Abstract: In some examples, an assembly includes a rotor drive key configured to be positioned over a wheel boss defined by a wheel. A drive key body defines a trough configured to receive the wheel boss. An inner surface of the drive key body is configured to establish a conforming contact with an outer profile of the wheel boss and oppose relative motion of the rotor drive key in a radial direction of the wheel. The rotor drive key includes a tab having a tab aperture configured to receive a fastener extending in an axial direction of the wheel and engaging the wheel boss.

Abstract: A method of making a brake assembly. The method may include providing a brake pad carrier, an air operated brake actuator suitable for attaching to the brake pad carrier, and a hydraulically operated brake actuator suitable for attaching to the brake pad carrier, and attaching one of the air operated brake actuator and hydraulically operated brake actuator to the brake pad carrier to provide a brake assembly.

Abstract: An impeller for a planet carrier of a epicyclic speed reduction gear of a turbine engine is fixed in rotation to the planet carrier and is rotatable about an axis of the reduction gear. The impeller has an annular shape about the axis and includes means for lubricating in particular planet gear bearings of the reduction gear. The lubricating means include an annular cavity located at the inner periphery of the impeller, wherein the impeller has an inner peripheral wall that closes the cavity in the radial direction. The impeller further includes an annular aperture that extends around the axis and opens in the axial direction into the cavity to supply lubricating oil thereto.

Abstract: A brake stack is disclosed. The brake stack comprises a first stator, a second stator, and a first rotor disposed between the first stator and the second stator. The brake stack further comprises a first spring disposed between the first stator and the second stator. The first spring is disposed radially inward of the first rotor. The first spring is disposed axially between the first stator and the second stator. The first spring is configured to partially compress when a force applied to a pressure plate of the brake stack is less than a threshold force.

Abstract: An antivibration centering ring for centering a foot of the torque tube of an aircraft brake on an axle of the aircraft includes alternating bearing zones that are arranged to bear in alternation on the axle and on the torque tube foot. The bearing zones are offset on their non-bearing sides by functional clearance so that no bearing zone bears simultaneously on the axle and on the foot of the torque tube. The bearing zones are connected to one another by flexible ligaments.

Abstract: A hybrid torque bar for a brake assembly may comprise a base portion, a pin extending from a first end of the base portion, and a rail extending between the first end of the base portion and a second end of the base portion opposite the first end. The base portion may be formed using a first manufacturing process. At least one of the pin or the rail may formed using a second manufacturing process. The second manufacturing process may comprise an additive manufacturing technique.

Abstract: A braking system for aircraft landing gear including a plurality of clamping zones for clamping a brake disk. The braking system comprises an actuator, a caliper, a rim rotatable about an axis of rotation, and the brake disk, which is floatingly mounted relative to the rim. The caliper comprises a stationary inner support, a movable intermediate support, and an outer support that is hinged relative to the inner support. Under action of the actuator, the movable intermediate support moves and causes the brake disk to move so that the brake disk is clamped between the intermediate support and the outer support, and then causes the outer support to tilt so that the brake disk is clamped between the inner support and the outer support.

Abstract: An aircraft landing gear assembly including a structural load bearing beam arranged, in use, to react torsional loads applied to it. The beam has a tubular box section main body having four straight sidewall portions, adjacent sidewall portions being orthogonal to one another and connected by rounded corner portions. Each corner portion has a radius of between 10% and 40% of the width and/or height of the tubular box section main body.

Abstract: A friction disk of a braking system may include a friction disk core and a first wear liner. The friction disk core has an outer surface that defines a recess extending gradually inward from the outer surface, according to various embodiments. The wear liner mates to the outer surface of the friction disk core and includes a wear surface and a first non-wear surface, according to various embodiments. The first wear liner further includes a notch extending gradually outward from the first non-wear surface of the wear liner, according to various embodiments. In an installed state, the notch is received within the recess, according to various embodiments.

Abstract: An electronic braking arrangement includes a brake stack assembly, a driver circuit, a current limiter circuit, and a voltage limiter circuit. The driver circuit is operably connected to the brake stack assembly. The current limiter circuit and the voltage limiter circuit are connected in series between the driver circuit and the brake stack assembly to drive friction brake loads in the brake stack assembly with a voltage limited constant drive current.

