Entries |
Document | Title | Date |
20080261745 | POWER TAKEOFF AND GEARBOX - A power takeoff and gearbox is configured for use with an associated vehicle transmission to provide rotational power to an associated auxiliary component. The power takeoff and gearbox includes a housing. An input gear set includes an input gear and a transfer gear mounted for common rotation. The input gear is driven by the associated vehicle transmission. A primary drive gear is disposed on a drive shaft. The primary drive gear is meshed with the transfer gear for rotation with the transfer gear. A planetary gear system includes a carrier, a plurality of planet gears mounted for rotation within the carrier and a sun gear disposed central to the planet gears. The carrier is connected to the primary drive shaft for rotation with the shaft and for rotation of the planet gears relative to the carrier. An output is mounted to the sun gear for providing rotational power to the associated auxiliary component. The input gear set and the output are disposed, at least in part, within the housing and the primary drive gear and the planetary gear system are disposed within the housing. A clutch can also be included mounted within the housing. | 10-23-2008 |
20090017957 | Power-branched automatic vehicle transmission with a CVT-variable speed drive - Structures of automatic vehicle transmissions are described which have a planetary gear train connected to an input shaft. The planetary gear train is connected through a CVT variable speed drive that includes two variable speed drive shafts and through at least one gear pairing to an output shaft. Rotationally fixed connections corresponding to different gear ranges are producible between shafts of the transmission through gear pairings and or shaft connections provided with clutches. | 01-15-2009 |
20090118052 | Axle Driving Unit For A Lawn Tractor - An axle driving unit includes an axle, a hydraulic pump, a hydraulic motor having a motor shaft on which an output gear is provided to be drivingly connected to said axle, a center section having a pump mounting surface and a motor mounting surface onto which the hydraulic pump and the hydraulic motor are mounted respectively so as to be fluidly connected with each other through the center section, a housing constituted by a first housing part and a second housing part joined to each other at a joint surface, a projection integrally formed on the center section so as to be fitted to the housing, thereby fixing a position of the center section relative to the housing, and a fastener fastening the center section to the first housing part. The pump mounting surface and said motor mounting surface may be disposed perpendicular to each other. Said pump mounting surface and said motor mounting surface are disposed perpendicular to each other. The projection may be extended in parallel to the pump mounting surface and perpendicular to the motor mounting surface. | 05-07-2009 |
20090131213 | Sliding block type stepless autoshift speed changer - A sliding block type stepless autoshift speed changer includes a holder sleeve affixed to a main transmission shaft and holding two weights by means of two torsional members, an eccentric block radially movably coupled to the holder sleeve; a driving wheel supported on a ring round the eccentric block and having radial sliding grooves on two sides, two clutch wheels respectively fastened to a wheel hub and a secondary power output shaft, each clutch wheel having an annular sliding groove respectively facing the driving wheel, sliding blocks respectively sliding in the annular sliding grooves of the clutch wheels, each sliding block having a roller respectively coupled to and movable along the radial sliding grooves of the driving wheel, a plurality of beveled guide surface portions, and a plurality of rolling cylinders rotatably supported on and movable along the beveled guide surface portions. | 05-21-2009 |
20090203482 | MULTI-SPEED SPLIT DUAL CLUTCH TRANSMISSION - A transmission is provided having an input member, an output member, a split dual clutch assembly, two countershaft gearing arrangements, one planetary gear set, a plurality of interconnecting members, and a plurality of torque transmitting devices. Each of the countershaft gearing arrangements includes a plurality of co-planar gear sets. The torque transmitting devices include a combination of clutches, brakes, and synchronizers. | 08-13-2009 |
20090203483 | MULTI-SPEED SPLIT DUAL CLUTCH TRANSMISSION - A transmission is provided having an input member, an output member, a split dual clutch assembly, two countershaft gearing arrangements, one planetary gear set, a plurality of interconnecting members, and a plurality of torque transmitting devices. Each of the countershaft gearing arrangements includes a plurality of co-planar gear sets. The torque transmitting devices include a combination of clutches, brakes, and synchronizers. | 08-13-2009 |
20090203484 | MULTI-SPEED SPLIT DUAL CLUTCH TRANSMISSION - A transmission is provided having an input member, an output member, a clutch assembly, two countershaft gearing arrangements, one planetary gear set, a plurality of interconnecting members, and a plurality of torque transmitting devices. Each of the countershaft gearing arrangements includes a plurality of co-planar gear sets. The torque transmitting devices include a combination of clutches, brakes, and synchronizers. | 08-13-2009 |
20090203485 | Variable Speed Transmission - 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. | 08-13-2009 |
20090305833 | MULTI-GROUP TRANSMISSION OF A MOTOR VEHICLE - 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. | 12-10-2009 |
