Patents by Inventor Pierre Faverolle

Pierre Faverolle 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: 10069355
    Abstract: A rotor for a rotary electrical machine, fitted such as to rotate around an axis (X), and comprising a pair of magnet wheels (17) which each have a flange (18) and a plurality of magnetic poles (19). Each magnetic pole (19) extends axially from the flange (18) towards a free end (26), and has an outer surface (27). The outer surface (27) of at least one magnetic pole (19) of at least one magnet wheel (17) has at least one decreasing segment (29). The decreasing segment (29) is configured such that a radius between the said outer surface (27) and the axis (X) of the rotor (4) decreases, when going along the said decreasing segment (29), towards the free end (26) of the said magnetic pole (19).
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: September 4, 2018
    Assignee: Valeo Equipments Electriques Moteur
    Inventors: Jean-Francois Gautru, Pierre Faverolle
  • Patent number: 9948230
    Abstract: The invention relates to a device for controlling an alternator of the type that controls a DC voltage (B+A) generated by the alternator (11) according to a predetermined set voltage (U0) by monitoring the intensity of an energizing current (IEXC) flowing through an energizing circuit of the alternator. According to the invention, the device includes a voltage-control loop (7) and a temperature-control loop (17) which comprises a temperature sensor supplying a current temperature (T) of components of the alternator, a subtracter (19) supplying a temperature error (?t) between the current temperature (T) and a maximum acceptable temperature (Tmax) and a control module (20) supplying a maximum admissible energizing percentage (rmax) in accordance with the temperature error according to a predetermined control law.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: April 17, 2018
    Assignee: Valeo Equipments Electriques Moteur
    Inventors: Pierre Chassard, Pierre Tisserand, Jean-Francois Gautru, Nathalie Canitrot, Jean-Marc Dubus, Thomas Vera, Pierre Faverolle, Gregory Godefroy
  • Publication number: 20180083498
    Abstract: The invention relates to a stator (13) for an alternator or an electric machine, which comprises: a cylindrical hub (14) in which a plurality of slots (201) that extend in the axial direction are formed, and a coil (12) mounted in the slots; in which the stator core (14) comprises: a cylindrical base portion (203) forming a cylinder head (203), a plurality of teeth (202) arranged such as to extend from the base portion towards an axial center (X-X), the plurality of slots (201) being defined by the base portion and by an adjacent pair of the teeth (202). For each notch (201) the width at the opening of the notch (l_eo) is smaller than the width (l_ec) at the cylinder head (203).
    Type: Application
    Filed: October 30, 2015
    Publication date: March 22, 2018
    Applicant: VALEO EQUIPEMENTS ELECTRIQUES MOTEUR
    Inventors: Eric SIMON, Matthieu BONNICI, Olivier SAVINOIS, Bruno DANDRE, Vincent RAMET, Stéphane DE CLERCQ, Xavier DUNESME, Jean-Francois GAUTRU, Pierre FAVEROLLE
  • Publication number: 20170359015
    Abstract: The invention relates to a device for controlling an alternator of the type that controls a DC voltage (B+A) generated by the alternator (11) according to a predetermined set voltage (U0) by monitoring the intensity of an energising current (IEXC) flowing through an energising circuit of the alternator. According to the invention, the device includes a voltage-control loop (7) and a temperature-control loop (17) which comprises a temperature sensor supplying a current temperature (T) of components of the alternator, a subtracter (19) supplying a temperature error (?t) between the current temperature (T) and a maximum acceptable temperature (Tmax) and a control module (20) supplying a maximum admissible energising percentage (rmax) in accordance with the temperature error according to a predetermined control law.
    Type: Application
    Filed: December 8, 2015
    Publication date: December 14, 2017
    Inventors: Pierre CHASSARD, Pierre TISSERAND, Jean-Francois GAUTRU, Nathalie CANITROT, Jean-Marc DUBUS, Thomas VERA, Pierre FAVEROLLE, Gregory GODEFROY
  • Publication number: 20160359383
    Abstract: A rotor for a rotary electrical machine, fitted such as to rotate around an axis (X), and comprising a pair of magnet wheels (17) which each have a flange (18) and a plurality of magnetic poles (19). Each magnetic pole (19) extends axially from the flange (18) towards a free end (26), and has an outer surface (27). The outer surface (27) of at least one magnetic pole (19) of at least one magnet wheel (17) has at least one decreasing segment (29). The decreasing segment (29) is configured such that a radius between the said outer surface (27) and the axis (X) of the rotor (4) decreases, when going along the said decreasing segment (29), towards the free end (26) of the said magnetic pole (19).
