Plural Planetary Units Patents (Class 475/219)
  • Patent number: 11187277
    Abstract: A transmission apparatus and associated methods for a transportation system. The transmission apparatus includes a clutch assembly and a planetary gear assembly. The clutch assembly includes a clutch hub, a first clutch sleeve, and a second clutch sleeve. The first clutch sleeve is axially movable relative to the clutch hub to selectively engage a first component of a planetary gear assembly. The second clutch sleeve is axially movable relative to the clutch hub to selectively engage a second component of the planetary gear assembly. The planetary gear assembly includes a plurality of planet gears and a planet carrier. Each of the plurality of planet gears is supported in a rotatable manner by the planet carrier. In some embodiments, the first component of the planetary gear assembly is a first sun gear that engages each of the plurality of planet gears.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: November 30, 2021
    Assignee: TOYOTA MOTOR NORTH AMERICA, INC.
    Inventor: Luke A. Rippelmeyer
  • Patent number: 10655707
    Abstract: A gearbox (1) for agricultural and industrial motor vehicles comprises an input shaft (2) and an output shaft (3), a first clutch (12) and a second clutch (13) arranged in a position between the first and second transmission shafts (16, 17), the first and second transmission shafts both being hollow. The gearbox further comprises a first intermediate shaft (20) and a second intermediate shaft (21), the first intermediate shaft extending coaxially inside the second intermediate shaft. A first engaging device (22) is capable of selectively connecting the first intermediate shaft to the output shaft, a second engaging device (23) is capable of selectively connecting the second intermediate shaft to the output shaft and a third engaging device (24) alternately connects the second intermediate shaft to the first intermediate shaft or to the output shaft. The first engaging device and second engaging device are coaxial with the output shaft.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: May 19, 2020
    Assignee: CARRARO S.P.A.
    Inventor: Enrico Mangiaracina
  • Patent number: 10619710
    Abstract: A multi-speed transmission including a plurality of planetary gearsets and a plurality of selective couplers to achieve a plurality of different speed ratios is disclosed. The plurality of planetary gearsets may include a first planetary gearset, a second planetary gearset, a third planetary gearset, and a fourth planetary gearset received within a housing. The plurality of selective couplers may include a number of clutches and a number of brakes. A thrust load containment circuit is operably coupled to the plurality of planetary gearsets. The thrust load containment circuit includes a plurality of components arranged to resolve axial thrust loads from the plurality of planetary gearsets independent of the housing.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: April 14, 2020
    Assignee: Allison Transmission, Inc.
    Inventor: James Raszkowski
  • Patent number: 10427670
    Abstract: A continuously variable transmission includes two planetary gear sets having two planetary outputs and a planetary output shaft with a first drive gear. A variator drives a ring gear of the second planetary gear set, and a transmission input shaft is driven by the engine, which also drives the variator and the planetary input. Forward and reverse output systems are connected to the planetary output shaft and a transmission output shaft. A first clutch connects the first planetary output to the first drive gear, and a second clutch connects the second planetary output to the first drive gear. A third clutch connects the second planetary output to a second drive gear of the planetary output shaft, with the second drive gear being connected to the forward output system.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: October 1, 2019
    Assignee: Caterpillar Inc.
    Inventors: Gaurav Vasudeva, Konrad Garrett, Justin R. Bailey
  • Patent number: 9874275
    Abstract: A two-speed automatic planetary transmission, including a sun gear, dual planet gears, a planet carrier, a ring gear, a band-type brake ring, and a locking ring. The locking ring is disposed between the outer surface of the ring gear and the inner surface of the annular lug boss, and the inner surface of the locking ring is fixedly connected to the outer surface of the ring gear. Part of the outer surface of the locking ring contacts with the inner surface of the annular lug boss, and another part thereof is sheathed with the band-type brake ring. One end of the band-type brake ring is a fixed end, and is fixedly connected to a transmission shell; and another one is an unfixed end which is connected to a gear shifting actuator.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: January 23, 2018
    Assignee: CHANGFENG GROUP CO., LTD.
