Patents by Inventor Sylvain Duval

Sylvain Duval 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: 8756935
    Abstract: A gas turbine engine combustion chamber including at least one deflector mounted on the chamber end wall and including an opening for a carburetted air supply device. The deflector includes an opening, corresponding to the chamber end wall opening, with an annular cylindrical part for attachment to the wall, the cylindrical part including a mechanical attachment mechanism collaborating with a complementary attachment mechanism on a metal sleeve secured to the wall and a cylindrical centering cup fixed by one end to the sleeve and housed inside the cylindrical part of the deflector.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: June 24, 2014
    Assignee: SNECMA
    Inventors: Sylvain Duval, Didier Hippolyte Hernandez, Romain Nicolas Lunel
  • Patent number: 8516830
    Abstract: A turbomachine combustion chamber including a substantially L-shaped fuel injector and a device for mounting and fastening the injector in an orifice of the casing of the chamber, is disclosed. The device includes an outer collar carried by the injector and a removable annular spacer surrounding the injector and designed to be interposed between the collar of the injector and the casing.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: August 27, 2013
    Assignee: SNECMA
    Inventors: Sylvain Duval, Didier Hippolyte Hernandez, Romain Nicolas Lunel
  • Patent number: 8028530
    Abstract: A turbomachine including an annular combustion chamber is disclosed. The combustion chamber includes a radially inner wall and a radially outer wall exhibiting symmetry of revolution. An annular chamber end wall equipped with a fuel injection device connects upstream ends of the inner and outer walls. A suspension device suspends the upstream end of the combustion chamber from an outer casing.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: October 4, 2011
    Assignee: SNECMA
    Inventors: Patrice Andre Commaret, Sylvain Duval, Didier Hippolyte Hernandez, Yann Francois Jean-Claude Vuillemenot
  • Publication number: 20110120144
    Abstract: An annular combustion chamber for a turbomachine, such as a jet engine or a turboprop engine for an aircraft, including at the downstream end of one of its external or internal walls of revolution an annular flange for fastening to a casing of the turbomachine, the downstream end of the other wall of revolution of the chamber including a bearing mechanism which are spaced apart from another casing of the turbomachine when cold and bear radially on this casing when hot.
    Type: Application
    Filed: April 21, 2009
    Publication date: May 26, 2011
    Applicant: SNECMA
    Inventors: Caroline Jacqueline Denise Berdou, Sylvain Duval, Romain Nicolas Lunel
  • Publication number: 20110113789
    Abstract: A gas turbine engine combustion chamber including at least one deflector mounted on the chamber end wall and including an opening for a carburetted air supply device. The deflector includes an opening, corresponding to the chamber end wall opening, with an annular cylindrical part for attachment to the wall, the cylindrical part including a mechanical attachment mechanism collaborating with a complementary attachment mechanism on a metal sleeve secured to the wall and a cylindrical centering cup fixed by one end to the sleeve and housed inside the cylindrical part of the deflector.
    Type: Application
    Filed: June 10, 2009
    Publication date: May 19, 2011
    Applicant: SNECMA
    Inventors: Sylvain Duval, Didier Hippolyte Hernandez, Romain Nicolas Lunel
  • Patent number: 7909573
    Abstract: A casing cover for enclosing a casing in a jet engine is disclosed. The casing cover includes two coaxial shells arranged one inside the other and radial envelopes which connect the two coaxial shells. Radial arms of the casing extend inside the radial envelopes. The cover is fastened at its downstream end to a first element of the casing and axially abuts at its upstream end on a second element of the casing. In a free state, an axial dimension of the cover of less than the axial distance of the casing between the point where the first element of the casing is fastened to the downstream end of the cover and the point where the second element of the casing axially abuts the upstream end of the cover such that the cover is tensioned axially when it is mounted on and fastened to the casing.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: March 22, 2011
    Assignee: SNECMA
    Inventors: Laurent Bernard Cameriano, Sylvain Duval, Eric Masson, Herve Bernard Plisson
  • Publication number: 20100058765
    Abstract: A turbomachine combustion chamber including a substantially L-shaped fuel injector and means for mounting and fastening the injector in an orifice of the casing of the chamber, said means including an outer collar carried by the injector and a removable annular spacer surrounding the injector and designed to be interposed between the collar of the injector and the casing.
