Abstract: To provide an automatic transmission apparatus for forward 8-speed, which keeps a transmission gear ratio step in good balance. The apparatus includes: a first planetary gear device PG0 having a ring gear R0 connected to an input shaft; a second planetary gear device PG1 having a carrier C1 connected to a carrier C0 of the first planetary gear device, and a sun gear S1 connected to R0; a third planetary gear device PG2 having a ring gear R2 connected to C1; a fourth planetary gear device PG3 having a sun gear S3 connected to a sun gear S2 of the third planetary gear device; a first clutch C-1 that selectively connects S2 to the input shaft; a second clutch C-2 that selectively connects C2 to the input shaft; a first brake B-1 that selectively regulates the rotation of R0; a second brake B-2 that selectively regulates the rotation of R2; a third brake B-3 that selectively regulates the rotation of S0; and a fourth brake B-4 that selectively regulates the rotation of R3.

Abstract: A variable speed transmission is disclosed. In one embodiment, a two shaft and two opposing planetary gearset arrangement is utilized. Drive and driven shafts are connected as respective inputs and outputs to opposing planetary gears of the planetary gearsets. Respective sun gears are rotatably coupled to each end of an intermediary shaft which traverses the span between the planetary gearsets. Respective ring gears are meshed to a pair of spur gears coupled to a secondary shaft which also traverses the span. In operation, the coordinated actuation of a pair of clutch-brake assemblies associated with the intermediary and secondary shafts substantially continuously varies the transmission of torque from the drive shaft to the driven shaft.

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 may include clutches and brakes.

Abstract: The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first and second differential gear sets, a battery, two electric machines serving interchangeably as motors or generators, four or five selectable torque transmitting devices, and possibly a dog clutch. The selectable torque transmitting devices are engaged to yield an EVT with a continuously variable range of speeds (including reverse) and at least one mechanically fixed forward speed ratio. The torque transmitting devices and the first and second motor/generators are operable to provide five operating modes in the electrically variable transmission, including battery reverse mode, EVT reverse mode, reverse and forward launch modes, continuously variable transmission range mode, and fixed ratio mode.

Abstract: A hybrid vehicle 20 of the invention is equipped with a power distribution integration mechanism 40 and a transmission 60. The power distribution integration mechanism 40 includes a carrier 45 connecting with a motor MG2, a sun gear 41 connecting with a motor MG1, and a ring gear 42 connecting with an engine 22.

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 may include clutches and brakes.

Abstract: The transmission comprises a sun gear fixed to an input shaft, four pinions, and a carrier part connected to an output shaft. Each pinion has a planetary gear engaged with the sun gear, and planetary gears having the number of teeth different from that of that planetary gear. Each internal gear engaged with these planetary gears can perform a independent rotating motion by the rotation of the input shaft. The braking force is selectively applied to the rotating motion of each internal gear by pressing breaking part by the actuator in selecting a gear for gearshift. Here, the braking force is gradually increased to stop the rotating motion. As a result, the a power interrupter becomes unnecessary and the miniaturization of the transmission can be attained.

Abstract: A powertrain is provided, comprising: an internal combustion engine and an electro-mechanical transmission. The internal combustion engine has two torque output nodes operatively connected to two torque input nodes of the electro-mechanical transmission. The transmission comprises first and second electrical machines operatively connected to first and second planetary gear sets that are selectively operative to transmit torque to an output shaft. The two torque output nodes of the engine comprise an engine block comprising a cylinder with a pair of opposed pistons inserted therein, and each piston operatively connected to one of a first and a second crankshaft. The first and second crankshafts are operatively connected.

Abstract: A multi-speed transmission with nine forward gears and one reverse gear, four planetary gear sets, seven shafts and six shifting elements. The input shaft is coupled to gear sets (P2, P3); shaft (3) is coupled to the carrier of gear set (P2) and the ring of gear set (P1) and is coupleable to the housing (G); shaft (4) is coupled to the ring of gear set (P3), the carrier of gear set (P4) and is coupleable to the housing; shaft (5) couples with gear set (P4) and the ring of gear set (P2) couples the housing (G), and via clutch (57) to shaft (7), which is coupled to the carrier of gear set (P1); shaft (6) is coupled to the carrier of gear set (P3) and coupleable via clutch (26) to output shaft which couples the ring of gear set (P4); the sun of gear set (P1) couples the housing.