    Inventors: Huaping Zhang, Xiaolan Hu, Wei Huang, Zhibin Rong
  • Patent number: 9347526
    Abstract: A multistage transmission with eight forward and one reverse gear, including input and output shafts, planetary gearsets, gear stages, shift elements and shafts. Input shaft couples the carrier of gearset (P1) and, via clutch (15), can couple shaft (5) that couples the sun gear of gearset (P3) and, via clutch (58), can couple shaft (8) connected to the ring gear of gearset (P2). The ring gear of gearset (P1) couples shaft (6) connected to the sun gear of gearset (P2). Shaft (3) couples the sun and ring gears of respective gearsets (P1, P3) and can couple, via brake (03), housing (G). The carrier of gearset (P2) couples shaft (4) which couples gear stage (S1) and can couple the output shaft. The carrier of gearset (P3) couples shaft (7) which can couple, via gear stage (S2) and clutch (27), the output shaft. Clutch (56) can couple shafts (5 and 6).
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: May 24, 2016
    Assignee: ZF Friedrichshafen AG
    Inventors: Stefan Beck, Timo Wehlen
  • Patent number: 9168918
    Abstract: A power transmitting apparatus may include: an electric supplementary drive unit; a torque converting device having first, second, and third rotation elements, wherein the first rotation element is connected to the electric supplementary drive unit, the second rotation element is connected to an engine, and the third rotation element is operated as an output element; a first input shaft directly connected to the second rotation element, and a second input shaft directly connected to the third rotation element; a direct coupling device selectively connecting two rotation elements among the first, second, and third rotation elements, a first speed output unit having first and second synchronizer modules, and a second speed output unit having third and fourth synchronizer modules; and a reverse speed device having an idle gear and engaging to any one input gear on the first and second input shafts.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: October 27, 2015
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Sueng Ho Lee, Jongsool Park, Hyung Wook Cho
  • Publication number: 20150080164
    Abstract: A power-shiftable multi-stage transmission in planetary design, between a drive shaft and an output shaft, in particular an automatic transmission for a vehicle. The multi-stage transmission has two parallel shaft sections, six shift elements, at least two spur-gear stages and three planetary gear sets, each of which has one sun gear, one ring gear, and one planet carrier having a plurality of planetary gears. The planet carrier is united in a carrier, and the two shaft sections can be connected to one another via the at least two spur-gear stages. Different transmission ratios between the drive shaft and the output shaft can be implemented by selective engagement of the six shift elements such that a plurality of forward gears, in particular nine forward gears, and at least one reverse gear, can be implemented.
    Type: Application
    Filed: March 13, 2013
    Publication date: March 19, 2015
    Inventor: Stefan Beck
  • Patent number: 8974343
    Abstract: An automatic transmission planetary gear train for a vehicle may include a first shaft receiving a torque of an engine, a second shaft disposed substantially in parallel with the first shaft, a first planetary gear set disposed on the first shaft and including a first sun gear, a first planet carrier, and a first ring gear as rotation elements, a second planetary gear set disposed on the second shaft and including a second sun gear, a second planet carrier, and a second ring gear as rotation elements, a third planetary gear set disposed on the second shaft and including a third sun gear, a third planet carrier, and a third ring gear as rotation elements, three transfer gears forming the externally-meshed gears, and frictional elements selectively interconnecting the rotation elements of the first, second, and third planetary gear sets or selectively connecting a rotation element to a transmission housing.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: March 10, 2015
    Assignee: Hyundai Motor Company
    Inventors: Myonghoon Noh, Hyu Tae Shim, Kangsoo Seo, Jae Chang Kook, Chang Wook Lee, Jongsool Park
  • Patent number: 8911323
    Abstract: A multi-ratio transmission system is provided, including multiple planet gear sub-systems, at least two coupling assemblies, a setting element, a setting element controller, an annular gear, a cylindrical casing, a sprocket, and a central axle. The planet gear sub-systems are disposed coaxially in series along a first axis. Each of the planet gear sub-system includes a sun gear and at least one planet gear. Each coupling assembly transmits the rotation between every two adjacent planet gear sub-systems. The setting element optionally engages with the sun gear. The annular gear is installed onto a one-way clutch. The cylindrical casing encloses the planet gear sub-systems. The sprocket is installed onto the planet gear sub-systems through the one-way clutch. The central axle enables the hollowed tube of the setting element controller to rotate around the central axle.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: December 16, 2014
