| MESSIER-BUGATTI-DOWTY Patent applications |
| Patent application number | Title | Published |
|---|
| 20120131778 | TOOL FOR REMOVING ANNULAR ELEMENTS TIGHTLY MOUNTED IN HOLES, IN PARTICULAR BLIND HOLES, OF PARTS - A removal tool which exerts an axial pull on an annular element including a tie rod with a widened end head adapted to be inserted in the coaxial passage of the annular element, beyond the annular element, and a mechanism for engaging with the element in a form of an annular cage with lateral prongs capable of deforming elastically in the radial direction, passing through the axial passage to engage via the elastic prongs thereof with the distal transverse surface of the element and to allow the element to be removed by the engagement of the widened head with the prongs, following the axial movement of the tie rod outside of the hole by a control mechanism. | 05-31-2012 |
| 20120131775 | METHOD OF MAKING A THREE-DIMENSIONAL FIBER PREFORM FOR FABRICATING AN ANNULAR PART OUT OF CARBON/CARBON COMPOSITE MATERIAL - A method of making a three-dimensional fiber preform for fabricating an annular part out of carbon-carbon composite material, the method including stacking layers of a fiber sheet made up of carbon yarns or tows, needling the layers one by one as they are superposed so as to bond them together, and locally modifying the electromagnetic properties of the fiber preform by increasing the fiber density of the layers of the fiber sheet that are situated at half-thickness of the fiber preform. | 05-31-2012 |
| 20120124838 | METHOD OF FABRICATING A METAL PART INCLUDING FIBROUS ANNULAR REINFORCEMENT - A method reinforcing an axisymmetric annular metal part by including a winding of composite material. A metal blank for the part is prepared, a cavity is formed therein that opens out into a coaxial inside face thereof, and that presents a right cross-section of axial extent that decreases from the inside towards the outside, a reinforcing yarn is wound in the cavity, the cavity is closed, the assembly is subjected to a hot isostatic compression process, and the blank is machined to obtain a final part. | 05-24-2012 |
| 20120112000 | NOSE GEAR OF AN AIRCRAFT COMPRISING A SINGLE CONTROL DEVICE FOR RETRACTION AND STEERING - A landing gear of an aircraft, including a strut including two arms forming a rotational axis for retracting the gear, a rotating tube mounted in a mobile manner such that it rotates inside the strut about a pivoting axis, a sliding rod that is mobile in a translatory manner in the rotating tube along the pivoting axis, and carries wheels of the gear at one of its ends, and at least one bearing point that is located on one of the elements of the gear at a distance from the retraction axis and can bear necessary efforts for the retraction, the bearing point being located on the rotating tube. | 05-10-2012 |
| 20120103502 | METHOD FOR MANUFACTURING A COMPOSITE MATERIAL CONNECTING ROD HAVING REINFORCED ENDS - In the field of aviation, a method of fabricating a composite-material rod. The method comprises a first step of fabricating a mandrel comprising a sleeve of composite material and solid inserts of composite material secured to the ends of said sleeve to constitute a rigid whole. Then, one or more layers of braided fibers are applied around the mandrel by using a fiber-braiding machine. Next, a resin is injected into the layers of braided fibers so as to establish cohesion rigidly bonding the braided fiber layers and at least the ends of the mandrel in order to form a rod body out of composite material having reinforced ends. Finally, respective holes are drilled at each end of the rod body, each hole passing through the layers of braided fibers and also through the corresponding insert. | 05-03-2012 |
| 20120097792 | HYDRAULIC CIRCUIT FOR ACTUATING AN UNDERCARRIAGE, AND METHODS OF DEPLOYING AND RAISING AN UNDERCARRIAGE USING SUCH A CIRCUIT - A hydraulic circuit for actuating an undercarriage, the circuit comprising: a feed line for feeding fluid and a return line; at least one door selector connected to the feed and return lines, the selector feeding door service lines, including an opening line and a closing line for opening and closing the doors; at least one undercarriage selector connected to the feed and return lines, feeding undercarriage service lines including a deployment line and a raising line for deploying and raising the undercarriage; and a door unhooking line and an undercarriage unhooking line. The door unhooking line is connected to at least one undercarriage service line while the undercarriage unhooking line is connected to at least one door service line, the circuit also including means for connecting the door service lines together during a door opening stage, and means for connecting the undercarriage service lines together during an undercarriage deployment stage. | 04-26-2012 |
| 20120097480 | DEVICE FOR REDUCING AERODYNAMIC NOISE FROM AN AIRCRAFT UNDERCARRIAGE - In the field of aviation, a device for limiting aerodynamic noise from a deployed aircraft undercarriage during landing and/or takeoff. The device comprises two end plates ( | 04-26-2012 |
| 20120091264 | SELECTIVE FORCE TRANSMISSION DEVICE AND AN UNDERCARRIAGE CONSISTING OF AN APPLICATION THEREOF - The invention relates to a device for selectively transmitting force, the device comprising a first element and a second element that is movably mounted on the first element, a friction member being arranged between the first element and the second element to exert a friction force between them, which force presents a maximum value that depends on prestress imparted by a presser member. The device includes control means for varying the prestress imparted by the presser member to the friction member and arranged, where appropriate, to substantially release the prestress imparted by the presser member so that the prestress becomes substantially zero. | 04-19-2012 |
| 20120080559 | METHOD FOR OPERATING A LANDING GEAR ASSEMBLY WITH A BREAKER STRUT - A method of operating an aircraft landing gear between a deployed position and a retracted position. The landing gear comprises a leg hinged to the aircraft, the leg being stabilized in the deployed position by a folding strut comprising two hinged-together links, the strut being held in an aligned position by a stabilizer member comprising two hinged-together links themselves held in alignment by a locking member. The method comprises the steps of arranging the strut ( | 04-05-2012 |
