61 |
Multi-speed transmission with compound and simple planetary gear sets and with layshafts |
US12954939 |
2010-11-29 |
US08360925B2 |
2013-01-29 |
Alexander Filippovich Kraynev; Vladimir Konstantinovich Astashev; Konstantin Borisovich Salamandra; Madhusudan Raghavan |
A transmission is provided that includes a first compound planetary gear set and a second simple planetary gear set. An input member, an output member and the planetary gear sets are arranged coaxially with one another to define a first axis of rotation. A first and a second layshaft are arranged coaxially with one another to define a second axis of rotation. A first set of intermeshing gears transfer torque from the input member to the first layshaft. A second set of intermeshing gears transfer torque from the second layshaft to the second planetary gear set. Seven torque-transmitting mechanisms are engagable in different combinations to establish multiple forward speed ratios and a reverse speed ratio between the input member and the output member. |
62 |
Automatic transmission |
US12216425 |
2008-07-03 |
US08298111B2 |
2012-10-30 |
Hiroshi Kato; Masaaki Nishida |
An automatic transmission includes an input shaft, an acceleration/deceleration output unit that is coupled to the input shaft and has a first element that selectively outputs a decelerated rotation or an accelerated rotation of the input shaft and a second element that outputs a same number of rotations as the input shaft, a multiple planetary gear set for shifting having third, fourth, fifth and sixth elements, a first clutch coupling the first element and the sixth element selectively, a second clutch coupling the input shaft and the fourth element selectively, a third clutch coupling the first element and the third element selectively, a fourth clutch coupling the second element and the third element selectively, a first brake fixing the third element selectively, a second brake fixing the fourth element selectively and an output shaft coupled directly to the fifth element. |
63 |
Eight to thirteen speed automatic transmission |
US12685532 |
2010-01-11 |
US08152683B2 |
2012-04-10 |
Andrew W. Phillips |
An eight, nine, eleven or thirteen speed automatic transmission has an input and output, four planetary gear assemblies, four connecting members for coupling certain elements of the planetary gear assemblies to other elements, four brakes for selectively connecting certain elements of the planetary gear assemblies to ground and three friction clutches for selectively connecting certain elements of the planetary gear assemblies to other elements. Sequenced operation of the brakes and clutches provides, eight, nine, eleven or thirteen forward speeds or gear ratios and reverse. |
64 |
MULTISTAGE TRANSMISSION |
US13322561 |
2010-05-26 |
US20120071290A1 |
2012-03-22 |
Donghwan Byun |
The present invention relates to a multistage transmission, comprising: a center shaft arranged in a frame such that the center shaft does not rotate; an input member arranged coaxially to the center shaft such that the input member is rotatable; a hub arranged coaxially to the center shaft such that the hub is rotatable; an epicyclic gear set which is coupled to the input member and mounted on the hub, and which is arranged coaxially to the center shaft such that the epicyclic gear set is rotatable, and which has at least two pairs of epicyclic gears, wherein each of the epicyclic gears has a sun gear, a ring gear, a satellite carrier and a pinion; an axial clutch which is involved in the operation of the sun gear which is selectively coupled to or separated from at least one of the peripheral members; a clutch assembly in which at least one of the clutches in a rotating direction are arranged in correspondence with the respective sun gears, wherein said clutches in the rotating direction are involved in the operation of the sun gear which is selectively coupled to or separated from the center shaft; and a transmission shaft which has a hollow portion and a plurality of radial through-holes, and which covers the center shaft and rotates to select a rotating direction, and which is involved in the operation of the clutch assembly. The multistage transmission of the present invention provides two or more gear ratios between the input member and the hub in accordance with the rotating direction of the transmission shaft. |
65 |
MULTI-SPEED TRANSMISSION WITH COMPOUND AND SIMPLE PLANETARY GEAR SETS AND WITH LAYSHAFTS |
US12954939 |
2010-11-29 |
US20110212807A1 |
2011-09-01 |
Alexander Filippovich Kraynev; Vladimir Konstantinovich Astashev; Konstantin Borisovich Salamandra; Madhusudan Raghavan |
A transmission is provided that includes a first compound planetary gear set and a second simple planetary gear set. An input member, an output member and the planetary gear sets are arranged coaxially with one another to define a first axis of rotation. A first and a second layshaft are arranged coaxially with one another to define a second axis of rotation. A first set of intermeshing gears transfer torque from the input member to the first layshaft. A second set of intermeshing gears transfer torque from the second layshaft to the second planetary gear set. Seven torque-transmitting mechanisms are engagable in different combinations to establish multiple forward speed ratios and a reverse speed ratio between the input member and the output member. |