    Type: Application
    Filed: June 7, 2016
    Publication date: December 8, 2016
    Inventors: Jean-Francois GAUTRU, Pierre FAVEROLLE
  • Patent number: 8946963
    Abstract: A polyphase stator for an internally ventilated rotating electrical machine comprises a body (14) provided with slots and carrying a coil (12) having at least one winding per phase. A plurality of pairs of lateral branches are mounted in a slot of the body (14). A plurality of connecting heads (50 to 55) extend outside the body (14) so as to form a first lead-out (42) and interconnect each pair of lateral branches. A plurality of coupling feet (150 to 155) are offset circumferentially with respect to the plurality of connecting heads and extend outside the body (14) so as to form a second lead-out (43) and interconnect each pair of lateral branches. One of the pluralities has a generally pointed shape and has an axial length of between 15 and 20 mm. The stator is used with an alternator or alternator-stator for a motor vehicle. An internally ventilated electrical machine is equipped with the stator.
    Type: Grant
    Filed: July 4, 2008
    Date of Patent: February 3, 2015
    Assignee: Valeo Equipments Electriques Moteur
    Inventors: Xavier Dunesme, Jerome Fournier, Nicolas Langlard, Pierre Faverolle
  • Publication number: 20100295393
    Abstract: A polyphase stator for an internally ventilated rotating electrical machine comprises a body (14) provided with slots and carrying a coil (12) having at least one winding per phase. A plurality of pairs of lateral branches are mounted in a slot of the body (14). A plurality of connecting heads (50 to 55) extend outside the body (14) so as to form a first lead-out (42) and interconnect each pair of lateral branches. A plurality of coupling feet (150 to 155) are offset circumferentially with respect to the plurality of connecting heads and extend outside the body (14) so as to form a second lead-out (43) and interconnect each pair of lateral branches. One of the pluralities has a generally pointed shape and has an axial length of between 15 and 20 mm. The stator is used with an alternator or alternator-stator for a motor vehicle. An internally ventilated electrical machine is equipped with the stator.
    Type: Application
    Filed: July 4, 2008
    Publication date: November 25, 2010
    Inventors: Xavier Dunesme, Jéróme Fournier, Nicolas Langlard, Pierre Faverolle
  • Patent number: 7318403
    Abstract: A fiction clutch device comprising a flywheel with a front end designed to be fixed to a vehicle crankshaft (11) and a rear end in the form of a hollow-shaped reaction plate (4) with a central recess (39) externally defined by a friction surface (37) and a friction disc (20), including at its external periphery at least a friction lining (16) to be in contact with the reaction plate (4) friction surface (37). The friction lining (16) is integral with a support (21) elastically coupled via a torque damper (20a) to a central hub (15) designed to be interlocked in rotation with a driven shaft. The torque damper (20a) penetrates into the reaction plate (4) central recess (39) and the flywheel (13) bearing between its front and rear ends the rotor (6) of a rotating electric machine (2) comprising a fixed stator (5).
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: January 15, 2008
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: David Huart, Michel Graton, Cédric Plasse, Roger Abadia, Fabrice Tauvron, Pierre Faverolle, Dokou Antoine Akemakou, Gilles Lebas
  • Patent number: 7170210
    Abstract: An alternator having a rotor and a stator is described. The stator includes a cylindrical body with a plurality of phases. Each of the plurality of phases includes a phase input located at least partially outside of the cylindrical body, where the phase input is formed of a bar. The bar includes a longitudinal surface extending along at least a part of the bar, a first segment crossing the cylindrical body, and a second segment extending from an axial side of the cylindrical body. Each of the plurality of phases further includes a phase output located at least partially outside of the cylindrical body and conducting elements crossing the cylindrical body and forming at two axially opposite sides of the body, respectively, a first chignon and a second chignon. The conducting elements are electrically connected to form at least one winding connecting the phase input to the phase output.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: January 30, 2007
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Denis Even, Pierre Faverolle, Jean-Luc Tarrago
  • Patent number: 7145273
    Abstract: The invention relates to an alternator for a motor vehicle including a stator (13) equipped with a body (14) carrying several phases each comprising, on the one hand, an inlet (E1 to E?3) and an outlet (S1 to S?3) installed outside the body (14) of the stator (13), and, on the other hand, electrically conducting elements, which are arranged in a network on either side of the body (14) of the stator (13) so as to form a first (12) and a second (12?) bun and which pass through the said body, in which the electrically conducting elements are linked together to form the said networks and connect the inlet of the phase to the outlet of the phase by forming at least one winding. According to the invention, one of the buns (12, 12?), on one side of the body (14) of the stator (13), carries three inlets (E1 to E3–E?1 to E?3), an electrically conducting linking part (50, 51) linking the said inlets electrically together.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: December 5, 2006
    Assignee: Valeo Equipments Electriques Monteur
    Inventors: Denis Even, Pierre Faverolle, Jean-Claude Mipo, Jean-Luc Tarrago
  • Publication number: 20060141874
    Abstract: The invention concerns an arrangement for welding a rotating electrical machine winding consisting of a plurality of conductive segments supported on a supporting body (1) so that the ends of each pair of conductive segments to be welded are juxtaposed in a radial direction and arranged in radial rows (R) circumferentially offset relative to one another, said welding arrangement including an equipment for flanging the ends of the conductive segments to be welded, comprising circumferential locking means formed by cam-shaped portions (19) of flanging members (13, 13?), a cam portion (19) being configured so as to be urged to come into clamped position between the ends of two radial rows (R) by rotation of the flanging member. The invention is applicable to a motor vehicle alternator.
