Abstract: An automatic transmission includes a first planetary gear set including a first sun gear, a first pinion, a second pinion, and a common ring gear, and includes a second planetary gear set including a second sun gear, the second pinion, and the common ring gear. The transmission includes a third planetary gear set including a third sun gear, a third pinion, and a ring gear of the third set, and includes a fourth planetary gear set including a fourth sun gear, a fourth pinion, and a ring gear of the fourth set. The transmission also includes a first planetary carrier rotatably supporting the first pinion, the second pinion, and the third pinion. The common ring gear is directly connected to the ring gear of the fourth set, and a second planetary carrier rotatably supports the fourth pinion and is directly connected to the ring gear of the third set.

Abstract: The present invention relates to a multispeed transmission, having an input element (5), an output element (35), a Simpson planetary gearset (30), which has a common sun wheel (S2b, S3), two annuluses (R2b, R3) and two planet carrier arrangements (P2b, P3), and an overdrive planetary gear (10), which has a sun wheel (S1), a planet carrier arrangement (P1) and an annulus (R1) and is connected in series with the Simpson planetary gearset (30). The multispeed transmission furthermore has an underdrive planetary gear (20), which has a sun wheel (S2), a planet carrier arrangement (P2) and an annulus (R2) and is connected in series with the Simpson planetary gearset (30) and the overdrive planetary gear (10).

Abstract: An automatic transmission includes a double-pinion planetary gearset and two single-pinion planetary gearsets. A first ring gear is held stationary. A second sun gear and a third ring gear are coupled to a first sun gear and a first carrier respectively, constituting first and second rotor units. An output is coupled to a third carrier. A first clutch selectively couples a second carrier to the first rotor unit. A second clutch selectively couples the second carrier to the second rotor unit. A third clutch selectively couples an input to the second carrier. A fourth clutch selectively couples a second ring gear to a third sun gear. A fifth clutch selectively couples the second ring gear to the third carrier. A sixth clutch selectively couples the input to the third sun gear. Nine forward gear ratios and one reverse gear ratio are obtained by simultaneous application of three of the clutches.

Abstract: A transmission of the present invention has 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 a sun gear, a carrier member supporting a plurality of planet pinion gears and a ring gear member. The torque transmitting devices may include clutches and brakes. The torque transmitting devices are selectively engageable in combinations of at least three to establish a plurality forward speed ratios and at least one reverse speed ratio.

Abstract: An automatic transmission includes a first planetary gear set; a second planetary gear set; a third planetary gear set; an input shaft; an output shaft; and five friction elements. A first ring gear is constantly locked. A third carrier is connected with a second ring gear to define a rotating member. The input shaft is constantly connected with a second carrier, and the output shaft is constantly connected with the rotating member. The five friction elements are adapted to selectively connect among the carriers, ring gears and sun gears. Each of at least seven forward speed-ratios and one reverse speed-ratio is achieved by an engaged state of two friction elements selected from the five friction elements.

Abstract: A variable transmission comprises a main shift part and a shift mechanism. The main shift part comprises at least an inner gear ring (B) with variable tooth-number which is connected with the shift mechanism. Said inner gear ring (B) is composed of a number of teeth and a pair of tapered discs (7,8) which are coaxially with said gear ring and the teeth are inter-connected to form a curled rack (3). The two side surfaces of the inner gear ring (B) are closely contacted with the facing walls of the two tapered discs (7,8), therefore the inner gear ring (B) is maintained as a circular ring. The end of the rack (3) is connected to the shift mechanism, and the inner gear ring (B) is engaged with a main planetary gear train disposed coaxially. The transmission ratio of the main planetary gear train varies with the change of the tooth-number of the inner gear ring (B).

Abstract: A transmission of the present invention has 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 may include clutches and brakes. The torque transmitting devices are each selectively engageable in combinations of at least three to establish a plurality forward speed ratios and at least one reverse speed ratio.

Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, two external gear sets or sprocket 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. Each of the external gear sets includes first and second members. The torque transmitting devices include clutches and brakes.

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 hybrid transmission is configured to transfer mechanical power to an output member and includes an input member, an output member, and a transmission case circumscribing first and second differential gear sets, each differential gear set including a plurality of meshingly engaged rotatable elements. The first differential gear set is configured with four nodes for transferring mechanical power, and the second differential gear set is configured with three nodes for transferring mechanical power. Two of the four nodes of the first differential gear set are continuously interconnected to two of the three nodes of the second differential gear set. A first torque transfer clutch is configured to selectively connect the input member to an internal combustion engine. First and second brake devices are configured to selectively interconnect elements of the first and second differential gear sets, the transmission case, the input member, and the output member.

