Abstract: A coupling assembly for transmitting torque between a first body and a second body is disclosed herein. The coupling assembly includes a diaphragm plate extending radially between a radially inner periphery fixed for rotation with the first body. The diaphragm plate extends to a radially outer periphery and is operable to elastically deform in response to changes in the axial positions of the first and second bodies relative to one another. The coupling assembly also includes a socket assembly engaged with the radially outer periphery of the first diaphragm plate for concurrent axial movement in response to changes in the axial positions of the first and second bodies relative to one another. The socket assembly is also operable to transmit torque between the second body and the diaphragm plate. The socket assembly includes a radially-accommodating structure operable to at least partially move in response to changes in an outer profile of the second body.

Abstract: A method of constructing an integral coupling system containing a sun gear is disclosed. An integral sun gear is provided that has a sun gear component and a connection shaft. A first straight flat inner edge is machined on a first diaphragm to use as a datum point, and then the straight flat edge is fixtured. A tapered outer edge is machined on the first diaphragm, and the first diaphragm is welded to the integral sun gear. The flat inner edge is generally perpendicular to a central axis of the connection shaft.

Abstract: A drive train for a wind turbine is provided. The wind turbine comprises a low speed shaft connected to blades of the wind turbine and a higher speed shaft connected to a generator. The drive train also includes a bearing that substantially supports the weight of at least the low speed shaft. A compound planetary gear stage is connected to the low speed shaft and the higher speed shaft, and includes a rotating carrier, a non-rotating ring gear, a plurality of planetary gears, and a rotating sun gear. The sun gear is connected to the higher speed shaft.

Abstract: An epicyclic gear system (A) includes helical sun and ring gears (2, 4) and helical planet pinions (6) located between and engaged with the sun and ring gears. The gear system also includes a carrier (8) having an end wall (12) and flexpins (20) cantilevered from the end wall and extended into the planet pinions. Each flexpin at its end remote from the end wall carries a sleeve (22) that extends back over the flexpin where it is spaced from the flexpin. The planet pinion for the flexpin rotates around the sleeve on a bearing (24). The arrangement is such that the flexpin will flex adjacent to the carrier end wall circumferentially along the pitch circle of the carrier in one direction and circumferentially in the opposite direction adjacent to attachment of the sleeve. But the helical gear imparts a couple to the planet pinion that seeks to tilt the sleeve radially toward or away from the main axis of the system.

Abstract: An epicyclic gear system (A) includes sun and ring gears (2, 4) and planet pinions (6, 8) arranged in two side-by-side arrays (a, b) between the sun and ring gears, there also being a carrier (10, 50) to which planet pinions are coupled through flexpins (30). The carrier has primary and secondary walls (20, 22) between which the pinions are located and webs (24) connecting the walls. The flexpins for one array of pinions are cantilevered from the primary wall and the flexpins for the other array of pinions are cantilevered from the secondary wall. When the gear system operates, the carrier along its primary wall is subjected to an externally applied torque which transfers through the system at the planet pinions of the two arrays. The load path (pa) for the pinions at the primary wall is shorter than the load path (pb) for the pinions at the secondary wall, and this disparity causes the carrier to distort.

Abstract: A bearing oil supply assembly includes (a) a plate member with opposed first and second sides, the plate member having a first bore formed in the first side which is adapted to receive a first bearing; (b) an annular manifold attached to the plate member such that the plate member and the manifold cooperatively define an annular oil gallery; and (c) a plurality of passages formed in the manifold, the passages cooperating with the plate member to define a plurality of generally axially-directed pathways in fluid communication with the first bore and the oil gallery. The passages are substantially evenly spaced around the circumference of the manifold. The oil supply assembly may be used to supply oil to two bearings carrying separate shafts running at different speeds.

