Patents by Inventor Dominique Raulin

Dominique Raulin 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: 10883374
    Abstract: A blade including a blade body made of organic matrix composite material and a leading edge shield made of a material that withstands point impacts better than the composite material of the blade body. The blade includes a blade tip. The leading edge shield is assembled on the blade body and includes a pressure-side fin and a suction-side fin. The pressure-side fin includes a pressure-side tab and the suction-side fin includes a suction-side tab, the pressure-side tab and the suction-side tab are folded one on the other and being secured to each other so as to form a partial covering of the blade tip. A turbojet includes a fan including such blades, and also a method of fabricating such a blade.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: January 5, 2021
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Gilles Pierre-Marie Notarianni, Jeremy Guivarc'H, Frederic Jean-Bernard Pouzadoux, Dominique Raulin, Thibault Ruf
  • Publication number: 20190383489
    Abstract: The invention concerns a turbo engine comprising a combustion chamber (110) arranged inside the outer housing (112) and comprising an internal revolution wall (118) and an external revolution wall (116). First stop parts (54) and second stop parts (56) fixed respectively to the outer housing and to the combustion chamber are provided, the first and second stop parts being adapted to come to a substantially axial stop two by two by forming stop pairs (58).
    Type: Application
    Filed: May 28, 2019
    Publication date: December 19, 2019
    Inventors: Romain Nicolas LUNEL, Damien BONNEFOI, Christophe PIEUSSERGUES, Luc NAMER, Dominique RAULIN, Dan Ranjiv JOORY, Benjamin Frantz Karl VILLENAVE
  • Patent number: 10100859
    Abstract: An assembly (110) comprising a core (113) and at least a first sheet (111) held on one side of the core by a rivet (120), the rivet having two ends (121, 122). At least a first one of these ends (121, 122) is flared in shape and extends at least through the entire thickness of the first sheet (111, 112). A method of fabricating such an assembly, in which: a core (113) and a first sheet (111) are provided; the first sheet (111) is placed on one side of the core (113); and the core (113) and the first sheet (111) are riveted together.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: October 16, 2018
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Pierre Savoyat, Jean-Paul Bourgeois, Bruno Dambrine, François Marlin, Dominique Raulin, Régis Servant
  • Publication number: 20180274375
    Abstract: A blade including a blade body made of organic matrix composite material and a leading edge shield made of a material that withstands point impacts better than the composite material of the blade body. The blade includes a blade tip. The leading edge shield is assembled on the blade body and includes a pressure-side fin and a suction-side fin. The pressure-side fin includes a pressure-side tab and the suction-side fin includes a suction-side tab, the pressure-side tab and the suction-side tab are folded one on the other and being secured to each other so as to form a partial covering of the blade tip. A turbojet includes a fan including such blades, and also a method of fabricating such a blade.
    Type: Application
    Filed: September 27, 2016
    Publication date: September 27, 2018
    Applicant: SAFRAN AIRCRAFT ENGINES
    Inventors: Gilles Pierre-Marie NOTARIANNI, Jeremy GUIVARC'H, Frederic Jean-Bernard POUZADOUX, Dominique RAULIN, Thibault RUF
  • Patent number: 9879552
    Abstract: A hydraulic device for changing the pitch of a propeller including a piston rod actuated by a hydraulic fluid, the piston rod including at its end a clevis mount able to provide a connection for transmitting the movements of the piston rod so as to change the pitch of at least one propeller, a thread nut held in position on the clevis of the piston rod by a fastener, the nut being able to collaborate with a threaded rod in order to provide a connection.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: January 30, 2018
    Assignee: SNECMA
    Inventors: Frédéric Brettes, Alain François Jean Lavie, Dominique Raulin
  • Publication number: 20170037887
    Abstract: An assembly (110) comprising a core (113) and at least a first sheet (111) held on one side of the core by a rivet (120), the rivet having two ends (121, 122). At least a first one of these ends (121, 122) is flared in shape and extends at least through the entire thickness of the first sheet (111, 112). A method of fabricating such an assembly, in which: a core (113) and a first sheet (111) are provided; the first sheet (111) is placed on one side of the core (113); and the core (113) and the first sheet (111) are riveted together.
