Patents Assigned to SAFRAN LANDING SYSTEMS
  • Method for producing a low-alloy steel ingot
    Patent number: 11560612
    Abstract: A method of fabricating a low alloy steel ingot, the method including a) melting all or part of an electrode by a vacuum arc remelting method, the electrode, before melting, including iron and carbon, the melted portion of the electrode being collected in a crucible, thus forming a melt pool within the crucible; and b) solidifying the melt pool by heat exchange between the melt pool and a cooling fluid, the heat exchange applied serving to impose a mean solidification speed during step b) that is less than or equal to 45 ?m/s and to obtain an ingot of low alloy steel.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: January 24, 2023
    Assignees: SAFRAN AIRCRAFT ENGINES, SAFRAN LANDING SYSTEMS
    Inventors: Laurent Ferrer, Nicolas Binot
  • Undercarriage provided with a lightning protection device
    Patent number: 11554878
    Abstract: An aircraft undercarriage including electrical equipment (2, 3) fastened to a portion (1) of the undercarriage and a lightning protection device (10) comprising at least one shield fastened to said portion (1) of the undercarriage by fastener means so as to extend in register with the electrical equipment (2, 3) in a position that is spaced apart therefrom, the shield comprising at least a first plate (11) made of electrically conductive material that is arranged to absorb a major portion of the heat energy that is generated by the passage of a lightning wave and to discharge the electric charge of the lightning wave. An aircraft fitted with such an undercarriage.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: January 17, 2023
    Assignee: SAFRAN LANDING SYSTEMS
    Inventors: Jérôme Gui, Alexandre Avenet, Pierre Pizana, Yvain Serignac
  • Method of moving doors of a well for an aircraft undercarriage
    Patent number: 11548624
    Abstract: A method of moving a door of a well for an aircraft undercarriage during sequences of deploying or retracting the undercarriage includes: using a temporary mechanical connection between the door and the undercarriage that is effective when the undercarriage is close to its retracted position, causing the door to be opened by the undercarriage while the undercarriage is being deployed and causing the door to be closed by the undercarriage while the undercarriage is being retracted, but releasing the door from the undercarriage when the undercarriage is close to its deployed position, and using a door actuator acting on the door to close and open the door when the undercarriage is in its deployed position and the temporary mechanical connection is interrupted.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: January 10, 2023
    Assignee: SAFRAN LANDING SYSTEMS
    Inventors: Yannick Senechal, Vincent Pascal, Thierry Blanpain, Aurélien Doux
  • Roller gearing element
    Patent number: 11549577
    Abstract: An improved serviceability gearing element generally includes a support having a plurality of obstacles for co-operating with teeth of a neighboring gearing element. The gearing element further includes a pin, a roller mounted to move in rotation about the pin via a rotary guide, blocking bearings shaped substantially to prevent the roller from moving in translation along the pin, and one or more fasteners for fastening at least one of the blocking bearings to the support.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: January 10, 2023
    Assignee: SAFRAN LANDING SYSTEMS
    Inventors: Gilles Eluard, Stéphane Lambre
  • LANDING GEAR STORAGE AND QUICK SERVICING SOLUTION
    Publication number: 20230002038
    Abstract: A method for pressurizing and depressurizing a shock absorber of an aircraft. More specifically, it relates to a method in which an aircraft weight and ambient temperature are used to calculate a required pressurization level of a shock absorber. As such, the shock absorber may be pressurized to the correct level without applying an iterative approach, greatly reducing initialization time.
