Abstract: A wheel drive assembly includes a rotatable spindle-carrier affixed to a wheel. A fixed housing includes an output ring gear and the spindle-carrier resides generally within the housing. An output sun gear driven by an input carrier drives output planetary gears which, in turn, interengage the output ring gear driving and rotating the spindle-carrier. A fixed drive end housing includes an input ring gear and houses a noise reducing radially floating input carrier and a plurality of input planet gears rotatably mounted in the input carrier. The input sun gear is driven by an electric motor and drives the plurality of input planet gears which mesh with the input ring gear causing rotation of the input carrier about its true center. The input carrier is partially nested within the spindle-carrier and the motor is partially nested within the fixed drive end housing.

Abstract: A compact modular assembly of a geared power train (100) and generator (400) suitable for use in a wind turbine application to maximize a step-up ratio between an input and output within a limited radial space. The power train is configured as a hybricyclic split-compound planetary gearing system with a grounded closed carrier flex pin system in a high torque stage (A), and an open carrier flex pin system in a low torque stage (B), having a step up ratio of approximately 30:1. To facilitate modular assembly and disassembly of the power train and generator, each component is mounted independently to opposite sides of a common support structure (500) anchored to a bedplate (502).

Abstract: The invention relates to devices including rotary units and rotary mechanisms that are suitable for use in numerous applications. Rotary units typically include rotational components that are configured to rotate. In some embodiments, for example, multiple rotary units are assembled in rotary mechanisms such that neighboring pairs of rotational components counter-rotate or contra-rotate relative to one another during operation of the rotary mechanisms. Rotational components generally include one or more implements that are structured to perform or effect one or more types of work as the rotational components rotate relative to one another in a given rotary mechanism. In certain embodiments, implements are configured to rotate and/or to effect the movement of other components as rotational components rotate.

Abstract: A dump truck has a flange on an inner peripheral wall of a spindle. The flange arranges a support bearing for supporting a shaft. The spindle is formed of a chassis-side member and a reduction gear unit-side member joined together by welding. The chassis-side member is fixed on a chassis of the dump truck, and the reduction gear unit-side member is located closer to a side of the reduction gear unit than the chassis-side member. The reduction gear unit-side member is located on a side of an outer periphery of the shaft portion, where a distance to a coupling between the motor and shaft and a distance to a first sun gear between the reduction gear unit and shaft are equal to each other. On an inner peripheral wall of the reduction gear unit-side member, the flange is cast together with the reduction gear unit-side member.

Abstract: A generator drive apparatus includes: a rotor shaft having a generally annular open end; a gear unit including a stationary member and a plurality of intermeshed gears, the gear unit disposed at least partially within the open end and drivingly coupled to the rotor shaft; and an electric power generator mounted to the stationary member and drivingly coupled to the gear set.

Abstract: An electric drive unit for a vehicle wheel includes an electric motor that powers a planetary drive having a first stage gear set and a second stage gear set. Each of the first and second stage gear sets includes a sun gear that is driven by a motor output shaft. Each of the first and second stage gear sets also includes a plurality of planet gears that are in meshing engagement with a respective one of the sun gears. The first and second stage gear sets share a common ring gear. A planet carrier of the second stage gear set provides driving output to a wheel shaft that drives the vehicle wheel.

Abstract: A compound planetary gear transmission unit includes a second stage with axially staggered planets.

Abstract: A reduction gear having a planetary gear set for reducing the output rotation speed of a motor, a counter gear set for reducing the output rotation speed of the planetary gear set, and a planetary gear set for reducing the output rotation speed of the counter gear set. The output shaft and input shaft that are on the same axis and belong to the planetary gear set are arranged in parallel with the output shaft and input shaft that are on the same axis and belong to the planetary gear set. The input shaft of the counter gear set is common to the output shaft of the planetary gear set. The output shaft of the counter gear set acts commonly as the input shaft of the planetary gear set.

Abstract: The invention relates to a wind power turbine and a gearbox for same. In wind power turbines, the incoming moment is transmitted from a hub to a gearbox via a shaft, and from the gearbox to a generator. According to the invention, the gearbox is at least partially built into the shaft and/or the shaft is at least partially embodied as a rotary gearbox housing. The resulting compact construction not only renders the wind power turbine more compact and therefore significantly more economical and lighter, but in the event of a suitable design and use of a coupling gearbox, the moment generated can be transmitted in a highly secure manner.

