Abstract: A power transmission device in an automatic transmission includes a friction tightening element (a second brake) having a drum member, and a transmission path constituent member (a third ring gear) coupled to the drum member via a coupling part extending circumferentially along the drum member, the drum member having low-rigidity parts (long holes) provided at a plurality of circumferential positions on the drum member in at least one of portions radially outside and inside the coupling part.

Abstract: A pin and carrier locking assembly is described for locking a pin and carrier in position relative to each other. The carrier has first and second opposing arms, each comprising a bore therein and the axial ends of the pin are positioned within these opposing bores of the carrier. The assembly further comprises a hollow bearing provided around and coaxially with said pin and between said first and second arms. The bearing is positioned so as to not contact the first arm of the carrier but to contact the second arm of the carrier and a washer is positioned between the bearing and the first arm of the carrier so that a first section of the washer makes a first contact area with the first arm of the carrier.

Abstract: A drive train for a wind turbine includes a rotor shaft configured to be driven by a rotor about a main axis, and a support structure including a bearing housing surrounding at least one bearing and supporting the rotor shaft for rotation about the main axis to constrain other movements of the rotor shaft. A gearbox input shaft and housing supports the gearbox input shaft for rotation while constraining other movements of the gearbox input shaft. The gearbox input shaft is coupled to the rotor shaft by an elastic coupling comprising a first coupling part rigidly connected with the rotor shaft, a second coupling part rigidly connected with the gearbox input shaft, and elastic elements positioned between the first and the second coupling part to provide a single joint between the rotor shaft and the gearbox input shaft.

Abstract: A release mechanism generates a force on a cable to operate an adjustment mechanism or the like in a seat or other device. The release mechanism includes a rotor, a housing, a spring, and a cover that attaches to the housing. The spring generates a torque, and the spring also axially biases the rotor into engagement with the cover to prevent rattling.

Abstract: An automatic transmission includes a housing, a plurality of rotatable shafts, a plurality of planetary gear sets and a plurality of shift elements. A second element of a fourth planetary gear set forms a drive shaft, and a second element of a third planetary gear set forms an output shaft. A first element of the fourth planetary gear set forms a third shaft, and a fifth shaft is constantly connected to at least two shift elements of the plurality of shift elements. A third element of the third planetary gear set forms a sixth shaft, and a seventh shaft constantly connects a first element of a second planetary gear set to a third element of the fourth planetary gear set. A second element of the second planetary gear set forms an eighth shaft.

Abstract: A transmission includes input and output shafts, a hybrid module coupled to the input shaft and a gearbox coupled to the module and output shaft. The hybrid module includes an electric motor under driven by a gearset; a disconnect clutch coupled to the gearset and selectively to the input shaft; a launch clutch coupled to the disconnect clutch and selectively to a module output; and a vibration absorber coupled with the launch clutch. The gearbox includes three gearsets and five torque transmitting devices operable to generate six forward speeds and reverse. One torque transmitting device is a clutch brake applied with a piston that reaches over a park gear, and another one is a selectable one way clutch. Two of the torque transmitting devices are rotating clutches that are radially stacked. The transmission includes an electric only mode, a hybrid mode and a battery charging mode.

Abstract: A door handle includes a casing inside which an accommodation space is provided, and a lamp unit disposed in the accommodation space. The lamp unit includes a light emission element, a circuit board on which the light emission element is mounted, and a combination member including a housing and a light guiding lens. The housing supports the circuit board, and the light guiding lens guides light emitted from the light emission element in a predetermined direction. In the door handle, a connection wire that supplies driving current to at least the light emission element is connected to the circuit board, and a portion of the connection wire is wound around a portion of the combination member.

Abstract: A powertrain comprises a planetary gearing arrangement that includes two sun gear members, two ring gear members, a single carrier member, and an interconnecting member that connects either the two sun gear members or the two ring gear members. The powertrain includes an input member and an output member, one of which is connectable to the carrier member and the other of which is connectable to the first ring gear member. A first electric machine and a second electric machine are included in the powertrain. The second electric machine is operatively connected to the first sun gear member to drive the first sun gear member, and the first electric machine is operatively connected to drive that one of the second ring gear member and the second sun gear member which is not connected to the interconnecting member. A brake is selectively engageable to hold the input member stationary.

