 1, 2008
    Assignee: CRF Societa Consortile per Azioni
    Inventors: Franco Villata, Antonino Fratta, Alfredo Vagati, Gian Mario Pellegrino, Angela Del Gobbo, Liborio Tarquinio, Stefano Re Fiorentin
  • Publication number: 20050085975
    Abstract: The system (CVT) includes a first electrical machine (M1) with a first rotor (R1) provided with a multiphase winding (W1) and fixed firmly to the shaft (1) of the internal combustion engine (ICE) and a second rotor (R2) or intermediate rotor coaxial with the first rotor (R1) and carrying first magnetic means (PM1) operatively cooperating with the winding (W1) of the first rotor (R1), the intermediate rotor (R2) being coupled with at least one axle (2) of the motor vehicle, and a second rotary electrical machine (M2) coaxial with the first (M1) and including a stator (ST), which is arranged on the opposite side of the intermediate rotor (R2) to the first rotor (R1) and is provided with a multiphase winding (W2), as well as the intermediate rotor (R2) which also carries second magnetic means operatively cooperating with the winding (W2) of the stator (ST), a first inverter and a second inverter (I1, I2) of which the a.c.
    Type: Application
    Filed: December 11, 2002
    Publication date: April 21, 2005
    Inventors: Franco Villata, Antonino Fratta, Alfredo Vagati, Gian Pellegrino, Angela Del Gobbo, Liborio Tarquinio, Stefano Fiorentin
  • Patent number: 5818140
    Abstract: A synchronous reluctance electrical motor, including a stator having an even number of slots per pair of poles equal to n.sub.s, a rotor of the transverse lamination type having an even number n.sub.r of equivalent slots per pair of poles, and an air gap separating the stator from the rotor, wherein, in order to minimize the torque ripple, between the number n.sub.s of the stator slots and the number n.sub.r of the rotor equivalent slots the following relationships are satisfied: n.sub.s -n.sub.r .noteq.0, +2, -2; n.sub.r >6; n.sub.s .noteq.m.multidot.n.sub.r, m being an integer, and preferably also the following relationship: n.sub.s -n.sub.r =.+-.4 . The rotor of this motor may have insulating layers open to the air gap and/or insulating layers closed towards the air gap by iron ribs suitable for being magnetically saturated; other iron ribs may traverse some insulating layers in intermediate positions thereof.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: October 6, 1998
    Inventor: Alfredo Vagati