Abstract: A wet parking brake device includes a shaft case, a rotary shaft, a plurality of stators, a plurality of brake discs, a piston plate, and a pressing mechanism. The wet parking brake is configured such that the brake discs and the stators come in contact with each other by a pressing from the piston plate pressed by the pressing mechanism to thereby generate a braking force against the rotary shaft. The pressing mechanism includes a parking rod that is turnably supported in the shaft case and has a turning axis in the vertical direction and an arm member that is connected to the parking rod and turns around the turning axis. The parking rod includes a rod main body, an upper shaft portion and a lower shaft portion.

Abstract: An aircraft landing gear comprising at least an axle carried in the bottom portion of the landing gear, a wheel provided with a rim mounted on the axle of the landing gear via bearings in order to rotate about an axis of rotation, a brake threaded on the axle and including a torque tube extending around the axle, friction members mounted around the torque tube and extending between the torque tube and the rim of the wheel, and at least one brake actuator designed for selectively exerting a braking force on the friction members, the brake actuator being carried by an actuator carrier to which the torque tube is secured, and a rotary drive for driving the wheel in rotation comprising firstly an actuator for driving the wheel in rotation and secondly a transmission member for selectively transmitting movement in rotation from the rotation actuator to the rim of the wheel and extending between the axle and the torque tube.

Abstract: A multiplate clutch or brake has a plate carrying device (2) having a plate carrier (4). The plate carrier (4) has a tubular section (24). The plate carrying device (2) also has a supporting ring (6), which surrounds the tubular section (24) and on which the tubular section (24) can be supported or is supported outwardly in a radial direction (12). A cross section of the supporting ring (6) has at least one radial leg (30; 38) extending substantially in a radial direction (12, 14).

Abstract: Disclosed herein is a yaw brake system including a multi-disk member disposed in an upper portion of a tower frame of wind generator and including at least two disks, and a braking member disposed in a lower end of a nacelle frame of the wind generator, and provided to brake yawing of a nacelle by interlocking with the multi-disk member. In accordance with the disclosure, it is possible to prepare for buildup of equipment, such as a blade, a hub, or a nacelle, depending on an increase in power of wind power generation, and at the same time to more effectively brake yawing of the nacelle due to a rapid change in wind direction while overcoming a limited space in the nacelle.

Abstract: A wet brake includes a housing, non-rotatable brake discs, rotatable brake discs, a parking lever, a piston, a plate, and a connector. The non-rotatable and the rotatable brake discs are disposed in engagement with the housing and an outer peripheral surface of a rotary shaft, respectively. The piston, the plate, and the rotary shaft are accommodated in the housing. The piston is configured to be pushed by the parking lever toward the non-rotatable and the rotatable brake discs. The plate is in contact with one of the non-rotatable brake discs or one of the rotatable brake discs. The connector is disposed at a position between the piston and the plate. The housing has a recess that is formed in an outer peripheral surface of the housing at a position corresponding to the position of the connector. An outer diameter of the connector is smaller than that of the piston.

Abstract: Provided is an automatic transmission including: an input section to which power generated by a drive source is input; an output section configured to output a drive force; and a gear shifting mechanism configured to change a gear ratio. The power is input to the input section without intervention of a hydraulic power transmission device. The gear shifting mechanism includes a predetermined frictional engagement element for achieving a starting gear ratio of a vehicle. The frictional engagement element includes: a plurality of friction plates arranged with clearances therebetween; a piston movable between a releasing position where the friction plates are brought into a released state, and an engaging position where the friction plates are brought into an engaged state by pressing the friction plates; and an urging mechanism configured to urge the piston so that the piston abuts against the friction plates and the clearances are reduced.