Abstract: A planetary gear train of an automatic transmission may include: an input shaft; an output shaft; first to fourth planetary gear sets; and six control elements being disposed at a portion where one of the rotating element is selectively connected to another rotating element, or the rotating element is selectively connected to the transmission housing, wherein the input shaft is continuously connected to the second rotating element, the output shaft is continuously connected to the twelfth rotating element, the first rotating element is continuously connected to the seventh rotating element, the fourth rotating element is directly connected to the transmission housing, the fifth rotating element is continuously connected to the eleventh rotating element, and the ninth rotating element is continuously connected to the tenth rotating element.

Abstract: An elastic bushing which has novel damping by corresponding design measures and devices in order to eliminate, or greatly reduce, undesired vibrations in planetary bearings, particularly for planet gears for planetary gearboxes. This invention also relates, in particular, to the use of bushings, planet gears or planetary gearboxes of this type in machine parts and installations which transmit only low or no moments such, for example, wind turbines.

Abstract: A vehicle includes an engine, a drive axle, a multi-mode transmission, and a controller coupled to the multi-mode transmission. The multi-mode transmission includes a first gear set having a first planetary gear carrier and a second gear set having a second planetary gear carrier, the first planetary gear carrier and the second planetary gear carrier being rotatably coupled, a first motor/generator coupled to the first gear set, a second motor/generator coupled to the second gear set and selectively coupled to the engine, a brake positioned to selectively limit a rotational movement of a ring gear of the second gear set when engaged, a first clutch, and a second clutch. The controller is configured to selectively transition the multi-mode transmission between a mid range mode of operation and a high range mode of operation via an intermediate shift mode of operation.

Abstract: A vehicle includes an engine, a drive axle, a multi-mode transmission selectively coupled to the engine and the drive axle, and a controller coupled to the multi-mode transmission and configured to selectively configure the multi-mode transmission into an active neutral startup mode of operation in response to an engine start request. The multi-mode transmission includes a first gear set having a first planetary gear carrier and a second gear set having a second planetary gear carrier, a first motor/generator coupled to the first gear set, and a second motor/generator electrically coupled to the first motor/generator with a bus, coupled to the second gear set, and selectively coupled to the engine. The first gear set is coupled to the engine, and the first planetary gear carrier and the second planetary gear carrier are rotatably coupled.

Abstract: A hybrid-electric power transmission system may include: an input shaft; an output shaft; a first planetary gear set on the input shaft, and including a first rotation element connected to a first motor/generator, a second rotation element connected to the output shaft, and a third rotation element directly connected to the input shaft; a second planetary gear set on the input shaft, and including a fourth rotation element directly connected to a second motor/generator and selectively connected to the third rotation element, a fifth rotation element connected to the output shaft, and a sixth rotation element connected to a transmission housing; transfer gears; and frictional elements selectively connecting two rotation elements among three rotation elements of the second planetary gear set, selectively connecting the third rotation element to the fourth rotation element, or selectively connecting the sixth rotation element to the transmission housing.

Abstract: A multistage transmission with eight forward and one reverse gear, including an input and output shafts, planetary gearsets, gear stages, shift elements and shafts. The input shaft couples the carrier of gearset (P1) and, via clutch (15), can couple shaft (5) that couples the sun gear of gearset (P3) and, via clutch (58), can couple shaft (8) connected to the ring gear of gearset (P2). The ring gear of gearset (P1) couples shaft (6) connected to the sun gear of gearset (P2). Shaft (3) couples the sun and ring gears of respective gearsets (P1, P3) and can couple, via brake (03), the housing. The carrier of gearset (P2) couples shaft (4) gear stage (S1) which couples the output shaft. The carrier of gearset (P3) couples shaft (7) gear stage (S2) which couples the output shaft. Clutch (56) can couple shafts (5, 6).

Abstract: The present invention relates to an electric tracklaying gear and the use thereof for a self-propelled working machine, preferably for a construction or earth-moving machine or a surface mining machine such as Surface Miner, which includes an endlessly circulating track chain which can be driven by a crawler drive that is arranged inside the path of circulation of the track chain. It is proposed to associate a cooling device with a closed fluid cooling circuit to the electric motor of the crawler drive arranged in the interior of the path of circulation of the track chain. Due to the high thermal capacity of a suitable cooling fluid such as oil or water-glycol mixture small volumetric flow rates in the fluid cooling circuit and hence small conduit cross-sections are sufficient. On the other hand, due to the closed formation of the fluid cooling circuit any dust input into the crawler drive and also any generation of dust by exhaust air can be avoided.