    Type: Application
    Filed: October 7, 2003
    Publication date: June 29, 2006
    Inventors: Romaric Lenoir, Pierre Faverolle
  • Patent number: 7019424
    Abstract: Current rectifying equipment for rotary electrical machines has a rear bearing, of the type comprising a plurality of positive diodes (2) supported by a support (1) in the form of a plate, a plurality of negative diodes (7) supported by the rear bearing (6) of the machine, a device (9) for connecting the positive and negative diodes together, and structure for generating a forced axial stream of a coolant fluid, the support (1) for the diodes carrying cooling fins (4) which extend in the axial stream (F1) of the coolant fluid in the radial direction of the machine. The equipment includes means for effecting mixed cooling of the support for the negative diodes by convection and conduction. The invention can be used for alternators for motor vehicles.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: March 28, 2006
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Michel Aeschlimann, Sébastien Arrighi, Pierre Faverolle, Thierry Hevia, Dirk Schulte, Serge Masriera
  • Publication number: 20060001326
    Abstract: The invention concerns an alternator, in particular for motor vehicle, comprising a stator (13) provided with a cylindrical body (14) bearing several phases (P), each phase comprising an input (E1 to E3) and an output, and electrically conductive interconnected elements (50) connecting the phase inputs to the phase output, the inputs (E1 to E3) consisting of rods having at least one longitudinal flat surface (21), each input including a first segment (25) passing through the body (14) of the stator (13) and a second end segment (26) extending from an axial side of said body (14), the second segments (26) of the inputs (E1 to E3) are twisted, the flat surface (21) of each input (E1 to E3) extending along the first segment (25) in a radial plane, and extending along the second end segment (26) either to form a cylindrical portion coaxial with the body (14) of the stator (13) or in a plane tangential to a cylinder coaxial with the body (14) of the stator (13).
    Type: Application
    Filed: May 23, 2003
    Publication date: January 5, 2006
    Inventors: Denis Even, Pierre Faverolle, Jean-Luc Tarrago
  • Patent number: 6930424
    Abstract: The invention relates to alternators for a motor vehicle, of which a stator comprises a cylindrical body, several phases each formed by a plurality of electrically conducting elements, the cylindrical body comprising radial slots for accommodating at least four phase-conductor elements forming at least four layers of conductor elements, each conductor element including two branches placed in slots each in a predetermined layer and a head forming a U-shape seen in the peripheral direction, the half of the conductor elements which are engaged by their first branches in a slot being engaged by their second respective branches in the same other slot. According to the invention, at least first and second conductor elements of such half are such that the radii of curvature of the U-shapes of the two conductor elements are substantially identical.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: August 16, 2005
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Denis Even, Pierre Faverolle, Jean-Claude Mipo, Jean-Luc Tarrago
  • Patent number: 6906437
    Abstract: The invention concerns a current-rectifying arrangement for rotary electrical machines of the type comprising a support (50, 51, 51?) for a plurality of positive diodes (66), a support for a plurality of negative diodes, forming part of the rear bearing of the machine, and a device for cooling by the creation of a forced axial flow of a cooling fluid through the rectifying arrangement, the support for the positive diodes carrying radial cooling fins (60) on its front face oriented towards the axis of the machine; the positive diode support device (66) being produced in the form of at least one moulded piece (50, 51, 51?), whose face oriented towards the aforementioned axis carries fine cooling fins (60). The invention can be used in alternators for motor vehicles.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: June 14, 2005
    Assignee: Valeo Equipments Electriques Moteur
    Inventors: Michel Aeschlimann, Sébastien Arrighi, Pierre Faverolle, Thierry Hevia, Dirk Schulte
  • Publication number: 20040012274
    Abstract: The invention concerns a current-rectifying arrangement for rotary electrical machines of the type comprising a support (50, 51, 51′) for a plurality of positive diodes (66), a support for a plurality of negative diodes, forming part of the rear bearing of the machine, and a device for cooling by the creation of a forced axial flow of a cooling fluid through the rectifying arrangement, the support for the positive diodes carrying radial cooling fins (60) on its front face oriented towards the axis of the machine; the positive diode support device (66) being produced in the form of at least one moulded piece (50, 51, 51′), whose face oriented towards the aforementioned axis carries fine cooling fins (60).