Abstract: A power train of an automatic transmission has eight forward gear stages and three reverse gear stages. The power train includes two composite planetary gear sets and seven engagement elements: two clutches and five brakes. Two of the engagement elements are engaged in each gear stage.

Abstract: The transmission 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 includes four planetary gear sets having seven torque-transmitting mechanisms and three fixed interconnections. 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 seven torque-transmitting mechanisms provide interconnections between various gear members and with 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: The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first and second differential gear sets, a battery, three electric machines serving interchangeably as motors or generators and up to three brakes. The three motor/generators are operable in a coordinated fashion to yield an EVT with a continuously variable range of speeds (including reverse). One of the brakes enables series hybrid operation.

Abstract: A transmission can be provided which achieves multiple speeds while maintaining good balance of gear ratio steps between gears by having a first clutch which selectively connects a first intermediate output member and a fourth rotating element RE4 together, a second clutch which selectively connects an input shaft and a second rotating element RE2 together, a third clutch which selectively connects the first intermediate output member and a first rotating element RE1 together, a fourth clutch which selectively connects the input shaft and the first rotating element RE1 together, a fifth clutch which selectively connects a second intermediate output member and the first rotating element RE1 together, a first brake which selectively holds the first rotating element RE1 to a transmission case, and a second brake which selectively holds the second rotating element RE2 to the transmission case.

Abstract: The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first, second and third differential gear sets, a battery, two electric machines serving interchangeably as motors or generators, up to five selectable torque-transfer devices and possibly a dog clutch. The selectable torque transmitting devices are engaged to yield an EVT with a continuously variable range of speeds (including reverse) and up to four mechanically fixed forward speed ratios. The torque transmitting devices and the first and second motor/generators are operable to provide five operating modes in the electrically variable transmission, including battery reverse mode, EVT reverse mode, reverse and forward launch modes, continuously variable transmission range mode, and fixed ratio mode.

Abstract: A multi-speed transmission that achieves nine forward speed ratios and a reverse speed ratio has two planetary gear sets and a plurality of intermeshing gear members which may consist of two additional planetary gear sets or gear members arranged in a countershaft design. A speed ratio of an equal value but with an opposite direction of rotation is achieved at one of the gear members connected with one of the planetary gear members in a reverse ratio as in a first forward speed ratio. Six torque-transmitting mechanisms are employed.

Abstract: A power train of an automatic transmission has eight forward gear stages and three reverse gear stages. The power train includes two composite planetary gear sets and seven engagement elements: two clutches and five brakes. Two of the engagement elements are engaged in each gear stage.

Abstract: A transmission with seven forward gears and one reverse gear comprising an input shaft, an output shaft, three planetary sets, seven rotatable shafts and six shifting elements. The input shaft is connected to the sun gear of the planetary set and can be connected to the fifth shaft, which is connected to the spider of the planetary set. The third shaft can be connected to the sixth shaft. The third shaft can be coupled to the housing and is connected to the spider of the first planetary set. The sixth shaft is connected to the internal gear of the second planetary set and the sun gear of the third planetary set and the seventh shaft is connected to the spider of the second planetary set. The fourth shaft is connected to the sun gear of the planetary set and the output shaft is connected to the internal gear of the planetary set.

Abstract: A shock absorbing device 8 includes a transmitting section 81, first friction plates 82, second friction plates 83, and a dish spring 84. The transmitting section 81 is engaged with the inner cylindrical portion of the second friction plates 83 and also engaged with an outer cylindrical surface of an internal gear 42. The first friction plates 82 are stationarily fixed to an end portion 102a of a central housing. The second friction plates 83 are brought into frictional engagement with the first friction plates 82 under a resilient force applied from the dish spring 84. The first friction plates 82 and the second friction plates 83 are alternately laminated.