20100120572 | Device for switching between normal and reverse drive force - A device for switching between normal and reverse driving force is provided. This device can transmit the rotation of an input member in one direction to an output member to selectively rotate the output member in one or the opposite direction. This device includes an input gear | 05-13-2010 |
20100216587 | ARRANGEMENT FOR TRANSMITTING A TORQUE FROM A TRANSMISSION TO SIDESHAFT - An arrangement for transmitting a torque from a transmission of a motor vehicle to a sideshaft is disclosed. The arrangement comprises a transmission having a transmission housing and a sideshaft assembly. The sideshaft assembly has at least one differential with a differential housing, a hollow shaft, a first sideshaft and a second sideshaft. The sideshaft assembly extends through the transmission housing and the differential being arranged outside the transmission housing. | 08-26-2010 |
20100227726 | TRANSMISSION - In a transmission including a multiple planetary mechanism into which power from a driving source is inputted through an input shaft, clutches are provided respectively for three components among a plurality of components included in the multiple planetary mechanism and are respectively disposed and capable of switching between connection and disconnection of transmission of power between the input shaft and the three components. Brakes are respectively provided between a transmission case and components among the plurality of components. The brakes are configured to make the components stationary relative to the transmission case. Two transmission mechanisms different from each other in speed reduction ratio are provided between an output shaft, which is parallel with the input shaft, and two components among the plurality of components. The two transmission mechanisms are provided in such a manner as to be capable of selectively switching transmission of the power to the output shaft side. Accordingly, it is possible to provide a transmission whose controllability of transmission is enhanced, and whose efficiency is improved by reducing the friction. | 09-09-2010 |
20100279812 | PLANETARY GEAR SET AND POWER TRANSMITTING APPARATUS AND USE OF THE SAME - The present invention relates to a planetary gear set and a power transmitting apparatus. In the planetary gear set, a gear tooth is formed by extending one side of a planetary carrier. In the power transmitting apparatus, multi-stage transmission is enabled by reducing a rotational speed inputted from a power-driving source and then inputting the reduced rotational speed to one operational member of the planetary gear set as well as the rotational speed of a speed changing power source to another operational member of the planetary gear set. According to an embodiment of the present invention, the power transmitting apparatus comprises: an input shaft to which a driving gear is fixed and of which one end is constantly connected to the power driving source; a decelerating unit which is combined with the driving gear and decreases the rotational speed of the input shaft; a planetary gear set including a first operational member which receives the rotational speed from the input shaft by being connected to the decelerating unit, a second operational member which receives the power for speed changing, and a third operational member at which an output speed is generated; a speed changing unit which receives the power for speed changing by being constantly connected to the speed changing power source and that is also connected to the second operational member in order to transmit the power for speed changing to the second operational member; and an output shaft which is fixed to the third operational member of the planetary gear set to transmit the output speed, wherein the operational shaft of the second operational member may be perpendicular to the rotational shaft of the speed changing unit. | 11-04-2010 |
20100304915 | Cam-based infinitely variable transmission - A cam based infinitely variable transmission incorporation a ratcheting drive mechanism with one set of planetary gears and a cam with two followers mounted on a carrier with said gears and adapted to in infinitely variable in output but maintain a uniform output for a given uniform input. The followers are can be shifted in relation to the three dimensional cam by a shifter and clutches are used to handle the relative motion of the gears and follower shafts. | 12-02-2010 |
20100331133 | SUPERPOSITION-DRIVE FOR A STEERING SYSTEM - A superposition gear unit for a steering system of a motor vehicle. The gear unit comprising a drive input shaft ( | 12-30-2010 |
20110021302 | Power split transmission - A transmission has a directional mechanism, a planetary gear mechanism, a stepped transmission and a continuously variable ratio device. The directional mechanism has at least one direction clutch. The planetary gear mechanism is connected to the direction mechanism and has at first planetary gear set and a second planetary gear set. The stepped transmission is connected to the planetary gear mechanism and has at least one speed clutch. The planetary gear mechanism is connected to a hydrostatic motor of the continuously variable ratio device. The motor is connected to a variable displacement pump of the continuously variable ratio device. | 01-27-2011 |
20110053726 | Gear Reduction and Coupling Assembly - A gear reduction and coupling assembly, particularly for incorporation in a transverse drive arrangement for a skid steered vehicle, comprises a planetary gear mechanism having an input through the sun gear and an output through the planet carrier. A coupling member is coupled to the carrier through a crowned spline coupling and is coupled to a subsequent transmission member such as a shaft through a parallel splined coupling, the diameter of the crowned spline coupling being substantially greater than the diameter of the parallel splined coupling. In this way a degree of angular misalignment between the subsequent transmission member and the planet carrier can be accommodated while a similar torque transmitting capacity can be achieved for both of the couplings with the coupling member. | 03-03-2011 |
