Patents Assigned to Messier-Bugatti-Dowty
  • METHOD FOR ROTATIONALLY DRIVING AN AIRCRAFT WHEEL
    Publication number: 20160039518
    Abstract: The invention relates to a method for rotationally driving an aircraft wheel, the wheel being equipped with a rim comprising two half-rims assembled by bolts (5), in which method a drive member for generating a torque for driving the wheel is controlled, characterized in that the method comprises the transfer of the drive torque to the wheel via the rim assembly bolts.
    Type: Application
    Filed: August 4, 2015
    Publication date: February 11, 2016
    Applicant: MESSIER-BUGATTI-DOWTY
    Inventors: Sylvain JABER, Raffi CEKIC
  • Anti-lofting deflector for aircraft landing gear
    Patent number: 9254912
    Abstract: An anti-lofting deflector for landing gear having two wheels on an axle. The deflector comprises a stationary support (5) for being fastened in service to a portion of the landing gear that carries the axle in order to extend between the wheels and present a distal end behind the wheels. It also has a first flap (2) hinged to the support via its distal end about a first hinge axis (X1) substantially parallel to the axle and a second flap (3) hinged to the first flap about a second hinge axis (X2) substantially parallel to the first hinge axis. Finally, there is a a return member (11) arranged so as to urge the second flap against an abutment of the first flap that prevents the second flap from becoming aligned with the first flap, and to urge the first flap against an abutment of the stationary support that prevents the first flap from folding against the support.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: February 9, 2016
    Assignee: MESSIER-BUGATTI-DOWTY
    Inventor: Dominique Ducos
  • PROCESS FOR FABRICATING AN AIRCRAFT PART COMPRISING A SUBSTRATE AND A SUBSTRATE COATING LAYER
    Publication number: 20160032440
    Abstract: A method of fabricating a part (1) comprising a metal substrate (Sub) at least partially covered in a coating layer (Rev). The method comprises: preparing (A) a surface of the substrate (Sub) to obtain a prepared surface of roughness Ra lying in the range 0.6 ?m to 1.6 ?m, and; forming (C) the coating layer (Rev) on the prepared surface of the substrate, this coating layer (Rev) being formed by spraying, using an HVOF type spraying method to spray a powder mixture containing grains (G) of metal carbide, the grains (G) having dimensions that are strictly less than 1 ?m and the thickness (Epmin) of the coating layer (Rev) as formed in this way being less than 50 ?m; then finishing at least one surface of said coating layer (Rev) by polishing (D) in such a manner as to ensure that its roughness Ra is less than 1.6 ?m.
    Type: Application
    Filed: February 13, 2014
    Publication date: February 4, 2016
    Applicant: MESSIER-BUGATTI-DOWTY
    Inventors: Francis MONERIE-MOULIN, Regis GAYDU
  • METHOD OF RESTORING A WHEEL TO COMPLIANCE AND TOOLING FOR PERFORMING THE METHOD
    Publication number: 20160023310
    Abstract: A method of restoring a wheel (1) to compliance, the wheel having a plurality of ovalized bores (2). The method is characterized in that it includes at least a step of boring a first ovalized bore (2) with the help of a reamer (3) presenting a longitudinal pilot portion (3a) and a longitudinal cutter portion (3b), the cutter portion (3b) presenting teeth (4) defining a cutting diameter (D2), and the pilot portion (3a) presenting a pilot diameter (D1) strictly less than the cutting diameter (D2), the step of boring this first ovalized bore (2) consisting in inserting the reamer (3) into the first ovalized bore (2), beginning with the pilot portion (3a) and followed by the cutter portion (3b), the pilot diameter (D1) being such that it enables the reamer (3) to be guided in translation inside the first ovalized bore (2) for boring.
    Type: Application
    Filed: July 20, 2015
    Publication date: January 28, 2016
    Applicant: MESSIER-BUGATTI-DOWTY
    Inventor: Clement SCHOENBOCK
  • METHOD OF PREPARING A METAL ALLOY PART
    Publication number: 20160024631
    Abstract: A method of converting an alloy comprising a majority of titanium, the method comprising: a step of fabricating an ingot (1); steps of a first type (A, B, C) of plastically deforming the alloy at a temperature higher than the ? transus temperature T?; steps of a second type (A?, B?) of plastically deforming the alloy at a temperature lower than the ? transus temperature T?. These step of the first and second types (A, A?, B, B?, C) are performed in the following sequence: a first step of the first type (A) at a first temperature T1; a first step of the second type (A?); a second step of the first type (B) at a second temperature T2 lower than T1; a second step of the second type (B?); and a third step of the first type (C) at a third temperature T3 lower than T2.