Abstract: A coupling system for connecting a sun gear to a shaft within a planetary gear train, includes a sun gear coupling connecting the sun gear to the shaft. The sun gear coupling has at least one undulant flexible section joined to an inflexible spindle for accommodating misalignment between the sun gear and the shaft. The flexible section comprises a cylindrical ring having a diameter greater than the diameter of the spindle, and joined to the spindle by two longitudinally spaced apart diaphragms. The juncture between the diaphragms, the ring, and the spindle is curved in cross section on an outer side to improve flexibility and minimize stress concentrations, and the inner sides of the diaphragms are straight edges which result in a non-symmetric contour of the diaphragm walls.

Abstract: The invention relates to a backlash-free planetary gear unit comprising a sun gear, an internal gear and at least one planet gear which is in mesh with said sun gear and said internal gear and which is arranged on a planet carrier such that it is rotatable about a planetary axis of rotation, wherein the toothed planet gear has a plane of division which is oriented perpendicular to the planetary axis of rotation and by means of which the planet gear is divided into a first planet subgear and a second planet subgear, wherein the first planet subgear is preloaded relative to the second planet subgear by a spring bar arranged in these two planet subgears substantially parallel to the planetary axis of rotation, and wherein a plurality of spring bars is arranged around the planetary axis of rotation.

Abstract: A wind turbine (WT) is disclosed, wherein the rotor hub (1) transmit the driving torque to a planet carrier (5) of a planetary type gear transmission and a main bearing (9) attached to the supporting structure (3), such as the nacelle (N), takes up the transversal shear stresses and bending moment forces from the rotor hub (1). The ring gear (8) of the gear transmission is flexibly secured to the supporting structure, so that temporary radial displacements of the toothed inner surface of the ring gear may be allowed, whereby the radial forces between the planet gears (7) and the ring gear (8) will be substantially equalized between the planet gears (7). Alternatively or additionally, the flexibility allows for temporary angular displacements of the ring gear (8) about the axis of rotation.

Abstract: A marine vessel propulsion unit includes an engine, a drive shaft, a propeller shaft, a propeller, an intermediate shaft, a forward-reverse switching mechanism, and a shock reduction mechanism. The intermediate shaft is arranged on a central rotation axis of the propeller shaft. The intermediate shaft is arranged to transmit rotation between the drive shaft and the propeller shaft. The forward-reverse switching mechanism is arranged to switch a rotational direction of the propeller shaft to a forward drive direction or a reverse drive direction. The shock reduction mechanism includes a plurality of spring members and a pair of stopper portions. The shock reduction mechanism is arranged on the central rotation axis of the propeller shaft. The plurality of spring members are arranged to absorb a force in the rotational direction by elastically deforming in the rotational direction when the force in the rotational direction is applied to the intermediate shaft.

Abstract: A transmission with a housing (13, 13?, 33) having at least two shafts (1, 2) for adjusting a desired gear ratio. The two shafts (1, 2) communicate with each other by a gearwheel set (5) and are deposed in the housing (13, 13?, 33) by bearing brackets (7, 8). The bearing brackets (7, 8) are deposed on the housing by way of at least one damping element (17) for damping noise and vibration. A shifting device that adjusts the gear ratio is affixed to at least one of the bearing brackets (7, 8) which is decoupled from the housing (13, 13?, 33).

Abstract: A gearbox is provided having multiple sun gears and one or more planet stages. The planet stages can include a first planet stage and a second planet stage. A first sun gear is connected to the first planet stage, and a second sun gear is connected to the second planet stage. The torque transmitted from the planet stages is at least partially distributed among the first sun gear and the second sun gear.

Abstract: A transmission device (1) having at least one planetary gearset (2) and at least one frictional shift element (3) by which a ring gear (4), of the planetary gearset (2), can be connected to a component (5) that is fixed to a transmission housing. The ring gear (4) of the planetary gearset (2) is at least partially radially arranged within an inner disk carrier (6) of the shift element (3). The ring gear (4) and the inner disk carrier (6) are supported on a main transmission shaft (7) by a common carrier element (8). The ring gear (4) and the inner disk carrier (6) are radially separated from one another at least over a certain area.