    Type: Application
    Filed: August 20, 2009
    Publication date: March 11, 2010
    Applicant: SNECMA
    Inventors: Sylvain Duval, Didier Hippolyte Hernandez, Romain Nicolas Lunel
  • Patent number: 7673456
    Abstract: A turbomachine combustion chamber includes an inner annular wall, an outer annular wall surrounding the inner wall so as to co-operate therewith to define an annular space forming a combustion area, a plurality of fuel injector systems including pilot injectors alternating circumferentially with full-throttle injectors, and at least one air admission opening out into the upstream end of the combustion area in a substantially longitudinal direction. The outer wall has a plurality of pilot cavities extending between the two longitudinal ends of the outer wall and extending radially towards thereof, the pilot cavities being fed with air from outside the combustion chamber in a common substantially circumferential direction. Each pilot injector opens out radially into a pilot cavity, and each full-throttle injector opens out radially between two adjacent pilot cavities.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: March 9, 2010
    Assignee: SNECMA
    Inventors: Laurent Bernard Cameriano, Michel Pierre Cazalens, Sylvain Duval, Romain Nicolas Lunel
  • Publication number: 20100043449
    Abstract: Turbomachine comprising an annular combustion chamber (48) comprising two, a radially inner (24) and a radially outer (26), walls exhibiting symmetry of revolution, which are connected at their upstream ends by an annular chamber end wall (28) equipped with fuel-injection means, which turbomachine comprises suspension means (50) for suspending the upstream end of the combustion chamber (48) from an outer casing (18).
    Type: Application
    Filed: July 22, 2008
    Publication date: February 25, 2010
    Applicant: SNECMA
    Inventors: Patrice Andre COMMARET, Sylvain Duval, Didier Hippolyte Hernandez, Francois Jean-Claude Vuillemenot Yann
  • Publication number: 20080307792
    Abstract: The invention relates to a turbomachine combustion chamber comprising an inner annular wall, an outer annular wall surrounding the inner wall so as to co-operate therewith to define an annular space forming a combustion area, a plurality of fuel injector systems comprising pilot injectors alternating circumferentially with full-throttle injectors, and at least one air admission opening out into the upstream end of the combustion area in a substantially longitudinal direction. The outer wall has a plurality of pilot cavities extending between the two longitudinal ends of the outer wall and extending radially towards thereof, the pilot cavities being fed with air from outside the combustion chamber in a common substantially circumferential direction. Each pilot injector opens out radially into a pilot cavity, and each full-throttle injector opens out radially between two adjacent pilot cavities.
    Type: Application
    Filed: June 12, 2008
    Publication date: December 18, 2008
    Applicant: SNECMA
    Inventors: Laurent Bernard Cameriano, Michel Pierre Cazalens, Sylvain Duval, Romain Nicolas Lunel
  • Publication number: 20070217911
    Abstract: Casing cover (10) in a jet engine, comprising two coaxial shells (36, 38) arranged one inside the other and joined fixedly by radial envelopes (40) inside which extend radial arms (26) of the casing, the cover being fastened at its downstream end to an element of the casing and bearing axially at its upstream end on another element of the casing, and the cover having, in the free state, an axial dimension (D) of less than the axial distance (L) between the points where its downstream end is fastened to the casing and the points where its upstream end bears axially on the casing, and being tensioned axially when it is mounted on and fastened to the casing.
    Type: Application
    Filed: March 16, 2007
    Publication date: September 20, 2007
    Applicant: SNECMA
    Inventors: Laurent Bernard Cameriano, Sylvain Duval, Eric Masson, Herve Bernard Plisson
  • Publication number: 20060189220
    Abstract: A system for testing transceiver modules associated to different multi-source agreement standards, comprising a transceiver testing device and an interface connection unit. The transceiver testing device comprises a processor for performing at least one testing operation on an MSA transceiver module associated to a certain multi-source agreement standard. The interface connection unit is suitable for connecting the MSA transceiver module to the transceiver testing device. The transceiver module includes a certain type of electrical connector element. The interface connection unit comprises a first connector component and a second connector component. The first connector component is adapted for being removably connecting the interface connection unit to the transceiver testing device. The first connector component is different from the certain type of connector element of the MSA transceiver module.
    Type: Application
    Filed: February 18, 2005
    Publication date: August 24, 2006
    Inventors: Sylvain Duval, Harold Lebrun, Allan Ezri
  • Publication number: 20060086093
    Abstract: A variable-section nozzle for a turbomachine, the nozzle comprising a plurality of moving flaps mounted on the downstream end of an annular casing of the turbomachine, a moving flap control system comprising control levers each associated with a respective moving flap and at least one actuator for actuating the control levers, and a plurality of pairs of arms each forming a control lever support, the arms of each support being secured both to the casing and to a control lever, each pair of arms forming a control lever support being formed as a single piece.
    Type: Application
    Filed: October 13, 2005
    Publication date: April 27, 2006
    Applicant: SNECMA
    Inventors: Mathieu Dakowski, Sylvain Duval, Olivier Kreder, Romain Lunel, Emmanuel Mandet, Guillaume Sevi