20110065545 | BEVEL GEAR TRANSMISSION - A conical gear drive comprising an input element that interacts with a truncated conical gear via which an output element can be driven. A number of different output elements or variably selectable output elements should be able to be connected to the truncated conical gear drive. | 03-17-2011 |
20110118073 | POWER SPLIT TRANSMISSION - The present invention relates to a power split transmission for a motor vehicle, having a mechanical and a hydrostatic power branch ( | 05-19-2011 |
20110172051 | INFINITELY VARIABLE TRANSMISSION - An infinitely variable power transmission comprising an input shaft, a layshaft driven by the input shaft via internal/external gearing, a toroidal variator, and gearing and clutches which implement a low/reverse variable ratio mode and a high range variable ratio mode. An additional clutch and gearing implement an optional fixed ratio mode. | 07-14-2011 |
20110172052 | CRANK-CVT TRANSMISSION - A crank-CVT transmission which has a freewheel device connected to an output shaft of the transmission. The device selectively enables and blocks a relative rotation between the device and the output shaft. The transmission further has a switching unit adapted to switch the device and an internal shaft, which can be connected to the output shaft and by a connecting element to a differential. The internal shaft can be displaced in the axial direction of the output shaft. The transmission further has an actuator interacting with the switching unit and adapted to initiate the switch of the device. The actuator has a first mechanism adapted to displace the internal shaft in the axial direction, disconnecting the internal shaft from the differential a second mechanism adapted to drive the switching unit. The second mechanism is coupled to the first mechanism and is driven after the first mechanism. | 07-14-2011 |
20110230298 | TRANSMISSION WITH MIXED PLANETARY LAYSHAFT STRUCTURE - A transmission includes an input member, an output member, a first and a second intermediate member, and a planetary gear set, all of which are coaxial and define a first axis of rotation. A first and a second layshaft are arranged to define a second axis of rotation and a third axis of rotation, respectively. Each of five sets of intermeshing gears transfer torque from a respective one of the intermediate members to a respective one of the layshafts via engagement of different respective ones of nine torque-transmitting mechanisms. A set of transfer gears transfers torque from the layshafts to the output member. One of the torque-transmitting mechanisms grounds a member of the planetary gear set to a stationary member. The nine torque-transmitting mechanisms are engagable in different combinations to establish up to eight forward speed ratios and at least one reverse speed ratio. | 09-22-2011 |
20120040794 | GEAR SCHEME FOR INFINITELY VARIABLE TRANSMISSION - A gear scheme for an infinitely variable transmission includes an input shaft, an output shaft, a variator, and a pair of planetary gearsets located beside the variator rather than in front of or behind the variator. The variator and the planetary gearsets are coupled between the input and output shafts. | 02-16-2012 |
20120142479 | TRANSMISSION MODULE FOR A VEHICLE - A transmission module | 06-07-2012 |
20130150200 | SHIFTING DEVICE AND GEAR UNIT - The present invention relates to a shifting device for a transmission unit of a vehicle, in particular a vehicle that is driven by muscle force. The transmission unit has a first shaft, which is formed as a hollow shaft, on which a plurality of free gears is mounted. The free gears are in engagement with a corresponding plurality of gearwheels, which are mounted on a second shaft, wherein the free gears are connectable to the first shaft by means of selecting devices. The selecting devices can be actuated by means of a camshaft arranged coaxially in the first shaft, wherein the camshaft is connected to a driving device in order to be rotated relative to the first shaft to actuate the selecting means. | 06-13-2013 |
20130337961 | DUAL CLUTCH GEARBOX - A double clutch transmission with two clutches (K | 12-19-2013 |
20140309071 | BACKLASH-FREE PLANETARY GEAR ASSEMBLY - A backlash-free planetary gear assembly comprising at least a first planet carrier member ( | 10-16-2014 |
20140329633 | POWERSHIFT TRANSMISSION FOR A MOTOR VEHICLE AND METHOD FOR CONTROLLING A POWERSHIFT TRANSMISSION - A motor vehicle powershift transmission which comprising two partial transmissions (TG | 11-06-2014 |
20150119183 | DOUBLE CLUTCH TRANSMISSION OF VEHICLE - A double clutch transmission of a vehicle is disclosed. The double clutch transmission may selectively transmit power of a power source to two input shafts through two clutches and may output changed power through two output shafts after the power selectively transmitted to the two input shafts is changed. The two input shafts may respectively have a plurality of input gears fixed thereon, the two output shafts may respectively have a plurality of speed gears rotatable on the output shafts and a plurality of synchronizers operably connecting each speed gear to any one of the output shafts, and each input gear may be engaged with at least one speed gear. | 04-30-2015 |
