Abstract: Various methods and systems are provided for a multi-speed electric axle assembly with three gear ratios. The multi-speed electric axle assembly includes one or more power supplies, one or more shafts operatively coupled to the one or more power supplies and a differential, and one or more Ravigneaux gear assemblies integrated with the one or more shafts. The one or more Ravigneaux gear assemblies of the multi-speed electric axle assembly providing the three gear ratios.

Abstract: An axle center transmission includes a transmission gearing for transmitting a driving torque received at an input element and having at least two selectively switchable gear transmission ratios and a differential for distributing the transmitted driving torque to two output elements. The transmission gearing has a first gear that is formed as a planetary transmission and comprises a first sun gear, a first planet carrier having one or more planet gears, and a first annulus gear. The transmission gearing furthermore has a second gear that is formed as a planetary transmission and comprises a second sun gear, a second planet carrier having one or more planet gears, and a second annulus gear. The first sun gear forms said input element; the first planet carrier is stationary; and the second sun gear is couplable or coupled to the first annulus gear for a common rotation.

Abstract: A 6-speed planetary transmission for a motor vehicle has an input shaft, an output shaft, a first planetary gear set, a second planetary gear set and a third planetary gear set. The input shaft can be coupled to the first planetary carrier or to the first ring gear via a first shifting element. The first sun gear can be coupled to a gearbox housing via a second shifting element. The first planetary carrier can be coupled to the first ring gear via a third shifting element. The second ring gear or the second planetary carrier can be coupled to the gearbox housing via a fourth shifting element. In addition, the first ring gear or the first planetary carrier, the second sun gear and the third sun gear are connected for conjoint rotation. In addition, the output shaft is connected for conjoint rotation to the second planetary carrier or the second ring gear.

Abstract: An automatic transmission includes: a main transmission including a plurality of main transmission side planetary gear mechanisms; an auxiliary transmission having a rotation axis different from a rotation axis of the main transmission; and a low/high switching mechanism switching between a low mode and a high mode by engaging and disengaging an engaging device provided on the auxiliary transmission. Further, the low/high switching mechanism switches between the low mode and the high mode at a point where a gear ratio in the low mode coincides with a gear ratio in the high mode.

Abstract: A selectable one-way clutch can be equipped in a vehicle powertrain assembly. The selectable one-way clutch can include a notch plate and a pocket plate. The pocket plate has a pocket, and the notch plate has a notch. A coupling mechanism is disposed in the pocket and is moveable in the pocket. The coupling mechanism is used to bring about engagement between the notch and pocket plates and, in an example, is a strut-type coupling mechanism. A pair of damper springs is disposed in the pocket. A selector plate is situated between the pocket plate and the notch plate. The selector plate includes a window.

Abstract: A two-speed transmission having two clutches for an electric vehicle includes an electric motor, a middle shaft, a first clutch, a second clutch, a first gear assembly and a second gear assembly. The electric motor includes a spindle. The first and second clutches are furnished on the middle shaft coaxially. The first gear assembly is furnished on the spindle and the first clutch respectively to generate a first gear ratio. The second gear assembly is furnished on the spindle and the first clutch respectively to generate a second gear ratio different from the first gear ratio. When the first clutch is activated to connect with the middle shaft, the second clutch separates from the middle shaft, and the electric motor outputs a first torque corresponding to the first gear ratio to the middle shaft. Similarly, the electric motor outputs a second torque corresponding to the second gear ratio.

Abstract: A motor vehicle transmission comprising a drive shaft, an output shaft, a planetary gear set system, and four shift elements. The first planet gear meshes with the first sun gear, first ring gear, and with one of the second planet gears. The second planet gear meshes with the second sun gear and second ring gear. The first sun gear has a smaller diameter than the second sun gear. The first ring gear has a larger diameter than the second ring gear, and is connected to the output shaft. The second ring gear is rotationally fixable by closing the first shift element. The drive shaft is connectable to the second sun gear by closing the third shift element. The drive shaft is connectable to the planet carrier by closing the fourth shift element. The first sun gear is rotationally fixable by closing the second shift element.