Abstract: A coupling system for connecting a sun gear to a shaft within a planetary gear train, includes a sun gear coupling connecting the sun gear to the shaft. The sun gear coupling has at least one undulant flexible section joined to an inflexible spindle for accommodating misalignment between the sun gear and the shaft. The flexible section comprises a cylindrical ring having a diameter greater than the diameter of the spindle, and joined to the spindle by two longitudinally spaced apart diaphragms. The juncture between the diaphragms, the ring, and the spindle is curved in cross section on an outer side to improve flexibility and minimize stress concentrations, and the inner sides of the diaphragms are straight edges which result in a non-symmetric contour of the diaphragm walls.

Abstract: A flexible pin for a helical gear system. A countering realignment equal and opposite to the misalignment caused by the overturning moment and other gear forces is created without adding components or wearing surfaces. On the pin elements, one or more different or varying cross sections with the principal axes of their sections non-vertically orientated utilize the tangential and radial forces to cause deflections in two planes to perfectly compensate for misalignment caused by helical gear forces, thus keeping the mesh aligned the same as when using spur gears and traditional flexpins.

Abstract: A gearing system using modular gear bearing components. Each component is composed of a core, one or more modules attached to the core and two or more fastening modules rigidly attaching the modules to the core. The modules, which are attached to the core, may consist of gears, rollers or gear bearing components. The core orientation affects the orientation of the modules attached to the core. This is achieved via the keying arrangement of the core and the component modules that attach to the core. Such an arrangement will also facilitate the phase tuning of gear modules with respect to the core and other gear modules attached to the core.

Abstract: A coupling system for connecting a sun gear to a shaft within a planetary gear train, includes a sun gear coupling connecting the sun gear to the shaft. The sun gear coupling has at least one undulant flexible section joined to an inflexible spindle for accommodating misalignment between the sun gear and the shaft. The flexible section comprises a cylindrical ring having a diameter greater than the diameter of the spindle, and joined to the spindle by two longitudinally spaced apart diaphragms. The juncture between the diaphragms, the ring, and the spindle is curved in cross section on an outer side to improve flexibility and minimize stress concentrations, and the inner sides of the diaphragms are straight edges which result in a non-symmetric contour of the diaphragm walls.

Abstract: A hinge mounting for an adjustment device of a motor vehicle seat having a first external gear wheel comprising a first inner toothed surface and a second external gear wheel comprising a second inner toothed surface. At least two planet wheels mesh with both the first and second inner toothed surfaces. A driving toothed sun wheel meshes with the at least two planet wheels. At least one of the planet wheels has a ring-shaped spring forming the toothed surface of the plane wheel that is radially elastically deformable and permanently exert a force onto the sun wheel, the first inner toothed surface and the second inner toothed surface; and/or the sun wheel comprises a ring-shaped spring forming at least a portion of the toothed surface of the sun wheel and configured to be radially elastically deformable and permanently exert a force onto the planet wheels and bias these with force into abutment with the first and second inner toothed surfaces.

Abstract: A gear reducer includes a rotatable planet carrier supporting at least one planetary gear for axial rotation thereon, a stationary ring gear extending around and engageable with the at least one planetary gear, and a moveable ring gear extending around and engageable with the at least one planetary gear. A pitch diameter of the stationary ring gear is substantially identical to a pitch diameter of the moveable ring gear.

Abstract: The invention relates to a motor vehicle transmission device which, in order to form a plurality of gears, forms a Lepelletier transmission, wherein at least one torsional damper is provided in the Lepelletier transmission, and also to a motor vehicle drivetrain having a motor vehicle transmission device of said type.

Abstract: A planetary gear train having planetary gears (8) which are rotatably mounted on a planet carrier (18) and are in toothed contact with an internally toothed ring gear (14) and a sun gear (4). For a simplified, process-safe and inexpensive backlash of the planetary gears (8) without axial displacement of the sun gear (4), the ring gear (14) and the planetary gears (8) are conically designed so that planetary gear axles (16) are retained in the planetary gear carrier (18) at an inclined angle (a) and that the planetary gears (8) are axially movably disposed upon and coordinated with the planetary gear axles (16) and the position of the planetary gears (8) can be adjusted within the planetary train by adjusting mechanisms for adjusting a backlash.