Abstract: Aspects of a method and system for detecting Bluetooth signals utilizing a wideband receiver are provided. In this regard, a frequency band may be scanned by receiving signals on each of a plurality of sub-bands for an amount of time, the energy received in each band may be compared to a threshold, and whether each sub-band comprises a Bluetooth transmission may be determined based on a FFT. Additionally, the FFT may enable determining on which Bluetooth channel a detected transmission occurred. A FFT may be performed when energy detected in a sub-band is higher than a threshold. The sub-bands may each be a WLAN channel. A type of a detected Bluetooth transmission may be determined based on a number of scans in which the transmission is detected. Each sub-band may be received for less than or equal to 68 ?s divided by the number of sub-bands.

Abstract: A cylindrical, high speed change ratio type peed change gear mechanism is disclosed to include a driving wheel rotatable by a crank handle, a first rotating wheel coupled to the driving wheel for synchronous rotation at the same speed and having pivoted small gears spaced around the border and meshed within a first gear ring, a second rotating wheel coupled to the small gears of the first rotating wheel for rotation with the small gears of the first rotating wheel and having pivoted small gears spaced around the border and meshed within a second gear ring, a third rotating wheel coupled to the small gears of the second rotating wheel for rotation with the small gears of the second rotating wheel and having pivoted small gears spaced around the border and meshed with a pinion of a power generating device, and a fixed third gear ring meshed with the small gears of the third rotating wheel.

Abstract: A tip turbine engine (10) provides an axial compressor rotor (46) that is counter-rotated relative to a fan (24). A planetary gearset (90) couples rotation of a fan (46) to an axial compressor rotor (46), such that the axial compressor rotor (46) is driven by rotation of the fan in a rotational direction opposite that of the fan. By counter-rotating the axial compressor rotor, a final stage of compressor vanes (54) between the final stage of compressor blades (52) and inlets (66) to the hollow fan blades (28) of the fan are eliminated. As a result, the length of the axial compressor (22) and the overall length of the tip turbine engine (10) are decreased.

Abstract: The present invention provides for a rotary fluid-sealing structure for a harsh environment which reduces the PV pressure (×velocity) that a sealing system may be exposed through the use of a rotary speed reducing planetary gear system. The system may have multiple stages with the amount of velocity reduction produced by the system being determined by the number of stages and the planetary gear ratios. Several alternatives are presented for the sealing under extreme conditions such as found in the interface between a wash-pipe and a rotary drilling string in a drilling rig.

Abstract: A reduction gear (49) for a walking assistance system is provided that includes first to third planetary gear mechanisms (P1 to P3) between an input shaft (Si) connected to a motor (48) and an output shaft (So), the second planetary gear mechanism (P2) being disposed radially outside the first planetary gear mechanism (P1) connected to the input shaft (Si), and the third planetary gear mechanism (P3) being disposed outside, in the direction of an axis L, the first planetary gear mechanism (P1). It is therefore possible, while reducing the speed of rotation of the input shaft (Si) in three stages by the first to the third planetary gear mechanisms (P1 to P3) and transmitting the rotation to the output shaft (So), to reduce the thickness of the reduction gear (49) compared with a case in which the first to the third planetary gear mechanisms (P1 to P3) are disposed so as to be stacked in the direction of the axis (L), thereby improving the appearance when a user is fitted with the walking assistance system.

Abstract: A dual planetary gear transmission having two planetary gear sets rotatably mounted on a common grounded axle wherein sun gears span both planetary gear sets providing a system for gear movement to be transferred between both gear sets whereby additional input allows modification to a differential relationship between the main transmission members. The disclosed transmission has many applications, including integration within a weight-generating device.

Abstract: A planetary transmission includes a plurality of planetary gearsets. The planetary gearsets have a lubrication system comprised of pinion pins secured in side plates and central passages located within the pinion pins. The central passages or cavities have radially outwardly disposed fluid passages, which supply fluid lubrication to support bearings for the pinion pins of the respective planetary gearsets. Lubrication fluid is communicated into the cavities when thrust loads are imposed on the planetary gearsets and the thrust bearings disposed between adjacent planetary gearsets reduces the flow area for the lubrication fluid.

Abstract: The system includes at least two power disc elements, each mounted for rotation on a central shaft which is typically fixed. The first power disc element includes a first peripheral gear portion by which the first power disc element may be turned by an input assembly. The first power disc element has a second gear portion which may have a substantially smaller diameter than the outside diameter thereof. A second power disc portion has a plurality of outer drive gears mounted for rotation to mate with the second peripheral gear portion on the first power disc element. A central gear, which may be substantially larger than the outer drive gears, is positioned to mate with the outer drive gear in the the second power disc element. The second power disc element drives an output assembly.