Abstract: A multi-stage transmission with eight forward and one reverse gear, including input and output shafts, planetary gearsets, gear stages, shift elements and shafts. Input shaft couples the carrier of gearset (P1) and, via clutch (15), can couple shaft (5) that couples the ring and sun gears respectively of gearsets (P2, P3). The ring gear of gearset (P1) couples shaft (6), which couples the sun gear of gearset (P2). Shaft (3) couples the sun gear of gearset (P1), can couple the housing via brake (03), and can couple shaft (8), which couples the ring gear of gearset (P3). The carrier of gearset (P2) couples shaft (4), which can couple the output shaft (2) via gear stage (S1) and clutch (24). The carrier of gearset (P3) couples shaft (7), which couples gear stage (S2), which couples the output shaft. A clutch (46, 56 or 45) can engage to block gearset (P2).

Abstract: An automatic powershift transmission having a variable-speed transmission (2) with a transmission input shaft (4), a transmission output shaft (5). a plurality of gearsets (RS1, RS2, RS3) and a number of shifting elements (A, B, D, E, F). A starting element (3) is connected upstream of the transmission input shaft (4). The starting element (3) is in the form of a planetary gearset (6) having a ring gear (9), a planetary carrier (10) and a sun gear (12). The ring gear (9) and the planetary carrier (10) can be coupled to one another while the sun gear (12) can be locked with respect to the housing.

Abstract: A drive device (1, 20) including an electric machine (3), a first planetary gear (4), a differential (5) and an operative connection between a drive shaft (3a) of the electric machine (3) and a first planetary pinion (4a) of the first planetary gear (4), said first planetary pinion (4) engaging with the first planet wheels (4b) which engage with a stationary first ring gear (4) and which are rotationally mounted on a first planet carrier (4c) which is connected in a rotationally fixed manner to a differential cage (5a) of the differential.

Abstract: A transmission gearing arrangement produces nine forward speed ratios and one reverse speed ratio by selective engagement of three shift elements in various combinations. Some embodiment includes four simple planetary gear sets and six shift elements of which one is a brake. Another embodiment includes two axis transfer gear pairs in place of one of the planetary gear sets.

Abstract: A multistage transmission with eight forward and one reverse gear, including an input and output shafts, planetary gearsets, gear stages, shift elements and shafts. The input shaft couples the carrier of gearset (P1) and, via clutch (15), can couple shaft (5) that couples the sun gear of gearset (P3) and, via clutch (58), can couple shaft (8) connected to the ring gear of gearset (P2). The ring gear of gearset (P1) couples shaft (6) connected to the sun gear of gearset (P2). Shaft (3) couples the sun and ring gears of respective gearsets (P1, P3) and can couple, via brake (03), the housing. The carrier of gearset (P2) couples shaft (4) gear stage (S1) which couples the output shaft. The carrier of gearset (P3) couples shaft (7) gear stage (S2) which couples the output shaft. Clutch (56) can couple shafts (5, 6).

Abstract: An electrically variable drive unit having two electric motors is provided. The first electric motor is mounted along the same axis as an engine. The second electric motor is mounted along the same axis as a transmission output.

Abstract: A transmission is provided having an input member, an output member, at least four planetary gear sets, 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 torque transmitting devices include clutches and a brake actuatable in combinations of three to establish a plurality of forward gear ratios and at least one reverse gear ratio.

Abstract: A family of transmission gearing arrangements provides between eight and ten forward speed ratios and a reverse speed ratio. Three planetary gear sets are located on the input axis and a fourth planetary gear set is located on an offset axis. Axis transfer gears convey power between the input axis and the offset axis. One axis transfer gear is supported by a front support while another is supported by a center support. The center support also supports a clutch module and supplies pressurized fluid to engage the clutches in the clutch module.

Abstract: A power transmission system of a hybrid electric vehicle may include a first shaft and a second shaft. A first planetary gear set includes a first rotation element connected to a first motor/generator, a second rotation element operated as an output element, and a third rotation element connected to the first shaft. A second planetary gear set includes a fourth rotation element connected to the third rotation element and a second motor/generator, a fifth rotation element connected to the second rotation element and an output gear, and a sixth rotation element connected to a transmission housing. A direct-coupling device connects two rotation elements among the fourth, fifth, and sixth rotation elements of the second planetary gear set. Transfer gears form the externally-meshing gears, and friction elements connect a selected rotation element to a selected transfer gear or to the transmission housing.