20150126321 | TRANSMISSION FOR VEHICLE AND METHOD FOR OPERATION OF A TRANSMISSION - The invention concerns a method for operating a transmission, in particular a dual-clutch transmission for a motor vehicle, which comprises at least two partial transmissions each of the partial transmissions having at least one input shaft on a drive input side of the transmission, which are arranged on an input shaft axis, an output shaft as the drive output shaft of the at least two partial transmissions on a drive output side of the transmission, wherein the drive output shaft is arranged on the input shaft axis or on at least one countershaft axis, in particular one that is parallel to the input shaft axis, an intermediate gear system on the at least one countershaft axis with at least one countershaft, wherein at least one of the input shafts can be connected by way of at least one gear plane and/or at least one shifting element to the drive output shaft, wherein at least four gear planes are arranged for obtaining forward gears and at least six shifting elements are provided and wherein on the at least one countershaft axis in each case only one countershaft is arranged, which has only transmission elements in the sense of fixed wheels for the one countershaft concerned, wherein by means of the transmission at least a plurality of forward gears and/or reverse gears can be obtained, and wherein at least one of the gears obtainable by means of the transmission is designed as a direct gear, such that when the direct gear is engaged all the shifting elements for coupling the intermediate gear system via the gear planes into the force flow can be disengaged, wherein each gear plane can be coupled by means of a shifting element arranged on the input shaft axis to a shaft, and wherein the gear next-lower than the direct gear is designed as a coupling gear. | 05-07-2015 |
20150300470 | DUAL CLUTCH TRANSMISSION - A dual clutch transmission as a speed-change transmission for motor vehicles, includes two coaxially arranged input shafts, each being activatable via a clutch, an output shaft and gearwheel sets that are mounted on the shafts and can be shifted by means of shifting clutches to allow a plurality of forward gears and a reverse gear, the gearwheel sets being subdivided into a sub-transmission having the one input shaft and a sub-transmission having the other input shaft. To achieve a wider gear-ratio spread in a structurally compact construction, a shifting unit that can be shifted between two gear ratio stages is mounted upstream of the sub-transmission having the hollow input shaft. | 10-22-2015 |
20160102735 | Multi-Speed Transmission - A family of transmission gearing arrangements provides between eight and ten forward speed ratios and a reverse speed ratio. Three planetary gear sets are located on the input axis and a fourth planetary gear set is located on an offset axis. Axis transfer gears convey power between the input axis and the offset axis. One axis transfer gear is supported by a front support while another is supported by a center support. The center support also supports a clutch module and supplies pressurized fluid to engage the clutches in the clutch module. | 04-14-2016 |
20160138693 | Shift Power Transmission Apparatus and Travel Power Transmission Device - Disclosed is a shift power transmission apparatus for readily suppressing or avoiding size increase thereof. The apparatus includes an input shaft ( | 05-19-2016 |
20160146320 | Torque Split Dual-Clutch Transmission - A torque split dual-clutch transmission assembly is disclosed that splits the torque generated by an engine between at least two sets of transfer gears that are selectively coupled to first and second layshafts or intermediate shafts. A first input hub is connected to the first layshaft by a first clutch and a second input hub is connected to the second layshaft by a second clutch. A first gearset is carried on the first layshaft and a second gearset is carried on the second layshaft. Each set of transfer gears receives torque from either the transmission input shaft or the first and second layshafts in response to contemporaneous engagement of the first clutch and the second clutch, which can be used during vehicle launch to split the torque applied to the first and second clutches. | 05-26-2016 |
20160146321 | Dual-Clutch Transmission with Multiple First Gears - A dual-clutch transmission assembly is disclosed that splits the torque generated by an engine between first and second layshafts. A first input hub is connected to the first layshaft by a first clutch and a second input hub is connected to the second layshaft by a second clutch. A first gearset is carried on the first layshaft and a second gearset is carried on the second layshaft. The first gearset includes a primary first gear and the second gearset includes a duplicate first gear. The first and second layshafts receive torque from the transmission input shaft in response to contemporaneous engagement of the primary first gear, the duplicate first gear, and the first and second clutches, which can be used during vehicle launch to split the torque applied to the first and second clutches. | 05-26-2016 |
20160377155 | TRANSMISSION ASSEMBLY - A transmission assembly for a drive train of a vehicle for connecting a drive motor to a traction drive of the vehicle, includes a main shift transmission with multiple transmission-ratio stages, wherein multiple shift states of the main shift transmission can be connected by a shifting, as required, by means of shift points of one or more transmission-ratio stages, and a planetary gear, wherein the main shift transmission and the planetary gear are drivingly connected or can be connected as required to each other by means of two connection shafts. | 12-29-2016 |