    Assignee: Cheng Ho Chen
    Inventor: Cheng Ho Chen
  • Patent number: 8894531
    Abstract: A planetary gear train including: a first planetary gear set on a first shaft including a first sun gear operated as an output or fixed element, a first planet carrier operable as an output element, and a first ring gear operated as an input element; a second planetary gear set on a second shaft including a second sun gear connected to the first planet carrier, a second planet carrier, and a second ring gear engaging the first planet carrier and the first ring gear; a third planetary gear set on the second shaft including a third sun gear connected to the second ring gear, a third planet carrier engaging the second planet carrier and connected to an output gear, and a third ring gear engaging the first sun gear; three transfer gears; and frictional elements interconnecting the first, second, and third planetary gear sets and/or connecting a transmission housing.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: November 25, 2014
    Assignee: Hyundai Motor Company
    Inventors: Myonghoon Noh, Hyu Tae Shim, Kangsoo Seo, Jae Chang Kook, Chang Wook Lee, Jongsool Park
  • Patent number: 8870700
    Abstract: Automatic transmission comprising: planetary gears arranged coaxially in a row, each planetary gear comprising a sun wheel, a planetary carrier carrying pivoted planetary wheels and an annulus gear, an input column connected to a sun wheel of a first planetary gear, a general gear positioned adjacent to the row of planetary gears next to a last planetary gear, n mediator gears mounted on an output column and connected to the output column via a freewheel assembly so the mediator gears are freely rotatable in one direction relative to the output column, each mediator gear in engagement with one of the planetary wheels, wherein a planetary carrier of the last planetary gear is fixed to the general gear, and a planetary carrier of each but the last planetary gear connected to a sun wheel of a following planetary gear, wherein rotation of any of the mediator gears can be stopped selectively.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: October 28, 2014
    Assignee: King Saud University
    Inventor: Hmood Mutliq Faheed Alshamri
  • Publication number: 20140274540
    Abstract: A transmission includes an input shaft, an output shaft, a variator, a plurality of clutches including a first clutch, a second clutch, a third clutch, a fourth clutch, and a variator bypass clutch, and a plurality of gearsets including a first gearset, a second gearset, a third gearset, and a fourth gearset. The transmission is operable in a plurality of operating modes, including at least mode in which the variator is utilized to provide a transmission ratio varying within a defined range and at least one mode in which the variator is bypassed to provide a fixed transmission ratio.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Inventor: Brian Schoolcraft
  • Patent number: 8838306
    Abstract: In a method and a device for operating a drive unit, a first output variable of the drive unit is restricted; a setpoint value of a second output variable of the drive unit is specified; and an actual value of the second output variable of the drive unit is determined. The setpoint value is compared with the actual value, and if it is determined that the actual value does not exceed the setpoint value, then the first output variable is restricted to a first value. If it is determined that the actual value exceeds the setpoint value, then the first output variable is restricted to a second value smaller than the first value.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: September 16, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Guenter Kettenacker, Christian Ruland, Klaus Schwarze
  • Patent number: 8808131
    Abstract: A continuously variable transmission includes two planetary gear sets having two outputs. A variator drives a ring gear of the second planetary gear set, and a transmission input shaft is driven by the engine, which also drives the variator and the planetary input. Second and third output shafts are connected to a transmission output shaft. A first clutch is connected to the first output shaft, a second clutch is connected to the second planetary output and engages a first drive gear. A third clutch is connected to the first output shaft and releasably engages the first drive gear, a fourth clutch is connected to the first drive gear and releasably engages the second output shaft, and a fifth clutch is connected to the first drive gear and releasably engages the third output shaft.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: August 19, 2014
    Assignee: Caterpillar Inc.