    Type: Application
    Filed: July 22, 2015
    Publication date: January 28, 2016
    Applicant: MESSIER-BUGATTI-DOWTY
    Inventor: Francis SONIAK
  • Method for powering autonomous drive motors for an aircraft
    Patent number: 9242726
    Abstract: A method for powering an autonomous drive device (4) in an aircraft comprising a certain number of drive motors (5) for the wheels (6) when the jet engines of the aircraft are not activated, the aircraft comprising an auxiliary power unit or APU (2) driving a first generator (1) for supplying power to devices on the aircraft that need to be powered when the jet engines are not activated. The method comprises the use of a second generator (8) dedicated to the power supply of the autonomous drive device, the second generator being disposed in parallel with the first generator so as to be driven by the APU and, when it operates as a motor under the action of power recovered by the autonomous drive device, so as to help the APU drive at least the first generator.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: January 26, 2016
    Assignee: MESSIER-BUGATTI-DOWTY
    Inventors: Jean-Pierre Garcia, Florent Nierlich, Olivier Gosselin
  • AIRCRAFT LANDING GEAR PROVIDED WITH AN ADJUSTABLE ROLLER
    Publication number: 20160016657
    Abstract: The invention relates to an aircraft undercarriage intended to be mounted so as to be able to move on the aircraft between a deployed position and a retracted position, the undercarriage comprising a roller (1) carried by a support (4) secured to the undercarriage while being able to be moved with respect thereto, characterised in that the support is mounted pivotally on the undercarriage.
    Type: Application
    Filed: March 12, 2014
    Publication date: January 21, 2016
    Applicant: MESSIER-BUGATTI-DOWTY
    Inventors: Domenico LA COMMARA, Thibault FAURE
  • METHOD OF DETECTING A LEAK PAST A DYNAMIC SEAL IN AIRCRAFT LANDING GEAR
    Publication number: 20160009423
    Abstract: A leak detection method for detecting a leak past a dynamic seal in aircraft landing gear (100) comprising: a strut (10); a rod (20) slidably mounted in the strut; and a bearing (70) fitted to an end (11) of the strut to guide the rod (20). The bearing includes a bushing (50) having a seal (62) arranged to rub against the rod (20) to provide sealing between the strut and the rod, defines a fluid chamber (2), and a stop nut (40) for preventing the bushing from moving relative to the strut. The method includes a step of installing a test nut (3) without a wiper seal in the place of the stop nut (40), the step of putting the hydraulic fluid in the landing gear under pressure, and the step of verifying the existence of a leak of hydraulic fluid on the outside surface (22) of the rod (20).
    Type: Application
    Filed: July 1, 2015
    Publication date: January 14, 2016
    Applicant: MESSIER-BUGATTI-DOWTY
    Inventor: Graeme STEEL
  • METHOD FOR MANAGING AN ELECTRIC MOTOR
    Publication number: 20150375855
    Abstract: The invention relates to a method for managing an electric motor (6) intended to drive rotationally a wheel (4) of an aircraft (1), the method comprising the step of short-circuiting the phases of the electric motor (6) when the aircraft (1) is in a period of deactivation of the motor (6) during which it is envisaged not using the electric motor (6).
