Abstract: A complex planetary assembly includes an input, an output, a ring gear, a first stage planetary assembly and a second stage planetary assembly. The first stage planetary assembly includes a first sun gear, a first carrier including a first plurality of pins extending therefrom, and a first plurality of planet gears. Each of the first plurality of planet gears is rotatably coupled to one of the first plurality of pins. The second stage planetary assembly includes a second sun gear, a second carrier including a second plurality of pins extending therefrom, and a second plurality of planet gears. Each of the second plurality of planet gears is rotatably coupled to one of the second plurality of pins. At each of the first or second plurality of pins on the first or second carrier, at least two planet gears of the first or second plurality of planet gears are coupled and coaxially arranged adjacent to one another.

Abstract: A gear unit for a powertrain of a motor vehicle includes a drive shaft, a driven shaft, first and second planetary gearsets and first and second shifting elements. The first shifting element drivingly connects the drive shaft to an input of the first planetary gearset, and the second shifting element drivingly connects the drive shaft to an input of the second planetary gearset. An output element of the second planetary gearset is connected to the input of the first planetary gearset to be fixed with respect to rotation relative to it, and an output of the first planetary gearset is at least indirectly drivingly connected to the driven shaft. A shared element is fixed with respect to relative rotation and, with an inner toothing, forms a ring gear of the first planetary gearset and, with an outer toothing, forms a sun gear of the second planetary gearset.

Abstract: Driving modules, motion assistance apparatuses including at least one of the driving modules, and methods of controlling at least one of the motion assistance apparatuses may be provided. For example, a driving module including a driving source on one side of a user and configured to transmit power, an input side rotary body coupled to the driving source and configured to rotate, first and second decelerators configured to operate using the power respectively received from the driving source through the input side rotary body, and a first stopper and a second stopper configured to selectively enable or disable a transmission of the power between the input side rotary body and respective output terminals of the first and second decelerators may be provided.

Abstract: A planetary gear train of an automatic transmission for a vehicle may include: a first shaft; a second parallel shaft; a first planetary gear set on the first shaft including a first element selectively connected to the first shaft, a second element selectively connected to the first shaft or a transmission housing, and a third output element; a second planetary gear set on the second shaft, and including a fourth element selectively connected to the first shaft, connected to the first element, and selectively connected to the transmission housing, a fifth element connected to the third element and directly connected to an output gear, and a sixth element selectively connected to the first shaft; four transfer gears; and frictional elements including clutches selectively connecting the first, second, fourth, and sixth elements with the first shaft and brakes selectively connecting the second and fourth elements with the transmission housing.

Abstract: A multi-stage automatic transmission in which planet gear mechanisms, external gears and friction elements are combined in order to realize nine forward gears and one rearward gear having excellent operating conditions for friction elements and superior shift range ratios, thereby achieving excellent power performance and fuel efficiency.

Abstract: An automatic transmission includes an input shaft, an output member, a first planetary gear system, a second planetary gear system, a third planetary gear system, a fourth planetary gear system, and an engagement mechanism. The input shaft is configured to be rotated with power of a driving source relative to the transmission case. The output member is to output rotation of the input shaft using multiple gear-shifting. The multiple gear-shifting is provided by setting at least three of first to third clutches and first to third brakes in a connection state.

Abstract: Assuming that N1 and N2 are the respective numbers of pinion rollers (23, 63); ?1 is the ratio between the inner diameter of a ring roller (22) and the outer diameter of a sun roller (21); and ?2 is the ratio between the inner diameter of a ring roller (62) and the outer diameter of a sun roller (61); and it holds that N1=3, and (?1+1)×(?2+1)?24+16×20.5, in the case where N2=3, then it holds that ?1?0.102×(?1+1)×(?2+1)+1.196, and ?1?min[0.204×(?1+1)×(?2+1)+3.123, 7+4×30.5], and in the case where N2=4, then it holds that ?1?(2?20.5)×(?1+1)×(p2+1)/4?1, and ?1?min[0.185×(?1+1)×(?2+1)+1.320, 7+4×30.5].

Abstract: Three methods of fabricating an intermediate, center or combination gear for a stacked planetary gear assembly are presented. A first method comprehends forming male splines on the outer surface of the inner (ring) gear and female splines on the inner surface of the outer (sun) gear. The gears are then heat treated and assembled. A second method comprehends broaching internal splines in the outer (sun) gear as well as end milling, broaching or polygon turning face splines on one end of the outer gear and an opposing, adjacent end of the inner (ring) gear. A third method includes fabricating and heat treating the inner and outer gears. A small area of the hardened case is then removed by, for example, machining. The gears are mated, heated rapidly by a pulse of electric current and upset in the heated region.