Abstract: A power transmission system of a hybrid electric vehicle includes: an input shaft; a first shaft; a first planetary assembly on the first shaft, and including a first element connected to a first motor/generator, a second element connected to an output gear through a second shaft without rotational interference with the first shaft, and a third element connected to the input shaft; a second planetary assembly on the first shaft including a fourth element connected to a second motor/generator through the first shaft and selectively connected to the input shaft, a fifth element connected to the second element, and a sixth element selectively connected to a housing; transfer gears; and frictional elements selectively connecting one element of the second planetary assembly to the input shaft, directly coupling the second planetary assembly, or selectively connecting another element of the second planetary assembly to the housing.

Abstract: A transmission is provided having an input member, an output member, at least three planetary gear sets, 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 torque transmitting devices include clutches and brakes actuatable in combinations of two to establish at least ten forward gear ratios and one reverse gear ratio.

Abstract: A racing transmission. The racing transmission has a low gear, reverse gear, neutral and a direct drive gear. The transmission utilizes a drive shaft and two sets of planetary and sun gears. The transmission does not use a countershaft to accomplish low and reverse.

Abstract: An automatic transmission includes an input shaft, first to fourth planetary gear mechanisms and first to seventh engagement devices. Ten forward gears of the automatic transmission are established by bringing at least three of the first to seventh engagement devices into an engagement state.

Abstract: The invention provides a continuously variable transmission (CVT) system comprising a transmission means, connected to an input shaft and comprising at least a driving gear capable of rotating around its center, said center capable of rotating around a center of a virtual trajectory; a gear ring, engaged with said driving gear, capable of eccentrically rotating around said center of said virtual trajectory; a blocking means, engaged with said gear ring, comprising a set of blocking elements adopted to block the rotation of said gear ring and which elements are suitable to move; and an output shaft, connected with said driving gear. The invention further provides the use of such a CVT system in large vehicles and windmills.

Abstract: An actuator arrangement comprises an epicyclic gear set 4a, 4b including a sun gear 7, at least one planet gear 9 in meshing engagement with the sun gear 7, and a ring gear 3 in meshing engagement with the planet gear 9, the planet gear 9 being carried by a rotatable support 5, wherein one of the sun gear 7 and the support 5 is arranged to be driven by a motor 2 and the other of the sun gear 7 and the support 5 is arranged to drive an actuator 18, and a clutch arrangement 6 operable to resist rotation of the ring gear 3.

Abstract: A reverse clutch and planetary gear set are provided that can be installed in an automotive transmission. In some embodiments, the reverse clutch and planetary gear set are configured and dimensioned to be installed in a Powerglide transmission case. In other embodiments, the reverse clutch can have an increased mean diameter. In some embodiments, the reverse clutch can have an increased static holding capacity. In another embodiment, the planetary gear set can have a reduced numerical first gear ratio. In other embodiments, the planetary gear set can have components with increased strength. Methods for modifying a transmission to install a reverse clutch and planetary gear set are also provided.

Abstract: A transmission includes gearsets each including rotating members, a support held against rotation, brake servos located in the support, brakes each actuated by one of the brake servos for producing a connection between the support and a respective gearset member, a housing, clutch servos located in the housing, and clutches each actuated by one of the clutch servos for producing a drive connection between the housing and a respective gearset member.

Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, 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 torque transmitting devices include clutches and brakes. The torque transmitting devices are each selectively engageable in combinations of at least three to establish a plurality of forward speed ratios and at least one reverse speed ratio between the input member and the output member.

Abstract: A multistage transmission of a planetary design which comprises a basic transmission and a group transmission arranged downstream of the basic transmission. The basic transmission comprises three planetary gearsets, at least six rotatable shafts and at least five shift elements, and selected engagement thereof which results in different transmission ratios between an input and an output drive. The group transmission has a minus planetary gearset. The sun gear of the minus planetary gearset is connected to the output shaft of the basic transmission. The ring gear of the minus planetary gearset can be coupled to the housing, via a first shift element. The carrier of the minus planetary gearset is connected to the output shaft of the multi-stage transmission and is connectable to the ring gear, via a second shift element. The basic and the group transmissions are arranged together within the housing.

Abstract: A proposition is to provide a power transmitting mechanism for a hybrid vehicle having improved energy utilization efficiency. A power transmitting mechanism for the hybrid vehicle using powers of the engine and the motor/generator in a combined manner, the mechanism includes an engine drive shaft coupled to an engine output shaft via a main clutch; a motor output shaft of a motor/generator rotatably supported separately from the engine drive shaft; a drive shaft brake releasing/fixing the engine drive shaft; a motor-brake releasing/fixing the motor output shaft; and a planetary gear mechanism.