| 20120072057 | METHOD OF MANAGING MOVEMENT OF AN AIRCRAFT ON THE GROUND - The invention relates to a method of managing movement of an aircraft on the ground, the aircraft including at least one left main undercarriage and at least one right main undercarriage, each comprising wheels associated with torque application members for applying torque to the wheels in response to a general setpoint, the general setpoint comprising a longitudinal acceleration setpoint and an angular speed setpoint, the method including the successive steps of braking down the general setpoint into general torque setpoints for generating by the torque application members associated with each of the wheels. | 03-22-2012 |
| 20120046834 | METHOD OF CONTROLLING THE YAWING MOVEMENT OF AN AIRCRAFT RUNNING ALONG THE GROUND - The invention relates to a method of controlling a yawing movement of an aircraft running along the ground, the aircraft comprising at least one first landing gear with a steerable bottom part bearing wheels. According to the invention, the method comprises the steps of:
| 02-23-2012 |
| 20110315744 | METHOD FOR MAKING A METAL CONNECTING ROD REINFORCED WITH LONG FIBERS - The invention relates to a method of fabricating a connecting rod, the method including: fabricating a body ( | 12-29-2011 |
| 20110315495 | CONTROLLED-FRICTION SLIDING DEVICE, SUCH AS A DAMPER, WHICH CAN OPERATE IN TWO DIRECTIONS - The invention relates to a controlled-friction device comprising first and second elements ( | 12-29-2011 |
| 20110311171 | CONTROLLED-FRICTION LINEAR DEVICE IN WHICH A PRESS FORCE IS APPLIED PERPENDICULAR TO THE MOVEMENT - A controlled-friction device comprising a first element having a second element mounted thereon to slide in a sliding direction, and friction retaining means arranged to exert between the two elements an opposing force against relative movement of the two elements. The friction retaining means comprises a friction member mounted securely to the first element to rub against the second element via a friction surface extending parallel to the sliding direction, a presser member for exerting a thrust force on the friction member, urging the friction member against the second element in a direction normal to the relative movement of the elements, and a link means linking the friction member to the first element causing the friction member to separate from the second element during movement in either direction of the second element relative to the first element. | 12-22-2011 |
| 20110308906 | MECHANICAL DEVICE FOR THE TRANSMISSION OF A FORCE WITH A THRESHOLD - The invention relates to a mechanical transmission device for transmitting a threshold force, the device comprising a first element ( | 12-22-2011 |
| 20110304292 | INDEPENDENT DRIVE DEVICE FOR AN AIRCRAFT - The invention relates to an independent drive device for an aircraft, the drive device comprising a motor member, drive means for driving an aircraft wheel in rotation, which means are adapted to co-operate with said wheel to drive it in rotation, and coupling means interposed between the motor member and the drive means to selectively couple the wheel to the motor member, the coupling means comprising two coupling members of complementary shape, comprising a first coupling member constrained to rotate with the drive means and a second coupling member constrained to rotate with the motor member. The independent drive device includes measurement means for generating information representative of a relative speed of rotation of the second coupling member relative to the first coupling member, the device being associated with motor control means adapted to cause the motor to rotate so as to cancel the relative speed of rotation between the coupling members prior to coupling them together. | 12-15-2011 |
| 20110303785 | AIRCRAFT FITTED WITH AN INDEPENDENT DRIVE DEVICE - The invention relates to an aircraft having wheels fitted with hydraulically-actuating friction brake means and also hydraulically-actuated independent drive means for driving the wheels in rotation and enabling the aircraft to move in stages of independent drive in which the engines of the aircraft are inactive, wherein the aircraft is fitted simultaneously with a main hydraulic circuit including a pressure source that powers the brake means when said pressure source is active; with an alternative braking circuit for enabling brake means to be actuated at least when the engines of the aircraft are stopped, the alternative braking circuit including an accumulator that is normally used for parking braking and that is kept under pressure by the pressure source of the main circuit when said pressure source is active; and with an auxiliary hydraulic circuit pressurized by auxiliary pump means activated by an auxiliary power unit of the aircraft to enable the independent drive means to be actuated; the auxiliary hydraulic circuit being connected to the alternative braking circuit to maintain an operating pressure in the accumulator of the alternative braking circuit. | 12-15-2011 |
| 20110297262 | HYDRAULIC VALVE - The invention relates to a hydraulic valve comprising a body in which a bore is formed in order to receive a sleeve that includes sealing seats that cooperate with a wall of the bore to define hydraulically isolated chambers that are connected to hydraulic ports in the body, the sleeve including connection holes in order to connect at least certain chambers with the inside of the sleeve and receiving a movable element that is slidable between two end positions in order to slide in leaktight manner against an inside wall of the sleeve, wherein the sleeve includes at least one regulator hole that opens out inside the sleeve in such a manner as to be the first bore to be uncovered or the last bore to be blocked by one of the fitted portions of the movable element when said element slides from one position to another, said fitted portion having at least one face portion that presents a setback that passes over the regulator hole. | 12-08-2011 |