Abstract: A power split gearbox (1) has: a driveshaft (10), a plurality of identically shaped first planet shafts (20) rotatably arranged mounted around the driveshaft, wherein a first planet toothing and a second planet toothing are provided on the first planet shafts, wherein the first planet toothings are in mesh with the teeth of the drive toothing, a plurality of identically shaped second planet shafts (30) which are each arranged so as to be rotatably mounted on the radially outer side around the first planet shafts, wherein the second planet shafts have in each instance a third planet toothing and, a fourth planet toothing, and wherein two of the third planet toothings are in mesh with the teeth of one of the second planet toothings, and a central wheel (40) in mesh with the teeth of the fourth planet toothings.

Abstract: A transmission has an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Two of the four planetary gear sets are stacked. Two of the planetary gear sets include first, second and third members. The two planetary gear sets that are stacked form a planetary gear set assembly that includes a first, second, third and fourth member. The torque transmitting devices include clutches and brakes.

Abstract: A motor vehicle multi-stage planetary transmission which has a housing that accommodates four planetary gear sets (P1, P2, P3, P4), shafts (2-9), three clutches (K1, K2, K3) and three brakes (B1, B2, B3) whose selective actuation implements various transmission ratios between drive and output shafts. The carriers of gear sets (P1, P2) are connected by shaft (4), the ring gear of gear set (P2) can be fixed to the housing, via shaft (5), by actuating brake (B1). A ring gear of gear set (P1) and a sun gear of gear set (P2) are coupled by shaft (6) which can be connected, via clutch (K1), to the drive shaft. A sun gear of gear set (P1) can be fixed, via brake (B2), to the housing and can be coupled, by clutch (K2), to drive shaft. The first and second clutches (K1, K2) are startup elements which initiate startup procedures.

Abstract: A transmission system including a housing; a rotor supported by the housing and rotably mounted in the housing. The rotor carrying a hub, the rotor being supported in the housing by an outer tapered roller veering toward the rotor hub and an inner tapered roller bearing away from the rotor hub. The rotor having a larger diameter at the outer bearing that at the inner tapered bearing; and a single first stage compound differential planetary including an input sun gear driven by the rotor and a plurality of free planets. The single first stage compound differential planetary including an inner annular gear fixed to the rotor shaft, the compound differential planetary gear meshing the plurality of free planets with the fixed annular gears on one end and with output ring gears on the opposite end with two attached stiff rings.

Abstract: A planetary gearbox, for an automatic transmission of a motor vehicle, comprising two stages, each provided with a sun gear, a ring gear and interposed planetary gears. The ring gear of the first planetary stage also forms the sun gear of the second stage, and the planetary gears of both stages are guided by a common planet carrier, produced from a casting material, which accommodates the planetary gears of the first stage at an axial offset position to the planetary gears of the second stage. The planet carrier is designed as one-piece such that pockets are respectively disposed in the planet carrier for receiving the planetary gears of the first stage at an offset angle, in the circumferential direction, to the pockets for receiving the planetary gears of the second stage, so that it is possible to form the pockets during casting using slides.

Abstract: A gear set arrangement for a planetary transmission comprising at least first and second simple planetary gear sets, each having sun and ring gears and a carrier supporting planetary gears. The gear sets are coaxially nested with the first gear set being radially within the sun gear of the second gear set in a common radial plane or radial planes which are only slightly axially offset. The ring gear of the inner first gear set and the sun gear of the outer second gear set, and the carriers of the two gear sets, are coupled in a fixed manner. To avoid forced movement of the gears, only one of the sun gear, the ring gear or the carrier, of each of the first and the second gear sets is radially supported substantially free of radial play on a centrally disposed transmission shaft or with respect to a centered supported component.

