Patents by Inventor Marc Marchi

Marc Marchi 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: 7591594
    Abstract: A turbomachine roller bearing that supports a shaft constituted by a trunnion of a shaft line of a high-pressure spool of a turbomachine to rotate relative to a stationary support that is connected to a casing of the turbomachine, said bearing comprising rollers inserted between an outer ring disposed adjacent to the stationary support and an inner ring disposed adjacent to the high-pressure trunnion, the inner ring extending along the axis beyond a downstream end of the high-pressure trunnion to which it is secured by clamping means, and being provided with anti-rotation means for preventing said inner ring from rotating relative to the high-pressure trunnion.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: September 22, 2009
    Assignee: SNECMA
    Inventors: Gilles Charier, Guy Dusserre-Telmon, Marc Marchi, Jean-Pierre Mourlan, Patrice Rosset, Zoltan Zsiga
  • Patent number: 7556474
    Abstract: A turbomachine including a wheel with hollow blades that are cooled internally by a forced flow of cooling air. According to an important characteristic of the invention, a hook-annulus (70) is interposed between the outer edge of the labyrinth-disk (52) and the rotor disk (36), the hook-annulus including a retaining shoulder (72) constituting an outer annular hook in which the outer edge of the labyrinth-disk is engaged, and a bearing shoulder (74) constituting an inner hook engaged in a groove around the circumference of the rotor disk.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: July 7, 2009
    Assignee: Snecma
    Inventor: Marc Marchi
  • Patent number: 7513740
    Abstract: A turbine ring made up of an assembly of a plurality of sectors forming the outer shroud of the rotor of said turbine. The sectors are united end to end with interposed sealing systems comprising tongues housed in slots, said tongues being rectilinear and engaged in respective rectilinear slots in the radial faces of said sectors.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: April 7, 2009
    Assignee: SNECMA
    Inventors: Nicolas Hervy, Marc Marchi, Ludovic Nicollas
  • Publication number: 20090074579
    Abstract: A turbine ring made up of an assembly of a plurality of sectors forming the outer shroud of the rotor of said turbine. The sectors are united end to end with interposed sealing systems comprising tongues housed in slots, said tongues being rectilinear and engaged in respective rectilinear slots in the radial faces of said sectors.
    Type: Application
    Filed: April 12, 2005
    Publication date: March 19, 2009
    Applicant: SNECMA MOTEURS
    Inventors: Nicolas Hervy, Marc Marchi, Ludovic Nicollas
  • Patent number: 7217100
    Abstract: A device for holding an annular end plate against a radial face of a rotor disc, the disc having in the radial face an annular recess behind a collar extending radially outwards, and the end plate having, in its radially inner part, an annular base bearing against the radially outer wall of the recess and a foot extending radially inwards in the recess from the base, the device including a split annular retaining ring disposed in the recess. The ring is constituted by a snap ring interposed axially between the foot of the end plate and the collar and the peripheral surface of which butts against the base, the peripheral surface and the collar comprising, when joined, notches, which open radially outwards and are intended to receive compression tools for the snap ring, which tools retract into the contour of the collar during the assembly or disassembly of the end plate.
    Type: Grant
    Filed: July 19, 2004
    Date of Patent: May 15, 2007
    Assignee: Snecma Moteurs
    Inventors: Kamel Benderradji, Marc Marchi
  • Patent number: 7214034
    Abstract: A system for controlling a leakage zone under platforms of blades of a turbomachine blade-wheel by liners having edges that flare radially inwards, and that are disposed in inter-blade cavities defined by the platforms, by upstream and downstream radial walls of the blades and by the periphery of the wheel disk. One of the flared edges, upstream or downstream, presents an elastic zone bearing on an inclined surface of the adjacent radial wall relative to a radial plane, such that the liner tends to move axially towards the radial wall facing, under action of centrifugal forces, to improve sealing in the zone, and so that when the wheel stops, the elastic zone moves radially inwards, the liner pivoting around an axis distant from the elastic zone.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: May 8, 2007
    Assignee: Snecma Moteurs
    Inventors: Chantal Giot, Marc Marchi, Christian Gosselin, Eric Bil
  • Patent number: 7140840
    Abstract: A turboshaft engine, such as for example a turbine, including a segmented seal between two longitudinally adjacent elements such as, for example, a casing and a ring of sectors of vanes. According to one embodiment, a seal is interposed between a casing and a ring of sectors of vanes and includes a plurality of flexible segments having a straight deformation zone and a straight fluid-tight bearing zone.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: November 28, 2006
    Assignee: Snecma Moteurs
    Inventors: Jean-Claude Taillant, Marc Marchi
  • Publication number: 20060245924
    Abstract: The gastight sealing device associated with a functional clearance (20) existing between two sectors of a turbomachine comprises an annular plate (100) wound up on itself over at least one turn, covering said functional clearance (20).