Abstract: A power steering system for translating movement to a pair of wheels of a vehicle having an engine is disclosed. The system includes a steering assembly adapted for coupling engagement to the wheels for turning the wheels. The system includes a hydraulic pump having a pump input and a pump output and is coupled to the steering assembly and a planetary gear set. The system also includes a steering shaft operatively connected to the hydraulic pump for controlling a direction of the pump output and coupled to the steering assembly. The system further includes a variable-ratio drive mechanism having an electric motor and a controller. The electric motor is coupled to the planetary gear set and the controller communicates with the electric motor for controlling a rotational speed of the planetary gear set to maintain the pump output.

Abstract: A planetary gear train is described which includes a sun gear, three or more planet gears, an annulus as well as a planet gear carrier, whereby the input is provided via the sun gear and the output is provided via the annulus or via the planet gear carrier, whereby each planet gear is mounted on both sides in a roller bearing, and whereby the planet gear carrier includes two axially spaced bearing washers as well as at least three webs that connect the bearing washers. Each roller bearing is configured as a single-row or multi-row cylindrical roller bearing, each planet gear has a flexurally elastic axis projecting axially on both sides beyond the gear body of the planet gear, and the connection between each roller bearing and the appertaining axis is configured to be spherically moveable.

Abstract: A drive train for a wind turbine is provided. The wind turbine comprises a low speed shaft connected to blades of the wind turbine and a higher speed shaft connected to a generator. The drive train also includes a bearing that substantially supports the weight of at least the low speed shaft. A compound planetary gear stage is connected to the low speed shaft and the higher speed shaft, and includes a rotating carrier, a non-rotating ring gear, a plurality of planetary gears, and a rotating sun gear. The sun gear is connected to the higher speed shaft.

Abstract: The invention includes a precision planetary gear system which requires 2:1 gear ratio. The planetary gear system consists of three, or more planet gear assemblies. By adding a local degree of freedom, the planet gear assembly could be tilted relative to the carrier by a spring-loaded annular ring through a spherical feature thus force the three, or more planet gear assemblies symmetrically mesh into the sun gear and internal gear. A couple of elastomeric sleeves are introduced into the connection between the planet housing and the carrier so as to balance the load evenly among the three planet assemblies and to reduce the speed fluctuation of transmitted motion as well as the noise and vibration.

Abstract: A damped planetary transmission comprising an input member, an inertial member connected to the input member, a planetary gear assembly connected to the input member, the planetary gear assembly comprising a carrier member that is directly and fixedly connected to the input member, a brake member engaged with a ring gear of the planetary gear assembly, the planetary gear assembly connected to an output member, a one-way clutch operationally disposed between the input member and the output member, and a vibration isolator directly connected for torque flow between the input member and the one-way clutch.

Abstract: This invention relates to epicyclic gears having a carrier (12), a generally central sun gear (11), an outer annular gear (13) and an intermediary helical planet gear (14) which is mounted on the carrier (12) by a flexible pin assembly (15). The gear further includes a reaction member in the form of a rolling ring (22) at each axial end of the helical planet gear (14) to provide a respective radially inward reaction load onto the planet gear (14) in a sense that the reaction members (22) together resist a twisting moment on the planet gear (14) arising from the tooth loads on that gear.

Abstract: When, according to the invention, a one-stage planetary gear is constructed with radially resilient planet wheels and sun shaft (1), and where the centre axes are parallel with the sun axis and positioned closer to it than the axes of the planet wheels (2), a good engagement between the contact-bearing surfaces and thereby a high degree of moment transfer are achieved. It is more-over ensured that the gear can operate at en extremely high number of revolutions.

Abstract: A forward and rearward motion switching device to be used in an automatic transmission system for a vehicle, comprises a planetary mechanism provided with an input element, an element to be fixed and an output element which are disposed coaxially and are rotatable relative to each other, the planetary mechanism outputting a rotational driving force of an internal combustion engine transmitted to the input element as a rotational driving force in the reverse direction to the rotation of the input element from the output element through the input element, the element to be fixed and the output element, and a brake capable of fixing the element to be fixed of the planetary mechanism. The brake comprises a rotational drum which is integrally formed with the element to be fixed and has an outer peripheral surface, and a brake band that surrounds the outer peripheral surface of the rotational drum to fix the same.