Abstract: The present invention relates to a power split transmission for a motor vehicle, having a mechanical and a hydrostatic power branch (3, 4) disposed parallel to each other and contacting a mutual drive shaft (1), wherein the hydrostatic power branch (4) consists of a hydro motor (6) coupled to a hydro pump (5) and is connected to the drive shaft (1) via a gear stage (7), wherein the branched power from the mechanical and hydrostatic power branch (3, 4) can be combined into a gear drive (13) disposed on the face side, said gear drive being subsequently connected to a drive shaft (2), wherein the mechanical power branch (3) further consists of two planetary gears (8, 9) having sun gears (10, 12), planetary gears (16, 17), and hollow gears (21, 22), wherein the sun gear (10) of the first planetary gear transmission (8) is placed directly on the drive shaft (1) while the sun gear (12) of the second planetary gear transmission (9) is in contact with the gear drive (13) via a sun shaft (11), and wherein the planetar

Abstract: A drive device includes: an input shaft connected to an engine; a first motor-generator; a second motor-generator; a planetary gear unit including three rotating elements; an output gear connected to the planetary gear unit; an output shaft that transmits rotation of the output gear to a driving wheel; and a control device that controls at least one of the first and second motor-generator. The output gear, the planetary gear unit, and the first motor-generator are coaxial with the input shaft. The planetary gear unit is provided radially inside the first motor-generator and is provided at the same position as the first motor-generator in the axial direction. The second motor-generator is provided on an axis different from the input shaft and the output shaft axes. The control device is provided on the side of the output gear, the planetary gear unit, and the first motor-generator that is opposite the input shaft.

Abstract: A torque distributing drive mechanism is provided for transmitting torque to at least a first and a second output member. In addition, a motorized vehicle is provided that is equipped with such a torque distributing device. The device includes, but is not limited to a planetary gear set coupled to the first output member and coupled to the second output member, and an auxiliary drive member coupled to a carrier of the planetary gear set for inducting counter-directed offset torques to the first and second output member.

Abstract: A transmission has an input member, an output member, two stacked planetary gear sets, a third planetary gear set, a plurality of coupling members and a plurality of torque transmitting devices. The stacked planetary gear sets have a first, second, third, fourth and fifth member and the third planetary gear set has a first, second and third member. The torque transmitting devices include clutches and brakes.

Abstract: An automatic transmission includes an input shaft, an output shaft and four planetary gear assemblies each having a first, a second and a third element. The automatic transmission includes six fixed or rigid interconnections: one from a third element of the second planetary gear assembly to a second element of the fourth planetary gear assembly, one from a second element of the third planetary gear assembly to the second element of the fourth planetary gear assembly, one from a third element of the first planetary gear assembly to a second element of the second planetary gear assembly, one from a third element of the third planetary gear assembly to a first element of the fourth planetary gear assembly and one from an element of the second planetary gear assembly to an element of the first planetary gear assembly. The automatic transmission also includes four clutches and three brakes which may be selectively engaged to provide nine, ten or eleven speed transmission operation.

Abstract: A transmission is provided having an input member, an output member, two planetary gear sets, another two planetary gear sets that may be stacked or nested to form a planetary gear set assembly, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The stacked or nested planetary gear set assembly has a carrier member for rotatably supporting a first plurality of pinion gears and a second plurality of pinion gears, a ring gear and a common member. The torque transmitting devices include clutches and brakes.

Abstract: A transmission with forward and reverse gears comprising planetary gearsets, shafts and shift elements. The sun gear of gearset (P1) couples shaft (5) that is connectable, via brake (05), to housing (G). The carriers of gearsets (P1, P2) couple shaft (8) which is connectable, via clutch (18), to drive input shaft (1). Input shaft (1) is connectable, via clutches (16, 14), respectively to shafts (6, 4). Shaft (6) couples the ring gear of gearset (P3). Shaft (4) is connectable, via brake (04), to housing (G) and couples the sun gears of gearsets (P4, P3). The ring gears of gearsets (P1, P2) couple drive output shaft (2). The carrier of gearset (P3) couples shaft (7) which couples a component connecting the ring gear of gearset (P4) and the sun gear of gearset (P2). The carrier of gearset (P4) couples shaft (3) which is connectable, via brake (03), to housing (G).

Abstract: A transmission is has an input member, an output member, two stacked planetary gear sets, a third planetary gear set, a plurality of coupling members and a plurality of torque transmitting devices. The stacked planetary gear sets have a first, second, third, fourth and fifth member and the third planetary gear set has a first, second and third member. The torque transmitting devices include clutches and brakes.

Abstract: An arrangement for planetary gearsets comprises at least simple radially inner and radially outer planetary gearsets each comprising a sun gear, a ring gear and a carrier that carries planetary gears. The two gearsets are coaxially aligned and one of the gearsets is radially nested inside the sun gear of the other gearset. The ring gear of the radially inner gearset and the sun gear of the radially outer planetary gearset are at least coupled to one another in a rotationally fixed and are connected to a common carrier by driving teeth. To achieve a simple and inexpensive production, the ring gear of the radially inner gearset and the sun gear of the radially outer gearset are first produced as separate components with different heat treatments and then the ring and the sun gear are connected together by one of a friction force locking, a form interlocking and/or positive bonding.