    Type: Application
    Filed: September 7, 2022
    Publication date: January 5, 2023
    Applicant: Safran Landing Systems UK LTD
    Inventors: Yann Simonneaux, Jon Smith
  • Locking device with a pulse-controlled rotary lock
    Patent number: 11541855
    Abstract: The invention provides a locking device for preventing movement between two elements (11, 12) that are mounted to move relative to each other, the locking device including a lock (31) mounted to rotate relative to one of the elements in order to present successive angular positions for locking and for release in which the lock alternates between preventing and allowing relative movement between the two elements, the lock being constrained to rotate with a selector (55) of an angular indexing mechanism (50) actuated by a pulse-controlled actuator (70, 71) arranged to push the selector against a spring member (58) in order to cause it to turn on each pulse and thereby cause the lock to pass from one angular position to the other.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: January 3, 2023
    Assignee: SAFRAN LANDING SYSTEMS
    Inventors: Bertrand Dubacher, Marc Quernerch'Du, Bertrand Euzet
  • Extension logic for hyperloop/maglev vehicle
    Patent number: 11541918
    Abstract: A disclosed method extends a support system for a maglev vehicle, the support system having at least a first landing gear assembly and a second landing gear assembly. The method includes the steps of determining a weight-on-wheels status for each of the first and the second landing gear assemblies and determining a distance from each of the first and second landing gear assemblies to a support surface. First and second extension speeds are determined for each of the first and second landing gear assemblies, respectively. The first landing gear assembly is extended at the first extension speed until the first landing gear assembly reaches a weight-on-wheels condition, and the second landing gear assembly is extended at the second extension speed until the second landing gear assembly reaches the weight-on-wheels condition.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: January 3, 2023
    Assignees: SAFRAN LANDING SYSTEMS, SAFRAN LANDING SYSTEMS CANADA INC.
    Inventors: Andrew Michael Ellis, Graeme Peter Arthur Klim, Thibaud Mazoue
  • SYSTEM FOR CONTROLLING AN AIRCRAFT THRUST REVERSAL MEANS
    Publication number: 20220412287
    Abstract: This system (36) for controlling an aircraft thrust reversal means comprises a reverse idle control means (38), a first detection means (31) configured to detect, when the reverse idle control is active, a condition for activation of the thrust reversal means, and an actuation means (52) configured to activate the thrust reversal means when the first detection means (31) detects a condition for activation of the thrust reversal means. It further comprises a second detection means (42, 44, 46, 48, 49) configured to detect a condition for activation of the reverse idle control, the control means (38) being configured to activate the reverse idle control when the second detection means (42, 44, 46, 48, 49) detects a condition for activating the reverse idle control.
    Type: Application
    Filed: December 23, 2020
    Publication date: December 29, 2022
    Applicants: SAFRAN NACELLES, SAFRAN LANDING SYSTEMS, SAFRAN ELECTRONICS & DEFENSE ACTUATION, SAFRAN AIRCRAFT ENGINES
    Inventors: Laurent MIRALLES, Hakim MAALIOUNE, Christophe BASTIDE, Jérémy Edmond FERT, Vincent HUPIN
  • Emergency braking method for an aircraft
    Patent number: 11535367
    Abstract: An emergency braking method for aircraft, comprising using a progressing parking brake controlled by a lever (10) that can be actuated by the pilot between a “0%” position in which the brakes are connected to the return pressure of the aircraft, and a “100%” position in which the brakes are connected to the feed pressure of the aircraft, the lever being blockable in the 100% position in order to provide parking braking when the aircraft is stationary.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: December 27, 2022
    Assignee: SAFRAN LANDING SYSTEMS
    Inventors: David Frank, Jérôme Fraval, Donny Warint
  • DIAPHRAGM HOLDER FOR AN OLEO-PNEUMATIC-TYPE SHOCK ABSORBER
    Publication number: 20220403904
    Abstract: A diaphragm holder for an oleo-pneumatic-type shock absorber includes a tubular body made of thermoplastic material, having a first end arranged to hold a diaphragm provided with flow restricting orifices and an opposite second end defining an arched bottom for withstanding pressure forces. Each of the two ends is provided with a localised mechanical reinforcement element forming an axial stop arranged to allow tensile stressing of the tubular body.