Abstract: An epicyclic gear system (A) includes a sun gear (2), a ring gear (4) located around the sun gear, planet gears (6) organized in two arrays between the sun and ring gears, and a carrier (8) having walls (14) located beyond the planet gears and flexpins (24) that project from the walls into the planet gears. Each flexpin includes an inner pin (30) provided with a flange 36 that is secured to the wall from which the inner pin projects, thus cantilevering the inner pin from the wall, and a sleeve (32) that is cantilevered from the opposite end of the inner pin and extends back over the inner pin, thus providing a double cantilever. Between the sleeve of the flexpin and the planet gear for that flexpin is a double row tapered roller bearing (26). The planet gears on the one array may be offset angularly with respect to the planet gears of the other array.

Abstract: A starter apparatus is disclosed. The starter apparatus includes a housing, a motor disposed within the housing, the motor having an armature shaft, and a planetary gear train disposed within the housing and in operable communication with the armature shaft. The planetary gear train includes a ring gear, a carrier shaft in operable communication with the planetary gear train for outputting a torque of the armature shaft transferred through the planetary gear train, and a dampener in exclusive connection between the ring gear and the housing.

Abstract: An epicyclic gear mechanism includes: a sun gear; a ring gear positioned outside of the sun gear, with respect to a radial direction of the sun gear; a plurality of planet gears positioned between the sun gear and the ring gear with respect to the radial direction, each of the plurality of planet gears meshing with the sun gear and the ring gear; a carrier rotatably supporting the plurality of planet gears, the carrier having a first carrier section supporting at least one planet gear of the plurality of planet gears, and a second carrier section supporting another at least one planet gear that is different from the at least one planet gear; and an adjustment member for adjusting a relative positional relationship in a circumferential direction between the first carrier section and the second carrier section.

Abstract: A reduction gear includes a rotatable carrier, a ring gear rotatably fitted in an offset supporting hole in the carrier, and first and second sun gears having first and second outer teeth meshed with first and second inner teeth of the ring gear, respectively. The rotation of the carrier is reduced in speed and outputted as relative rotation of the first and second sun gears. Thus, it is possible to secure a large reduction ratio although in a small structure having a small number of components. Also, it is possible to change the reduction ratio by a slight design change of the number of teeth in one or both of the outer teeth of the first and second sun gears, thereby improving the versatility.

Abstract: A vehicle transmission includes a crankshaft extending through a seal cover and into an oil-storing end portion of a driven shaft. The oil-storing end portion of the driven shaft defines a lubricating space filled with lubricating oil, and extends into the seal cover. A unidirectional clutch is disposed in the lubricating space and outwardly of the seal cover.

Abstract: A starter motor is provided having a starter motor housing with an electric motor mounted therein. A stationary gear base mounted onto the starter motor housing and includes a plurality of pockets formed therein and spaced thereabout. A stationary gear is rotatably mounted within the stationary gear base for limited rotational movement and includes a plurality of legs that extend into the pockets. One or more variable rate dampening members are positioned within the pockets, circumferentially between the legs of the stationary gear and inner walls of the pockets. The variable rate dampening members provide variable rate dampening such that when the starter motor experiences high frequency, low amplitude oscillations the dampening members provide a first spring rate and when the starter motor experiences a high amplitude impact for a short duration of time, the dampening members provide a second spring rate that is stronger than the first spring rate.

Abstract: A transmission includes an input shaft having an internal bore at one shaft end and a main shaft having an extension formed at one shaft end that is received within the internal bore. The internal bore is defined by an inner peripheral surface and the extension is defined by an outer peripheral surface that is spaced apart from the inner peripheral surface. A resilient member is positioned within the internal bore and reacts between the inner and the outer peripheral surfaces to center the main shaft and the input shaft relative to each other.