66 |
Planetary gear mechanism for a bicycle |
US12660861 |
2010-03-05 |
US20110177912A1 |
2011-07-21 |
Alexander Serkh; Dean Schneider |
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. |
67 |
Transmission for tractor |
US12068997 |
2008-02-14 |
US07874224B2 |
2011-01-25 |
Hyo-jung Kim; Hyung-tai Kim; Sang-heon Lee |
A transmission for a tractor has an input shaft receiving power from an engine, an idle shaft disposed parallel with the input shaft, an output shaft disposed parallel with the idle shaft and transmitting power to a main transmission part, forward/reverse driving gears installed on the input shaft so as to rotate idle, a forward/reverse clutch installed between the forward driving gear and the reverse driving gear to selectively connect the forward driving gear or the reverse driving gear to the input shaft, a forward driven gear installed on the idle shaft and engaged with the forward driving gear, a reverse driven gear installed on the idle shaft and engaged with the reverse driving gear, high speed/low speed driving gears installed between the forward driven gear and the reverse driven gear so as to rotate idle, a high speed/low speed clutch installed between the high speed driving gear and the low speed driving gear to selectively connect the high speed driving gear or the low speed driving gear to the idle shaft, and high speed/low speed driven gears installed on the output shaft and engaged with the high speed driving gear and the low speed driving gear, respectively. |
68 |
SUPERPOSITION TRANSMISSION |
US12793664 |
2010-06-03 |
US20110015022A1 |
2011-01-20 |
Dieter Stoeckl; Heinz Aitzetmueller |
The present invention relates to a superposition transmission in several variants and embodiments with hydrostatic-mechanical or electric-mechanical power splitting for the use in vehicles and work machines such as municipal vehicles, handling devices such as telehandlers or forklifts, wheel loaders, tractors and comparable apparatuses, in which an infinitely variable adjustment of the gear ratio is desired independent of the speed of the drive engine. The input shaft (1) is connected with a variator which is in operative connection with two summing planetary gears (12) and (13) arranged parallel with respect to each other. The output occurs in all driving speeds and all driving ranges via the planet carrier arranged as carrier (18). |
69 |
EIGHT TO THIRTEEN SPEED AUTOMATIC TRANSMISSION |
US12685532 |
2010-01-11 |
US20100331138A1 |
2010-12-30 |
Andrew W. Phillips |
An eight, nine, eleven or thirteen speed automatic transmission has an input and output, four planetary gear assemblies, four connecting members for coupling certain elements of the planetary gear assemblies to other elements, four brakes for selectively connecting certain elements of the planetary gear assemblies to ground and three friction clutches for selectively connecting certain elements of the planetary gear assemblies to other elements. Sequenced operation of the brakes and clutches provides, eight, nine, eleven or thirteen forward speeds or gear ratios and reverse. |
70 |
MULTI-SPEED TRANSMISSION WITH SELECTABLE ONE-WAY BRAKING CLUTCH |
US12404670 |
2009-03-16 |
US20100234166A1 |
2010-09-16 |
Farzad Samie; Chunhao J. Lee |
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. |
71 |
MULTI-SPEED TRANSMISSIONS |
US12388925 |
2009-02-19 |
US20100210404A1 |
2010-08-19 |
Andrew W. Phillips; Scott H. Wittkopp; James M. Hart; Clinton E. Carey |
The transmission has a plurality of members that can be utilized in powertrains to provide at least ten forward speed ratios and one reverse speed ratio. The transmission includes four planetary gear sets, six torque-transmitting devices, and three fixed interconnections. 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 another one of the planetary gear members. The six torque-transmitting devices provide interconnections between various gear members and the transmission housing, and are operated in combinations of three to establish at least ten forward speed ratios and one reverse speed ratio. |
72 |
Power train of automatic transmission |
US12014246 |
2008-01-15 |
US07736262B2 |
2010-06-15 |
Hyunseung Suh |
The present invention relates to a power train of an automatic transmission that outputs twelve forward speeds and three reverse speeds by operations of first and second input units, first and second output units, and a plurality of friction members that connect operating members of the first and second input units and the first and second output units to an input shaft, other operating members of the first and second input units, and the first and second output units, or a case. |
73 |
MULTI-GROUP TRANSMISSION OF A MOTOR VEHICLE |
US12477162 |
2009-06-03 |
US20090305833A1 |
2009-12-10 |
Alan DITTRICH; Rayk HOFFMANN |