Abstract: A transmission with a common carrier planetary gear set is provided for a vehicle that has drive axle half shafts defining an axis of rotation, an electric motor/generator with a motor shaft parallel with the axis of rotation, either concentric with the axis of rotation or spaced therefrom, and a differential with a differential carrier connected with the drive axle half shafts. The planetary gear set has a first sun gear member continuously or selectively connectable with the motor shaft, first and second pinion gears, a carrier member rotatably supporting the first and the second pinion gears so that the first pinion gear meshes with the first sun gear member, and a ring gear member meshing with one of the pinion gears. The ring gear is connectable to a non-rotating housing. The carrier member is operatively connected with the differential carrier.

Abstract: The present disclosure provides an automatic transmission having an input adapted to couple to a torque-generating mechanism and an output coupled to the input. The transmission also includes a first rotating torque-transferring mechanism disposed along a first torque path and coupled to the input. A second rotating torque-transferring mechanism is disposed along a second torque path and is coupled to the input independent of the first torque-transferring mechanism. The transmission includes a plurality of stationary torque-transferring mechanisms, each of which is disposed between the input and output. The transmission includes a first planetary gearset, a second planetary gearset, a third planetary gearset, and a fourth planetary gearset, where each gearset includes a sun gear, a ring gear, and a carrier assembly. Moreover, the carrier assembly of the third planetary gearset is coupled to the output and the sun gear of the fourth planetary gearset.

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 brakes actuatable in combinations of three to establish a plurality of forward gear ratios and at least one reverse gear ratio.

Abstract: To disable engine braking so as to act at a given shift stage in a D range selected manually, and to enable engine braking so as to act at the given shift stage in an L range, an automatic transmission includes first and second meshing mechanisms. The transmission further includes a one-way clutch, a first linkage for meshing the first meshing mechanism in synchronism with N-to-D movement, and a second linkage for meshing the second meshing mechanism in synchronism with D-to-L movement. A rotating part permits a driving force to be transmitted from an input member via the one-way clutch with the first meshing mechanism meshed in the D range and permits a driving force to be transmitted from the input member, without transmitting via the one-way clutch, with the first and second meshing mechanisms each meshed in the L range.

Abstract: A gear train of an automatic transmission for vehicles has the advantages of simplifying structures of the automatic transmission and improving power delivery performance and fuel economy as a consequence of realizing at least nine forward speeds and one reverse speed by combining three simple planetary gear sets with four clutches and three brakes.

Abstract: A power transmission includes an input; an output; a first gearset including an output having a lower speed than a speed of the input; a second gearset having first, second, and third rotating elements; a second gearset having fourth, fifth, sixth, and seventh rotating elements; four clutches; and two brakes. The brakes and clutches are engaged in combinations of three to produce up to eleven forward speed ratios and two reverse speed ratios.

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.

Abstract: A planetary gear train of an automatic transmission for vehicles may include an input shaft adapted to receive torque of an engine, an output gear adapted to output changed torque, a first planetary gear set having a first sun gear, a first planet carrier, and a first ring gear as rotation elements, a second planetary gear set having a second sun gear, a second planet carrier, and a second ring gear as rotation elements, a third planetary gear set having a third sun gear, a third planet carrier, and a third ring gear as rotation elements, seven rotation shafts connected or selectively connected to one or more rotation elements, other rotation shafts, or a transmission housing, and six friction members interposed selectively at connecting portions of the rotation shafts.

Abstract: A multi-ratio automatic transmission for a vehicle, the transmission having a single planetary gear set, a plurality of friction elements for coupling components of the planetary gear set between an input and an output of the transmission in different configurations so as to achieve a plurality of forward drive ratios, and a control system for selectively engaging/disengaging the friction elements in different combinations to effect selection of the ratios, wherein the friction elements include first and second clutches mounted forward of the planetary gear set, and wherein power flow in each of the forward drive ratios is routed from the input to the planetary gear set through at least one of the first and second clutches.

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: A transmission includes an input shaft (IP), an output shaft (OP), a single planetary gearset (SP), a compound planetary gearset (CP), shifting elements. The single planetary gearset is arranged before the compound planetary gearset, and the shifting elements comprise at least two brakes (B1,B2), the first clutch (C1), the second clutch (C2), the third clutch (C3), and all the shifting elements are positioned between the single planetary gearset and the compound planetary gearset, which has compact arrangements, and can reduce the power transmission length. The transmission also includes an one-way clutch (OWC) acted on the compound planetary gearset.

