Patents Assigned to Safran Transmission Systems
  • Patent number: 12123479
    Abstract: A planet carrier for a speed reducer of an aircraft turbomachine, the planet carrier including a cage carrier and a cage. The cage can have two parts: a first part having a wall and bridges, these bridges projecting axially from a face of this wall and including first axial ends connected to this face and second free axial ends; and a second part having another of the walls, this other wall including a face to which the free ends of the bridges are applied. The two parts of the cage can be attached together by screws.
    Type: Grant
    Filed: September 6, 2023
    Date of Patent: October 22, 2024
    Assignee: Safran Transmission Systems
    Inventors: Guillaume Pierre Mouly, Guillaume Julien Beck, Patrice Julien Ptaszynski, Jean-Pierre Serey, Adrien Louis Simon
  • Patent number: 12123490
    Abstract: A planet carrier for a mechanical gearbox of a turbomachine, in particular for an aircraft, the planet carrier being formed in a single piece and comprising two annular flasks connected by material bridges and together defining housings configured to receive planet gears, the flasks comprising orifices for mounting the planet gears which are oriented axially and which open into the housings. One of the flasks can include at least one thinning around its orifices, the at least one thinning defining a minimum thickness of material in the axial direction which is less than a minimum thickness of the other flask around each of its orifices.
    Type: Grant
    Filed: June 9, 2023
    Date of Patent: October 22, 2024
    Assignee: Safran Transmission Systems
    Inventor: Guillaume Pierre Mouly
  • Patent number: 12072002
    Abstract: A ring gear for an aircraft mechanical gearbox, the ring gear having an annular shape about an axis and having an internal toothing at its internal periphery, an external annular flange or splines at its external periphery, and an annular web extending between the internal toothing and the external flange or splines. The web can include an annular row of arms which are distributed about the axis, these arms connecting the internal toothing to the external flange or splines and being formed in a single piece with the internal toothing and the external flange or splines.
    Type: Grant
    Filed: December 8, 2023
    Date of Patent: August 27, 2024
    Assignee: Safran Transmission Systems
    Inventors: Loïc Francois, Boris Pierre Marcel Morelli, Florent Lejeune
  • Patent number: 12065976
    Abstract: An oil recovery device for a reducer of an aircraft turbomachine, the device having a gutter extending around an axis and being intended to be arranged facing oil ejection means formed in a ring gear of the reducer of the turbomachine. The gutter can include at least one oil reception chamber which extends around the axis and which is open towards the axis so as to receive the oil coming from the oil ejection means. The reception chamber can be delimited by a first wall and a second wall arranged facing each other. The first wall can have an axial oil evacuation orifice and the second wall can have a radial dimension relative to the axis which increases increasingly along the axis towards the axial orifice, so as to allow oil ejected by the reducer to be conveyed to the axial orifice.
    Type: Grant
    Filed: July 7, 2023
    Date of Patent: August 20, 2024
    Assignees: Safran Aircraft Engines, Safran Transmission Systems
    Inventors: Antoine Jacques Marie Pennacino, Amélie Argie Antoinette Chassagne, Patrice Jocelyn Francis Gedin, Juan-Luis Marcos Izquierdo, Jordane Emile André Peltier
  • Patent number: 11448134
    Abstract: A drive gearbox for turbomachine equipment, the drive gearbox having a main shaft intended to be rotationally connected to a power transmission shaft of a turbomachine. The main shaft has at least one bevel gear rotationally driving at least one piece of equipment. The gearbox has gear set with cylindrical gearwheels that have an input connected to the rotational drive to the main shaft and a plurality of outputs each intended to drive a piece of equipment. The gear set extends over an angular sector and the outputs are angularly spaced apart along the angular sector.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: September 20, 2022
    Assignee: Safran Transmission Systems
    Inventors: Maxence Guillemont, Fanélie Drevon, Julien Viel
  • Patent number: 11242922
    Abstract: An annular power transmission element with a longitudinal axis that has a first annular part, a second annular part with torque transmission means and a third annular part. The first, second and third annular parts are integral with each other. The first annular part and the third annular part are made of a first metallic material and the second annular part is made of a second metallic material having a density greater than the density of the first metallic material. The second annular part is locked longitudinally between the first annular part and the third annular part and radially on the first annular part, the first annular part is in contact with the third annular part and welded thereto.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: February 8, 2022
    Assignee: Safran Transmission Systems
    Inventor: Gilles Gaston Jacques Gouin
  • Publication number: 20210396184
    Abstract: A mechanical gearbox for an aircraft turbomachine includes a sun gear having an axis (X) of rotation, a ring gear around the sun gear, and planet gears meshed with the sun gear and the ring gear. Each planet gear has a first toothing meshed with the sun gear and a second toothing meshed with the ring gear. The first toothing includes a series of upstream teeth and a series of downstream teeth located on either side of a plane (H) perpendicular to the axis (X) of rotation of the sun gear. The second toothing includes a series of upstream teeth and a series of downstream teeth located on either side of said plane (H) and separated from one another by said first toothing, these teeth being parallel to one another and to the axis (Y) of rotation of the planet gear.