A multi-group transmission of a vehicle is arranged in a drivetrain and includes traction force support during gearshift operations. A clutch mechanism, including a frictional clutch and two shifting clutches is arranged between a drive motor with a driveshaft and a transmission input shaft, such that the driveshaft can be connected to the transmission input shaft by one shifting clutch in a first shift position in combination with the frictional clutch or in a second shift position with bridging of the frictional clutch, such that the driveshaft can be directly connected to a main transmission shaft by the other shifting clutch in a shift position in active combination with the frictional clutch. In a method for operating the transmission, the frictional clutch is controlled and operated in combination with the first shifting clutch as a starting clutch and with the second shifting clutch as an intermediate-gear clutch. |
74 |
Group transmission for a motor vehicle |
US12378488 |
2009-02-13 |
US20090205450A1 |
2009-08-20 |
Carsten Gitt |
In a group transmission having a number of countershafts, wherein three input constants are provided on a transmission input shaft for driving a countershaft such that the group transmission is of very short construction, the transmission input shaft is connectable to an intermediate shaft for direct power transmission, with the countershaft being disconnectable in the direct gear in order to avoid drag losses. |
75 |
Combination torque conversion and transfer system and method thereof |
US11637579 |
2006-12-12 |
US20070149344A1 |
2007-06-28 |
Marc McGrath; Jeffrey Hemphill |
The present invention broadly comprises a combination torque transmission system for a vehicle including a planetary gear set in a rotating housing and a gear set device in a stationary housing. The gear set has an input arranged for connection to a torsional output for an engine. The gear set device has an input connected to an output of the planetary gear set. In some aspects, the at least one gear set device is a planetary transmission such as a Ravigneaux gearset, a Simpson gearset, a plurality of simple gearsets, or a Lepelletier six speed arrangement. The gear set device includes a plurality of gear ratios and the planetary gear set is configured to augment the plurality of gear ratios by adding at least one first gear ratio to the plurality of gear ratios. In some aspects, the planetary gear set is configured to double the number of gear ratios. |
76 |
Drive train for series/parallel hybrid vehicle |
US10823292 |
2004-04-12 |
US07222686B2 |
2007-05-29 |
Didier Perrin |
A drive train for a hybrid vehicle is described herein. The drive train includes an electric motor having a rotor linked to a ground contacting wheel of the vehicle, a combustion engine that may be selectively connected to the ground contacting wheel and an electric generator that may be directly or indirectly connected to the combustion engine. The drive train may be used in a series mode while the generator is operated at a nominal rotation speed via a speed increasing gear mechanism while the internal combustion engine operates at low speed and in a parallel mode while the generator is operated at a rotation speed of the combustion engine. |
77 |
Planetary transmissions having a stationary fixed interconnection and providing at least eight speed ratios |
US10948559 |
2004-09-23 |
US07104916B2 |
2006-09-12 |
Patrick B. Usoro; Madhusudan Raghavan; Norman K. Bucknor |
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 two interconnecting members, one of which is grounded. 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 three to establish at least eight forward speed ratios and at least one reverse speed ratio. |
78 |
Wide ratio transmissions with a fixed interconnecting member and at least six clutches |
US10838084 |
2004-05-03 |
US07041027B2 |
2006-05-09 |
Norman K. Bucknor; Patrick B. Usoro; Madhusudan Raghavan |
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 a fixed interconnecting member. 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 the transmission housing, and are operated in combinations of three to establish at least eight forward speed ratios and at least one reverse speed ratio. |
79 |
Planetary transmissions having a stationary fixed interconnection and providing at least eight speed ratios |
US10948559 |
2004-09-23 |
US20060063636A1 |
2006-03-23 |
Patrick Usoro; Madhusudan Raghavan; Norman Bucknor |
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 two interconnecting members, one of which is grounded. 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 three to establish at least eight forward speed ratios and at least one reverse speed ratio. |
80 |
Wide ratio transmissions with three interconnected planetary gear sets and at least one brake |
US10807886 |
2004-03-24 |
US07004880B2 |
2006-02-28 |
Norman K. Bucknor; Patrick B. Usoro; Madhusudan Raghavan |
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 a fixed interconnection. 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 three to establish at least eight forward speed ratios and at least one reverse speed ratio. |