    Type: Application
    Filed: April 25, 2006
    Publication date: November 2, 2006
    Applicant: SNECMA
    Inventors: David Audeon, Kamel Benderradji, Marc Marchi
  • Patent number: 7037071
    Abstract: The invention provides a device for holding strip sealing gaskets on a turbomachine nozzle, the nozzle being constituted by a plurality of sectors having guide vanes which extend between inner and outer platforms elements, at least one of said platform elements having a sealing strip (30) disposed radially in a space between said platform element and an adjacent structural element in order to provide fluid tightness between said elements, the corresponding strips of two adjacent sectors touching, and their joint being covered by a joint cover (31) disposed between said strips, and by a holding member for holding said strips in the sealing position.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: May 2, 2006
    Assignee: Snecma Moteurs
    Inventors: Serge Louis Antunes, Patrick Pierre Bernard Gazeau, Marc Marchi, Patrice Jean Marc Rosset
  • Patent number: 7011493
    Abstract: A turbomachine includes a casing, a rotor, and a plurality of cooled ring segments installed between the casing and the rotor, each ring segment containing a main cooling cavity and being attached to the casing by a fastening device. The fastening device can include a clamping screw positioned more or less radially and pinning the ring segment against the casing. The clamping screw is crossed through by a cooling airway that communicates with the main cooling cavity of the ring segment.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: March 14, 2006
    Assignee: Snecma Moteurs
    Inventors: Marc Marchi, Paul Rodrigues, Patrice Rosset, Jean-Claude Taillant, Jean-Baptiste Arilla
  • Publication number: 20050249590
    Abstract: A turbomachine including a wheel with hollow blades that are cooled internally by a forced flow of cooling air. According to an important characteristic of the invention, a hook-annulus (70) is interposed between the outer edge of the labyrinth-disk (52) and the rotor disk (36), the hook-annulus including a retaining shoulder (72) constituting an outer annular hook in which the outer edge of the labyrinth-disk is engaged, and a bearing shoulder (74) constituting an inner hook engaged in a groove around the circumference of the rotor disk.
    Type: Application
    Filed: March 2, 2005
    Publication date: November 10, 2005
    Applicant: SNECMA MOTEURS
    Inventor: Marc Marchi
  • Publication number: 20050196088
    Abstract: A turbomachine roller bearing that supports a shaft constituted by a trunnion of a shaft line of a high-pressure spool of a turbomachine to rotate relative to a stationary support that is connected to a casing of the turbomachine, said bearing comprising rollers inserted between an outer ring disposed adjacent to the stationary support and an inner ring disposed adjacent to the high-pressure trunnion, the inner ring extending along the axis beyond a downstream end of the high-pressure trunnion to which it is secured by clamping means, and being provided with anti-rotation means for preventing said inner ring from rotating relative to the high-pressure trunnion.
    Type: Application
    Filed: March 7, 2005
    Publication date: September 8, 2005
    Applicant: Snecma Moteurs
    Inventors: Gilles Charier, Guy Dusserre-Telmon, Marc Marchi, Jean-Pierre Mourlan, Patrice Rosset, Zoltan Zsiga
  • Publication number: 20050175463
    Abstract: A system for controlling a leakage zone under platforms of blades of a turbomachine blade-wheel by liners having edges that flare radially inwards, and that are disposed in inter-blade cavities defined by the platforms, by upstream and downstream radial walls of the blades and by the periphery of the wheel disk. One of the flared edges, upstream or downstream, presents an elastic zone bearing on an inclined surface of the adjacent radial wall relative to a radial plane, such that the liner tends to move axially towards the radial wall facing, under action of centrifugal forces, to improve sealing in the zone, and so that when the wheel stops, the elastic zone moves radially inwards, the liner pivoting around an axis distant from the elastic zone.