Abstract: A multiple-piece backing plate and a friction clutch assembly for an automotive transmission are provided. The multiple-piece backing plate includes a cap part and a main body backing plate. The cap part is formed of a first material. The main body backing plate is attached to the cap part, and the main body backing plate is formed of a second material, where the second material is different than the first material. The friction clutch assembly includes first clutch plates coupled to a first transmission member and second clutch plates interleaved with the first clutch plates and coupled to a second transmission member. The friction clutch assembly is configured to be moved between an engaged position and a disengaged position. In the engaged position, the first and second transmission members are coupled together by compressing the first and second clutch plates directly against the cap part.

Abstract: A wet friction engagement element including a drum having a cylindrical drum portion; a hub having a cylindrical hub portion; an annular friction plate fitted in an inner periphery of the drum portion and having a friction material bonded to its surface; and an annular separator plate fitted on an outer periphery of the hub portion and capable of frictionally engaging with the friction plate.

Abstract: A brake stack comprises a stator having an annular, inner periphery section disposed substantially along a first radial plane extending normal to an axis of a wheel, and a stator side wall having a first stator contact surface, the first stator contact surface including a sloped portion which deviates away from the radial plane defined by the annular, inner periphery section. The brake stack further comprises a rotor having an annular, outer periphery section disposed substantially along a second radial plane extending normal to the axis of the wheel, and a rotor side wall having a first rotor contact surface shaped complementary to the first stator contact surface, wherein the stator and the rotor are interleaved. A brake disk may comprise a first radius of a friction surface at a first axial position and a second radius of the friction surface at a second axial position, where the first radius is different than the second radius.

Abstract: A drive axle assembly for a heavy goods vehicle includes a hollow hub, a wheel body rotatably mounted to the hollow hub, and a planetary gear including first and second planetary gear stages, each having a sun gear, a ring gear and a planet carrier with planetary wheels mounted rotatably in the planetary carrier and meshing with the sun gear and the ring gear. A drive shaft is axially guided through the hollow hub and the sun gear of the second planetary gear stage, with the sun gear of the first planetary gear stage being non-rotatably mounted on a vehicle-distal outer end of the drive shaft. Non-rotatably connected by a screw and pin connection to the hollow hub is an annular disk which has an axial opening and a plurality of boreholes in radially surrounding relationship to the axial opening.

Abstract: Systems and methods disclosed herein may be useful for use in a wheel assembly which includes a heat shield. In this regard heat shield for a wheel may include a first member; a second member positioned radially of the first member defining an annular cavity between the first member and the second member; an opening in at least one of the first member and the second member configured to provide fluidic communication between the annular cavity and an outside of the annular cavity; and a mounting feature in operable communication with the first member and the second member configured to attach the heat shield to the wheel.

Abstract: An undercarriage having a wheel mounted on an axle (3), a brake and a drive assembly. The brake comprises a torsion tube (9), friction members (11) mounted around the torsion tube, and at least one brake actuator (13) for selectively exerting a braking force on the friction members. The drive assembly is operative to drive rotation of the wheel and comprises an electric motor (14) that is connected to a rim (5) of the wheel (4) by a coupler member (15). The coupler member extends at least in part around the axle (3) between the axle and the torsion tube (9) of the brake.

Abstract: A lockable disc brake swivel for use in a drill string is comprised of a tubular swivel housing having a rotatably mounted swivel stem. A disc brake housing is mounted to the swivel housing to encase a radially extending brake disc engaged for rotation with the swivel stem. The disc brake housing also has a disc brake surface that may be selectively engaged with the brake disc to allow or prevent rotation of the swivel stem. The brake piston may be hydraulically or pneumatically activated.

Abstract: A system and method for improving engine emissions is described. In one example, engine emissions may be improved via increasing rotational resistance of a turbocharger while a temperature of an exhaust after treatment device is less than a threshold temperature. The system and method may reduce an amount of time for the after treatment device to reach an operating temperature.

Abstract: Disclosed is a disk damping core for a disk brake assembly comprising at least two disk leaves comprising mating sloped contact surfaces configured to provide additional energy damping.