Abstract: A gearing system using modular gear bearing components. Each component is composed of a core, one or more modules attached to the core and two or more fastening modules rigidly attaching the modules to the core. The modules, which are attached to the core, may consist of gears, rollers or gear bearing components. The core orientation affects the orientation of the modules attached to the core. This is achieved via the keying arrangement of the core and the component modules that attach to the core. Such an arrangement will also facilitate the phase tuning of gear modules with respect to the core and other gear modules attached to the core.

Abstract: In a drive unit (10) of an adjuster (80) of a vehicle seat, in particular of a motor vehicle seat, having at least one particularly electronically commutated motor (12) and at least one gear stage (14) provided on the output side of the motor (12), the gear stage (14) is designed as a differential gear, which by making use of two different speeds and/or directions of rotation causes a movement of an output (54) around an axis (A).

Abstract: A micro gear system, operating according to the principle of a strain wave gear system, a Wolfrom gear system, or a similar planetary gear system comprises at least one sun wheel (14) and at least two planet wheels (16) meshing with the sun wheel (14). The sun wheel (14) is rotatably fixed to drive shaft (20) placed along a longitudinal axis (18) of the gear system. The planet wheels (16) indirectly or directly mesh with a toothing which is rotatably fixed to a drive shaft (28) placed centrally along the longitudinal axis of the gear system. The drive shafts (20,28) are embodied as hollow shafts (30,32) having continuous bore holes (34,36) such that information or fluid media can be directed through the gear system. A sealing system (42) comprising a labyrinth seal (44) which includes a plurality of annular grooves (46) is disposed between the hollow shafts (30,32).

Abstract: A wedge loading mechanism for an eccentric planetary traction drive in which a roller having a flexibly mounted shaft is positioned between two raceways forming a convergent wedge. Rotation of either of the two raceways wedges the roller within the convergent wedge squeezing the roller between the two raceways thereby transmitting rotational motion and torque between the two raceways. The flexibly mounted shaft generates differences between an effective supporting stiffness of the roller and an contact effective stiffness at the points where the roller contacts the two raceways. The difference in the effective stiffness allow the roller to operate efficiently at smaller convergent wedge angles.

Abstract: Systems and methods for reducing or eliminating backlash to control gear rattle include a planetary gear set with a planet carrier including a first part that supports at least one forward-torque carrying planet gear that has at least one tooth contacting a drive side of gear teeth of an associated sun gear and ring gear and a second part that supports at least one reverse-torque carrying gear that has at least one tooth contacting a coast side of gear teeth of the associated sun gear and ring gear, the second part of the carrier being rotationally biased relative to the first part to reduce or eliminate effective backlash of the gear set.

Abstract: A planetary gear drive includes a thin, elastically resilient internal gear arranged within an annular housing, in which there is also a carrier that is rotatably supported by a pair of tapered roller bearings. A sun gear located concentrically within a cylindrical portion of the carrier is arranged so that the sun gear is capable of floating movement perpendicular to the drive axis. Any uneven meshing caused by error in the assembly or manufacture of the gears is automatically cancelled by radial elastic deformation of the internal gear and the floating movement of the sun gear, reducing backlash. Moreover, the use of two tapered roller bearings makes it possible to increase the moment capacity of the planetary gear drive.

Abstract: A center case has a force-receiving wall and a fixed wall, and is rigidly fixed in a starter. A gear-forming section is coaxially arranged with the center case, and has a forcing wall and a movable wall on the side of the center case. A cushion member is elastically received between the force-receiving wall of the center case and the forcing wall of the gear-forming section. The fixed wall of the center case and the movable wall of the gear-forming section are arranged to have a gap, and oppose each other. When an excessive torque works on the gear-forming section via an internal gear, the cushion member absorbs an impact force to move the movable wall by a predetermined distance. In this case, the movable wall contacts the fixed wall so that a compression rate of the cushion member can be restricted.

Abstract: A planetary gear arrangement having at least three rotatable members with intermeshing gears and a primary torque path defined therein. At least one active friction damper is disposed between two of the planetary gear members, for example, a sun gear and a ring gear. The active damper is selectively operable to apply frictional engagement between the two members with which it is interconnected to establish a controlled secondary torque path therebetween. The active damper is effective to reduce gear lash changes between the gear members of a planetary assembly.