Abstract: A method and device for controlling a shiftable planetary gear set in a belt drive of an internal combustion engine in a motor vehicle having a sun gear which is fixedly connected to a belt pulley, a ring gear which can be connected fixedly with respect to the housing by means of a brake which is activated by an electrically operated actuator which is effective along a distance which is monitored by a relative distance sensor, as well as a web which is connected to a crankshaft of the internal combustion engine and rotatably accommodates planetary gears, wherein situated between the sun gear and the web is a free wheeling mechanism which can be switched and rolled over in both directions and is switched by the same actuator along the travel distance.

Abstract: A wrap-around braking device for a planetary gear train, having at least one wrap-around element, with first and second cam devices, and is designed to wrap around at least one ring gear of the planetary gear train for braking engagement. A shift fork, which can be moved in the axial direction of the shift fork and which has first and second actuating elements that act oppositely in the axial direction and which is mounted in a rotationally fixed manner in a housing that has at least first and second stops in the axial direction. For braking engagement on the ring gear, which rotates in a first rotational direction, the shift fork can be moved in a first axial direction such that the first actuating element interacts with the first cam device, while the second stop opposite the first actuating element in the axial direction interacts with the second cam device.

Abstract: A powertrain includes an Electric Torque Converter (ETC) assembly interconnecting a primary power source and a transmission. An ETC clutch connects a clutched ETC input from the ETC assembly to an output of the primary power source. A primary transmission clutch connects a clutched input of the transmission to the output of the primary power source. An ETC output from the ETC assembly is directly connected to a fixed input of the transmission. The ETC assembly includes a planetary gearset interconnecting the clutched ETC input and the ETC output of the ETC assembly. An electric motor is coupled to the planetary gearset and configured to provide a torque thereto. The torque may be directed to either the fixed input of the transmission through the ETC output of the ETC assembly, or to the output of the primary power source through the clutched ETC input of the ETC assembly.

Abstract: A multi-stage gearbox of planetary construction, in particular a power split transmission of a work engine, having a housing which accommodates four planetary sets, several shafts and several shift elements including at least a brake and a number of clutches. Selective engagement of the shift elements implements different gear ratios between a drive shaft and an output shaft. The drive shaft is connected to a carrier of the second planetary set while the sun gear of the second planetary set is coupled with a third shaft and the ring gear of the second planetary set is coupled with a fourth shaft. The output shaft is connected to a carrier of the fourth planetary set, and a fifth shaft is firmly connectable to the housing by a first brake.

Abstract: A switchable planetary gearbox in a hand-held power tool includes multiple planet carriers having associated planet wheels, and is to be displaced between at least two gear ratios, such that the gear ratios are to be engaged via a displaceable switching ring gear. At least three planet carriers having associated planet wheels are provided axially behind one another, such that in a position fixed with respect to the housing, the switching ring gear is rotationally coupled to the planet wheels on the second-stage planet carrier and simultaneously to the planet wheels on the third-stage planet carrier.

Abstract: A multi-speed transmission includes an input member, an output member, a stationary member, and a first and a second compound planetary gear set. The first compound planetary gear set has a first, a second, a third, a fourth, and a fifth member. The second compound planetary gear set has a first, a second, a third, and a fourth member. The first member of the second compound planetary gear set is continuously connected for common rotation with the output member. An interconnecting member continuously connects the first member of the first compound planetary gear set for common rotation with the second member of the second compound planetary gear set. The transmission has seven torque-transmitting mechanisms, including three brakes and four rotating-type clutches, that are engagable to establish up to fourteen forward speed ratios between the input member and the output member.

Abstract: A power train for a hybrid vehicle may include: a first planetary gear set that includes at least four rotary elements; a second planetary gear set that includes at least three rotary elements one of which is connected with at least one of the rotary elements of the first planetary gear set; a first clutch that is configured to connect/disconnect a rotary element of the first planetary gear set with/from a rotary element of the second planetary gear set; and a first brake that is provided to restrain rotation of a rotary element of the second planetary gear set, wherein at least two or more independent power sources and an output element are connected to the rotary elements of the first planetary gear set and the second planetary gear set.