    Inventors: John M. Seipold, Glen P. Calvert, Robert E. Black, Michael G. Cronin
  • Patent number: 8795114
    Abstract: A transmission includes a first motor/generator having a first rotor that is selectively rotatable about a first axis and a second motor/generator having a second rotor that is selectively rotatable about a second axis. A first planetary gearset and a second planetary gearset each has a respective first planetary member, a respective second planetary member, and a respective third planetary member. One of the members of the first planetary gearset is operatively connected to the first rotor to receive torque therefrom. One of the members of the second planetary gearset is operatively connected to the second rotor to receive torque therefrom.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: August 5, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Norman Schoenek, Elizabeth I. Wooden, Min-Joong Kim, Shawn H. Swales, Xiaohui Du, Leonid Basin, John Czubay
  • Patent number: 8764602
    Abstract: A planetary gear train of an automatic transmission may include a first planetary gear set including a first ring gear directly connected to a first shaft, a first planet carrier, and a first sun gear, a second planetary gear set disposed on a second shaft and including a second sun gear receiving an inverse rotation speed from the first planet carrier, a second ring gear selectively connected to the second shaft, and a second planet carrier, a third planetary gear set including a third sun gear directly connected to the second shaft, a third ring gear selectively connected to the first sun gear, and a third planet carrier directly connected to the second planet carrier and directly connected to an output gear, three transfer gears interposed between rotation elements, and five frictional elements selectively interconnecting the rotation elements or selectively connecting the rotation elements to a transmission housing.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: July 1, 2014
    Assignee: Hyundai Motor Company
    Inventors: Myonghoon Noh, Hyu Tae Shim, Kangsoo Seo, Jae Chang Kook, Chang Wook Lee, Jongsool Park
  • Patent number: 8696507
    Abstract: A transmission comprises an input shaft and an output shaft and two power paths between the input shaft and a main gear set. The transmission also comprises a first, second, third and fourth shafts, wherein at least one electric machine can be connected to one of the shafts of the main gear set, the first shaft can be connected via a first shifting element to a first power path and via a second shifting element to a second power path, the second shaft can be connected via a third shifting element to the first power path and via a fourth shifting element to the second power path, the third shaft is continuously connected to the output shaft, the fourth shaft can be fixed via a sixth shifting element and can be connected via a fifth shifting element to the first power path.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: April 15, 2014
    Assignee: ZF Friedrichshafen AG
    Inventor: Peter Ziemer
  • Patent number: 8663057
    Abstract: An automated manual transmission which improves merchantability of a vehicle by preventing a shift feeling deterioration phenomenon and forming a smooth and stable shift feeling by removing a torque decrease phenomenon caused during a shift by dualizing a transmission path of power supplied to drive the vehicle during the shift through a relatively simple and compact configuration while using a synchro-mesh type shift mechanism.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: March 4, 2014
    Assignee: Hyundai Motor Company
    Inventors: Soon Ki Eo, Il Soo Kim
  • Patent number: 8651993
    Abstract: A bicycle drive unit is provided that includes a motor, a crank axle, a power transmission axle and an output part. The motor includes a crank axle receiving hole. The crank axle is rotatably disposed in the crank axle receiving hole of the motor. The power transmission axle is separate from the crank axle and arranged to transmit rotation of the crank axle. The output part is operatively coupled to the motor and the power transmission axle to combine a rotational output of the motor and a rotational output of the transmission mechanism together.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: February 18, 2014
    Assignee: Shimano Inc.
    Inventor: Etsuyoshi Watarai
  • Publication number: 20140045637
    Abstract: A compact drivetrain provided with a CVT that can be used in CVT low and high configurations and in a reverse configuration is described herein. In addition to the CVT, the drivetrain includes first and second planetary gear trains compactly mounted in series so as to selectively cooperate with the CVT and a configuration selection system coupled to both first and second planetary gear trains and to the output disk of the CVT for selectively associating the output shaft of the drivetrain to the outputs of the first and second planetary gear trains or to the output disk of the CVT for allowing the three modes of operation.
    Type: Application
    Filed: April 26, 2012
    Publication date: February 13, 2014
    Applicant: TRANSMISSION CVTCORP INC.