Abstract: A planetary gear comprising a central, rotatable input/output shaft (1a), an elastic outer ring (4) which when being elastically deformed encloses and presses at least three planet wheels (6, 12) in the form of rollers radially against a centrally mounted sun shaft (2), which extends axially in alignment with the input/output shaft (1a). The planet wheels (6, 12) have central holes and are rotatably mounted on stays (7, 13), the centre lines of the stays (7, 13) being parallel with the sun shaft (2). At least two (12) of the planet wheels have substantially coinciding centres with the stays (13) associated with the planet wheels (12), while the planet wheel or other planet wheels (6) as well as the associated stay or stays (7) is/are constructed such that the centre lines of the stays are positioned a given distance closer to the sun wheel (2) than the axes of the planet wheels (6) when the planet wheels (6) engage the sun shaft (2).

Abstract: The invention relates to a planetary gear with little play that comprises, for one stage of reduction each, at least one sun wheel, an elastically deformable internal geared wheel, planet wheels that are rotatably received by a planetary carrier and that act on the one hand on the sun wheel and on the other hand on the internal geared wheel, thereby transmitting power, and a housing. The aim of the invention is to provide a planetary gear that is simple in design and reliable in operation. To this end, the elastically deformable internal geared wheel is configured as an outer wall zone of the housing.

Abstract: There is provided a planetary reduction gear 10 between a gas turbine 1 and a generator 5. The planetary reduction gear includes elastic deformation unit 12 on an output side, and for the elastic deformation unit, a strain energy within an elastic limit is set to be larger than a fluctuation torque energy of the generator of a momentary voltage drop time. The elastic deformation unit 12 includes an elastic member which elastically connects an output shaft 10a of the planetary reduction gear to an outer ring 10b. Thereby, when an excessive torque is generated in the generator by a momentary voltage drop, service interruption, and the like for a short time, it is possible to maintain the operation of a power generation facility, and secure a power supply of an important load, and an installation length is shortened and the facility can be downsized.

Abstract: In a traction roller type reduction gear (3a) disposed in the middle of a passage for transmitting power from a starter motor to the rotating shaft of an engine, a relation Pmean>{(Umax)1/2}/9 or Pmean>0.3[GPa] is satisfied, assuming the maximum circumferential speed of a drive side cylindrical surface (42) under use state is Umax [m/sec], and the average contact pressure at the radially outer side contact area (50b) of a movable roller (25) based on the preload of a compression coil spring (45) is Pmean [Gpa]. According to the arrangement, transmission efficiency is ensured by preventing slip at both radially inner and outer side contact areas (49a, 49b, 50a, 50b) even during light load operation and damage such as seizure can be prevented.

Abstract: A mechanical paradox planetary speed reducer has an input shaft, a plurality of plantet gears, a pair of fixed internal sun gears, and a movable internal sun gear. The fixed internal sun gears are spaced from each other in the axial direction of the input shaft, and the movable internal sun gear is disposed between the fixed internal sun gears. The movable internal sun gear has outer flanges on opposite ends thereof and fitted over the ends of the fixed internal sun gears in sliding contact therewith, holding the movable internal sun gear and the fixed internal sun gears in concentric relation to each other.

Abstract: A hydrodynamic coupling device comprises a casing arrangement and a turbine rotor which can be rotated about an axis of rotation (A) in the casing arrangement. The turbine rotor has a turbine rotor shell which supports a plurality of turbine rotor blades, and a turbine rotor hub which is coupled or can be coupled to a drive element for joint rotation. A lock-up clutch arrangement is provided for the optional production of a torque transmission connection between the turbine rotor and the casing arrangement, and a torsional vibration damper arrangement couples the turbine rotor for torque transmission to a coupling element of the lock-up clutch arrangement. A positive drive arrangement is provided on the torsional vibration damper arrangement, which positive drive arrangement is in drive engagement for torque transmission with a mating positive drive arrangement on the turbine rotor. The mating positive drive arrangement is formed integrally on the turbine rotor shell.