Abstract: A gear train of an automatic transmission includes eight forward speeds and two reverse speeds to improve power delivery performance and to reduce fuel consumption, by controlling two simple planetary gear sets and one compound planetary gear set through four clutches and two brakes.

Abstract: An automatic transmission including a first clutch selectively connecting a first rotary member and a second rotary member disposed coaxially with the first rotary member, a second clutch selectively connecting the first rotary member and a third rotary member disposed coaxially with the first rotary member, a first drum in which a first piston of the first clutch is axially slidably received, a second drum disposed coaxially with the first drum, to accommodate the first drum, and in which a second piston of the second clutch is axially slidably received, an abutting portion abutting contact of the first and second drums with each other in an axial direction of the first and second drums, and a fitting portion at which the first drum is fitted in the second drum and that inhibits relative rotation of the first and second drums about a common axis of the first and second drums.

Abstract: An eight speed transmission is provided having three planetary gear sets controlled by seven or optionally eight torque-transmitting mechanisms to provide eight forward speed ratios and a reverse speed ratio. The first planetary gear set is representable by a three-node first lever. The second and third planetary gear sets are interconnected such that they are representable by a four-node second lever.

Abstract: A gear train of an automatic transmission for a vehicle may be provided to realize eight forward speeds and one reverse speed with three single pinion planetary gear set, four clutches and two brakes.

Abstract: A multi-speed transmission for a vehicle is provided with a selectable one-way braking clutch (SOWBC). The transmission has one or more planetary gear sets, and a set of intermeshing gears, which may be a planetary gear set. Multiple torque-transmitting mechanisms are engagable in different combinations to establish at least one reverse speed ratio and multiple forward speed ratios between an input member and an output member. A selectable one-way braking clutch is configured to brake in one rotational direction and is selectively reversible to brake in an opposite rotational direction, and freewheels in some speed ratios.

Abstract: A multi-speed transmission for a vehicle is provided with a selectable one-way braking clutch (SOWBC). The transmission has an input member connected for common rotation with one of the members of four planetary gear sets and an output member connected for common rotation with another of the members of the planetary gear sets. Four interconnecting members connect different members of the planetary gear sets for common rotation. A first brake is selectively engagable to ground the first member of the first planetary gear set to the stationary member. A first, a second, and a third rotating clutch are each selectively engagable to connect a different respective pair of the members of the planetary gear sets for common rotation. A selectable one-way braking clutch is configured to brake in one rotational direction and is selectively reversible to brake in an opposite rotational direction, and freewheels in some speed ratios.

Abstract: A multi-stage automatic transmission possesses an input drive shaft (AN), an output drive shaft (AB), three single planetary gear sets (RS1, RS2, RS3) as well as five shifting elements (A to E), via the pairwise selective closure of which, an entry speed of rotation of the input drive shaft (AN) can be transmitted to the output drive shaft (AB) without group shifting. A sun gear (SO3) of the third planetary gear set (RS3) can be set motionless by the first shifting element (A) on the transmission housing (GG). The input drive shaft (AN) is bound to a sun gear (SO2) of the second planetary gear set (RS2) and via the second shifting element (B) can be connected with a sun gear (SO1) of the first planetary gear set (RS1) and via of the fifth shifting element (E) with a spider (ST1) of the first planetary gear set (RS1).

Abstract: A multiple speed transmission includes an input and output; a first, second, third and fourth planetary gear sets, each gear set including a sun gear, a ring gear, a carrier, and pinions supported on the carrier and meshing with the sun gear and the ring gear; a first epicyclic gearing assembly including the first gear set, the second gear set, a first clutch, a first brake, a second brake, and first, second, third and fourth rotating members, said first clutch being operable to couple said first rotating member to the input, said first brake being operable to hold said fourth rotating member against rotation, and said second brake being operable to hold said second rotating member against rotation; and a second epicyclic gearing assembly including the third gear set, the fourth gear set, a second clutch, a third clutch, a third brake, and fifth, sixth, seventh and eighth rotating members, the third rotating member being secured to the eighth rotating member, said second control clutch being operable to coupl

Abstract: The ring gear of the second gearset (RS2) and the input shaft couple to form a first shaft (1). The carrier of third gearset (RS3) and the output shaft form a second shaft (2). The sun gears of first and fourth gearsets (RS1, RS4) form a third shaft (3). The carrier of first gearset (RS1) forms a fourth shaft (4). Sun gears of second and third gearsets (RS2, RS3) form a fifth shaft (5). Ring gears of first and third gearsets (RS1, RS3) form a six shaft (6). The carriers of second and fourth gearsets (RS2, RS4) form a seventh shaft (7). A ring gear of fourth gearset (RS4) forms an eighth shaft (8). In the direction of power flow, First and second shifting elements (A), (B) are located between shafts (3, 4) and a transmission housing, third shifting element (C) is between two of shafts (1, 5, 7), fourth and fifth shifting elements (D), (E) are between shafts (6, 8), (5, 8).