    Type: Application
    Filed: June 11, 2021
    Publication date: December 23, 2021
    Applicant: Safran Transmission Systems
    Inventors: Guillaume Julien Beck, Dhafer Ghribi, Simon Loïc Clément Lefebvre, Quentin Pierre Henri Pigott, Adrien Louis Simon
  • Patent number: 11085510
    Abstract: A toothed wheel extending along an axis and comprising at least two annular toothed areas and an annular groove located axially between said toothed areas, intended for collecting lubricating oil from said toothed areas, characterized in that said groove is delimited by an axially extending bottom surface and radially extending lateral surfaces, characterized in that the groove has at least one projecting portion extending radially outwards from the bottom surface of the groove.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: August 10, 2021
    Assignee: Safran Transmission Systems
    Inventors: Antoine Jacques Marie Pennacino, Mathieu Jean Charrier, Boris Pierre Marcel Morelli
  • Publication number: 20200386299
    Abstract: A planetary gearset having a first planet gear, a second planet gear, and pinion gears. The pinion gears mesh with the first planet gear and with the second planet gear, and each pinion gear is pivotally mounted around a shaft. A pinion gear carrier supports each shaft. Each shaft has a radially inner cylindrical portion mounted on the pinion gear carrier, a radially outer cylindrical portion about which the pinion gear is pivotally mounted and a flange extending radially from the radially outer cylindrical portion. The radially outer periphery of the flange is mounted on the pinion gear carrier. The radially outer cylindrical portion and the radially inner cylindrical portion are connected to each other by a radially extending connecting zone.
    Type: Application
    Filed: November 29, 2018
    Publication date: December 10, 2020
    Applicant: Safran Transmission Systems
    Inventors: Adrien Louis Simon, Simon LoÏc Clément Lefebvre, Guillaume Jean Pierre Robinet
  • Patent number: 10688608
    Abstract: A method for aligning toothing in an assembly of two half-ring gears is provided: an angular positioning pin is provided which is to be received in respective holes of the half-ring gears; the holes are drilled on the first half-ring gear such that the first hole has a first cross-section that is smaller than the final cross-section thereof; the angles between the teeth are compared between the two half-ring gears, and an angular difference between said angles of the half-ring gears is deduced therefrom; the first hole is redrilled to the final cross-section, while the centre of the hole is angularly shifted by the value of the angular difference; the pin is engaged in the holes, and the half-ring gears are then assembled using an interference fit.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: June 23, 2020
    Assignee: Safran Transmission Systems
    Inventors: Pauline Marie Cécile Autran, Guillaume Beck, Boris Morelli, Jordane Peltier, Jean Clayette
  • Publication number: 20200132167
    Abstract: A toothed wheel extending along an axis and comprising at least two annular toothed areas and an annular groove located axially between said toothed areas, intended for collecting lubricating oil from said toothed areas, characterized in that said groove is delimited by an axially extending bottom surface and radially extending lateral surfaces, characterized in that the groove has at least one projecting portion extending radially outwards from the bottom surface of the groove.
    Type: Application
    Filed: October 24, 2019
    Publication date: April 30, 2020
    Applicant: Safran Transmission Systems
    Inventors: Antoine Jacques Marie Pennacino, Mathieu Jean Charrier, Boris Pierre Marcel Morelli
  • Patent number: 10598044
    Abstract: An oil jet for a turbine engine, comprising a body including a circulation pipe intended for the flow of a pressurized fluid. The jet's body comprises a first part and a second part between which a resiliently deformable membrane is inserted, said membrane being capable of deforming between a sealed position in which it prevents the circulation of the fluid in the pipe and a position in which it allows the circulation of fluid in the pipe. The second part includes bearing means configured to exert a force on the membrane positioned in the opposite direction to the circulation of fluid so as to preload the membrane when in blocked position.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: March 24, 2020
    Assignee: Safran Transmission Systems
    Inventors: Lionel Bauduin, Maxence Guillemont, Julien Viel
  • Publication number: 20200072335
    Abstract: An annular power transmission element with a longitudinal axis that has a first annular part, a second annular part with torque transmission means and a third annular part. The first, second and third annular parts are integral with each other. The first annular part and the third annular part are made of a first metallic material and the second annular part is made of a second metallic material having a density greater than the density of the first metallic material. The second annular part is locked longitudinally between the first annular part and the third annular part and radially on the first annular part, the first annular part is in contact with the third annular part and welded thereto.