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 multi-step transmission comprises an input and output shaft arranged in a housing, three spider supported planetary gear sets, seven rotatable shafts; six switch elements; input occurs via a shaft, in connection with the planet carrier of the first planetary gear set, output occurs via a shaft, in connection with the planet carrier of the second planetary gear set and the planet carrier of the third planetary gear set; a shaft is in connection with the sun gear of the first planetary gear set; a shaft is in connection with the ring gear of the second planetary gear set and the ring gear of the third planetary gear set; a shaft is in connection with the sun gear of the third planetary gear set; a shaft is in connection with the ring gear of the first planetary gear set; a shaft is connected to the sun gear of the second planetary gear set.

Abstract: A hybrid powertrain incorporates an engine, two motor/generator units and three planetary gearsets along with three torque-transmitting mechanisms to provide a two-mode compound-split electrically variable transmission.

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 four 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 multiple gear transmission having a drive shaft (1) and a driven shaft (2), three planetary gear sets (P1, P2, P3), seven rotatable shafts (1, 2, 3, 4, 5, 6, 7) and seven shifting elements (03, 04, 05, 06, 14, 37, 57) comprising four brakes (03, 04, 05, 06) and three clutches (14, 37, 57). Selective engagement of the seven shifting elements (03, 04, 05, 06, 14, 37, 57) produce, from the drive supplied by the drive shaft (1) via the three planetary gear sets (P1, P2, P3), the seven rotatable shafts (1, 2, 3, 4, 5, 6, 7) and the driven shaft (2), different reduction ratios for seven or eight forward gears and one reverse gear.

Abstract: A multiple stage transmission of a planetary design having first, second and third planetary gear sets (P1, P2, P3), at least first, second, third, fourth, fifth and sixth rotatable shafts (1, 2, 3, 4, 5, 6), first and second brakes (03, 04) and first, second, third and fourth clutches (14, 15, 36, 56). Selective engagement of the planetary gear sets (P1, P2, P3), the rotatable shafts (1, 2, 3, 4, 5, 6), the brakes (03, 04) and the clutches (14, 15, 36, 56) produces different reduction ratios between the drive shaft and the driven shaft such that eight forward gears and at least one reverse gear is achieved.

Abstract: The apparatus is a 28 speed, two section, transmission that requires only a single clutch swap for most changeovers between adjacent ratios. It uses a first section with three close ratio forward speeds and one reverse along with a second section that is an 11 speed, wide ratio, transmission. The two transmission sections are arranged in series resulting at least 28 usable forward speeds. The second section includes an intermediate planetary gear set without a ring gear and an output planetary gear set that is a conventional simple planetary gear set with a two sun gears, two planes of planetary gears on a single carrier, and two ring gears.

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 multi-speed transmission includes an input shaft, an output shaft, and three planetary gear sets. The ring gear of the second planetary gear set is integral with the ring gear of the first planetary gear set, and the carrier of the second planetary gear set is continuously connected with the carrier of the first planetary gear set. Six torque-transmitting mechanisms are engaged in combinations of two to establish at least seven forward speed ratios and a reverse speed ratio between the input shaft and the output shaft.

Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least six forward speed ratios and one reverse speed ratio. The transmission family members include four planetary gear sets, two input clutches, eight or nine torque transmitting mechanisms and four fixed interconnections. The invention provides a low content multi-speed dual clutch transmission mechanism wherein the two input clutches alternately connect the engine to realize odd and even number speed ratio ranges. The torque transmitting mechanisms provide connections between various gear members, the fixed interconnections, the input shaft, the output shaft, and the transmission housing, and are operated in combinations of three to establish at least five forward speed ratios and at least one reverse speed ratio.

Abstract: An output shaft supporting structure includes an output shaft having a hollow space opened in one end side, an intermediate shaft whose one end having an insert portion inserted into the hollow space, an extension housing placed on the edge of a casing, a first bearing and a second bearing disposed between the outer peripheral surface of the output shaft and the inner peripheral surface of the extension housing, a third bearing disposed between the outer peripheral surface of the insert portion and the inner peripheral surface of the hollow space. A part of rotational elements of a planetary gear set is supported between the outer peripheral surface of the insert portion closer to one end of the intermediate shaft than the third bearing and the inner peripheral surface of the hollow space, and at least a portion of axial position of the third bearing is located between the first bearing and the second bearing.

