Abstract: A multiple speed transmission capable of producing five underdrive gear ratios, one direct drive ratio, four overdrive ratios, and four reverse ratios includes four interconnected planetary gearsets, multi-plate clutches and brakes controlling the gearset elements, and a coupler that changes between forward drive and reverse drive by holding and releasing alternate gearset components against rotation on the transmission case. The transmission in combination with a single-speed transfer case having either an on-demand transfer clutch, or a full-time all-wheel drive system, are formed in an integrated package.

Abstract: A power transmission includes three interconnected planetary gearsets and five selectively engageable torque-transmitting mechanisms. The planetary gearsets and torque-transmitting mechanisms are disposed within a transmission housing. The torque-transmitting mechanisms are selectively engageable to provide six forward speed ratios and one reverse speed ratio in the planetary gearsets between an input shaft and an output shaft.

Abstract: A power transmission has three planetary gearsets, which are interconnected and also having at least one member continuously drivingly connected with an input shaft. Two of the planetary gearsets are connected with an output shaft. Five torque-transmitting mechanisms are disposed between two end walls and an outer housing, which define four spaces within the power transmission. The torque-transmitting mechanisms are disposed within two or more of the four spaces or combinations of two of the spaces.

Abstract: A planet gear carrier for a bicycle hub transmission comprises a first carrier member including a first carrier member axle opening for receiving an axle therethrough. The first carrier member includes plurality of first planet gear openings disposed on a first side of the first carrier member and a plurality of second planet gear openings disposed on a second side of the first carrier member. A separate second carrier member is fastened to the first side of the first carrier member, wherein the second carrier member has a second carrier member axle opening for receiving the axle therethrough. A separate third carrier member is fastened to the second side of the first carrier member, wherein the third carrier member has a third carrier member axle opening for receiving the axle therethrough.

Abstract: A seven-speed transmission includes an input shaft, an output shaft, and a planetary gear arrangement having first, second, third and fourth planetary gear sets, each planetary gear set having first, second and third members. First and second interconnecting members continuously interconnect members of the planetary gear sets. Seven torque-transmitting mechanisms are engaged in combinations of three to establish seven forward speed ratios and a reverse speed ratio between the input shaft and the output shaft. The transmission is alternatively operable through two different sets of six speeds by engaging the sixth or seventh torque-transmitting mechanism before cycling the transmission through different speed ratios. In this manner, the transmission is operable as a dual six-speed transmission.

Abstract: A transfer case having an input shaft, an output shaft, and a planetary gearset connected therebetween. The planetary gearset includes a first sun gear, a second sun gear, a carrier coupled for rotation with the input shaft, a ring gear coupled for rotation with the output shaft, and meshed pairs of first and second pinions rotatably supported on the carrier with each first pinion meshed with the first sun gear and each second pinion meshed with the second sun gear and the ring gear. The transfer case further includes a powershift clutch assembly comprised of a first range clutch located between the carrier and the ring gear, a second range clutch located between the first sun gear and a stationary member, and a third range clutch located between the second sun gear and the stationary member.

Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least five forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets, two clutches and two brakes. The powertrain includes an engine and torque converter that is continuously connected with at least one member of the third planetary gear set and an output member that is continuously connected with another member of the third planetary gear set. The two clutches and two brakes provide interconnections between various gear members, the transmission housing, and with the input and the output shaft, and are operated in combinations of two to establish at least five forward speed ratios and one reverse speed ratio.

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

Abstract: A transfer case having an input shaft, an output shaft, and a planetary gearset connected therebetween. The planetary gearset includes a first sun gear, a second sun gear, a carrier coupled for rotation with the input shaft, a ring gear coupled for rotation with the output shaft, and meshed pairs of first and second pinions rotatably supported on the carrier with each first pinion meshed with the first sun gear and each second pinion meshed with the second sun gear and the ring gear. The transfer case further includes a powershift clutch assembly comprised of a first range clutch located between the carrier and the ring gear, a second range clutch located between the first sun gear and a stationary member, and a third range clutch located between the second sun gear and the stationary member.