    Type: Application
    Filed: June 23, 2015
    Publication date: December 31, 2015
    Applicant: MESSIER-BUGATTI-DOWTY
    Inventors: Sylvain JABER, Raffi CEKIC
  • Device for connecting a gearmotor to an aircraft wheel in order to enable the wheel to be driven selectively by the gearmotor
    Patent number: 9221534
    Abstract: A device for connecting a gearmotor to an aircraft wheel, the device comprising: a casing rotatably carrying a shaft that is to be driven by the gearmotor, and on which a pinion is mounted idle by means of a rolling bearing; a toothed ring for being constrained in rotation with the aircraft wheel and arranged to mesh permanently with the idle pinion; and rotation securing structure for selectively constraining the idle pinion in rotation with the shaft. A bushing is interposed between the shaft and the rolling bearing of the idle pinion.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: December 29, 2015
    Assignee: MESSIER-BUGATTI-DOWTY
    Inventor: Daniel Bucheton
  • Coupling device between two rotary elements
    Patent number: 9222522
    Abstract: A device for coupling together two elements mounted to rotate about a common axis of rotation (X) in order to enable one of the elements to be selectively driven in rotation by the other. There are two members (3, 4), one per element, the elements being axially movable relative to each other between a remote decoupled position and an engaged position in which the members provide a rotary connection between the two elements. One of the members forms a plate (3) having a face (P) perpendicular to the axis of rotation and in which a plurality of housings (15) are formed. The other one of the elements carrying rollers (23) that are mounted to rotate about radial axes to project from said element so that each of them can penetrate into any one of the housings and provide a rotary connection between the two members.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: December 29, 2015
    Assignee: MESSIER-BUGATTI-DOWTY
    Inventor: Gilles Eluard
  • AIRCRAFT WHEEL EQUIPPED WITH MEANS FOR THE ROTATIONAL DRIVING THEREOF BY A DRIVE ACTUATOR
    Publication number: 20150360772
    Abstract: The invention relates to an aircraft wheel having a rim comprising brake discs driving keys (21), the wheel being provided with rotational driving means (210) which comprise a drive gear (211) associated with coupling members (212) of the drive gear to the rim of the wheel, the wheel being characterized in that the coupling members are fixed to the rim by fixing members (220) introduced into orifices of the rim extending at an end of the keys which are also used to hold heat shields protecting the rim.
    Type: Application
    Filed: June 9, 2015
    Publication date: December 17, 2015
    Applicant: MESSIER-BUGATTI-DOWTY
    Inventors: Nicolas MAZARGUIL, Sébastien REMOND
  • Aircraft wheel with a universal drive dog
    Patent number: 9211949
    Abstract: An aircraft wheel comprising a rim adapted to receive a tire, and a hub connected to the rim (2) in order to receive bearings for guiding the wheel in rotation about an axis of rotation (X) on an axle of the aircraft. The wheel includes at least one dog (10) that projects laterally from the rim in order to present two parallel faces (11). The dog is pierced by an orifice (12) extending from one face to the other along a generally orthoradial direction (Y).
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: December 15, 2015
    Assignee: MESSIER-BUGATTI-DOWTY
    Inventors: Mirca Barbu, Sébastien Remond
  • METHOD FOR MANAGING THE BRAKING OF AN AIRCRAFT WHEEL
    Publication number: 20150353190
    Abstract: Method for managing the braking of a wheel (4) of an aircraft (1) fitted with a brake (11), the aircraft comprising brake control means suited to implementing an anti-skid function of the wheel (4), requiring an estimate of a rotational speed of the wheel, the aircraft further comprising means of driving the wheel including an electric motor (6) intended to drive the wheel (4) in rotation, the said electric motor (6) being fitted with a position sensor (8) intended to provide measurements of the angular position of a rotor of the motor (6). The method comprises the step, for implementing the anti-skid function, of estimating the rotational speed of the wheel (4) from measurements of the angular position of the rotor which are supplied by the position sensor (8).
    Type: Application
    Filed: May 27, 2015
    Publication date: December 10, 2015
    Applicant: MESSIER-BUGATTI-DOWTY
    Inventors: Sylvain JABER, Raffi CEKIC
  • FUSIBLE MEMBER INTENDED TO JOIN TWO YOKES TO FORM A HINGE
    Publication number: 20150345545
    Abstract: The invention relates to a tubular fusible member (21) extending along a longitudinal axis (AL) and for engaging in a two-lug clevis (14) and a single-lug clevis (12) in order to form a hinge (11). According to the invention, the fusible member (21) is constrained in rotation with one of the clevises (12, 14), and it presents a cross-section of shape that varies gradually between a central section and two distal sections, each distal section having reinforced thickness in its regions that extend parallel to the bending plane (PF) in which the fusible member (21) bends when it is stressed, the central section having a second moment of area relative to an axis normal to the bending plane (PF) that is greater than the second moment of area of the distal sections.