Abstract: A final drive assembly for transmitting torque between an input and an output includes a compound gear assembly. The compound gear assembly includes at least three planetary gear trains and is in driving engagement with the input. Each planetary gear train of the at least three planetary gear trains is adapted to coactively and drivingly engage the output, wherein torque generated by the input is distributed to the output by each of the planetary gear trains.

Abstract: A variable biasing differential provides an adjustable torque bias between two outputs. An input shaft provides drive torque to a carrier which receives a plurality of stub shafts and a like plurality of planet gears. A first set of planet gears drives a first sun gear and first output and a second set of planet gears, which, in turn, drives additional planet gears which drive a second sun gear and second output. Secured to both ends of the carrier are first and second ring gears which each mesh with an eccentric gear which in turn includes an eccentric second ring gear which meshes with an internal gear disposed about the first and second outputs. These gears are coupled to respective first and second friction clutches which can be independently activated to adjust the torque bias of the differential.

Abstract: A traction drive has inner and outer rings and drive and idler rollers organized in two rows between the rings, with the drive rollers being in an inner row and the idler rollers being in an outer row. The drive rollers contact the inner ring and the idler rollers contact the outer ring. At least one idler roller exists for every drive roller, with the idler roller and its drive roller being in contact between the two rings. Moreover, each idler roller is offset slightly circumferentially with respect to its drive roller such that the idler roller occupies a convergent space between its drive roller and the outer ring. The drive rollers rotate within an inner carrier, while the idler rollers rotate within an outer carrier and one of the carriers can rotate slightly relative to the other carrier. Each drive roller may be coupled with an electric motor.

Abstract: A speed reduction gear train comprising a sun gear, an annular gear, and planet gears meshing with the sun gear and the annular gear and mounted in a cage having axial housings between pairs of adjacent planet gears. The cage is connected to a cage carrier having axial arms received in the housings by radial pins disposed in the midplane of the cage by means of spherical finger connections allowing the cage carrier to tilt and to move axially relative to the cage.

Abstract: A planetary gear unit in an electrically operated brake transmits a brake applying rotational movement with reduced speed to the brake. The unit has two stages with an ingoing first shaft, a second shaft and an outgoing gear as well as planet wheels, sun wheel gearings and housing gearings. The first and second shafts are journalled in relation to each other, and the outgoing gear is journalled on the second shaft.

Abstract: The system includes at least two power disc elements, each mounted for rotation on a central shaft which is typically fixed. The first power disc element includes a first peripheral gear portion at the rim of the power disc element by which the first power disc element is turned. A first system gear mounted on a first system shaft mates with the first peripheral gear portion with first system shaft being offset from the central shaft. The first power disc element also has a second peripheral gear portion in the vicinity of the rim extending forwardly of the first power disc element. A second power disc element has a plurality of outer drive gears mounted for rotation to a rearwardly facing surface, positioned to mate with the second peripheral gear portion on the first power disc element. A central gear is fixed to the central shaft and mates with the outer drive gears on the second power disc element.

Abstract: A joint may have a multi-stage planetary gearbox between the stationary housing and the rotary housing. To accommodate different gear ratios, the rotary housing may be joined to the stationary housing by a releasable attachment. This allows portions of the planetary gearbox to be replaced so that, for instance, the last stage may be chosen as either a simple or compound differential planetary stage. To allow for different capacities, a quotient of a sum of all teeth of a sun gear of a stage and of the ring gear with which the planetary gears of the stage mesh to both the number three and the number four yields an integer. In this way, the stage may be provided with either three or four planetary gears. The gearbox may have a ring gear common to a plurality of simple planetary stages. Where the final stage is a simple planetary stage, the carrier may be provided with a flange extending around, and bearing mounted to, the common ring gear.

Abstract: A geared motor 101 comprising a reduction gear unit 102 of oscillating internal meshing planetary gear structure type and a motor unit 103 coupled to each other, the reduction gear unit 102 having a first shaft 111 and a second shaft 112 located on its center axis L, external gears 115a and 115b being fitted on the outer periphery of the first shaft so as to be capable of oscillating rotations, an internal gear 120 with which the external gears mesh internally being provided concentrically with the first shaft, the second shaft being coupled to the external gears via means 117 for extracting the rotational components of the external gears. A simple planetary roller mechanism 202 for transmitting rotational power by means of the friction between rollers is interposed between the reduction gear unit and the motor unit to reduce the vibration and noise levels greatly.