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 gear set. Another member of the planetary gear set 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 gear set transmits the torque from the input shaft, as modified by the planetary gear set, to other planetary gear sets in down stream power flow arrangement with the first planetary gear set. The torque transmitting mechanism grounding the reaction member of the first planetary gear set is preferably a brake having two half bands.

Abstract: A rear wheel hub and chainless drive train gear assembly for use on a bicycle having an axle bracket fixed to the frame of the bicycle, a spindle extending axially through the axle bracket and left and right pedal crank arms for rotating the spindle upon application of a pedaling force. A primary drive gear fitted to the spindle drivingly engages carrier gears which operate a planet gear cage housing and a multiple planetary gear and sun gear arrangement according to various gear ratios determined by selective operation of a clutch assembly. Planetary gear groups each include an integral set of planetary gears of varying size which mesh with corresponding sun gear rings. Operation of the clutch assembly serves to selectively engage pawl stops with a corresponding sun gear ring, thereby engaging the corresponding sun gear ring with one of the planetary gears of the planetary gear groups according to a selected gear ratio.

Abstract: A transfer case having an input shaft, an output shaft, and a planetary gearset connected therebetween. The planetary gearset includes a first sun gear, a second sun gear, a carrier coupled for rotation with the input shaft, a ring gear coupled for rotation with the output shaft, and meshed pairs of first and second pinions rotatably supported on the carrier with each first pinion meshed with the first sun gear and each second pinion meshed with the second sun gear and the ring gear. The transfer case further includes a powershift clutch assembly comprised of a first range clutch located between the carrier and the ring gear, a second range clutch located between the first sun gear and a stationary member, and a third range clutch located between the second sun gear and the stationary member.

Abstract: A transfer case having an input shaft, an output shaft, and a planetary gearset connected therebetween. The planetary gearset includes a first sun gear, a second sun gear, a carrier coupled for rotation with the input shaft, a ring gear coupled for rotation with the output shaft, and meshed pairs of first and second pinions rotatably supported on the carrier with each first pinion meshed with the first sun gear and each second pinion meshed with the second sun gear and the ring gear. The transfer case further includes a powershift clutch assembly comprised of a first range clutch located between the carrier and the ring gear, a second range clutch located between the first sun gear and a stationary member, and a third range clutch located between the second sun gear and the stationary member.

Abstract: A powertrain has a multi-ratio power transmission having three axially aligned simple planetary gear sets each of which has a sun gear member, a ring gear member and a planet carrier assembly member. The planetary gear sets are connected between an input shaft and an output shaft by a plurality of radially extending hubs at least four of which are connected with axially extending sleeves. The hubs are disposed axially between the planetary gear sets. The sleeves are disposed radially outboard of the planetary gear sets and are operatively connected with a plurality of torque transmitting mechanisms, also disposed radially outboard of said planetary gear sets, that are selectively operatively controlled to establish six forward drive ratios and one reverse drive ratio between the input shaft and the output shaft. The planet carrier assembly member of the first planetary gear set is continuously connected with the ring gear member of the third planetary gear set.

Abstract: A powertrain has a planetary gear arrangement that is controllable to establish six forward speed ratios and one reverse ratio through the selective engagement of six torque transmitting mechanisms. The planetary gear arrangement includes three sun gear members, a ring gear member and a planet carrier assembly member having groups of three intermeshing pinion gear members axially arranged in three gear mesh planes. A first of the gear mesh planes has a sun gear member/pinion gear member mesh, a pinion gear member/pinion gear member mesh, and a ring gear member/pinion gear member mesh. A second of the gear mesh planes has a sun member/pinion gear member mesh, and at least one pinion gear member/pinion gear member mesh. A third of the gear mesh planes has a sun gear member/pinion gear member mesh. The ring gear member is continuously connected with a transmission output shaft.

