Abstract: A motorization mechanism for a wheel of a landing gear assembly, including an input gear driven by a motor-reducer unit; a pendulum element, carrying two intermediate gear wheels driven in rotation by this element, with the intermediate gear wheels having synchronized rotation blocking mechanisms such that the two intermediate gear wheels can be simultaneously engaged or simultaneously released. The angular displacement of the pendulum element around its rotation axis is limited by a first and a second adjustable stop. These adjustable stops are set so that when the pendulum element comes into contact with an adjustable stop, the blocking mechanism of the intermediate gear wheels is freed, whereas it is engaged when the pendulum element is in the neutral position. This pendulum assembly faces a cog wheel that is capable of driving the hub of the said wheel.

Abstract: A transmission includes first and second rotating shafts arranged in parallel and multiple gear sets including gears fixed to the first rotating shaft and rotatable gears rotatably supported on the second rotating shaft. Each gear set includes first and second engagement units engaged with first and second engagement-target portions formed on end surfaces of each rotatable gear and transmitting torque in first and second rotational directions; and a shift mechanism axially and independently moving the first and second engagement units. Each one of the first and second engagement units has a slanted portion allowing the engagement unit to withdraw from the rotatable gear when the other one of the engagement units is disengaged and torque transmitted in a corresponding direction is input. Each one of the first and second engagement unit of each gear set moves integrally with the other one of the engagement units of an adjacent gear set.

Abstract: A transmission connectable to an input member and having an output transfer gear, first and second transmission input shaft members, first and second countershaft members, an idler shaft, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the transmission input members and the output member.

Abstract: A motorcycle having a transmission which includes a counter shaft to which a rotation of a crankshaft disposed in an engine is transmitted and a drive shaft to which a rotation of the counter shaft is transmitted. A pair of drive gears mounted on the counter shaft so as to be rotated integrally with the counter shaft, and a pair of driven gears mounted on the drive shaft so as to be meshed with the pair of drive gears, respectively, to be rotatable therewith, and a friction ring is interposed between the pair of driven gears.

Abstract: The flexible bearing of the wave generator for a wave gear device is a deep-groove ball bearing in which an outer race and an inner race form an annular flexible bearing ring capable of bending in a radial direction. A ball diameter Da is set to be 5 to 15% greater than that of each model of the currently available product. Dimensions of orbital plane radii ro, ri of the inner and outer races are set so that the ratio ro/Da of the orbital plane radius ro of the inner race and the ball diameter Da, as well as the ratio ri/Da of the orbital plane radius ri of the outer race and the ball diameter Da, are both in the range of 0.51 to 0.52. With this configuration, the service life of the flexible bearing can be extended.

Abstract: A transmission has a simple structure and can be produced at a low cost. A second electromagnetic clutch is shut off at a timing when an electric motor is decelerated and before selecting motion is finished, and thereafter, a shift/select shaft is moved to a terminal end position of the selecting motion with an inertia of a driven part (a second output hub) of the second electromagnetic clutch. At a timing after a predetermined period has passed from the timing, a first electromagnetic clutch for the next shifting motion is connected. The electric motor is driven synchronously with the end of the selecting motion or immediately in response to the end, thereby to start the next shifting motion. In this manner, gear change can be rapidly conducted.

Abstract: A vehicle transmission includes first, second, third and fourth meshing gear-pinion pairs. The transmission produces a first speed ratio through a power path that includes first and second input shafts, a gear coupler and the first, second and third gear-pinion pairs. The transmission also produces a second speed ratio through a power path that includes the second input shaft, the gear coupler and the second, third and fourth gear-pinion pairs.

Abstract: A transmission is connectable to an input member and includes an output transfer gear, first and second transmission input shaft members, first, second and third countershaft members, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of gears, synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.

Abstract: A transmission is connectable to an input member and includes an output transfer gear, first and second shaft members, first, second and third countershaft members, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of gears, synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.

Abstract: A device for changing a transmission ratio between a turbine shaft and a shaft of a starter-generator of an aeroengine, the device including: first and second fixed gear wheels carried by the shaft of the starter-generator; first and second idler gearwheels carried by the turbine shaft, and meshing respectively with the first and second fixed gearwheels to define different gear ratios; a changeover sleeve interposed between the idler gearwheels and mechanically coupled to the turbine shaft, the changeover sleeve being movable in translation on the turbine shaft between two coupling positions; and a mechanism causing the changeover sleeve to move in translation automatically from either one of its coupling positions to the other one when the sum of torques between the turbine shaft and the starter-generator shaft changes sign.