    Type: Application
    Filed: January 10, 2014
    Publication date: December 3, 2015
    Applicant: MESSIER-BUGATTI-DOWTY
    Inventor: Nicolas ANTONI
  • DISC BRAKE FOR AN AIRCRAFT WHEEL
    Publication number: 20150337915
    Abstract: The invention relates to a disc brake for an aircraft wheel, comprising friction discs (20,30), including rotor discs and stator discs, a structure comprising a torsion tube (11) on which the discs are fitted, a rear plate (12) which is located at one end of the tube, and a support (13) for braking actuators (14,15) at another end of the tube, the actuators being able to be selectively activated in order to apply a pressing force to the discs. According to the invention, the discs are separated into two groups, including a first group (20) which can be used alone for taxiing braking operations, and a second group (30) which can be used alone or in conjunction with the first group for take-off/landing braking operations.
    Type: Application
    Filed: April 21, 2015
    Publication date: November 26, 2015
    Applicant: MESSIER-BUGATTI-DOWTY
    Inventors: Pierre CHAMBARD, Come DORGE, Richard MASSON, Jean-Baptiste VANEY
  • Aircraft wheel fitted with drivekey-bolts
    Patent number: 9193448
    Abstract: An aircraft wheel comprising two half-wheels (1, 2) assembled together by means of bolt fasteners (10; 110) clamping together disks of the half-wheels, each bolt fastener comprising a bolt (11; 111) with an end forming a screw head (12; 112) and a threaded end (13; 113) for receiving a nut (14; 114), the wheel also being fitted with drive keys (20; 120) that are fitted to one of the half-wheels for driving brake disks in rotation, the wheel being characterized in that each drive key has a first end (23; 123) that is shaped to co-operate with the screw head of one of the bolts so that said first end is held and prevented from moving when the key is in place on the wheel.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: November 24, 2015
    Assignee: MESSIER-BUGATTI-DOWTY
    Inventors: Marie-Laure De Crescenzo, Christophe Verdurmen, Jacques Bussiere
  • Module for converting voltage between a high-voltage electrical network of an aircraft and an energy storage element
    Patent number: 9197088
    Abstract: A module converting voltage between a high-voltage electrical network and at least one energy storage element an aircraft, the conversion module configured to reversibly convert between a DC voltage of the high-voltage electrical network and a DC voltage of the energy storage element, the DC voltage of the energy storage element floating relative to the DC voltage of the high-voltage electrical network and centered relative to the mass of the aircraft, the module including an input module including two filters each capable of receiving a DC voltage, a first arm and a second arm including switches, and a mechanism controlling the switches, operating per cycle of a switching period and capable of controlling at least one first switch and at least one second switch identically but offset by a half-period, whereby the first switch is open when the second switch is closed and vice versa.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: November 24, 2015
    Assignees: LABINAL POWER SYSTEMS, SAGEM DEFENSE SECURITE, MESSIER-BUGATTI-DOWTY
    Inventors: Sébastien Vieillard, Laurent Bernard Brosson, Charif Karimi, Marc Henri Yves Pontrucher
  • Control box
    Patent number: 9193434
    Abstract: A control box for selectively delivering orders to receivers (8, 12). The control box comprises a shaft (14) mounted to turn about an axis of rotation (X), while being capable of sliding along the axis (X) between a rest position towards which it is urged by return means (24), and an active position. An order delivery apparatus (16, 11) co-operates with the shaft (14) to deliver orders as a function of the angular position of the shaft (14). A rotary drive (15) causes the shaft to turn. A safety actuator (23) causes the shaft to slide from the rest position in which anti-rotation structure (27, 28) prevents the shaft from turning to the active position in which the anti-rotation structure (27, 28) leave the shaft free to turn under drive from the rotary drive (15).
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: November 24, 2015
    Assignee: MESSIER-BUGATTI-DOWTY
    Inventor: Gilbert Lecourtier
  • Device and method for spreading a cable of carbon fibers or carbon yarns
    Patent number: 9187861
    Abstract: A device for spreading a cable of carbon fibers or carbon yarns, includes a disk mounted on a rotary shaft and provided with at least one comb adapted to comb a cable of carbon fibers or carbon yarns in a direction substantially parallel to the longitudinal direction of the fibers or yarns of the cable. The comb includes a plurality of teeth protruding radially toward the outside of the disk, and a device for rotating the disk around its rotary axis. Furthermore, a method for spreading a cable of carbon fibers or carbon yarns, includes at least making the teeth of the comb of the device flush with the cable in a direction substantially parallel to the longitudinal direction of the fibers or yarns of the cable.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: November 17, 2015
    Assignee: MESSIER-BUGATTI-DOWTY
    Inventor: Laurent Dominguez