    Type: Application
    Filed: October 27, 2020
    Publication date: December 22, 2022
    Applicant: SAFRAN LANDING SYSTEMS
    Inventors: Sylvain LECLERCQ, Mathieu JOUBERT, Franck LECUYER, Quentin ROIRAND
  • AIRCRAFT BRAKING METHOD COMPRISING A DYNAMIC CORRECTION OF THE BRAKING COMMAND
    Publication number: 20220388637
    Abstract: Method for braking at least one wheel of an aircraft, the wheel being provided with a brake having at least one braking actuator, comprising the steps of: generating a braking command (Com) on the basis of a braking setpoint (Cf); estimating a wheel speed; applying a dynamic correction to the braking command, the dynamic correction being a function of the braking command and of the wheel speed (V(t)), the dynamic correction comprising the step of producing a corrected braking command (Ccorr) which is greater than the braking command when the wheel speed is greater than or equal to a predetermined speed threshold, and then the step of reducing the correct braking command when the wheel speed becomes less than the predetermined speed threshold, with the result that the corrected braking command becomes less than the braking command.
    Type: Application
    Filed: November 5, 2020
    Publication date: December 8, 2022
    Applicant: SAFRAN LANDING SYSTEMS
    Inventor: François BONIGEN
  • WHEEL COMPRISING AN INTERNAL INFLATION CHANNEL, LANDING GEAR AND AN AIRCRAFT COMPRISING SUCH A WHEEL
    Publication number: 20220388356
    Abstract: A vehicle wheel includes a rim having mounted thereon an inflation valve and a tire. The inflation valve is extended by an inflation channel extending through the rim and opening out into a volume of gas defined by the rim and the tire. The inflation valve is arranged in the vicinity of a flange of the rim.
    Type: Application
    Filed: December 10, 2020
    Publication date: December 8, 2022
    Applicant: SAFRAN LANDING SYSTEMS
    Inventors: Sylvain MOLINE, Yannick TARNOWSKI
  • ROLLER GEAR ELEMENT
    Publication number: 20220388636
    Abstract: A gear element includes a support (3) on which first rollers (10a) and second rollers (10b), which are intended for engaging with the teeth of a neighboring gear element (2), are alternately mounted. Each roller (10a, 10b) is mounted for rotation about its longitudinal axis (X?) via rotary guide means (20) cooperating with end portions of the rollers (10a, 10b). The rotary guide means (20) of the first rollers (10a) and the rotary guide means (20) of the second rollers (10b) are staggered in the vicinity of an outer periphery of the support (3).
    Type: Application
    Filed: November 6, 2020
    Publication date: December 8, 2022
    Applicant: SAFRAN LANDING SYSTEMS
    Inventor: Denis Bissieres
  • TREND MONITORING OF A SHOCK ABSORBER CONDITION
    Publication number: 20220388638
    Abstract: A method of monitoring the condition of an aircraft landing gear shock absorber, the shock absorber including at least one spring chamber containing a gas, the method comprising taking a plurality of measurements of the gas pressure and temperature, each gas pressure and temperature measurement pair being taken of at the same instant relative to an operating cycle of the shock absorber; calculating, based on each pair of gas pressure and temperature measurements, a first value; storing the first value in a log; determining a value trend based on the log; and in response to determining that the value trend is outside a first range of values, generating a first notification signal.
    Type: Application
    Filed: November 10, 2020
    Publication date: December 8, 2022
    Applicants: Safran Landing Systems UK LTD, Safran Landing Systems
    Inventors: Antoine Guidoux, Jon Smith, Jean-Yves Ravel, Yann Simmonneaux
  • Wheeled vehicle station docking using a kneeling landing gear system
    Patent number: 11518417
    Abstract: A method is disclosed for docking and undocking a hyperloop vehicle in a station. The method includes the step of extending a support system to a first position, wherein the support system engages a surface to support the hyperloop vehicle at a first elevation. The method further includes the steps of moving the hyperloop vehicle to a predetermined docking position and engaging a coupler to fixedly position the hyperloop vehicle relative to a docking platform.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: December 6, 2022
    Assignees: SAFRAN LANDING SYSTEMS, SAFRAN LANDING SYSTEMS CANADA INC.