Abstract: An internal hub transmission for a bicycle includes a hub axle for retaining the transmission to a bicycle frame, wherein the hub axle has an axle axis; a driver rotatably supported relative to the hub axle; an output member rotatably supported relative to the hub axle; and a planet gear mechanism. The planet gear mechanism includes a sun gear rotatably supported relative to the hub axle and movable in a direction of the axle axis; a planet gear carrier rotatably supported relative to the hub axle; a planet gear rotatably supported to the planet gear carrier, wherein the planet gear meshes with the sun gear; and a ring gear meshing with the planet gear. The sun gear moves in the direction of the axle axis between a first position, wherein the sun gear is nonrotatably coupled to a coupled member, and a second position, wherein the sun gear is decoupled from the coupled member. The coupled member is one of the hub axle, the driver, the planet gear carrier, and the output member.

Abstract: A powertain includes an engine and torque converter arranged to provide input power to a six speed planetary transmission. The transmission includes a simple planetary gear set and a compound planetary gear set that are selectively interconnected by a pair of fluid-operated clutch mechanisms. Two other selectively engageable fluid-operated clutch mechanisms and three selectively engageable fluid-operated brake mechanisms are provided to control the power input and reaction within the planetary transmission. The clutch mechanisms and the brake mechanisms are engaged in combinations of three to provide six forward speed ratios and at least one reverse speed ratio between a transmission input shaft and a transmission output shaft.

Abstract: An automatic transmission for motor vehicles comprising three interconnected planetary gear units, two rotating friction clutches and four friction brakes providing six optimized forward gear ratios and a reverse ratio, all assembled into a compact package no larger than the current four-speed automatic transmissions. This invention preferably utilizes two multi-plate rotating clutches and special friction force balanced brake bands that allows self-synchronized ratio shifts without creating any side loading of associated band drums.

Abstract: A transmission used as part of a drive unit to transmit power is coupled to a V6 engine drive shaft by a torque converter and includes an axially extending ring gear assembly, a sun gear positioned coaxially within part of the ring gear assembly and two planetary gear assemblies each spaced axially from the other and meshing with the sun gear and the ring gear assembly. The ring gear assembly is driven in rotation about its axis and an output drive shaft by the rotational forces of the motor output shaft and includes two different diameter annular ring gears which are each centered on and extend radially about the transmission axis. The annular ring gears have different diameters and radially inwardly extending teeth. The sun gear includes a portion axially aligned within each of the two ring gears. A clutch plate or pack, gearing or other band or pressure brake is provided to selectively permit or prevent the rotation of the sun gear about the transmission axis and relative to the output drive shaft.

Abstract: A vehicular automatic transmission for establishing a plurality of forward gear stages, includes: a transmission case; an input shaft; a transmission mechanism connected to the input shaft and including a plurality of transmission elements; an output shaft connected to the transmission mechanism; first and second clutches at opposite ends of the transmission mechanism and drivably connecting the input shaft with at least one of the transmission elements; and first and second hydraulic servos for applying the first and second clutches responsive to feed of an oil pressure. The transmission case encloses the transmission mechanism, the clutches and the hydraulic servos, and includes axial end walls forming cylinders for the hydraulic servos.

Abstract: The present invention relates to a speed-changing transmission hub for a bicycle comprising: a central shaft; a controlling device; a planetary gear system, which comprises a planet gear holder, holding several planet gears; a second ring gear; a first ring gear; and two sun gears. Variations of speed are realized by separately fixing the sun gears of different diameters. There is no switching of input and no reversal of the rotation of the sun gears. The sun gears only need to be controlled by a one-way clutch guided by the controlling device, which is mounted on the central shaft. Thereby the arrangement is simplified and its weight is reduced.

Abstract: An automatic transmission for a vehicle, as provided a plurality of planetary gear units in which the ratios of the tooth numbers of the sun gears to the tooth numbers of the ring gears are different from each other. In the two sets of planetary gear units in which the ratios of the tooth numbers of the sun gears to the tooth numbers of the ring gears are different from each other, the ring gears are identical to each other in the tooth number, the normal module, the normal pressure angle, the angle of torsion, the pitch radius, the base radius, the bottom diameter, the top diameter, the tooth height, the dedendum, the addendum, the lead, the coefficient of normal shift and the arcuate tooth thickness, and the pinions of those two sets of planetary gear units are identical to each other in at least the arcuate tooth thickness, the coefficient of normal shift, the dedendum, the addendum, the tooth height, the angle of torsion, the normal pressure angle and the normal module.

