Patents by Inventor Olivier Lafargue

Olivier Lafargue 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).

  • Publication number: 20210362869
    Abstract: The invention relates to an aircraft power architecture comprising a power transmission gearbox (12), located in a first compartment (30), a gas turbine (14), located in a second compartment (32) comprising a gas generator (18) and a free turbine (22) connected to the power transmission gearbox (12) by a power shaft (26) of the gas turbine (14), and an accessory gearbox (16), the gas turbine (14) being set into the main transmission gearbox (12), characterized in that the gas turbine (14) comprises a first electric machine (38), and in that the accessory gearbox (16) is placed in the first compartment (30) and comprises a second electric machine (42) configured to supply energy to the accessory equipment and to receive electrical energy transmitted via the first electric machine (38).
    Type: Application
    Filed: May 9, 2019
    Publication date: November 25, 2021
    Inventors: Olivier LAFARGUE, Thomas KLONOWSKI
  • Patent number: 11047312
    Abstract: An electrical generator is housed in an annular cavity between the casing and the propeller shaft of a turboprop, while imposing little or no additional space requirement and with lightweight ancillary equipment. The rotor of the generator is mounted on an autonomous shaft end. A flange of the outer casing is removable in order to access the generator and to enable its easy removal and remounting.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: June 29, 2021
    Assignee: SAFRAN HELICOPTER ENGINES
    Inventors: Thomas Klonowski, David Cazaux, Olivier Lafargue
  • Patent number: 10961867
    Abstract: A turboshaft engine for a helicopter, comprising a case inside which a gas generator and a turbine are accommodated, the turbine being mounted on a power shaft that extends along a longitudinal direction. The turboshaft engine further comprises means for removably mounting the power shaft into a reduction gearbox inside which at least one gear of a first reduction stage is accommodated. The means for removably mounting the power shaft include a pinion having a central bore, the shape of which is adapted to that of the power shaft in such a way that the pinion can slide over the power shaft; furthermore, the contour of the pinion is adapted to the shape of the gear of the first stage in such a way that the pinion can form a leading input pinion of the gearbox in said gear once the power shaft has been mounted in the reduction gearbox.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: March 30, 2021
    Assignee: SAFRAN HELICOPTER ENGINES
    Inventors: Olivier Lafargue, Sébastien Brotier, Alphonse Puerto
  • Publication number: 20210003079
    Abstract: An electrical generator is housed in an annular cavity between the casing and the propeller shaft of a turboprop, while imposing little or no additional space requirement and with lightweight ancillary equipment. The rotor of the generator is mounted on an autonomous shaft end. A flange of the outer casing is removable in order to access the generator and to enable its easy removal and remounting.
    Type: Application
    Filed: February 28, 2018
    Publication date: January 7, 2021
    Inventors: Thomas KLONOWSKI, David CAZAUX, Olivier LAFARGUE
  • Patent number: 10807724
    Abstract: The electrical machine according to the invention is a dual machine, and comprises a first machine which can be reversed and a second machine functioning through induction between two windings. The second machine can be used for de-icing a propeller, the induction-receiving winding being mounted on the propeller shaft. The first electrical machine can function as an electrical engine to ‘taxi’ the aircraft. In certain embodiments, the winding mounted on the stator is common to the two machines and different magnetic flows are utilised to control them. A separate functioning of the two machines and a very good integration into the aircraft engine, with space-saving and low mass, are possible.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: October 20, 2020
    Assignee: SAFRAN HELICOPTER ENGINES
    Inventors: Thomas Klonowski, Olivier Lafargue, Antoine Moutaux, Jean-Julien Camille Vonfelt, Bertrand Nogarede
  • Patent number: 10662875
    Abstract: A propulsion unit, notably for an aircraft, including a turbomachine; a propeller that can be selectively coupled to the turbomachine; a rotary electrical machine able to drive at least the turbomachine, and selective coupling of the rotary electric machine to the propeller and/or the turbomachine that is able to couple only the propeller to the rotary electrical machine during a defined stage of operation of the propulsion unit and that is able to couple or not couple the rotary electric machine to a gas generator and/or a free turbine of the turbomachine.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: May 26, 2020
    Assignee: SAFRAN HELICOPTER ENGINES
    Inventors: Olivier Lafargue, Didier Chartrain, Camel Serghine
  • Patent number: 10458341
    Abstract: A turboshaft engine includes a casing in which is arranged a gas generator and a free turbine fitted to a power shaft. The power shaft is configured to be mechanically connected to/disconnected from a reduction gearbox. The turboshaft engine includes at least one centralizer movable between an active position, in which the centralizer forms a bearing for the power shaft and which corresponds to a mechanical disconnection between the power shaft and the reduction gearbox, and a passive position, in which the centralizer is distanced from the power shaft and which corresponds to a mechanical connection between the power shaft the reduction gearbox.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: October 29, 2019
    Assignee: SAFRAN HELICOPTER ENGINES
    Inventors: Olivier Lafargue, Sébastien Brotier
  • Publication number: 20190233128
    Abstract: The electrical machine according to the invention is a dual machine, and comprises a first machine which can be reversed and a second machine functioning through induction between two windings. The second machine can be used for de-icing a propeller, the induction-receiving winding being mounted on the propeller shaft. The first electrical machine can function as an electrical engine to ‘taxi’ the aircraft. In certain embodiments, the winding mounted on the stator is common to the two machines and different magnetic flows are utilised to control them. A separate functioning of the two machines and a very good integration into the aircraft engine, with space-saving and low mass, are possible.