    Type: Application
    Filed: March 10, 2003
    Publication date: January 22, 2004
    Inventors: Michel Aeschlimann, Sebastien Arrighi, Pierre Faverolle, Thierry Hevia, Dirk Schulte
  • Publication number: 20030178899
    Abstract: The invention relates to current rectifying equipment for rotary electrical machines having a rear bearing, of the type comprising a plurality of positive diodes (2) supported by a support (1) in the form of a plate, a plurality of negative diodes (7) supported by the rear bearing (6) of the machine, a device (9) for connecting the positive and negative diodes together, and means for generating a forced axial stream of a coolant fluid, the support (1) for the diodes carrying cooling fins (4) which extend in the said axial stream (F1) of the coolant fluid in the radial direction of the machine. The equipment is characterised in that it includes means for effecting mixed cooling of the support for the negative diodes by convection and conduction.
    Type: Application
    Filed: May 27, 2003
    Publication date: September 25, 2003
    Inventors: Michael Aeschlimann, Sebasteien Arrighi, Pierre Faverolle, Thierry Hevia, Dirk Schulte, Serge Masriera
  • Publication number: 20030117033
    Abstract: The invention relates to an alternator for a motor vehicle including a stator (13) equipped with a body (14) carrying several phases each comprising, on the one hand, an inlet (E1 to E′3) and an outlet (S1 to S′3) installed outside the body (14) of the stator (13), and, on the other hand, electrically conducting elements, which are arranged in a network on either side of the body (14) of the stator (13) so as to form a first (12) and a second (12′) bun and which pass through the said body, in which the electrically conducting elements are linked together to form the said networks and connect the inlet of the phase to the outlet of the phase by forming at least one winding. According to the invention, one of the buns (12, 12′), on one side of the body (14) of the stator (13), carries three inlets (E1 to E3-E′1 to E′3), an electrically conducting linking part (50, 51) linking the said inlets electrically together.
    Type: Application
    Filed: August 21, 2002
    Publication date: June 26, 2003
    Inventors: Denis Even, Pierre Faverolle, Jean-Claude Mipo, Jean-Luc Tarrago
  • Patent number: 6561336
    Abstract: The invention concerns a friction clutch comprising a flywheel (3) with a front end designed to be fixed to a motor vehicle crankshaft (11) and a rear end in the form of a reaction plate (4) with a central recess (39) externally defined by a friction surface and a friction disc coupled with a central hub designed to be interlocked in rotation with the input shaft of a movement gear box comprising a clutch housing, the flywheel (13) bearing between its front and rear ends the rotor (6) of a rotating electric machine (2) comprising a fixed stator borne internally by a strut designed to be interlocked with at least one of the vehicle engine-clutch housing (14) block (62). The invention is applicable to a motor vehicle.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: May 13, 2003
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: David Huart, Michel Graton, Cédric Plasse, Roger Abadia, Fabrice Tauvron, Pierre Faverolle, Dokou Antoine Akemakou, Gilles Lebas
  • Publication number: 20030011268
    Abstract: The invention relates to alternators for a motor vehicle, of which a stator comprises a cylindrical body, several phases each formed by a plurality of electrically conducting elements, the cylindrical body comprising radial slots for accommodating at least four phase-conductor elements forming at least four layers of conductor elements, each conductor element including two branches placed in slots each in a predetermined layer and a head forming a U-shape seen in the peripheral direction, the half of the conductor elements which are engaged by their first branches in a slot being engaged by their second respective branches in the same other slot.
    Type: Application
    Filed: August 21, 2002
    Publication date: January 16, 2003
    Inventors: Denis Even, Pierre Faverolle, Jean-Claude Mipo, Jean-Luc Tarrago