Abstract: A reversible gearbox features a first input gear mounted on for rotation about a first axis and a second input gear mounted for rotation about a second axis parallel to the first axis in a counter-rotational relationship with the first input gear. The input gears are arranged for selective coupling of either one thereof to a drive source rotatable in a predetermined direction, whereby at least one output gear is arranged within the gear train for driven rotation of the output gear in opposite directions depending on which of the first and second input gears is driven in the predetermined direction by the drive source. Accordingly, a unidirectional drive source can be used to drive the gearbox output in either direction by selecting from different input connections. The gearbox may be employed for an agricultural auger to be driven by the power take-off of a tractor.

Abstract: A transmission is connectable to an input member and includes an output transfer gear, first and second shaft members, first, second and third countershaft members, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of gears, synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.

Abstract: A wind energy plant comprising a gearbox with a gearbox housing, a rotor hub mounted outside of the gearbox and a satellite carrier in the gearbox housing, the satellite carrier having an input side and an output side. At the input side, the satellite carrier is only connected to the rotor hub and mounted in the gearbox housing without a bearing. At the output side, the satellite carrier is mounted in the gearbox housing via a torque bearing arranged in the gearbox housing on the output side of satellite carrier.

Abstract: A multi-clutch power shift transmission for a motor vehicle with at least one prime mover is provided, where a shaft brake unit is arranged to reduce the rotational speed of one of two input shafts, and a central synchronizing unit is arranged to make a first of the input shafts rotate faster or slower than a second of the input shafts. The shaft brake unit and the central synchronizing unit are arranged to be simultaneously activated in order to reduce rotating speeds prior to the engagement of tooth clutches when the output shaft is not rotating. The input shaft brake unit is arranged to be used when performing a multi-step power shift.

Abstract: A transmission control system to enable smooth engagement of meshing engagement device when establishing a forward gear position by engaging the meshing engagement device and a forward clutch while a vehicle is stationary. For example, when a synchro device is operated so as to establish a predetermined forward gear position, it becomes difficult to smoothly couple a first speed drive gear to the input shaft by the synchro device. However, temporarily engaging a reverse clutch during the process of operation of the synchro device allows a reverse torque to act on the first speed drive gear to apply torsion to a power transmission path between the first speed drive gear and a driven wheel. Furthermore, a repulsive force is applied and generates backlash between the synchro device and the first speed drive gear, thus enabling smooth operation of the synchro device.

Abstract: A transmission is connectable to an input member and includes an output transfer gear, first and second shaft members, first, second and third countershaft members, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of gears, synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.

Abstract: Described is a toothed-rack steering gear having a drive pinion (3) which is rotatably mounted in a steering housing (2) and which engages into a toothed rack (4) which is axially movably mounted in the steering housing (2), having a thrust piece (5) which preloads the toothed rack (4) against the drive pinion (3), and having at least one further machine element (15) which is operatively connected to the toothed rack (4) and which is mounted so as to be radially immovable with respect to the toothed rack (4), wherein the preload force exerted on the toothed rack (4) by the thrust piece (5) causes bending of the toothed rack (4).

Abstract: A propulsion system includes two electric motors, a gearbox with at least three forward gears and a control unit to control the electric motors and the engagement of the gears. The gearbox includes two primary shafts, one associated to with the odd gears and the other with the even gears and are permanently connected each to a respective electric motor. The control unit controls the two electric motors and the engagement of the gears of the gearbox to provide at least a first operating mode in which the first gear and the second gear are engaged at the same time and a second operating mode in which the second gear and the third gear are engaged at the same time. In each of these operating modes the torque being transmitted by both the electric motors.

Abstract: A pivotal boat drive having a transmission unit (1) which is driven by a drive engine via a connection point (A). The connection point has an input shaft (11) of a drive device (10) that is rotatably positioned around a first rotational axis (5) and an output shaft (3) that is coupled with the input shaft (11) and rotatable around a second rotational axis (6). The rotational axes (5, 6) are neither parallel nor concentrically positioned with respect to one another. At least one additional connection point (B, C) is provided at the transmission unit (1), at which an additional drive device (20), driven by an additional drive engine, can be positioned to drive the output shaft (3).

Abstract: Provided is a method of driving a joint device suitably used for a robot joint with improved back drivability. A first motor and a second motor are fixedly connected to a first link. An output shaft of the first motor is coupled to an internal gear of a differential speed reducer. An output shaft of the second motor is coupled to an external gear of the differential speed reducer. A second link is coupled to the internal gear of the differential speed reducer. When the first link and the second link are relatively stopped to keep a joint angle fixed, both of the first motor and the second motor are rotated with a rotational speed larger than zero, and the rotational speed of the first motor and that of the second motor are differentiated to stop the second link.