    Inventors: Jean-Francois Dionne, Jean-Robert Desmeules, Francois Messier
  • Patent number: 8617023
    Abstract: A planetary gear train of an automatic transmission may include a first planetary gear set including a first sun gear, a first planet carrier, and a first ring gear, a second planetary gear set including a second sun gear receiving an inverse rotation speed from the first ring gear, a second planet carrier, and a second ring gear selectively connected to the first planet carrier or the first ring gear, a third planetary gear set including a third sun gear selectively connected to the first planet carrier, the first ring gear, or the second ring gear, a third planet carrier, a third ring gear selectively connected to the first sun gear, three transfer gears engaging three rotation elements of the first planetary gear set with selected rotation elements, and five frictional elements selectively interconnecting the rotation elements or selectively connecting the rotation elements to a transmission housing.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: December 31, 2013
    Assignee: Hyundai Motor Company
    Inventors: Myonghoon Noh, Hyu Tae Shim, Kangsoo Seo, Jae Chang Kook, Chang Wook Lee, Jongsool Park
  • Patent number: 8597149
    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.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: December 3, 2013
    Assignee: ZF Friedrichshafen AG
    Inventor: James Potter
  • Patent number: 8585532
    Abstract: An independently controllable transmission mechanism includes a first planetary gear train, a second planetary gear train, a first transmission-connecting set and a second transmission-connecting set. The first planetary gear train and the second planetary gear train are serially connected to form a series type. The independently controllable transmission mechanism has a first power output end, a transmission control end, a first power input end and a free-transmission end. The first power output end is provided on the first planetary gear train and the transmission control end is provided on the second planetary gear train. The first power input end is provided on the first transmission-connecting set and the free-transmission end is provided on the second transmission-connecting set. The transmission control end controls the free-transmission end to be functioned as a second power input end or a second power output end.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: November 19, 2013
    Assignee: National Sun Yat-Sen University of Kaohsiung
    Inventors: Guan-Shyong Hwang, Der-Min Tsay, Jao-Hwa Kuang, Tzuen-Lih Chern
  • Patent number: 8585530
    Abstract: An independently controllable transmission mechanism includes a first planetary gear set, a second planetary gear set, a first transmission-connecting set and a second transmission-connecting set. The first planetary gear set includes a first power output end, the second planetary gear set includes a transmission control end, the first transmission-connecting set includes a first power input end and the second transmission-connecting set includes a free transmission end. The transmission control end controls the free transmission end to function as a second power input end or a second power output end.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: November 19, 2013
    Assignee: National Sun Yat-Sen University of Kaohsiung
    Inventors: Guan-Shyong Hwang, Der-Min Tsay
  • Patent number: 8585533
    Abstract: An independently controllable transmission mechanism includes a first planetary gear train and a second planetary gear train. The first planetary gear train and the second planetary gear train are mechanically connected in parallel to form a parallel type. The controllable transmission mechanism has a first power output end, a transmission control end, a first power input end and a free-transmission end. The first power output end is provided on the first planetary gear train and the transmission control end is provided on the second planetary gear train. When the first power input end is provided on the first planetary gear train or the second planetary gear train, the free-transmission end is provided on the second planetary gear train or the first planetary gear train. The transmission control end controls the free-transmission end to be functioned as a second power input end or a second power output end.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: November 19, 2013
    Assignee: National Sun Yat-Sen University of Kaohsiung
    Inventors: Guan-Shyong Hwang, Der-Min Tsay, Jao-Hwa Kuang, Tzuen-Lih Chern
  • Patent number: 8585531
    Abstract: An independently controllable transmission mechanism with an identity-ratio series type includes a first planetary gear train and a second planetary gear train mechanically connected therewith. The transmission mechanism has a power output end, a transmission control end, a power input end and a free transmission end. The power output end and the transmission control end are provided on the first planetary gear train and the second planetary gear train, respectively. The power input end is provided on the first planetary gear train or the second planetary gear train while the free transmission end is provided on the second planetary gear train or the first planetary gear train. The transmission control end is operated to freely shift the free transmission end as a power input end or a power output end.
    Type: Grant
    Filed: January 15, 2011
    Date of Patent: November 19, 2013
    Assignee: National Sun Yat-Sen University
    Inventors: Guan-Shyong Hwang, Der-Min Tsay, Chung-Chi Lin, Jao-Hwa Kuang, Tzuen-Lih Chern
  • Patent number: 8556770
    Abstract: A planetary gear train may include a first shaft, a second shaft, a first planetary gear set disposed on the first shaft and including a first planet carrier directly connected to the first shaft, a first ring gear, and a first sun gear, a second planetary gear set disposed on the second shaft and including a second sun gear, a second ring gear, and a second planet carrier, a third planetary gear set disposed on the second shaft and including a third sun gear directly connected to the second shaft, a third ring gear selectively connected to the first sun gear and to the second planet carrier, and a third planet carrier directly connected to the second ring gear and an output gear, three transfer gears interposed between the rotation elements, and five frictional elements selectively interconnecting the rotation elements or selectively connecting the rotation elements to a transmission housing.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: October 15, 2013
    Assignee: Hyundai Motor Company
    Inventors: Myonghoon Noh, Hyu Tae Shim, Kangsoo Seo, Jae Chang Kook, Chang Wook Lee, Jongsool Park
  • Patent number: 8556758
    Abstract: A transmission includes a first planetary gearset and a second planetary gearset, each having a respective first planetary member, a respective second planetary member, and a respective third planetary member. The planetary members of the first planetary gearset are coaxially disposed on, and selectively rotatable about, a first axis. The planetary members of the second planetary gearset are coaxially disposed on, and selectively rotatable about, a second axis. An axis transfer mechanism including meshing gears transmits torque between the first and second planetary gearsets.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: October 15, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Norman Schoenek, Elizabeth I. Wooden, Shawn H Swales
  • Patent number: 8517882
    Abstract: A transmission to transfer power from an electric motor to first and second axles of a vehicle includes an input shaft adapted to be driven by the electric motor and a first planetary gear set. A second planetary gear set has a first member driven by the first planetary gear set, a second member restricted from rotation and a third member. A differential assembly has a first side gear adapted to drive the first axle, a second side gear adapted to drive the second axle and a pair of pinion gears meshed with the first and second side gears. A first clutch is operable to drivingly interconnect the first member and the differential assembly. A second clutch is operable to drivingly interconnect the third member and the differential assembly.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: August 27, 2013
    Assignee: Magna Powertrain USA, Inc.