Abstract: The present invention relates to a drum motor (1) comprising a driving member (7), a gear transmission and a driven member, said gear transmission being constructed as a plurality of planet transmissions (18, 20, 22) in the form of sun wheels (130) and planet wheels (144) arranged successively in the interior of an internally toothed rim (100), said driven member being in the form of a cylindrical drum (3) which contains the driving member (7) and the toothed rim (100), and which rotates about a longitudinal axis A. The invention is characterized in that the toothed rim (100) is formed by at least two juxtaposed ring-shaped segments (110, 115, 125) which provide a separate annulus for each planet transmission, and that member (120, 122, 200) are provided to secure the ring-shaped segments (110, 115, 125) against mutual rotation about the longitudinal axis A.

Abstract: A bi-power transmission mechanism. The transmission mechanism includes a first power unit, a second power unit, and a planetary gear train. The first power unit includes a motor, an input shaft, a worm, and a worm gear driven by the motor through the worm to rotate the input shaft. The planetary gear train includes a center gear synchronously rotated with the input shaft of the first power unit, a rack, planet gears equiangularly supported on the rack and meshed with the center gear, and an output shaft fixedly mounted on the rack for synchronous rotation with the rack and the input shaft of the first power unit. The second power unit is operated to rotate the planet gears through an internal gear via a worm and a worm gear so as to further rotate the output shaft of the planetary gear train when the first power unit fails to function well.

Abstract: A bowl mill transmission which has a high overall transmission ratio and a high output torque, is of compact construction and is simple to assemble, is equipped with a vertically arranged bevel-gear stage for power input and a multi-stage epicyclic transmission arrangement for power output into a thrust ring of the bowl mill.

Abstract: The electric food processor has a housing in which there is disposed an electric motor with a motor shaft. The motor shaft, via a gear mechanism, drives three or more concentric output drives at different rotational speeds. The common axis of rotation of the output drives is spaced a distance from the motor shaft. Working tools are selectively coupled to the output drives and the working tools rotate in a working container which is placed on the housing. In order to expand the possible uses of the food processor, the fastest output drive rotates at a speed that is suitable for a mixing tool, and the gear mechanism has at least two sets of input gear teeth that are rotatably mounted independently of each other, so that the fastest output drive can be driven out of direct engagement with the slower output drives.

Abstract: An actuator for a speed control device is provided. The actuator includes a motor, first and second planetary gear assemblies, and an output shaft. The motor drives a shaft on which a first pinion is mounted. The first pinion, in combination with an internal gear, causes a first planetary gear to rotate which in turn causes rotation in a first carrier supporting the first planetary gear. Rotation of the first carrier causes a second pinion disposed on an opposite side of the first carrier to rotate. The second pinion, in combination with the above-mentioned internal gear, causes a second planetary gear to rotate which in turn causes rotation in a second carrier supporting the second planetary gear. Rotation of the second carrier is transmitted to the output shaft directly or through an intermediate clutch.

Abstract: A two-piece planetary hub and output shaft for use in a planetary reduction gear drive assembly for a raise drill having a drive motor and a drive train path including first, second and third reduction gearing driving the planetary hub and output shaft. The hub and shaft are formed as two major pieces, an upper hub and a lower output shaft which are rigidly interconnected by three planet gear shafts each engaging a hole in said hub and a recess in said lower output shaft. Such interconnection is suitably by taper lock bushing assemblies locking the shafts to both said hub and said shaft. Transfer of torque occurs essentially through the planet shafts and the hub, and transfer of load occurs essentially through the output shaft.

Abstract: A compact bicoupled contrarotating epicyclic gear is provided. The gear iudes a rotatable input shaft for providing an input-torque, a first-stage epicyclic gear, a second-stage epicyclic gear mutually drivably coupled to and in axial alignment with the first epicyclic gear, an outer-output shaft for conveying an outer-output-torque in response to the input-torque, and an inner-output shaft coaxial with the outer-output shaft for conveying an inner-output-torque in response to the input-torque. The bicoupled contrarotating epicyclic gear further includes at least one interstage torque carrier rotatably connecting the first and second epicyclic gears in series such that the first and second sun gears, the first and second planet carriers, and the first and second ring gears rotate and convey useful torque in response to the input-torque.

Abstract: A hydromechanical drive assembly having a hydrostatic axial piston motor with a housing and a swash plate and a cylindrical drum located in the housing. A transmission having a housing is located downstream of and coaxial with the axial piston motor and a planetary gear is located in the transmission. A transmission-side driven shaft extends out of each end of the drive assembly. The cylindrical drum and the driven shaft have the same axis of rotation. Spring-actuated hydraulically releasable devices are located in the housing to non-rotatably connect the cylindrical drum of the axial piston motor directly to a ring gear which is non-rotatably connected to the driven shaft.