Abstract: A transfer case having a planetary gear set, a clutch collar, and an actuator. The actuator is configured to actuate the clutch collar between a low speed range position in which the clutch collar engages a planet gear carrier of the planetary gear set, and a high speed range position in which the clutch collar engages a sun gear of the planetary gear set.

Abstract: A front wheel drive 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 a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and a brake arranged within a transmission housing. Each of the clutches and the brake are located within specific areas defined by the planetary gear sets and the housing walls.

Abstract: A split-axis transmission may include two planetary gear sets to provide two parallel torque paths from an input axis to an output axis. Thus, the split-axis transmission may provide the ratio preselection capability and the low power losses of a dual-clutch transmission, while also providing the ratio-changing control and smoothness of a traditional powershift automatic transmission.

Abstract: A transmission includes an input and output member, four planetary gear sets each having first, second and third members, five interconnecting members continuously interconnecting members of the four planetary gear sets and six torque transmitting mechanisms selectively engageable to interconnect one of the first members, second members, and third members with at least one of another of the first members, second members, third members, and a stationary member. The torque transmitting mechanisms are selectively engageable in combinations of at least two to establish at least nine forward speed ratios and at least one reverse speed ratio between the input member and the output member.

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

Abstract: A multi-stage transmission comprising planetary gear sets (P1, P2, P3, P4), shafts, and shift elements. The sun gear of gearset (P1) couples housing (G), the carrier of gearset (P1) couples shaft (3) which couples housing (G), via brake (03), and shaft (1) via clutch (13) and shaft (5) via clutch (35). Shaft (5) couples the ring gear of gearset (P2) and the sun gears of gearsets (P3, P4). Shaft (1) couples the sun gear of gearset (P2) and the carrier of gearset (P3). Shaft (6) couples the carrier of gearset (P2) and the ring gear of gearset (P1), the ring gear of set (P4) couples shaft (4) which couples housing (G) via brake (04), and output shaft (2) couples the carrier of gearset (P4) and shaft (7), which couples, via clutch (27), the ring gear of gearset (P3).

Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and six torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes.

Abstract: The present invention provides a multiple speed automatic transmission having an input member, an output member and four planetary gear assemblies each including a sun gear, a planet gear carrier with a plurality of planet gears and a ring gear. The transmission also includes four friction brakes and two friction clutches. The transmission further includes a plurality of fixed or rigid connections. A first connection couples the ring gear of the first planetary gear assembly to the sun gear of the second planetary gear assembly. A second connection couples the planet gear carrier of the first planetary gear assembly to the planet gear carrier of the second planetary gear assembly. A third connection couples the ring gear of the third planetary gear assembly to the sun gear of the fourth planetary gear assembly. A fourth connection couples the planet gear carrier of the third planetary gear assembly to the planet gear carrier of the fourth planetary gear assembly.

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

Abstract: A transmission is provided having an input member, an output member, at least one planetary gear set, a plurality of transfer gears connected by a layshaft, 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.

Abstract: A transmission of the present invention has 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 may include clutches and brakes. The torque transmitting devices are selectively engageable in combinations of at least three to establish at least nine forward speed ratios and at least one reverse speed ratio.

Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, two external gear sets or sprocket 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. Each of the external gear sets includes first and second members. The torque transmitting devices include clutches and brakes.

Abstract: A front wheel drive 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 a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and a brake arranged within a transmission housing. Each of the clutches and the brake are located within specific areas defined by the planetary gear sets and the housing walls.

Abstract: An automatic transmission includes a first planetary gear set; a second planetary gear set; a third planetary gear set; an input shaft; an output shaft; and five friction elements. A first ring gear is constantly locked. A third carrier is connected with a second ring gear to define a rotating member. The input shaft is constantly connected with a second carrier, and the output shaft is constantly connected with the rotating member. The five friction elements include a first friction element adapted to selectively connect a first carrier with a third ring gear; a second friction element adapted to selectively connect a first sun gear with the second carrier; a third friction element adapted to selectively connect the first sun gear with a second sun gear; a fourth friction element adapted to selectively connect the first carrier with the second carrier; and a fifth friction element adapted to selectively connect the first carrier with the second sun gear.

Abstract: A transmission of the present invention has 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 two to establish at least ten forward speed ratios and at least one reverse speed ratio.

Abstract: A transmission of the present invention has 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 may include clutches and brakes. The torque transmitting devices are each selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio.