Abstract: A vehicle automatic transmission includes a planetary gear that reduces a speed of an input rotation of an input shaft and outputs a reduced speed rotation; at least two clutches that are capable of transmitting the reduced speed rotation that passes through the planetary gear; a planetary gear set having at least two rotation elements, wherein each rotation element can transmit the reduced speed rotation transmitted by the clutches; and an input transmitting clutch that is capable of transmitting the input rotation into one of the at least two rotation elements.

Abstract: In an automatic transmission (AT) in which an input shaft (Input) and an output gear (Output) are disposed on the same axis and three clutches (C1-C3) and two brakes (B1, B2) are selectively operated to provide six forward speeds, first and second planetary gear sets (GS1, GS2) are configured to consistently reduce the speed of input rotation and output the speed-reduced rotation, thereby enabling downsizing of them. The first and second planetary gear sets (GS1, GS2) are arranged in a transmission case at both the axial ends thereof. Third and fourth planetary gear sets (GS3, GS4) are connected to each other to have four rotation elements in combination, thereby constituting a Simpson planetary gear train. One of the four rotation elements (a fourth carrier (PC4) in an illustrated example) is connected to the output gear (Output).

Abstract: A small-sized vehicular planetary gear type step-variable transmission having seven or more forward drive gear positions with a wide range speed ratio and suitable for use on a vehicle. A transmission includes three planetary gear sets, four clutches, and two brakes to provide seven or more forward drive gear positions with a wide range speed ratio. A counter gear pair is constituted by an output gear disposed between a first transmission portion and a second transmission portion, and a driven gear which is mounted on a counter shaft rotatably about a second axis parallel to a first axis and which is held in meshing engagement with the output gear. A fourth clutch reduces an amount of increase of an axial length of the transmission, so that the transmission is small-sized and used on the vehicle.

Abstract: A multi-speed transmission with six forward gears and one reverse gear having an input and output shaft, three planetary gear sets (P1, P2, P3), six rotatable shafts and five control elements. The input shaft communicates with the gear set (P2), the shaft (3), and the shaft (4). The shaft (3) communicates with the carrier of the gear set (P1), the housing and the shaft (6). The shaft (4) communicates with the gear set (P1) and the housing. The shaft (5) communicates with the gear set (P1) and the gear set (P3). The shaft (6) communicates with the gear set (P2). The output shaft communicates with the gear set (P3) and the gear set (P2), and the gear set (P3) communicates with the housing.

Abstract: In an automatic transmission (AT) in which an input shaft (Input) and an output gear (Output) are disposed on the same axis and three clutches (C1-C3) and two brakes (B1, B2) are selectively operated to provide six forward speeds, first and second planetary gear sets (GS1, GS2) are configured to consistently reduce the speed of input rotation and output the speed-reduced rotation, thereby enabling downsizing of them. The first and second planetary gear sets (GS1, GS2) are arranged in a transmission case at both the axial ends thereof. Third and fourth planetary gear sets (GS3, GS4) are connected to each other to have four rotation elements in combination, thereby constituting a Simpson planetary gear train. One of the four rotation elements (a fourth carrier (PC4) in an illustrated example) is connected to the output gear (Output).

Abstract: A multi-speed automatic transmission includes an input shaft, a first out put shaft having a first planetary gear set, and a second output shaft having a second planetary gear set. The shafts are in parallel with one another. The input shaft is engageable with the first ring gear and the second carrier. The first output shaft is engageable with the first carrier. The second output shaft is engageable with the second ring gear. The first and the second sun gears are engaged with an intermediate gear which can be held to a transmission case by a first brake arranged between the intermediate gear and the first and second planetary gear sets, and being connectable with the input shaft via the input drive gear and the first input driven gear. The second carrier can be held to the transmission case.

Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least eight forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets having seven torque-transmitting mechanisms and three interconnecting members. The powertrain includes an engine that is selectively connectable to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The seven torque-transmitting mechanisms provide interconnections between various gear members, the input shaft and the transmission housing, and are operated in combinations of two to establish at least eight forward speed ratios and at least one reverse speed ratio.

Abstract: A power train of a 7-speed transmission for a vehicle is provided which comprises a first, a second, and a third single-pinion planetary gear set on an input shaft. A first ring gear and a second planetary carrier, a second ring gear and a third planetary carrier, a third ring gear and a first planetary carrier are respectively fixedly connected. A first brake selectively connects a first sun gear to a transmission case, a second sun gear is fixedly connected to the input shaft to operate always as an input element, and a third brake selectively connects a third sun gear to the transmission case.

Abstract: A multi-speed transmission is provided with a selectable (reversible) braking one-way clutch operative to brake rotation of a member of a planetary gear set of the transmission when the transmission is in reverse and first speed. First and second rotating input clutches are slipped when the vehicle is launched in reverse or first speed. The transmission is preferably characterized by the absence of a torque converter, but the invention may be implemented with a torque converter if desired.

Abstract: A multi-stage planetary gear train has an upper-side planetary set comprising a sun gear, a ring gear, an outer pinion meshed with the ring gear, an inner pinion meshed with the outer pinion and the sun gear, and a carrier rotatably supporting the pinions; and a lower-side planetary set comprising first, second, third and fourth members that are rotatable. The sun gear is connected with the input shaft, the first member is connected with the ring gear at first-forward speed, the second member is held to the transmission case by connection with the carrier at the first-forward speed and a reverse position and connected with the input shaft at forward speeds higher than 3rd speed, the third member is held to the transmission case by connection with the carrier at second-forward speed and connected with the ring gear at third-forward speed, the fourth member is connected with the output shaft.

Abstract: A powertrain includes a power transmission having an input shaft continuously connected directly between an engine and a planetary gear member of a first planetary gearset. Another member of the planetary gearset is selectively grounded by a torque transmitting mechanism to establish a reaction member during the launch of a vehicle incorporating the powertrain. The reaction member is established during both the lowest forward drive ratio and the reverse drive ratio. A third member of the planetary gearset transmits the torque from the input shaft, as modified by the planetary gearset, to other planetary gearsets in down stream power flow arrangement with the first planetary gearset.

Abstract: A compound planetary gear arrangement for a transfer case includes a ring gear in driving engagement with an output shaft. A sun gear and carrier are selectively alternatively connectable with a transmission housing (ground) through a clutch or selectively connectable with an input through a clutch. This compound planetary gear arrangement provides one direct and two underdrive ratios between the input and the output of the transfer case.

Abstract: A compact longitudinal transmission has an input shaft rotatably supported in a front end wall, an output shaft rotatably supported in a rear end wall, and a housing interconnecting the front end wall and the rear end wall. Three planetary gearsets disposed within the housing are controlled by five torque-transmitting mechanisms including four friction disc or plate mechanisms and one band mechanism. The band mechanism being disposed radially outboard of the rearmost one of the planetary gearsets.

Abstract: A power transmission has a compound input gearset, a Ravigneaux gearset, five friction type torque-transmitting mechanisms, and a one-way type torque-transmitting mechanism selectively engageable to provide at least six forward speed ratios and one reverse speed ratio for the transmission. The input gearset includes a planet carrier, which is stationary within a transmission housing and connected with a stationary portion of the transmission housing. The planet carrier also includes a central support member which provides nonrotatable housings for the apply pistons for three of the friction type torque-transmitting mechanisms.

Abstract: A power train for an automotive transmission includes first and second planetary gear sets disposed around an input shaft. The first and second planetary gear sets include a first sun gear, a first planet carrier, and a first ring gear. The second planetary gear set includes a second sun gear, a second planet carrier, and a second ring gear; the first planet carrier being fixedly connected to the second ring gear. The first sun gear is connected to the input shaft with a first clutch interposed between the first sun gear and the input shaft. The second planet carrier is connected to the input shaft with a second clutch interposed between the second planet carrier and the input shaft, and the second sun gear is connected to the input shaft with a third clutch interposed between the second sun gear and the input shaft. The fourth clutch and the second one-way clutch are disposed spaced away from each other in the axial direction of the input shaft.