Abstract: The invention is directed to an arrangement for displacing the parts of an objective with at least one adjusting ring 6. A fine adjusting ring 40 is also provided and there is no switchover device which must be actuated by the operator. The fine adjusting ring 40 is at standstill when it is not actively rotated by the operator. A coarse adjusting ring 6 is rotatably journalled in the housing 10 of an objective. A transmission or gearing for suitably fine adjusting this coarse adjusting ring 6 includes a sun gear wheel 1 mounted fixedly on the objective housing 10, a fine adjusting ring 40 which includes a shaft pin 4 on which planetary gear wheels 2 are journalled and an output gear wheel 3 rotatably mounted on the coarse adjusting ring 6 via a slip clutch 5.

Abstract: An automatic transmission for use with an automotive vehicle having an engine provided with an output shaft, and a differential. The automatic transmission comprises a casing, and first, second and third shafts arranged in the casing. The first shaft is concentrical with the engine output shaft. The second shaft is parallel with the first shaft. The third shaft is concentrical with the second shaft. The third shaft is connected to the differential. A first transfer gear train is provided for transmitting rotation from the first shaft to the second shaft. The automatic transmission also comprises a main transmission unit including planetary gearing having rotary members for providing a plurality of torque delivery paths between the second and third shafts, and friction elements associated with the planetary gearing for selecting one of the torque delivery paths in response to a selected gear position. The planetary gearing is provided on the second shaft.

Abstract: A multispeed automatic transmission for automobile vehicles having parallel input shaft output shaft includes two parallel gearsets and of constant-mesh gearwheels providing two fixed speed ratios. The second speed ratio is higher than the first speed ratio and in same direction. A first power path using the first fixed speed ratio includes a first control clutch and a second control clutch, and a second power path using the second fixed speed ratio includes a third control clutch. Further, the transmission includes a double planetary gearset, a first control brake and a second control brake. Alternatively, the input shaft and output shaft are in alignment and one of the two speed ratios is a direct drive. The transmission features six forward speeds, a braked neutral and a reverse drive.

Abstract: A planetary gear device having a first and a second single-pinion planetary gear unit and a third double-pinion planetary gear unit, which are coaxially disposed so as to provide different speed reduction ratios. The three gear units have respective first, second and third sun gears, respective first, second and third ring gears, and respective first, second and third carriers rotatably supporting planetary pinions. The first and second sun gears are fixed together or selectively connectable to each other, and the first carrier, second ring gear and third carrier are fixed together or selectively connectable to each other. Further, the second carrier and the third sun gear are fixed together or selectively connectable to each other. The present arrangement allows shifting operations of the gear device, without concurrent disengagement and engagement of different clutches.

Abstract: An automatic transmission, in which a gear train including a plurality of planetary gear sets each composed of a sun gear, a carrier and a ring gear is accommodated in a casing so that the transmission of a drive force from an input shaft to an output shaft may be changed to set a plurality of gears. The automatic transmission includes a first brake connected to the carrier of the first one of the plural planetary gear sets for fixing the same to the casing; a first clutch arranged at the same side as is the connecting position of the carrier and the first brake means with respect to the first planetary gear set for connecting the carrier selectively to a rotating member such as the sun gear, carrier or ring gear of one of other planetary gear sets; and a second clutch arranged closer to the first planetary gear set than it is to the first clutch for connecting the sun gear of the first planetary gear set selectively to the rotating member.

Abstract: An automatic transmission including gear trains, which are constructed of at least three planetary gear sets each having three rotating members. A first clutch is arranged closer to an input shaft than the first planetary gear set for connecting any one of the rotating members of the first planetary gear set arranged adjacent to the input shaft. A second clutch is also arranged closer to the input shaft than the first planetary gear set for connecting another of the rotating members of the first planetary gear set and the input shaft. A third clutch is interposed between the first planetary gear set and the second planetary gear set for connecting any one of the rotating members of the second planetary gear set arranged at the opposite side to the input shaft across the first planetary gear set and the any one or the another of the rotating members of either one of the first clutch and the second clutch or the first planetary gear set.