Patents by Inventor Jean-Baptiste Etienne Bernard Lepretre

Jean-Baptiste Etienne Bernard Lepretre 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: 11384695
    Abstract: An assembly includes: a fan drive reducing gear of an aircraft turbine engine, and a lubrication system including: a housing enclosing the reducing gear; a device for spraying lubricant onto the reducing gear; a lubricant supply pipe intended to convey the lubricant towards the spraying device; a lubricant recovery pipe communicating with a bottom of the housing; a controlled valve equipping the recovery pipe; and a lubricant overflow discharge pipe connected to an overflow outlet of the bottom of the housing situated above a horizontal level of a bottom point of a gearing of the reducing gear, and to the recovery pipe, downstream from the valve.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: July 12, 2022
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventor: Jean-Baptiste Etienne Bernard Lepretre
  • Publication number: 20210246834
    Abstract: An assembly includes: a fan drive reducing gear of an aircraft turbine engine, and a lubrication system including: a housing enclosing the reducing gear; a device for spraying lubricant onto the reducing gear; a lubricant supply pipe intended to convey the lubricant towards the spraying device; a lubricant recovery pipe communicating with a bottom of the housing; a controlled valve equipping the recovery pipe; and a lubricant overflow discharge pipe connected to an overflow outlet of the bottom of the housing situated above a horizontal level of a bottom point of a gearing of the reducing gear, and to the recovery pipe, downstream from the valve.
    Type: Application
    Filed: June 12, 2019
    Publication date: August 12, 2021
    Applicant: SAFRAN AIRCRAFT ENGINES
    Inventor: Jean-Baptiste Etienne Bernard LEPRETRE
  • Patent number: 9982556
    Abstract: The present invention relates to a turbine engine (10) comprising: at least one hollow guidance arm (44) radially extending from a hub (38) to an annular housing (42), and having one radially external end which opens out in an opening (60) of said annular housing, a radial countershaft (48) located in said guidance arm (44) for rotatably driving at least one device arranged at the periphery of said annular housing (42). According to the invention, a transfer case (50) is disposed facing the opening (60) of the annular housing, and the turbine engine comprises rotational power transfer means (78, 52) between the radial countershaft (48) and the device, with the guidance arm (44) being equipped, at the external end thereof, with a widened section (56) by which it opens out in the opening (60) of the annular housing and in which part of the transfer case (50) is accommodated.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: May 29, 2018
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventor: Jean-Baptiste Etienne Bernard Lepretre
  • Patent number: 9790804
    Abstract: A gearbox for an aircraft turbine engine has a casing defining an enclosure for housing rotating elements lubricated by oil. At least one tubular sleeve is coupled to the rotating elements and configured to rotate a shaft. The sleeve includes splines configured to cooperate with complementary splines of said shaft. The gearbox further includes means for recovering lubricating oil from the rotating elements and conveying the recovered oil by streaming to the splines to lubricate the splines.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: October 17, 2017
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventor: Jean-Baptiste Etienne Bernard Lepretre
  • Publication number: 20170138214
    Abstract: A gearbox for an aircraft turbine engine has a casing defining an enclosure for housing rotating elements lubricated by oil. At least one tubular sleeve is coupled to the rotating elements and configured to rotate a shaft. The sleeve includes splines configured to cooperate with complementary splines of said shaft. The gearbox further includes means for recovering lubricating oil from the rotating elements and conveying the recovered oil by streaming to the splines to lubricate the splines.
    Type: Application
    Filed: May 22, 2015
    Publication date: May 18, 2017
    Applicant: SAFRAN AIRCRAFT ENGINES
    Inventor: Jean-Baptiste Etienne Bernard Lepretre
  • Publication number: 20170122122
    Abstract: The present invention relates to a turbine engine (10) comprising: at least one hollow guidance arm (44) radially extending from a hub (38) to an annular housing (42), and having one radially external end which opens out in an opening (60) of said annular housing, a radial countershaft (48) located in said guidance arm (44) for rotatably driving at least one device arranged at the periphery of said annular housing (42). According to the invention, a transfer case (50) is disposed facing the opening (60) of the annular housing, and the turbine engine comprises rotational power transfer means (78, 52) between the radial countershaft (48) and the device, with the guidance arm (44) being equipped, at the external end thereof, with a widened section (56) by which it opens out in the opening (60) of the annular housing and in which part of the transfer case (50) is accommodated.
    Type: Application
    Filed: June 11, 2015
    Publication date: May 4, 2017
    Applicant: Safran Aircraft Engines
    Inventor: Jean-Baptiste Etienne Bernard Lepretre