Abstract: A braking system may include a plurality of independently activatable groups of brake actuators, which may allow the braking force applied to a brake disc stack to be modified, e.g., in response a type of braking event. In some examples, a braking system comprises a brake assembly that includes a brake stack and a plurality of brake actuators. Each brake actuator may be configured to compress the brake stack when the brake actuator is activated. The braking system may further comprise a processor configured to detect a first type of braking event and, in response, activate a first number of brake actuators to compress the brake stack. The processor may further be configured to detect a second type of braking event and, in response, activate a second number of brake actuators to compress the brake stack, the first number being less than the second number.

Abstract: The present disclosure provides systems and methods for stiction tolerant brake force estimation. In various embodiments, a method for stiction tolerant brake force estimation may comprise receiving, by a controller, a first motor state at a first time, calculating, by the controller, a first uncompensated brake force estimate based upon the first motor state, calculating, by the controller, a first linear speed based upon the first motor state, and calculating, by the controller, a first stiction compensated brake force estimate based upon at least one of the first linear speed and the first uncompensated brake force estimate.

Abstract: A cooling-fan control device for a vehicle that increases the cooling capacity of a cooling oil that cools a brake rapidly and inhibits a brake damage in a case where the brake is applied during traveling or, in addition to the above-described problem-to-be-resolved, suppresses engine horsepower consumption and avoids consumption increase, while increasing the cooling capacity of the brake cooling oil. The rotation speed of the cooling fan is controlled to obtain the higher target rotation speed of a first target rotation speed corresponding to a detected cooling oil temperature and a second target rotation speed corresponding to a detected brake operation amount. The present invention is applicable to a vehicle in which an engine power is distributed to a travel power train and a hydraulic pump, drive wheels are operated via the travel power train, and the cooling fan is actuated via the hydraulic pump.

Abstract: A transaxle includes an input shaft, a brake, an output shaft, a mechanical transmission, a transaxle casing, and a spacing system. The brake is provided on the input shaft. The brake includes layered friction elements. The transmission transmits power from the input shaft to the output shaft. The transaxle casing includes a housing defining both a brake chamber and a transmission chamber. The brake chamber incorporates the brake. The transmission chamber incorporates the transmission. The spacing system is configured so as to provide the transaxle casing with a partition wall between the brake chamber and the transmission chamber, so as to hold a bearing in the partition wall to journal the input shaft, and so as to provide a spacer for the layered friction elements of the brake, the spacer defining a space in the axial direction of the input shaft in correspondence to a thickness of the layered friction elements in the axial direction of the input shaft.

Abstract: In a driveline in a front wheel drive vehicle the distribution of drive torque to the drive wheels (1) via a differential (6) is controlled by means of a differential brake with a hydraulically controlled limited slip clutch (7). A low preparatory hydraulic pressure is applied to the clutch at the occurrence of any one of certain predetermined driving situations for decreasing the response time for the clutch.

Abstract: A wet-running multi-disc brake includes stator discs, which are arranged in parallel to and at a distance from each other in a rotationally fixed manner, and a rotatable rotor disc positioned in each case between the stator discs. The radially extending stator discs and rotor discs can be pressed against one another during braking by way of a brake application device while overcoming a clearance. The wet-running multi-disc brake is designed such that the brake application device can be mechanically actuated and, via an actuating unit, engages a self-energizing device, which includes a pressure ring that can be pressed towards the rotor discs during braking independently from the rotational direction of the rotor discs.

Abstract: A method for the reconditioning and use of brake discs of the rear stator type with studs. The method includes the steps of using a first disc (12) during a first life, using a second disc (112) during a first life, after the first life of the first disc and the first life of the second disc, machining a friction surface on one of the discs and a rear surface on the other of the discs so that one of the surfaces has at least one shoulder (17) and the other of the surfaces has at least one notch (118). Finally, the first disc is nested in the second disc such that the notch and the shoulder cooperate so as to center the discs.

Abstract: A liquid cooled brake is provided having an improved housing that provides strong yet lightweight structural support. The brake includes end plates disposed about a driven shaft and axially spaced from one another. A plurality of axially extending pins connect the end plates. A friction plate is coupled to the driven shaft for rotation therewith and is axially movable relative to the driven shaft. Another friction plate defines a fluid jacket and is coupled to the pins. The friction plate is fixed against rotation, but axially movable, relative to the pins. A pressure plate is configured for selective movement towards the friction plates. Support columns are disposed radially outwardly of each pin and fixed to the end plates The support columns prevent undue strain on the pins. Ventilated guards may also be located between each pair of columns to limit access to internal working components of the brake.