Abstract: A multispeed transmission includes a sun gear, at least one high-speed planetary gear in constant mesh with the sun gear and a high-speed ring gear, where the high-speed planetary gear orbits around the sun gear. The multispeed transmission also includes at least one low-speed planetary gear coupled with the high-speed planetary gear and in constant mesh with a low-speed ring gear and a carrier rotationally engaged with the high-speed planetary gear and the low-speed planetary gear such that either the high-speed planetary gear or the low-speed planetary gear controls rotation of the carrier. The multispeed transmission further includes a transmission case that surrounds the high-speed ring gear and the low-speed ring gear and a clutch located proximate to the high-speed ring gear and the low-speed ring gear, where the clutch selectively couples the high-speed ring gear or the low-speed ring gear with the transmission case.

Abstract: A composite planetary transmission section (P) is provided for synthesizing output from a stepless speed changing section (20) with an engine drive force. In a transmission line from the planetary transmission section (P) to an output rotational body (90), there are provided first clutch mechanism (60), a second clutch mechanism (70), a speed-reducing planetary transmission mechanism (80), an operable coupling clutch mechanism (110) and an output clutch mechanism (120). A ring gear (83) of the speed-reducing planetary transmission mechanism (80) includes a brake mechanism (100). A sun gear (43) of the planetary transmission section (P), an input side rotational member (62) of the first clutch mechanism (60), an input side rotational member (71) of the second clutch mechanism (70), a sun gear (84) of the speed-reducing planetary transmission mechanism (80), and an input side rotational member (122) of the output clutch mechanism (120) are rotatable about a common rotational axis.

Abstract: An improved eight speed chainless drive includes a gear case housed within the hub of the driving wheel of a utility tricycle with a drive shaft on the axis of the wheel. Three counter shafts rotatably mounted on ball bearings in the gear case are equally spaced around the drive shaft with six gears fixed on each counter shaft. The two gears on one end of each counter shaft are in constant mesh with two drive gears which can be selectively locked to the drive shaft, and the four gears on the other end are in constant mesh with four gears rotating freely on a driven gear carrier rotatably mounted on a ball bearing on the drive shaft, with provisions for selectively locking any one of the four to the driven gear carrier. Spring-loaded pawls mounted on steel pins in the end of the driven gear carrier engage a ratchet ring fixed in the wheel hub for driving the wheel.

Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, two external gear sets or sprocket 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. Each of the external gear sets includes first and second members. The torque transmitting devices include clutches and brakes.

Abstract: A transmission is provided having an input member, an output member, 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. The torque transmitting mechanisms are 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 gear train of an automatic transmission for a vehicle may include first and second planetary gear sets arranged on a first shaft, a third planetary gear set arranged on a second shaft, which may be parallel to the first shaft and connected to the first and second planetary gear sets through first and second transfer gears, and a plurality of friction members, and the gear train of an automatic transmission for a vehicle realizes eighth forward speeds and one reverse speeds.

Abstract: A transmission is provided having an input member, an output member, 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. The torque transmitting mechanisms are selectively engageable in combinations of at least three to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output 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. Further, a hydraulic fluid control circuit is provided for controlling the operation of the plurality of torque-transmitting devices. The hydraulic fluid control circuit receives pressurized hydraulic fluid from an off-axis hydraulic fluid pump and has a plurality of fluid passages disposed in the transmission house, input member and other coupling members.

Abstract: A transmission of the present invention has 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 may include clutches and brakes. The torque transmitting devices are selectively engageable in combinations of at least three to establish at least ten forward speed ratios and at least one reverse speed ratio.

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

Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of interconnecting members, and five torque transmitting mechanisms. The planetary gear sets include first, second and third members. The plurality of interconnecting members each continuously interconnect one of the first, second and third members of the planetary gear sets with another one of the first, second and third members of the planetary gear sets, and a stationary member. The torque transmitting mechanisms are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.

Abstract: A transmission is provided having an input member, an output member, an intermediate member, four planetary gear sets, a plurality of interconnecting members, and five torque transmitting mechanisms. The planetary gear sets include first, second and third members. The plurality of interconnecting members each continuously interconnect one of the first, second and third members of the planetary gear sets with another one of the first, second and third members of the planetary gear sets, and a stationary member. The torque transmitting mechanisms are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.