    Type: Application
    Filed: October 2, 2017
    Publication date: August 1, 2019
    Inventors: Thomas KLONOWSKI, Olivier LAFARGUE, Antoine MOUTAUX, Jean-Julien Camille VONFELT, Bertrand NOGAREDE
  • Publication number: 20180298827
    Abstract: A turboshaft engine includes a in which is arranged a gas generator and a free turbine fitted to a power shaft. The power shaft is configured to be mechanically connected to/disconnected from a reduction gearbox. The turboshaft engine includes at least one centraliser movable between an active position, in which the centraliser forms a bearing for the power shaft and which corresponds to a mechanical disconnection between the power shaft and the reduction gearbox, and a passive position, in which the centraliser is distanced from the power shaft and which corresponds to a mechanical connection between the power shaft the reduction gearbox.
    Type: Application
    Filed: April 26, 2016
    Publication date: October 18, 2018
    Applicant: SAFRAN HELICOPTER ENGINES
    Inventors: Olivier Lafargue, Sébastien Brotier
  • Publication number: 20180119571
    Abstract: A turboshaft engine for a helicopter, comprising a case inside which a gas generator and a turbine are accommodated, the turbine being mounted on a power shaft that extends along a longitudinal direction. The turboshaft engine further comprises means for removably mounting the power shaft into a reduction gearbox inside which at least one gear of a first reduction stage is accommodated. The means for removably mounting the power shaft include a pinion having a central bore, the shape of which is adapted to that of the power shaft in such a way that the pinion can slide over the power shaft; furthermore, the contour of the pinion is adapted to the shape of the gear of the first stage in such a way that the pinion can form a leading input pinion of the gearbox in said gear once the power shaft has been mounted in the reduction gearbox.
    Type: Application
    Filed: April 26, 2016
    Publication date: May 3, 2018
    Applicant: SAFRAN HELICOPTER ENGINES
    Inventors: Olivier Lafargue, Sébastien Brotier, Alphonse Puerto
  • Publication number: 20170321601
    Abstract: A propulsion unit, notably for an aircraft, including a turbomachine; a propeller that can be selectively coupled to the turbomachine; a rotary electrical machine able to drive at least the turbomachine, and selective coupling of the rotary electric machine to the propeller and/or the turbomachine that is able to couple only the propeller to the rotary electrical machine during a defined stage of operation of the propulsion unit and that is able to couple or not couple the rotary electric machine to a gas generator and/or a free turbine of the turbomachine.
    Type: Application
    Filed: November 24, 2015
    Publication date: November 9, 2017
    Applicant: SAFRAN HELICOPTER ENGINES
    Inventors: Olivier LAFARGUE, Didier CHARTRAIN, Camel SERGHINE
  • Publication number: 20020164681
    Abstract: The invention relates to gelatins with improved gliding power, to processes for their preparation and their applications in particular in the manufacture of capsules.
    Type: Application
    Filed: April 25, 2002
    Publication date: November 7, 2002
    Inventors: Olivier Lafargue, Jacky David, Georges Takerkart
  • Publication number: 20020165359
    Abstract: The invention relates to gelatins with improved gliding power, to processes for their preparation and their applications in particular in the manufacture of capsules.
    Type: Application
    Filed: May 17, 2001
    Publication date: November 7, 2002
    Inventors: Olivier Lafargue, Jacky David, Georges Takerkart