    Type: Application
    Filed: April 8, 2015
    Publication date: February 9, 2017
    Applicant: SAFRAN AIRCRAFT ENGINES
    Inventors: Pierre SAVOYAT, Jean-Paul BOURGEOIS, Bruno DAMBRINE, François MARLIN, Dominique RAULIN, Régis SERVANT
  • Patent number: 9556745
    Abstract: A plate closes the main part of a vane in two parts. An internal cavity is closed by the plate. Around a bearing surface of the plate, a groove receives an elastic seal, and the outer edge of the plate extends over the groove to compress the seal and to establish excellent leak proofing. The position of the plate may be guaranteed by centring pins penetrating into holes adjacent to the seal and which it fills when the pins have been removed, which completes the closing of the cavity. The plate has application in particular to stationary gas guide vanes in turbine engines.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: January 31, 2017
    Assignee: SNECMA
    Inventors: Thierry Georges Paul Papin, Lise Lacroix, Dominique Raulin
  • Publication number: 20140193250
    Abstract: A plate closes the main part of a vane in two parts. An internal cavity is closed by the plate. Around a bearing surface of the plate, a groove receives an elastic seal, and the outer edge of the plate extends over the groove to compress the seal and to establish excellent leak proofing. The position of the plate may be guaranteed by centring pins penetrating into holes adjacent to the seal and which it fills when the pins have been removed, which completes the closing of the cavity. The plate has application in particular to stationary gas guide vanes in turbine engines.
    Type: Application
    Filed: July 17, 2012
    Publication date: July 10, 2014
    Applicant: SNECMA
    Inventors: Thierry Georges Paul Papin, Lise Lacroix, Dominique Raulin
  • Patent number: 8740556
    Abstract: A structural and aerodynamic module including two blades each extending along a longitudinal axis, in which each blade includes a leading edge, a trailing edge, a radially inner edge, and a radially outer edge, is provided. The module also includes a radially inner platform mechanically connecting the radially inner edges of the two blades, and a radially outer platform mechanically connecting the radially outer edges of the two blades such that the two blades and the radially outer and inner platforms delimit a flow stream. The two blades and the platforms are made from a composite material and the two blades are fixed on the radially outer and inner platforms using screw-nut assemblies.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: June 3, 2014
    Assignee: SNECMA
    Inventors: Thierry Georges Paul Papin, Alain Raffy, Dominique Raulin
  • Patent number: 8646744
    Abstract: A structural frame for a turbomachine, such as an intermediate frame or an exhaust frame, the frame including at least two coaxial rings, an inner ring and an outer ring, together with radial arms interconnecting the rings. At least one of these elements includes a plurality of parts that are fastened together by bolting.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: February 11, 2014
    Assignee: SNECMA
    Inventors: Thierry Francois Maurice Duchatelle, Thierry Georges Paul Papin, Dominique Raulin, Arnaud Sanchez
  • Publication number: 20130199167
    Abstract: A hydraulic device for changing the pitch of a propeller including a piston rod actuated by a hydraulic fluid, the piston rod including at its end a clevis mount able to provide a connection for transmitting the movements of the piston rod so as to change the pitch of at least one propeller, a thread nut held in position on the clevis of the piston rod by a fastener, the nut being able to collaborate with a threaded rod in order to provide a connection.
    Type: Application
    Filed: September 30, 2011
    Publication date: August 8, 2013
    Applicant: SNECMA
    Inventors: Frédéric Brettes, Alain François Jean Lavie, Dominique Raulin
  • Patent number: 8052381
    Abstract: The invention relates to a turbomachine module comprising a device to improve radial clearances, comprising an outer casing (22), an inner casing (21) and at least one shock absorbing ring (5) connecting the casings, the module also comprising an annular cavity (43) on the downstream side of the ring (5), with a passage (42) formed in it through which an airflow (4) is drawn off from the primary flow (Fp). According to the invention, the device to improve radial clearances comprises a thermal inertia control device for the shock absorbing ring mounted on the shock absorbing ring (5), downstream from it, this device comprising at least one coat of thermal insulation (8), and at least partly delimiting the annular cavity (43) on the downstream side of it (43).
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: November 8, 2011
    Assignee: SNECMA
    Inventors: Antoine Robert Alain Brunet, Claude Chomel, Sebastien Juste, Emmanuel Houradou, Dominique Raulin, Frederic Renault, Julien Sedlak
  • Patent number: 8038387
    Abstract: A bearing for a turbomachine variable pitch stator vane pivot mounted in a bore of the turbomachine casing is disclosed. The bearing includes an inner bushing secured to the pivot and an outer bushing secured to the bore. An elastomeric material is inserted between the inner bushing and the outer bushing to allow the vane to pivot about its axis and absorb at least some of the flexing of the pivot at right angles to the axis. The design makes it possible to reduce bearing bushing wear.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: October 18, 2011
    Assignee: SNECMA
    Inventors: Emmanuel Houradou, Herve Hulin, Sebastien Juste, Dominique Raulin
  • Publication number: 20110229326
    Abstract: The invention relates to a structure and aerodynamic module comprising two blades each extending along a longitudinal axis, each blade each comprising a leading edge, a trailing edge, a radially inner edge and a radially outer edge, the module also comprising a radially inner platform mechanically connecting the radially inner edges of the two blades, and a radially outer platform mechanically connecting the radially outer edges of the two blades such that the two blades and the radially outer and inner platforms delimit a flow stream, the two blades and the platforms being made from a composite material and the two blades being fixed on the radially outer and inner platforms using screw-nut assemblies.