    Inventor: David W. Wenthen
  • Patent number: 8480530
    Abstract: An automatic transmission includes four planetary gear sets, a plurality of friction and synchronizing clutches and two chain drive assemblies. Input torque is provided to four clutches which selectively provide torque to one element of a compound assembly comprising first and second planetary assemblies. The second planetary assembly includes only a sun gear and a planet carrier including elongate, stepped pinion gears which extend into the planet carrier of the adjacent first planetary assembly. The sun and ring gears of the first planetary assembly drive respective chain drive sprockets. A pair of chains transfer torque to respective driven chain sprockets. The chain driven by the first planetary assembly sun gear drives a third planetary assembly sun gear. The chain driven by the first planetary assembly ring gear drives a fourth planetary assembly sun gear. The transmission output is connected to the planet carriers of the third and fourth planetary assemblies.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: July 9, 2013
    Assignee: GM Global Technology Operations LLC
    Inventor: Andrew W. Phillips
  • Patent number: 8414442
    Abstract: Disclosed herein is a gear train of a multi-step transmission for a vehicle, which can shift gears among nine forward speeds and one reverse speed. The gear train realizes a desired level of multi-step change gear ratios and has a reduced number of sets of planetary gears to reduce the volume and length of the transmission, thus realizing a compact structure, thereby facilitating the installation of the transmission in the vehicle.
    Type: Grant
    Filed: December 11, 2011
    Date of Patent: April 9, 2013
    Assignee: Hyundai Motor Company
    Inventors: Tae Seok Seo, Jong Sool Park, Hyuk Jun Lee
  • Patent number: 8388488
    Abstract: An automatic transmission includes four planetary gear sets, a plurality of friction and synchronizing clutches and two drive assemblies. Input torque is provided to four clutches which selectively provide torque to various elements of the first and second planetary gear assemblies. Similarly, various elements of the first and second planetary gear assemblies provide power to the two drive assemblies which may either be chain drive or gear assemblies. The outputs of the drive assemblies drive sun gears of the third and fourth planetary gear assemblies. The transmission output is connected to and driven by the planet carriers of the third and fourth planetary assemblies. Sequenced operation of the friction and synchronizing clutches provides eight, nine or ten forward speeds or gear ratios.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: March 5, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Andrew W. Phillips, Clinton E. Carey
  • Patent number: 8388485
    Abstract: A multispeed automatic transmission is provided having four planetary gear sets, a plurality of friction and synchronizer clutches and two chain drive assemblies. The transmission is arranged along two parallel axes of rotation: a first axis defined by the input shaft and a second axis defined by the output shaft. The chain drive assemblies transfer power between sprockets disposed on the two axes. Various combinations of clutches may be engaged to provide nine forward speed ratios and five reverse speed ratios.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: March 5, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Andrew W. Phillips, James B. Borgerson
  • Patent number: 8376890
    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.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: February 19, 2013
    Assignee: Hyundai Motor Company
    Inventor: Seong Wook Hwang
  • Patent number: 8371979
    Abstract: The invention relates to a transmission unit having a continuously variable transmission part (3) and a mechanical transmission part (4) comprising a four-shaft planetary gear (5), the part comprising a first planetary gear set (8) and a second planetary gear set (1) and being connected selectively to the output (A) via a first clutch device (K1) or a second shiftable clutch device (K2). The invention is characterized in that the first planetary gear set (8) and the second planetary gear set (10) of the planetary gear (5) each comprise a first shaft (11, 12) and a second shaft (13, 15), wherein the first shafts (11, 12) are rotationally fixed to each other and connected at least indirectly to the transmission input (E), and the second shaft of the first planetary gear set (8) is connected to the continuously variable transmission part (3) and the second shaft (15) of the second planetary gear set (9) is connected to an input part (16) of the first clutch device (K1).