    Type: Application
    Filed: August 29, 2019
    Publication date: March 5, 2020
    Applicant: Safran Transmission Systems
    Inventor: Gilles Gaston Jacques Gouin
  • Patent number: 10550723
    Abstract: A wheel for distributing a lubricant in a turbine engine has an axis from which an annular cavity extends, open radially towards the axis and from which first and second lubricant supply lines depart for various members to be lubricated. Parallel to the axis, the annular cavity is split into at least a first and a second annular sub-cavity, which are separated by a substantially radial partition and which communicate with the first and second lines respectively.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: February 4, 2020
    Assignee: Safran Transmission Systems
    Inventors: Patrice Gedin, Pauline Marie Cecille Autran, Cécile Bruot, Guillaume Julien Beck, Alexis Dombek, Julie Lemoine, Jordane Peltier
  • Patent number: 10392978
    Abstract: A device for filtering a flow of gas conveying liquid or solid particles in a flow channel. According to the invention, the particles are imparted a speed that is high enough to project same by inertia into the opening of a recovery channel formed inside the flow channel, while the gas from the flow bypasses said opening due to a specific configuration of the flow conditions of a perfect fluid in the flow channel and in the collection channel.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: August 27, 2019
    Assignee: Safran Transmission Systems
    Inventors: Lionel Bauduin, Maxence Guillemont, Julien Viel, Stéphane Prunera-Usach
  • Patent number: 10343270
    Abstract: The invention concerns a device (1) for hoop reinforcing of restrictors inside at least two hydraulic supply standby systems of a journal bearing. Said device is remarkable in that it comprises: a frame (2) for receiving said hearing, a syringe (3) for introducing said restrictors and a torque pick-off spindle (4), and in that said frame (2) comprises: a cradle (21), a guide plate (23) pierced with two guide openings (231), inclined at the same angle as those of said backup systems of the bearing, so as to be located in the extension of same when the bearing is in the frame, said guide openings (231) being shaped to receive said syringe (3) or said torque pick-off spindle (4).
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: July 9, 2019
    Assignee: Safran Transmission Systems
    Inventor: Alexis Dombek
  • Publication number: 20190048801
    Abstract: A drive gearbox for turbomachine equipment, the drive gearbox having a main shaft intended to be rotationally connected to a power transmission shaft of a turbomachine. The main shaft has at least one bevel gear rotationally driving at least one piece of equipment. The gearbox has gear set with cylindrical gearwheels that have an input connected to the rotational drive to the main shaft and a plurality of outputs each intended to drive a piece of equipment. The gear set extends over an angular sector and the outputs are angularly spaced apart along the angular sector.
    Type: Application
    Filed: September 13, 2016
    Publication date: February 14, 2019
    Applicant: Safran Transmission Systems
    Inventors: Maxence Guillemont, Fanelle Drevon, Julien Viel
  • Publication number: 20190032514
    Abstract: The invention relates to a wheel (35) for distributing a lubricant in a turbine engine, wherein the wheel has an axis from which an annular cavity extends, open radially towards the axis and from which first and second lubricant supply lines (43, 45) depart for various members to be lubricated. Parallel to the X axis, the annular cavity is split into at least a first and a second annular sub-cavity, which are separated by a substantially radial partition (38) and which communicate with the first and second lines (43, 45) respectively.
    Type: Application
    Filed: January 27, 2017
    Publication date: January 31, 2019
    Applicant: Safran Transmission Systems
    Inventors: Patrice GEDIN, Pauline Marie Cecille AUTRAN, Cécile BRUOT, Guillaume Julien BECK, Alexis DOMBEK, Julie LEMOINE, Jordane PELTIER
  • Publication number: 20180371944
    Abstract: An oil jet for a turbine engine, comprising a body including a circulation pipe intended for the flow of a pressurized fluid. The jet's body comprises a first part and a second part between which a resiliently deformable membrane is inserted, said membrane being capable of deforming between a sealed position in which it prevents the circulation of the fluid in the pipe and a position in which it allows the circulation of fluid in the pipe. The second part includes bearing means configured to exert a force on the membrane positioned in the opposite direction to the circulation of fluid so as to preload the membrane when in blocked position.
    Type: Application
    Filed: March 31, 2016
    Publication date: December 27, 2018
    Applicant: Safran Transmission Systems
    Inventors: Lionel Bauduin, Maxence Guillemont, Julien Viel
  • Publication number: 20180297157
    Abstract: A method for aligning toothing in an assembly of two half-ring gears is provided: an angular positioning pin is provided which is to be received in respective holes of the half-ring gears; the holes are drilled on the first half-ring gear such that the first hole has a first cross-section that is smaller than the final cross-section thereof; the angles between the teeth are compared between the two half-ring gears, and an angular difference between said angles of the half-ring gears is deduced therefrom; the first hole is redrilled to the final cross-section, while the centre of the hole is angularly shifted by the value of the angular difference; the pin is engaged in the holes, and the half-ring gears are then assembled using an interference fit.
    Type: Application
    Filed: October 13, 2016
    Publication date: October 18, 2018
    Applicant: Safran Transmission Systems
    Inventors: Pauline Marie Cecile Autran, Guillaume Beck, Boris Morelli, Jordane Peltier, Jean Clayette