Abstract: Systems and methods disclosed herein may be useful for use in a disk brake assembly. In this regard, a disk brake system may comprise a combination of split friction disk assemblies and solid disk assemblies. These split friction disk assemblies and/or solid disk assemblies may be arranged together in any suitable pattern or position.

Abstract: A swing barrel type positive displacement pump using a cross shaft joint bearing includes a main shaft (1) for connecting with a motor. The upper part of the main shaft (1) is slantwise provided with a rotating barrel (2) which swings along with the rotation of the main shaft (1). The periphery of the rotating barrel (2) is evenly provided with more than three pin shafts (3). Each pin shaft (3) is sleeved with a cross shaft joint bearing (4). Each cross shaft joint bearing (4) includes a bearing (41) sleeved on the pin shaft (3). The outer ring of each bearing (41) is fixedly connected with a swing sleeve (42). Fixed shafts (421, 421?) with the same axis extend along the left and right sides of the swing sleeve (42), respectively. The fixed shafts (421,421?) are sleeved with a left and right bearing (43, 43?), respectively. The outer rings of the left and right bearings are fixedly connected with left and right cross shaft swing sleeves (44, 44?), respectively.

Abstract: Systems and methods for reducing the speed of an aircraft are disclosed herein. An electronic brake control system may include a first braked wheel of a landing gear system, a brake pedal electronically coupled to the first braked wheel, and a first actuator. The first actuator may be configured to deliver a scalable clamping force on the first braked wheel via a brake stack. The first actuator may be configured to deliver an emergency maximum clamping force on the first braked wheel in response to the electronic brake control unit being in an emergency condition braking mode and a signal being received proportional to the brake pedal displacement. The emergency maximum clamping force results in the first actuator being driven in an overdriven state.

Abstract: Friction disks, such as rotors and stators, including floating cores are disclosed. The friction disks may include a carrier plate and a wear liner coupled to each side of the core. The floating core may be located between the wear liners. The floating core may include a key which is located within a key notch in the carrier plate. The key may prevent the floating core from rotating relative to the carrier plate.

Abstract: The present disclosure relates to hybrid brake systems, The hybrid brake systems may comprise one or more electromechanical actuators and one or more hydraulic adjusters, The hybrid brake system may further comprise a housing configured to store and/or conduct fluid. The hybrid brake system may also further comprise a fluid reservoir.

Abstract: An annular-shaped disk half of a split friction disk assembly for a disk brake system. The disk half includes a friction surface and a non-friction surface. The friction surface is at an axial end of the disk half. The non-friction surface is at an axial end of the disk half on a side opposite of the friction surface. The non-friction surface includes a contact surface and a non-contact surface. The non-contact surface is recessed from the contact surface.

Abstract: A hub arrangement has hub parts which are rotatable relative to one another. Each hub is assigned a braking device, which is actuatable jointly with the braking device of the respective other hub.

Abstract: Systems and methods disclosed herein may be useful for improved torque tubes. In this regard, an apparatus is provided comprising a torque tube having an axis, a proximal terminus and a distal back leg, a first spline circumferentially disposed on the torque tube, a second spline circumferentially disposed on the torque tube, the first spline extending from a first location proximal to the distal back leg to a first terminal point, and the second spline extending from a second location proximal to the distal hack leg to a second terminal point, the second terminal point being distal to the first terminal point.

Abstract: Systems and methods disclosed herein may be useful for use in a disk brake assembly. In this regard, a disk brake system may comprise a combination of split friction disk assemblies and solid disk assemblies. These split friction disk assemblies and/or solid disk assemblies may be arranged together in any suitable pattern or position.