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: February 12, 2013
    Inventor: Dieter Glöckler
  • Patent number: 8353803
    Abstract: An automatic transmission excelling in transmission efficiency than the prior art is provided. The automatic transmission is equipped with an input shaft 2 and an output shaft 3 and a plurality of planetary gear mechanisms 5, 6. Any one element Sa of a plurality of the planetary gear mechanisms 5, 6 is coupled to the input shaft 2. One element Ca is coupled to the output shaft 3 via the first gear row G1. One element Rb is connected to the output shaft 3 via a second gear row G2 having a gear ratio different from that of the first gear row G1. Five or more engagement mechanisms C1 through C3, B1, B2 for coupling each element Ra and Cb, each element Sb, Cb with the input shaft 2, and each element Sb, Cb with the transmission case 1 releasably.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: January 15, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventor: Noriaki Saitoh
  • Patent number: 8308597
    Abstract: In order to provide a speed change transmission system which can be obtained compactly, while obtaining output at steplessly varied speeds over a large speed change range only by carrying out a simple shifting operation, the speed change transmission system has a hydrostatic stepless transmission to which engine drive is inputted. A planetary transmission device (P) has a plurality of planetary transmission mechanisms, for combining output of the stepless transmission and engine drive not undergoing speed change action by the hydrostatic stepless transmission. A plurality of transmission shafts are provided with a plurality of speed range setting clutches switchable for converting the combined driving force from the planetary transmission device (P) to a driving force in a plurality speed ranges, and transmitting it to an output rotary member. The plurality of transmission shafts are juxtaposed and arranged in parallel.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: November 13, 2012
    Assignee: Kubota Corporation
    Inventors: Minoru Hiraoka, Satoshi Machida, Yoshiyuki Katayama
  • Patent number: 8287415
    Abstract: The invention relates to a transmission unit (1), particularly multi-range transmission (2), comprising an input (E) and an output (A) and arranged between them a continuously variable transmission part (3) and a mechanical transmission part (4), comprising two three-shaft planetary gear sets (5, 6), each having a first (5.1, 6.1), second (5.2, 6.2) and third shaft (5.3, 6.3), wherein the first shafts of both planetary gear sets can be connected to the input and at least one second or third shaft of the respective planetary gear set can be non-rotatable connected to the output (A). The invention is characterized in that the planetary gear sets can be connected via two shiftable coupling units (K1, K2), which can be selectively and alternately actuated, to form a four-shaft planetary gear set and that the first coupling unit (K1) is arranged between the first shaft (6.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: October 16, 2012
    Inventor: Dieter Glockler
  • Patent number: 8226518
    Abstract: Continuously variable transmission is discloses as comprising a continuously variable speed device such that the speed of the final outlet shaft (8) may be varied in any rotation direction and to zero using a combination of different diameters of a first pulley.
    Type: Grant
    Filed: June 6, 2005
    Date of Patent: July 24, 2012
    Assignee: Power Gear S.L.
    Inventor: Javier Parraga Gimeno
  • Publication number: 20120122624
    Abstract: The present invention provides an infinitely variable transmission for a powered vehicle which includes a power source. The transmission includes an input shaft and an output shaft, the output shaft being spaced from the input shaft. The transmission further includes a variator coupled between the input shaft and output shaft. In addition, at least two planetary gearsets are disposed adjacent to the variator and an input coupler is configured to selectively couple the variator to the power source.
    Type: Application
    Filed: September 9, 2011
    Publication date: May 17, 2012
    Inventors: Glen S. Hawkins, JR., Brian Schoolcraft, James A. Raszkowski, David E. Earhart, Gary Reichanadter
  • Publication number: 20120115668
    Abstract: A drive arrangement is provided for at least one auxiliary equipment of a vehicle, wherein the vehicle includes a driveline including a gearbox. The drive arrangement includes a power split device having at least three input/output couplings, the speed of all of the at least three separate couplings being interdependent but not being with a fixed ratio one to the other. A first coupling is connected to the driveline, a second coupling is connected to an electric machine, and a third coupling is connected to the at least one auxiliary equipment. The first coupling is connected to the input shaft of the gearbox.