Abstract: A mechanical power transmission system for transforming and delivering power effectively and efficiently using external pressure to propel a vehicle. The mechanical power transmission system includes a case; rotational members; a gear set being in operable communication to at least one of the rotational members; and a clutch system being in operable communication to the gear set and using external fluid pressure from a fluid source to effectively change speeds.

Abstract: A hybrid power driving system for a vehicle comprises an internal-combustion engine, a first electric motor, a second electric motor, a planetary coupling mechanism, a speed-reduction mechanism and a differential mechanism. An output shaft of the internal-combustion engine is connected with an input shaft of the first electric motor, and an output shaft of the first electric motor is connected with an output shaft of the second electric motor via a first clutch. The output shaft of the second electric motor is connected with one of a sun gear and a ring gear of the planetary coupling mechanism at a position of the output shaft along its axial direction. And the output shaft of the second electric motor is connected with the other one of a sun gear and a ring gear at another position of the output shaft along the axial direction via a second clutch.

Abstract: An electric driver (1) as a power tool comprises a motor (2) which actuates a tool bit (100). The electric driver (1) has a first planetary gear mechanism (30), a second planetary gear mechanism (40), and a regulation member which regulate a second outer gear (43) to rotate. The regulation member includes an outer gear engaging member (50) and a deformable member (51) which is fixedly connected to the outer gear engaging member (50). The deformable member (51) extends in a direction in which a rotational axis of the first and the second planetary gear mechanism (30, 40) extends. A controller (61) is adapted to measure rotation torque based on displacement of the deformable member (51) via a strain gauge (55) which is attached on the deformable member (51).

Abstract: A power tool that includes a housing, a motor, a planetary transmission, a first bearing and a second bearing. The motor is disposed in the housing and includes an output shaft. The planetary transmission has a sun gear, a plurality of first planet gears, a first ring gear and a carrier. The sun gear is driven by the output shaft. The first planet gears are driven by the sun gear and have teeth that are meshingly engaged to teeth of the first ring gear. The carrier includes a rear carrier plate and a front carrier plate between which the first and second planet gears are received. The rear carrier plate includes a first bearing aperture. The first bearing is received in the first bearing aperture and is configured to support the output shaft. The second bearing is received onto the rear carrier plate to support the carrier relative to the housing.

Abstract: Various embodiments of electrically-variable transmissions have first and second motor-generators, first and second planetary gear sets, and two torque-transmitting mechanisms, including a rotating-type torque-transmitting mechanism and a stationary-type torque-transmitting mechanism. An input member is connected for common rotation with a ring gear of the first planetary gear set. Carrier members of both of the planetary gear sets are connected for common rotation with one another, and with an output member, via one or more radial-extending hub members and an axial-extending member or shaft. The first motor/generator is connected for common rotation with the sun gear of the first planetary gear set. The second motor/generator is connected for common rotation with the sun gear member of the second planetary gear set. In each embodiment, the various components of the transmission are positioned relative to one another to minimize the number and/or size of interconnecting shafts and shells.

Abstract: A two-speed transmission for transmitting a drive torque of a vehicle, having an input shaft drivable by a drive unit, a planetary gear system with sun gear, planet gears, planet carriers and ring gear and an output shaft, the sun gear having a rotationally fixed connection to the input shaft and the planet carrier having a rotationally fixed connection to the output shaft, and having a regulatable clutch system whereby the planet carrier can be fixed either relative to the input shaft or relative to the ring gear, and having an exclusively engageable and disengageable clutch system whereby the ring gear can be fixed relative to a housing that supports the planetary gear system.

Abstract: One aspect of the invention includes a speed changing device which can be switched from a high-speed low-torque output state to a low-speed high-torque output state. In the high-speed low-torque state, a second stage internal gear rotates together with a first stage carrier. The low-speed high-torque output state is caused as the second stage internal gear is disconnected from the first stage carrier so as to be restricted from rotating. The timing of resetting the speed changing device is shifted relative to the timing of stopping the electric motor by an OFF operation of the switch lever with a delay mechanism, so that the second stage internal gear is engaged with the first stage carrier after the rotation through inertia is stopped, whereby its impact is reduced.

Abstract: A planetary gear mechanism for a bicycle, and more particularly to a planetary gear mechanism comprising a first planetary mechanism connected coaxially in series to a second planetary mechanism, which second planetary mechanism is connected coaxially in series to a third planetary mechanism, the second planetary mechanism output is a step up in speed from the first planetary mechanism output, the third planetary mechanism output is a step up in speed from the second planetary mechanism output.