Abstract: The multi-step transmission including four gear sets, eight shafts, and six shifting elements. The sun gear of gearset (P1) communicates, via shaft (8) and clutch (48), with shaft (4), which communicates, via clutch (14), with shaft (1), that couples the sun gear of the gearset (P4), and communicates, via brake (04), with a housing. The ring gear of gearset (P1) couples shaft (1), and communicates, via clutch (17), with shaft (7), which couples the carriers of the gearsets (P3, P2). The carrier of gearset (P1) is connected, via shaft (6), to a component, which connects the ring gear of gearset (P4) to the sun gear of gearset (P3). The carrier of gearset (P4) communicates, via shaft(3) and brake (03), with the housing. The sun gear of gearset (P2) communicates, via shaft (5) and brake (05), with the housing. The output shaft couples the ring gears of gearsets (P3, P2).

Abstract: The present invention is a three forward speed gearbox with reverse from a single planetary gearset. The forward speed ratios include a low gear, one to one, and overdrive. The reverse gear ratio is identical with the low gear. Forward rotation of the output shaft in first gear is accomplished by reversing the direction of the input motor. This is easily achieved from a bi-directional prime mover such as a hydraulic motor or electric motor. Another advantage of using a bi-directional prime mover is that the bi-directional rotation of the input shaft provides forward, reverse and back drive to accumulate energy in an accumulator.

Abstract: The hybrid transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The hybrid transmission includes a motor/generator, three planetary gear sets, five torque-transmitting devices, one fixed interconnection, three external gear sets and a final drive gear set. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with one of the external gear sets. The five torque-transmitting devices provide interconnections between various planetary and external gear members, the input shaft, and the transmission housing, and are operated in combinations of three to establish eight forward speed ratios and one reverse speed ratio.

Abstract: A transmission is provided having an input member, an output member, 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.

Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The transmission includes four planetary gear sets having five torque-transmitting mechanisms, two fixed interconnections and two grounded members. The powertrain includes an engine and torque converter that is continuously connected 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 five torque-transmitting mechanisms provide interconnections between various gear members, and are operated in combinations of three to establish at least eight forward speed ratios and at least one reverse speed ratio.

Abstract: A transmission is provided having an input member, an output member, 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.

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 a brake. The torque transmitting mechanisms are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.

Abstract: The invention relates to a multi-gear transmission for bicycles, comprising a plurality of crown gear transmissions (a, b) for providing different transmission ratios, with at least two crown gears (3, 9, 61a, 62a, 63a, 61b, 62b, 62c), a shifting device (2; 2a, 2b, 722) for selectively connecting the crown gears (3, 9, 61a, 62a, 63a, 61b, 62b, 62c) to fixed and/or rotating drive elements (1, 10, 12, 31, 100) and a plurality of pinions (4a, 4b) disposed between the crown gears (3, 9, 61a, 62a, 63a, 61b, 62b, 62c), each of said pinions being mounted on a pinion carrier (5a, 5b) rotatable about axes (51a, 51b) that are perpendicular the rotating axis of the crown gears (3, 9, 61a, 62a, 63a, 61b, 62b, 62c) and being engaged with the crown gears (3, 9, 61a, 62a, 63a, 61b, 62b, 62c).

Abstract: A two-stage machine tool transmission, in particular a spindle drive transmission, includes a planetary gearset in which a spindle or a spindle insert can be connected to a drive output of a transmission, which has a first drive output shaft and the second drive output shaft, such that the first drive output shaft is connected in a rotationally fixed manner to a drive input shaft and can optionally be connected, via a first shift element, to a sun gear of the planetary gearset. The second drive output shaft is connected in a rotationally fixed manner to a carrier of the planetary gearset. A ring gear of the planetary gearset is connected in a rotationally fixed manner to the transmission housing and a second shift element is provided such that a connection between the spindle or a spindle insert and, optionally, the first or the second drive output shaft, is possible.

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

Abstract: In a transmission, particularly a motor vehicle transmission, having a first, a second, a third, and a fourth planetary gear unit disposed along a main axis of rotation and having six clutch units providing for nine forward gears to be engaged, a drive unit is connected for rotation with a sun gear of the second planetary gear unit and a fourth planetary carrier of the fourth planetary gear transmission and further a power output unit is rotationally fixedly connected to a third planetary carrier of the third planetary gear unit.

Abstract: A multiple speed transmission for an automotive vehicle includes an input and an output, a planetary gear system comprising first, second and third planetary gear units, each gear unit including a sun gear, a ring gear, planet pinions meshing with the sun gear and ring gear, and a carrier rotatably supporting the planet pinions. A forward clutch releasably connects the carrier of the second gear unit and the carrier of the third gear unit. A second clutch releasably connects the carrier of the first gear unit to the ring gear of the second gear unit. A third clutch releasably connects the ring gear of the third gear unit to the carrier of the second gear unit. First brake releasably holds the carrier of the third gear unit against rotation.