Abstract: An actuator module for inducing the relative motion of robot members joined in a robot joint includes a Ferguson epicyclic gear train, integral motor and integrated control means. The gear train comprises a plurality of base gears connected to the robot members and a plurality of planet gear carriers, each planet gear carrier having a plurality of planet gears rotatably mounted therein. A motor integrated with certain gear train components induces the rotation of the planet gear carriers about or within the base gears. Because of the Ferguson paradox, this induces the motion of base gears connected to one robot member relative to those connected to the other robot member, which in turn causes the relative motion of the robot members. The actuator module can be configured as dual substantially symmetric systems and may comprise multiple stages of epicyclic gearing.

Abstract: Planetary reduction gear mounted in the tube of a tubular motor. The reduction gear has at least one input stage and one output stage and a satellite holder secured to the output shaft of the reduction gear. The ring gear of the reduction gear has two parts rotationally immobilized in the tube and one part meshes with the satellites of the input stage and the other part meshes with the satellites of the output stage. The two ring gear parts are connected to one another by a connection component interlocked axially in each of the two ring gear parts and fixed to the tube. This allows the ring gear to be immobilized more completely; the diameter of the output shaft may be greater and the reduction gear may be designed ion a modular form.

Abstract: A two-stage planetary gear transmission having a first-stage planetary gear transmission and a second-stage planetary gear transmission is disclosed, wherein the carrier of the second-stage planetary gear transmission comprises first and second carrier parts integrally connected with each other. A hollow pinion shaft formed thereon with the sun gear of the second stage is rotationally supported on the first carrier part via a deep-channel ball bearing in a cantilevered condition. A carrier of the first stage for supporting planetary gears of the first stage is integrally formed on the end of the hollow pinion shaft of the second stage. A lubricant layer of about 15 .mu.m to about 20 .mu.m in width is formed between an inner race member of a planetary bearing and a planetary shaft for each of the planetary gears of the second stage.

Abstract: A pneumatic power tool having a rotary driven output spindle defining an axis, an air motor having an output shaft axially aligned with the output spindle, transmission means connecting the output shaft and the spindle, and control means for operating the air motor. Incorporated in the transmission means is a two speed gear system to provide a first drive having a lower torque output and a second gear reduced having a higher torque output and a lower rotary speed output relative to the first drive. The two speed gear system also includes a spindle assembly which is axially translatable, biasing means for biasing the spindle assembly to the first drive position, and a collar rotatable about the axis and including a follower cooperative between the spindle assembly and the collar to effect axial movement of the spindle assembly between the first and second drive positions.

Abstract: A final drive assembly for transferring power from a vehicle engine and transmission to a vehicle propulsion unit, such as an endless track assembly, has a power input shaft coupled to first and second planetary gear assemblies. The second planetary gear assembly is coupled to a torque tube portion of a sprocket support member for rotating a drive sprocket. The power input shaft, first and second planetary gear assemblies, and the torque tube portion are substantially co-axial, and the first and second planetary gears assemblies are positioned inwardly of the sprocket support member. By positioning the planetary assemblies inwardly of the sprocket support member, additional gears, hubs, splines, and shafts are eliminated and the planetary assemblies are less susceptible to damage. The planetary gear assemblies are substantially free-floating which eliminates the cost and complexity of additional bearing supports.

Abstract: In an electric motor-driven positioning element for steering the rear wheels of a passenger car, a rotor of an electric motor is mounted on a ball nut which is adapted to effect axial displacement of a ball screw. The ball nut supports on a flange the shafts of pinions of a planetary gear unit, with the sun wheel of that planetary gear unit being driven by the rotor of the electric motor. The housing accommodates an electro-magnetic dog clutch which serves to block the ball nut during the time the electric motor is not energized.

Abstract: A planetary gear train comprising at least two planetary gear sets arranged coaxially behind, and drivingly connected with, one another, of which one planetary gear set (5) contains fewer, and the other planetary set (17) more, planet gears (7) and the planet gears and their bearings in both planetary gear sets are identically constructed. The pitch diameter of the sun gear (16) and the pitch diameter of the ring bear (18) of the other planetary gear set (17) are larger than in one planetary gear set (5), and both sets (5, 17) are constructed for approximately the same line loading of the sun gears, planet gears, and ring gears (force per face width in the contact line of two teeth which bear against each other). Thus, a gear unit is obtained which has a smaller cross section with up to 50% savings in weight.