    Type: Application
    Filed: July 22, 2009
    Publication date: May 10, 2012
    Applicant: RENAULT TRUCKS
    Inventor: Thomas Justin
  • Publication number: 20120100952
    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.
    Type: Application
    Filed: October 20, 2010
    Publication date: April 26, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Scott H. Wittkopp, James M. Hart, Andrew W. Phillips
  • Patent number: 8157688
    Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, four external 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. Each of the external gear sets includes first and second gears. The torque transmitting devices may include clutches and brakes.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: April 17, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Scott H. Wittkopp, Andrew W. Phillips, Clinton E. Carey, James M. Hart
  • Patent number: 8142323
    Abstract: In a continuously variable transmission (“CVT”) using a toroidal-race continuously variable ratio device and a planetary gear mechanism, the rotation of the input shaft (12) is directly transmitted to the carrier C of the planetary gear mechanism (61), and rotation resulting from gearing and reversal by the variator (5) is transmitted to the sun gear (S1). When the low clutch L is engaged, the rotation of the ring gear (R3) is transmitted via the reversing gear mechanism (71) to the output shaft (13), and when the high clutch H is engaged, the rotation of the sun gear (S2) is transmitted to the output shaft (13).
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: March 27, 2012
    Assignees: Torotrak (Development) Limited, KK Equos Research
    Inventors: Saoto Tsuchiya, Masahiro Hasebe, Norihiro Kai, Alan Fielding
  • Patent number: 8113977
    Abstract: An automatic transmission includes four planetary gear sets, a plurality of friction and synchronizing clutches and two chain drive assemblies. Input torque is provided to four clutches which selectively provide torque to one element of a compound assembly comprising first and second planetary assemblies. The second planetary assembly includes only a sun gear and a planet carrier including elongate, stepped pinion gears which extend into the planet carrier of the adjacent first planetary assembly. The sun and ring gears of the first planetary assembly drive respective chain drive sprockets. A pair of chains transfer torque to respective driven chain sprockets. The chain driven by the first planetary assembly sun gear drives a third planetary assembly sun gear. The chain driven by the first planetary assembly ring gear drives a fourth planetary assembly sun gear. The transmission output is connected to the planet carriers of the third and fourth planetary assemblies.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: February 14, 2012
    Assignee: GM Global Technology Operations LLC
    Inventor: Andrew W. Phillips
  • Patent number: 8113978
    Abstract: The present invention provides a nine forward speed automatic transmission for a motor vehicle which includes four planetary gear sets, a plurality of friction and synchronizer clutches and two chain drive assemblies. The transmission is arranged along two parallel axes of rotation: a first axis defined by the input shaft and a second axis defined by the output shaft. The chain drive assemblies transfer power between sprockets disposed on the two axes. Various combinations of clutches may be engaged to provide nine forward speed ratios and five reverse speed ratios.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: February 14, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Andrew W. Phillips, James B. Borgerson
  • Patent number: 8047945
    Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, four external 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. Each of the external gear sets includes first and second gears. The torque transmitting devices may include clutches and brakes.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: November 1, 2011
    Assignee: GM Global Technology Operations LLC
    Inventors: Scott H. Wittkopp, Andrew W. Phillips, Clinton E. Carey, James M. Hart
  • Patent number: 8047944
    Abstract: A transmission unit, especially a multirange transmission, includes two superposition gears that are embodied as triple-shaft planetary gears, a continuously variable transmission in the form of a traction gear, and a way for controlling the transmission ratio on the traction gear. The individual superposition gears and the continuously variable transmission are coupled to each other via one respective connecting gear. The second shaft of the first superposition gear and a shaft of the second superposition gear can be alternatively joined to the gear output via a shiftable clutch. The second shaft of the first superposition gear can be connected in a torsion-proof manner to the third shaft of the second superposition gear. The first shaft of the second superposition gear is joined to a shaft of the first superposition gear via another shifting clutch.
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: November 1, 2011
    Inventor: Dieter Glöckler
  • Patent number: 8038568
    Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, four external co-planar 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. Each of the external gear sets includes first and second gears. The torque transmitting devices may include clutches and brakes.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: October 18, 2011
    Assignee: GM Global Technology Operations LLC
    Inventors: Scott H. Wittkopp, Andrew W. Phillips, James M. Hart, Clinton E. Carey