Abstract: A multi-speed transmission is provided that has three planetary gear sets that have a plurality of members positioned to establish only two gear planes. Six torque-transmitting mechanisms are selectively engagable in different combinations to connect different members of the planetary gear sets with an input member, an output member, a stationary member, and one another to establish seven forward speed ratios and a reverse speed ratio. One of the gear planes is established by the first and the second planetary gear sets. The second planetary gear set is positioned concentric with and radially-outward of the first planetary gear set, and the first and second planetary gear sets share a member.

Abstract: An automatic transmission includes a first planetary gearset having a first planet pinion set rotatably supported on a common carrier and drivingly engaged with a first sun gear and a first composite gear that acts both as a first ring gear and a second sun gear. A second planetary gearset includes a second planetary pinion set rotatably supported on the common carrier and drivingly engaged with a third sun gear, the first composite gear and a second composite gear that acts both as a second ring gear and a third ring gear. A third planetary gearset has a third planet pinion set rotatably supported on the common carrier and drivingly engaged with a third sun gear and the second composite gear. A series of nested clutches and multiple bakes are employed to establish six forward speed ratios and one reverse ratio using a single carrier.

Abstract: The present invention relates to a cam actuator which adopts an epicyclic reducer housed inside the eccentric cam supporting pivot, where is also provided a housing compartment for the electrical motor, whose pinion is perfectly coaxial with the axis of the epicyclic reducer and with the axis of said supporting pivot.

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: 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: Fine adjustment of the rotation speed ratio or intentional control of the rotation speed ratio is carried out, centered on a desired speed ratio, including 1:1, for the rotation speed ratio between an input shaft and an output shaft. A planetary-roller speed-increasing mechanism whose input shaft is a carrier and whose output shaft is a sun roller, a planetary-roller speed-reduction mechanism whose input shaft is a sun roller and whose output shaft is a carrier, and a worm speed-changing mechanism for rotationally driving a roller ring in contact with planetary rollers of the planetary-roller speed reduction mechanism are provided in a housing. The output shaft of the planetary-roller speed-increasing mechanism and the input shaft of the planetary-roller speed-reduction mechanism are linked.

Abstract: A geared motor includes a rotor mounted rotatably to a motor housing and having an output shaft along a rotating axis, and a stator secured to the motor housing to surround the rotor. The stator has a plurality of angularly displaced core segments with wall areas confronting magnetic pole units on the rotor, and a plurality of windings wound respectively around the core segments to create a torque so as to drive the output shaft. A planetary gear assembly includes a sun wheel mounted on the output shaft, an annulus secured to the motor housing and having an internally toothed annular surface, and a planet wheel meshing with the toothed surface and the sun wheel. A rotary member is rotated by a speed reduction drive transmitted from the planet wheel about a transmitting axis aligned with the rotating axis.

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 control system and control method for an automotive vehicle having a multiple-ratio automatic transmission having two gearsets arranged in series relationship for delivering vehicle engine power to vehicle traction wheels, each gearset being controlled using friction elements that establish multiple torque flow paths, each gearset being characterized by at least two ratios, which define an overall transmission ratio, synchronous shifting of the gearsets effecting at least one swap-upshift and at least one swap-downshift in the overall transmission ratio, the control system compensating during a swap-shift progression for dynamic interaction between the gearsets.

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 vehicle power transmission and a vehicle powertrain capable of being continuously controlled over a predetermined range of operation. The powertrain includes two power units, the power transmission unit and a control device for receiving command input and determining performance parameters associated with the operation of the powertrain, an outer transmission and an inner differential gear assembly. The main transmission has two rotatable inputs, each operable connected to one power unit for receiving rotational power and operably connected to a rotatable output so that the rotational speed of the output can vary in proportion to the algebraic mean of the speeds of ratios of the two inputs. The differential gear assembly is arranged internally of the main transmission with a rotatable input operably connected to two differentially rotatable outputs. The output of the main transmission is operably connected to the input of the differential gear assembly.

Abstract: A gear train for 6-speed automatic transmissions used in vehicles includes a compound planetary gear set, realized through combining first and second planetary gear sets in a radial direction, the second simple planetary gear set being enclosed by a ring gear of the first simple planetary gear set, the ring gear able to act as a sun gear for the second simple planetary gear set, and having five operational elements. A clutch assembly is mounted between at least three of the five operational elements of the compound planetary gear set and an input shaft, and operates to select the operational elements to be input elements. A brake assembly is mounted between at least three of the five operational elements of the compound planetary gear set and a transmission housing, and operates to select the operational elements to be reaction elements.