    Inventors: Graeme Peter Arthur Klim, Andrew Michael Ellis, Justin Guang Yuang Cheng
  • METERING NEEDLE FOR OLEO-PNEUMATIC-TYPE SHOCK ABSORBER
    Publication number: 20220364627
    Abstract: A metering needle for an oleo-pneumatic-type shock absorber includes a base made of thermoplastic material, from which projects a rod arranged to control the flow of a hydraulic fluid through an orifice. The base has an arched bottom for withstanding pressure forces, in which is mounted an insert arranged to mechanically reinforce the arched bottom and distribute the pressure forces evenly.
    Type: Application
    Filed: October 27, 2020
    Publication date: November 17, 2022
    Applicant: SAFRAN LANDING SYSTEMS
    Inventors: Sylvain LECLERCQ, Mathieu JOUBERT, Franck LECUYER, Quentin ROIRAND
  • DIAPHRAGM HOLDER FOR AN OLEO-PNEUMATIC-TYPE SHOCK ABSORBER
    Publication number: 20220364626
    Abstract: A diaphragm holder for an oleo-pneumatic-type shock absorber includes a tubular body made of thermoplastic material, having one end arranged to hold a diaphragm and an opposite end defining an arched bottom for withstanding pressure forces. An insert is housed in the bottom of the tubular body and is arranged to mechanically reinforce the bottom and to distribute the pressure forces evenly.
    Type: Application
    Filed: October 27, 2020
    Publication date: November 17, 2022
    Applicant: SAFRAN LANDING SYSTEMS
    Inventors: Sylvain LECLERCQ, Franck LECUYER, Mathieu JOUBERT, Quentin ROIRAND
  • Brake assembly with drive capabilities for landing gear
    Patent number: 11498664
    Abstract: A landing gear system includes a wheel rotatably coupled to an axle about an axis. A torque tube is rotatably mounted to the axle about the axis such that the axle extends through a central portion of the torque tube. A rotor is fixed in rotation about the axis relative to the wheel, and a stator is fixed in rotation about the axis relative to the torque tube. The landing gear assembly further includes a clutch assembly selectively reciprocal between an engaged state and a disengaged state. The stator is fixed in rotation about the axis relative to the torque tube when the clutch assembly is in an engaged state. When the clutch assembly is in a disengaged state, the stator is rotatably about the axis relative to the torque tube.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: November 15, 2022
    Assignee: SAFRAN LANDING SYSTEMS CANADA INC.
    Inventor: Robert Kyle Schmidt
  • Clutch assembly for autonomous taxiing of aircraft
    Patent number: 11498663
    Abstract: A landing gear system includes an axle having an internal cavity and a wheel rotatably coupled to the axle. A drive shaft is mounted within the cavity to be rotatable about an axis. The landing gear system further includes a rod slidably mounted within the drive shaft and a clutch. The clutch has a first portion that is coupled to the rod and rotates with the drive shaft. A second portion of the clutch is fixedly coupled to the wheel. The rod selectively reciprocates along the axis between a first position and a second position to engage and disengage the clutch.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: November 15, 2022
    Assignee: SAFRAN LANDING SYSTEMS CANADA INC.
    Inventors: Robert Kyle Schmidt, Steve Amberg, Jason Brown
  • METHOD FOR CONTROLLING AN OPERATING CHARACTERISTIC OF A VEHICLE, SUCH AS THE GROUND CLEARANCE
    Publication number: 20220355918
    Abstract: The invention relates to a method for controlling an operating characteristic (for example ground clearance or acceleration) of a vehicle (100) resting on a contact surface (200) by means of at least one landing gear (150) comprising means of actuating (160) adapted to vary a behaviour of the landing gear when the latter is in contact with the contact surface, whereby the said method makes the operating characteristic of the vehicle dependent upon a given set-point by generating a command intended for the means of actuating as a function of a difference (?) between the operating characteristic and the set-point. According to the invention, the control system comprises the use of an estimation (Pest) of a load (P) seen by the landing gear to generate a modification of the command so as to minimise a variation in the deviation caused by a variation in the load.
    Type: Application
    Filed: July 6, 2020
    Publication date: November 10, 2022
    Applicant: SAFRAN LANDING SYSTEMS
    Inventors: Andrew ELLIS, Graeme KLIM