Abstract: A family of transmissions incorporating three planetary gearsets and five torque-transmitting mechanisms is effective in a powertrain to produce at least six forward speed ratios and one reverse speed ratio between a transmission input shaft and a transmission output shaft. The planetary gearsets each have three planetary gear members in which two of the planetary gearsets have two members continuously interconnected and one of those planetary gearsets and the remaining planetary gearset have two members continuously interconnected. The remaining planetary gearset has one member continuously connected with the transmission housing and the transmission output shaft is continuously connected with at least one member of the planetary gearsets. The planetary gearsets have members that are selectively interconnected with the transmission input shaft through three selectively engageable torque-transmitting mechanisms.

Abstract: Continuous torque regulator formed by a transmission system and a regulating circuit, wherein the transmission system is formed by three epicycloid gears, in which each one is formed by a planetary gear, a series of satellite pinions and a crown wheel, wherein the second and third planetary gears are rigidly joined, and the satellite gears of the third train are double, the regulating circuit having a pressure pump (Bp) which is joined by means of a pinion to the crown wheel (C1), a control valve (Vc) which is joined by means of a pinion to the shaft of the planetary gear (A1) and a valve (N) which in the event of being actuated torque transmission ceases, the assembly permitting the regulation of torque in a continuous form without steps and without any need for interruption mechanisms, it being possible to interrupt the transmission at will.

Abstract: A transmission arrangement for a vehicle includes a transmission housing with at least two transmission axes extending therein. Each axis includes an input transfer gear engaged with an input clutch, wherein the input clutch is connected to at least one member of a planetary gear set. Each axis also includes an output transfer gear driven by a member of the planetary gear set. A synchronizer-type coupling element is operatively connected on each axis between the input clutch and the planetary gear set for selectively engaging and disengaging members of the planetary gear set with respect to the input clutch and transmission housing.

Abstract: A three-speed gear shifting box for power-driven tools includes a triple gear fitted on an output shaft of an electric motor, and planetary gears are sleeved respectively on three planetary gear shafts of an intermediate gear disk and are meshed respectively with the triple gear and internal gears. A poking spring makes an internal gear regulating ring move and fix one of the internal gears. Gears on the intermediate gear disk mesh with planetary gears on four planetary gear shafts, on the main shaft, and the planetary gears also mesh with the fixed internal gear.

Abstract: Continuous torque regulator formed by a transmission system and a regulating circuit, wherein the transmission system is formed by three epicycloid gears, in which each one is formed by a planetary gear, a series of satellite pinions and a crown wheel, wherein the second and third planetary gears are rigidly joined, and the satellite gears of the third train are double, the regulating circuit having a pressure pump (Bp) which is joined by means of a pinion to the crown wheel (C1), a control valve (Vc) which is joined by means of a pinion to the shaft of the planetary gear (A1) and a valve (N) which in the event of being actuated torque transmission ceases, the assembly permitting the regulation of torque in a continuous form without steps and without any need for interruption mechanisms, it being possible to interrupt the transmission at will.

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: The synchronous or asynchronous electrical machine for an internal combustion engine can operate alternately in a starter mode during engine starting and a generator mode during engine operation in order to eliminate the need for a separate starter and generator. The electrical machine includes a two-stage planetary gear device coupled to a shaft of the internal combustion engine. The two-stage planetary gear device includes two stages with ring gears and respective braking devices assigned to the two stages that prevent the ring gears of those stages from rotating when engaged therewith. The two-stage planetary gear device operates with different gear ratios in the starter mode and the generator mode. The gear ratio in the starter mode is between 4 and 60 and between 1.6 and 4 in the generator mode. The ratio of the gear ratios in the starter mode and the generator mode must be at least two.