    Type: Application
    Filed: May 28, 2003
    Publication date: August 11, 2005
    Applicant: Snecma Moteurs
    Inventors: Chantal Giot, Marc Marchi, Christian Gosselin, Eric Bil
  • Publication number: 20050095123
    Abstract: Turboshaft engine, such as for example a turbine, comprising a segmented seal between two longitudinally adjacent elements such as, for example, a casing and a ring of sectors of vanes. According to one embodiment, a seal is interposed between a casing and a ring of sectors of vanes and consists of a plurality of flexible segments having a straight deformation zone and a straight fluid-tight bearing zone.
    Type: Application
    Filed: September 22, 2004
    Publication date: May 5, 2005
    Applicant: SNECMA MOTEURS
    Inventors: Jean-Claude Taillant, Marc Marchi
  • Publication number: 20050042108
    Abstract: The invention relates to a device for holding an annular end plate (5) against a radial face (4) of a rotor disc (1), the said disc having in the said radial face an annular recess (7) behind a collar (13) extending radially outwards, and the said end plate (5) having, in its radially inner part, an annular base bearing against the radially outer wall of the recess (7) and a foot extending radially inwards in the recess (7) from the base, the said device comprising a split annular retaining ring disposed in the recess (7).
    Type: Application
    Filed: July 19, 2004
    Publication date: February 24, 2005
    Applicant: SNECMA MOTEURS
    Inventors: Kamel Benderradji, Marc Marchi
  • Publication number: 20040239050
    Abstract: The invention provides a device for holding strip sealing gaskets on a turbomachine nozzle, the nozzle being constituted by a plurality of sectors having guide vanes which extend between inner and outer platforms elements, at least one of said platform elements having a sealing strip (30) disposed radially in a space between said platform element and an adjacent structural element in order to provide fluid tightness between said elements, the corresponding strips of two adjacent sectors touching, and their joint being covered by a joint cover (31) disposed between said strips, and by a holding member for holding said strips in the sealing position.
    Type: Application
    Filed: March 17, 2004
    Publication date: December 2, 2004
    Inventors: Serge Louis Antunes, Patrick Pierre Bernard Gazeau, Marc Marchi, Patrice Jean Marc Rosset
  • Publication number: 20040219009
    Abstract: The invention concerns a turbomachine (100) comprising a casing (102), a rotor (4), and a plurality of cooled ring segments (108) installed between the casing and the rotor, each ring segment containing a main cooling cavity (162) and being attached to the casing by means of a fastening device (132). According to the invention, the fastening device (132) comprises a clamping screw (134) positioned more or less radially and pinning the ring segment against the casing. The clamping screw (134) is crossed through by a cooling airway (174) that communicates with the main cooling cavity (162) of the ring segment.
    Type: Application
    Filed: March 2, 2004
    Publication date: November 4, 2004
    Applicant: SNECMA MOTEURS
    Inventors: Marc Marchi, Paul Rodrigues, Patrice Rosset, Jean-Claude Taillant, Jean-Baptiste Arilla
  • Patent number: 5915919
    Abstract: Layout for adjusting the diameter of a turbine engine ring (5) positioned facing mobile rotor blades (4) and connected to a case element (7). The latter is provided with a cavity (16) communicating with chambers (21, 23) around a gas flow stream (31). A limited air current traverses the cavity (16) and is sufficiently reduced to ensure the development of a heat convection, which renders uniform the temperature of the case element (7) and the ring (5) and consequently the diameter of the latter.
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: June 29, 1999
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation "Snecma"
    Inventors: Jean-Claude Taillant, Laurent Palmisano, Marc Marchi, Patrick Rossi