Abstract: A speed-reducing gear unit is provided for causing a reduced-speed rotation output member to have a reduced rotation that is slower than rotation of an input shaft. The reduced-speed rotation output member is switched between a reduced-speed rotation state and a free rotation state by rotation state switching means. The reduced-speed rotation of the reduced-speed rotation output member is selectively transferred to fourth and first elements of a speed-changing dual planetary gear unit via first and third control clutches. The rotation of the input shaft is transferred to a second element via a second control clutch. Rotations of the first and second elements are selectively restricted by first and second control brakes. A third element is connected to an output shaft.

Abstract: A multi-stage automatic transmission using a reduction planetary gear and a planetary gear set in which the respective thrust forces generated thereat are supported by a low bearing load or a low case load. The automatic transmission is provided with a reduction planetary gear, coupled to an input shaft to fix a reaction force element so as to output a reduction rotation to an output element, and a planetary gear set, that outputs a speed shift rotation upon input of the subsequent reduction rotation. During at least first gear driving, there is provided a force transmission route in which thrust forces generated at one element of the reduction planetary gear and one element of the planetary gear set, respectively, are transmitted. In that route, a torsion direction of the helical teeth of the respective elements are set such that a direction of a thrust force of the element and a direction of the thrust force of the other element are different from each other during first gear driving.

Abstract: A seal for a bicycle transmission includes an annular housing and an annular seal member. The housing includes a side wall defining a plurality of circumferentially disposed slots. The seal member is retained to the housing and extends radially inwardly. The seal member is formed from a resilient material, and the housing is formed from a material that is more rigid than the seal member.

Abstract: A power train for an automotive transmission includes first and second planetary gear sets disposed around an input shaft. The first and second planetary gear sets include a first sun gear, a first planet carrier, and a first ring gear. The second planetary gear set includes a second sun gear, a second planet carrier, and a second ring gear; the first planet carrier being fixedly connected to the second ring gear. The first sun gear is connected to the input shaft with a first clutch interposed between the first sun gear and the input shaft. The second planet carrier is connected to the input shaft with a second clutch interposed between the second planet carrier and the input shaft, and the second sun gear is connected to the input shaft with a third clutch interposed between the second sun gear and the input shaft. The fourth clutch and the second one-way clutch are disposed spaced away from each other in the axial direction of the input shaft.

Abstract: Hydraulic pressure regulated by a first pressure control valve is supplied to an electromagnetic changeover valve. The electromagnetic changeover valve changes over the hydraulic pressure between a low & reverse passage communicating with a low & reverse brake and a high clutch passage communicating with a high clutch, thereby a simultaneous engagement of the low & reverse brake and the high clutch can be avoided and further the simplification of the hydraulic control apparatus of an automatic transmission can be realized.

Abstract: An automatic transmission, which establishes automatic shifts in a multiple gear stages by selectively inputting a plurality of input rotations to a planetary gear set, includes first and third clutches connected through a reduction planetary gear to an input shaft and transmits a decelerated rotation to the planetary gear set and a second clutch directly connected to the input shaft and transmits a non-decelerated rotation to the planetary gear set. The reduction planetary gear is arranged on the end of a boss portion of a transmission case wall and the one element is fixed to the end of the boss portion, hydraulic servos of the first and third clutches are arranged on the boss portion, a hydraulic servo of a second clutch is arranged in the other side of the reduction planetary gear from the hydraulic servos, and the hydraulic paths for the hydraulic servos are formed in the boss portion.

Abstract: An automatic transmission establishing multiple gear stages includes a reduction planetary gear, at least two clutches transmitting a decelerated rotation transmitted from the reduction planetary gear, and a planetary gear set inputted the decelerated rotation transmitted through the two clutches. The reduction planetary gear and the two clutches are arranged in one side of the planetary gear set. The reduction planetary gear is arranged between the clutches.

Abstract: A multiple speed transmission for motor vehicles includes three simple planetary gearsets hydraulically actuated friction clutches and brakes for controlling operation of the gearsets and altering the torque delivery path between an input shaft and an output shaft. An overrunning brake is provided for operation in reverse drive to share the torque reaction with a friction brake. The transmission is suited to produce five, six or seven forward speed ratios and a reverse drive ratio.