Abstract: A transmission assembly having a first, a second, a third, and a fourth planetary gear set is disclosed. The transmission assembly further includes an input shaft which drives the sun gear of the first planetary gear set, a first member which connects the planet carrier of the third planetary gear set and the ring gear of the fourth planetary gear set, and a second member which connects the sun gear of the third planetary gear set to the sun gear of the fourth planetary gear set. The transmission assembly yet further includes a third member which connects the ring gear of the first planetary gear set to (i) the planet carrier of the second planetary gear set and (ii) the ring gear of the third planetary gear set. The transmission assembly still further includes a fourth member which connects the planet carrier of the first planetary gear set to the sun gear of the second planetary gear set and an output shaft driven the planet carrier of the fourth planetary set.

Abstract: A self-shifting transmission apparatus having a rotational drive and a rotational output spindle. A first transmission gear and an overrunning clutch are rotatably connected in series between the rotational drive and the rotational output spindle. A centrifugal clutch is rotatably connected in series between the rotational drive and the rotational output spindle. The centrifugal clutch is rotatably connected to a shaft which rotates in the overrunning clutch such that upon the drive rotating at and above a predetermined rotational speed, the centrifugal clutch engages to rotate the output spindle while rotating the shaft to overrun within the overrunning clutch. Upon the drive rotating below the predetermined rotational speed, the centrifugal clutch disengages thereby permitting the overrunning clutch to engage the shaft and rotate the output spindle through the first transmission gear.

Abstract: A five speed planetary transmission has a simple planetary gear set, a compound planetary gear set and six torque transmitting devices which are engaged in combinations of three to provide five forward ratios and one reverse ratio. The planetary gear sets are interconnected with a continuous drive connection and one of the torque transmitting devices. Two of the transmitting devices are input clutches and the other three are brakes. The planetary carrier assembly member of the simple planetary gear set is the only member connected with the output shaft during all of the ratios. The ratio interchanges in both single step and double step forward interchanges are of the single transition type.

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

Abstract: A geartrain for a five-speed automatic transmission includes a first compound planetary gear unit comprising first and second simple planetary gearsets having first, second and third operating elements, the first operating element acting as an input element and a second compound planetary gear unit comprising third and fourth simple planetary gearsets having fifth, sixth, seventh and eighth operating elements. The fifth operating element acts as an output element. The sixth operating element is variably connected to either the first operating element or the second operating element, and the eighth operating element is fixedly connected to the third operating element. Clutches for variably connecting the sixth operating element to either the first operating element or the second operating element are provided. Brakes for selectively connecting at least one of the operating elements of the first and second planetary gear units to a transmission housing are provided.

Abstract: A planetary gear transmission comprises first, second and third planetary gear trains G1, G2 and G3 which are disposed coaxially with one another and respectively in this order from an input member. The first and second ring gears R1 and R2, which are fixedly retainable by a first brake B1, are disengageably connected to the input shaft 1 through a first clutch K1. The first sun gear S1 is also disengageably connected to the input shaft 1 through a third clutch while the first carrier C1 and the second sun gear S2 are connected to the output shaft 7. Furthermore, a connecting shaft 4 is disposed away from and in parallel with the axis of the first, second and third planetary gear trains G1, G2 and G3, and one end of the connecting shaft is connected to the input shaft 1 through a first connecting gear train 2 and 3 while the other end of the connecting shaft is connected to the third sun gear S3 through a second connecting gear train 5 and 6.

Abstract: A planetary transmission is disclosed including a front section having a first, a second, and a third planetary gear set each having a sun gear, a planet carrier and a ring gear. An input shaft is connected to at least two of the sun gears and the carrier of the third planetary gear set serves as the output. The front section of the transmission is operatively connected to a rear section for multi-speed use particularly adaptable to trucks or other machines.

Abstract: Multi-stage change of speed between an input shaft and an output shaft on the same axis in a casing is achieved by planetary gear systems provided in multi-stages on the same axis in the casing. Sun gears 4 of plural groups of the planetary gear systems, having different velocity ratios, are fixed to one shaft. Carriers of each group of the planetary gear systems are connected to the other shaft to rotate as one body. A braking device can brake an internal gear of each group of the planetary gear systems individually, thus causing only the planetary gear system of a desired velocity ratio to perform transmission of rotation.