Abstract: The invention relates to a method of using and renovating a brake disk (9), the method comprising steps of using the disk in a plurality of lives and compensating for a reduction in the thickness of the disk after each life by assembling the disk with a complementary portion or by associating the disk with another disk of rotor or stator type if the disk is itself respectively of stator or rotor type.

Abstract: A floating-disk type brake system that includes floating disk assemblies placed respectively in spaces between a rotating member, such as a wheel of a transportation machine or a rotating shaft of a machine tool, and a stationary member to reduce differences in the rotating speed of adjacent sliding surfaces of the floating disk assemblies in frictional sliding engagement. The floating-disk type brake system includes a first floating disk assembly and a first disk assembly that are arranged between the ring gear and the planet carrier of a planetary gear built in a transmission or the like, and the first floating disk assembly and the first disk assembly are pressed together into frictional engagement to brake a rotating shaft.

Abstract: The present invention relates to a system comprising: a shaft having a distal end and a proximal end; a casing defining a housing in which a hydraulic device is rotatably mounted on the shaft; and a sealing element comprising a low pressure dynamic sealing means and a reinforced dynamic sealing means formed by a static seal tightly mounted on a friction pad, such as to isolate the dynamic sealing means from the rotating hydraulic device, said sealing element defining a discharge chamber between the dynamic sealing means and the reinforced dynamic sealing means, which discharge chamber is connected to a drain via a pipe arranged on the surface of the shaft, between the hydraulic device and the shaft, so as to discharge the fluid located in the discharge chamber, such that said discharge chamber is not subjected to the pressure in the casing of the hydraulic device.

Abstract: A brake device for a work vehicle includes a brake unit including a brake disc plate and a piston having a slide portion slidably supported by an axle housing and a pressure portion for pressing the brake disc plate. A slack adjuster mechanism is disposed on the axially opposite side of the brake disc plate with respect to the piston while being disposed further on an inner peripheral side than the slide portion of the piston. The slack adjuster mechanism maintains a clearance between the piston and the brake disc plate at a predetermined clearance by mechanically adjusting a non-actuated position of the piston.

Abstract: A disc brake having one or multiple axially movable rotor discs with annular friction surfaces disposed axially between an annular piston in an annular pressure cavity formed in a housing and annular reaction plate attached to the piston. Friction pads are provided on the reaction plate and also on an axially movable annular reaction disc disposed between the rotor discs. A positioning plate is disposed between the piston and rotor discs and has axially movable poppets thereon, each with a friction pad for contacting the adjacent rotor disc. Individual springs on each poppet bias the poppet pads, rotor discs and friction pads axially together to provide a desired initial braking torque. Upon fluid pressure applied in the piston cavity, the housing moves the positioning plate to move the poppets to release braking torque.

Abstract: A liquid cooled brake is provided having an improved housing that provides strong yet lightweight structural support. The brake includes end plates disposed about a driven shaft and axially spaced from one another. A plurality of axially extending pins connect the end plates. A friction plate is coupled to the driven shaft for rotation therewith and is axially movable relative to the driven shaft. Another friction plate defines a fluid jacket and is coupled to the pins. The friction plate is fixed against rotation, but axially movable, relative to the pins. A pressure plate is configured for selective movement towards the friction plates. Support columns are disposed radially outwardly of each pin and fixed to the end plates The support columns prevent undue strain on the pins. Ventilated guards may also be located between each pair of columns to limit access to internal working components of the brake.

Abstract: The invention relates to an electromechanical brake, in particular for aircraft, the brake comprising a support carrying at least one electromechanical actuator comprising a pusher that is axially displaceable towards friction elements in order to apply a braking force to the friction elements, selectively, wherein the actuator is mounted on the support via a connection member allowing at least a portion of the actuator carrying the pusher to tilt angularly.

Abstract: A brake measurement system that utilize angular and/or linear displacement sensors to measure movement of a member operatively coupled to a movable member of a brake, wherein displacement of the movable member of the brake is indicative of brake wear. The system can include a twisted spline member operatively coupled to a moveable member of a brake assembly, and an angular displacement sensor operatively coupled to the twisted spline member. Movement of the moveable member is converted by the twisted spline member into an angular displacement sensed by the angular displacement sensor.