Abstract: A gear train for a four-speed automatic transmission used in a vehicle includes an input shaft connected to an engine, an intermediate shaft disposed parallel to the input shaft, a compound planetary gear set mounted on the intermediate shaft, an output shaft aligned with the intermediate shaft and connected to the compound planetary gear set, and plurality of brakes and clutches for selecting input and output element. The compound planetary gear set includes a first simple planetary gear set receiving power from the input shaft and a second simple planetary gear set receiving power from the input shaft, the second simple planetary gear being combined with the first simple planetary gear set in a radial direction.

Abstract: A reduction gear can provide a relatively large reduction gear ratio by changing the number of gear teeth but without increasing the number of gears, thereby simplifying the structure thereof. The power transmission flow in the reduction gear occurs as follows. In one embodiment, power simultaneously flows to both a first sun gear and to a second sun gear. From the first sun gear, power flows through, in succession, a planetary gear, a ring gear, a carrier and finally to an output ring gear and output shaft. From the second sun gear, power successively flows through a first differential gear and a second differential gear to the output ring gear and the output shaft. In another embodiment, power flows, in succession, through an input sun gear, a first differential gear and a second differential gear, to simultaneously both a differential sun gear and to a differential ring gear.

Abstract: A turret head device for machine tool comprises a housing; a motor mounted on a rear surface of said housing; a first and second planetary gear mechanisms, both integrated into the housing; a turret for mounting tools; and a tool driving shaft integrated into the turret.Wherein said turret is connected with said motor through said first and second planetary gear mechanisms and the tool driving shaft is connected with the motor through the first planetary gear mechanism.

Abstract: An automatic transmission for a motor vehicle includes first and second (36, 30) gearsets, two concentrically arranged planetary gear units (44, 54), certain elements of which are continually interconnected, friction clutches (76, 78, 90), brake band (88), friction brake (92), and overrunning coupling (80). The input shaft of the transmission is adapted to drive elements of the planetary gear units through an underdrive gear set and an over drive gear set. A single gear wheel (57) is formed with the ring gear (48) of the first gear unit and the sun gear (56) of the second gear unit. Carriers (50, 60) of the gear units are connected to an output shaft (64), which drives output gearing (66, 68) and a differential mechanism (70).

Abstract: The differential unit includes an input gear for receiving power, a first arrangement of gears for delivering power to a first output gear arrangement, and a second arrangement of gears for delivering power to second and third output gear arrangements. The first arrangement of gears transmits power from the input gear for receiving power to the first output gear arrangement and an input annular ring gear of the second arrangement of gears, and operates as a differential connected between the first output gear arrangement and the input annular ring gear of the second arrangement of gears. The second arrangement of gears transmits power from the input annular ring gear to both the second and third output gear arrangements and operates as a differential connected between the second and third output gear arrangements.

Abstract: A stacked compound planetary gear train for an upgraded powertrain system for a helicopter that provides an increased reduction ratio to accommodate the increased horsepower output of the augmented powerplant system while concomitantly providing a baseline RPM output to the main rotor shaft. The stacked compound planetary gear train includes a driving sun gear, a set N of primary planetary pinions, a plurality of secondary planetary pinions, a compound drive shaft supporting each respective primary and secondary planetary pinion combination, a fixed ring gear interacting with the secondary planetary pinions, and a planetary carrier assembly disposed in rotatable combination with the compound drive shafts and operative to provide the output of the stacked compound planetary gear train to the main rotor shaft of the helicopter. The set N of primary planetary pinions includes a plurality N/2 of upper primary planetary pinions and a plurality N/2 of lower primary planetary pinions.

Abstract: An automatic transmission for a motor vehicle includes a layshaft gearset (38, 40), a planetary gearset (96), two concentrically arranged planetary gear units (44, 54), certain elements of which are continually interconnected, friction clutches (76, 78), brake band (46), friction brakes (92, 106), and overrunning coupling (80). The input shaft of the transmission is adapted to drive elements of the planetary gear units through the layshaft gearset and planetary gearset. A single gear wheel (57) is formed with the ring gear (48) of the first gear unit and the sun gear (56) of the second gear unit. Carriers (50, 60) of the gear units are connected to an output shaft (64), which drives output gearing (66, 68) and a differential mechanism (70).