Abstract: A kinematic arrangement of a multiple-speed automatic transmission for an automotive vehicle includes three simple planetary gear units, hydraulically actuated clutches and brakes applied and released selectively, and an overrunning clutch that produces a one-way drive connection between the sun gear of the first gear unit and a nonrotating member, such as the transmission casing. Each planetary gear unit includes a sun gear, a ring gear surrounding the sun gear, a carrier, and a set of planet pinions in continuous meshing engagement with the sun gear and ring gear and rotatably supported on the carrier.

Abstract: A reversible power wrench includes a housing (10), a rotation motor, and a power transmission coupling the motor to an output shaft (21), and further includes a reduction gearing (20) with first planetary gearing (28) for transferring torque in the "forward" direction of rotation and a second planetary gearing (29) for transferring torque in the "reverse" direction of rotation. The first and second planetary gearings (28, 29) have rotationally interconnected sun gears (31, 39) and a common planet wheel carrier (34).

Abstract: A planetary gear transmission has a single sun gear, two ring gears and a carrier assembly having a first pinion gear meshing with the sun gear and one ring, and a second pinion gear meshing with the first pinion gear and the second ring gear. The carrier assembly is continuously connected with a transmission output shaft. Input drive to the planetary gearing is provided through two selectively operable rotating clutches which are connectable with the sun gear and one ring gear, respectively. The sun gear and both ring gears are provided with selectively operable brakes for establishing reaction members within the planetary gear arrangement. In another embodiment of the planetary transmission, a second input drive path is provided through a third selectively operable rotating clutch which is connectable with the other ring gear.

Abstract: A final drive for a multi-speed power transmission has freewheeler timed up and down forward power shifts utilizing two planetary gear sets connected between the transmission and differential. For low ratio a smaller diameter sun gear of a first gear set is driven through a freewheeler with the associated ring gear held for reaction so that the pinion carrier assembly drives the differential at a low ratio. For high ratio, a larger diameter sun gear of a second gear set is directly driven while a high-reverse clutch holds the associated ring gear for reaction. The pinion carrier assembly common to both gear sets drives the differential at a higher speed ratio as the freewheeler overruns on torque reversal. The ring gear of the second gear set of one embodiment has a path to ground through an additional freewheeler for coast control. The outer race of the low-ratio freewheeler has external teeth to park-lock the associated sun gear through a grounded parking pawl.

Abstract: An automatic transmission for passenger cars has input and output shafts in alignment, three planetary gearsets, first, second and third control clutches and first and second control brakes, and can be coupled to a torque converter with or without a lock-up clutch. Five forward gears and a reverse drive are provided, with excellent ratio progression and high design versatility. As a rule, a direct drive available between third and fourth gears is not used. A first one-way clutch can be added in parallel with the first control brake to facilitate first/second and second/first power-on gearshifts. A second one-way clutch can be added in parallel with the second control clutch to facilitate fourth/fifth and fifth/fourth power-on gearshifts, without requiring an additional control clutch to be mounted in series to release it in other gears. The transmission is remarkably compact and can easily be substituted for existing four-speed transmissions.

Abstract: A dual permanent magnet generator (10) is provided with a differential gear arrangement (20) comprising two ring gears (21, 26), two planetary gears (30, 31) and a carrier (32) which is splined to an input shaft (12) in the generator (10) so as to rotate the carrier (32) at the same speed as the input shaft (12) while allowing the input shaft (12) to shift axially. One of the ring gears (21) has a threaded connection (18, 38) with the input shaft (12). Consequently, as either the ring gear (21) or the ring gear (26) is slowed down through the application of a resistive load on small generators (22, 23 and 27, 28) associated with the respective ring gears (21, 26), the threaded connection (18, 38) will cause the input shaft (12) to move axially in one of two directions and, via lefthand and righthand spline connections (15, 16) between the input shaft (12) and main rotors (13, 13'), cam the rotors (13, 13') to shift into and out of phase with respect to each other.