    Type: Application
    Filed: February 22, 2011
    Publication date: September 22, 2011
    Applicant: SNECMA
    Inventors: Thierry Georges Paul PAPIN, Alain Raffy, Dominique Raulin
  • Publication number: 20110073745
    Abstract: A structural frame for a turbomachine, such as an intermediate frame or an exhaust frame, the frame including at least two coaxial rings, an inner ring and an outer ring, together with radial arms interconnecting the rings. At least one of these elements includes a plurality of parts that are fastened together by bolting.
    Type: Application
    Filed: May 14, 2009
    Publication date: March 31, 2011
    Applicant: SNECMA
    Inventors: Thierry François Maurice Duchatelle, Thierry Georges Paul Papin, Dominique Raulin, Arnaud Sanchez
  • Publication number: 20090202341
    Abstract: The invention relates to a turbomachine module comprising a device to improve radial clearances, comprising an outer casing (22), an inner casing (21) and at least one shock absorbing ring (5) connecting the casings, the module also comprising an annular cavity (43) on the downstream side of the ring (5), with a passage (42) formed in it through which an airflow (4) is drawn off from the primary flow (Fp). According to the invention, the device to improve radial clearances comprises a thermal inertia control device for the shock absorbing ring mounted on the shock absorbing ring (5), downstream from it, this device comprising at least one coat of thermal insulation (8), and at least partly delimiting the annular cavity (43) on the downstream side of it (43).
    Type: Application
    Filed: December 12, 2008
    Publication date: August 13, 2009
    Applicant: SNECMA
    Inventors: Antoine Robert, Alain BRUNET, Claude CHOMEL, Sebastien JUSTE, Emmanuel HOURADOU, Dominique RAULIN, Frederic RENAULT, Julien SEDLAK
  • Patent number: 7530784
    Abstract: A device for controlling variable-pitch vanes in a turbomachine has rods each having at one end a finger for mounting in a control ring and at its other end an assembly orifice for mounting on a drive square of a vane, the axis of the vane being inclined relative to the axis of the finger of the rod, and the assembly orifice in the rod presenting a dimension in the longitudinal direction of the rod that is greater than that of the drive square, and co-operating therewith to define clearance that varies over the height of the drive square and of the orifice.
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: May 12, 2009
    Assignee: SNECMA
    Inventors: Francois Pierre Georges Maurice Ribassin, Dominique Raulin
  • Publication number: 20080031730
    Abstract: The present invention relates to a bearing (20) for a turbomachine variable pitch stator vane pivot (14) mounted in a bore of the turbomachine casing, and which comprises an inner bushing (22) secured to said pivot and an outer bushing (21) secured to said bore, an elastomeric material (23) being inserted between the inner bushing and the outer bushing to allow the vane to pivot about its axis (XX) and absorb at least some of the flexing of the pivot at right angles to the axis. The design makes it possible to reduce bearing bushing wear.
    Type: Application
    Filed: June 20, 2007
    Publication date: February 7, 2008
    Applicant: SNECMA
    Inventors: Emmanuel Houradou, Herve Hulin, Sebastien Juste, Dominique Raulin
  • Publication number: 20060285969
    Abstract: A device for controlling variable-pitch vanes in a turbomachine has rods each having at one end a finger for mounting in a control ring and at its other end an assembly orifice for mounting on a drive square of a vane, the axis of the vane being inclined relative to the axis of the finger of the rod, and the assembly orifice in the rod presenting a dimension in the longitudinal direction of the rod that is greater than that of the drive square, and co-operating therewith to define clearance that varies over the height of the drive square and of the orifice.
    Type: Application
    Filed: February 1, 2006
    Publication date: December 21, 2006
    Applicant: SNECMA
    Inventors: Francois Maurice Ribassin, Dominique Raulin
  • Patent number: 7140838
    Abstract: The manufacturing cost of the control device is relatively low. This device comprises mainly a first end (46) of a control lever (40) provided with a drive hole (45) that drives the driving part (16) of a blade (10) through a first contact area (41). The close contact between these two parts in this area is obtained using a play compensation plate (50) bearing on a side part (47) of the control lever (40), and fixed to the assembly using a nut (60) screwed onto the external pivot (11) of the blade (10). For application on turbomachines.
    Type: Grant
    Filed: May 4, 2004
    Date of Patent: November 28, 2006
    Assignee: Snecma Moteurs
    Inventors: Dominique Raulin, Alain Chatel