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| Number | Title | Issue Date |
| 8171813 | Dual clutch transmission A double clutch transmission with two clutches that have inputs connected to a drive shaft and outputs which are each connected to one of first and second transmission input shafts. Fixed gears are coupled to the input shafts and engage idler gears. Several coupling... | 05/08/2012 |
| 8166840 | Twin clutch type speed change control system In a twin clutch type speed change control system in which changeover of gear position is carried out by switching between a pair of clutches, to suppress the noises of clutch being in the disengaged condition during a normal operation with a fixed gear position. In... | 05/01/2012 |
| 8166842 | Dual clutch transmission A dual-clutch transmission comprising clutches with input sides coupled to an input shaft and output sides respectively coupled to two transmission input shafts. Toothed idler gearwheels are mounted to rotate on countershafts while toothed fixed gearwheels are conne... | 05/01/2012 |
| 8166841 | Manual transmission for a motor vehicle A transmission for a motor vehicle is provided that includes, but is not limited to, a drive shaft and at least two countershafts which can be driven by the drive shaft with opposite rotational directions. A first one of the countershafts carries a hollow shaft whic... | 05/01/2012 |
| 8151662 | Electric dual input clutch transmission A dual transmission includes a first input shaft, a second input shaft, a first input clutch adapted to drivingly couple a power source to the first input shaft and a second input clutch adapted to drivingly couple the power source to the second input shaft. First, ... | 04/10/2012 |
| 8146451 | Drive for a vehicle, in particular a lorry A drive has a drive source with an outgoing drive shaft, which can be connected via a clutch to a first input of a gear, which is formed by an input shaft. The gear also has an output, which is formed by an output shaft. The gear also has a second input, which is fo... | 04/03/2012 |
| 8117933 | Five speed dual clutch transmission A transmission includes an input member, an output member, first and second shafts, first and second countershafts, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronize... | 02/21/2012 |
| 8109166 | Twin clutch speed-change apparatus A twin clutch speed-change apparatus that can reduce shift shock includes a transmission with multiple gear pairs disposed between a main shaft and a countershaft. A twin clutch is provided on the main shaft, a rotational drive force from an engine being connected/d... | 02/07/2012 |
| 8104366 | Double-clutch transmission for vehicles A double-clutch transmission is provided that includes, but is not limited to an inner input shaft inside an outer input shaft. Two clutch discs are connected to the inner input shaft and the outer input shaft, respectively. A first layshaft and a second layshaft ar... | 01/31/2012 |
| 8074529 | Arrangement for reducing rattling in a transmission An arrangement for reducing rattling in a transmission of counter shaft design having first countershafts (3, 4) and a load-equalizing main shaft (7) in which each transmission ratio step comprises a loose wheel (6), arranged on the main shaft (... | 12/13/2011 |
| 8069743 | Shift operation device of automatic transmission A shift operation device includes: a shift operation member including: a shaft portion; and an arm portion protruding in a radial direction with respect to a center axis of the shaft portion and being rotated around the center axis to perform shift operation of a ge... | 12/06/2011 |
| 8069742 | Multi-group transmission of a motor vehicle A motor vehicle transmission having at least two transmission groups and a method for operation of the transmission in which a mechanism is provided for maintaining traction force during gearshifts. A first friction clutch is an intermediate-gear clutch connected to... | 12/06/2011 |
| 8056429 | Multi-speed dual clutch transmission with countershaft gearing arrangement A transmission is provided having a dual clutch to achieve torque flow through a dual countershaft gearing arrangement. The countershaft gearing arrangement includes a plurality of co-planar gear sets having gears that are selectively connectable to a first counters... | 11/15/2011 |
| 8042418 | Double-clutch transmission In a double-clutch transmission, a clutch of an input shaft which is not synchronously rotated with a output shaft is connected to synchronize the speed of rotation of the input shaft with that of the engine, and the rotational speed of the input shaft is measured t... | 10/25/2011 |
| 8024988 | Drive unit for a motor vehicle A drive unit for a motor vehicle, comprising an engine, a transmission or gearbox, a clutch aggregate for transmitting torque, the clutch aggregate including at least two friction clutches that are assigned to an input shaft of the transmission or gearbox, wherein a... | 09/27/2011 |
| 8011261 | Multi-speed transmission with countershaft gearing arrangement A transmission is provided having a dual clutch to achieve torque flow through a countershaft gearing arrangement. The countershaft gearing arrangement includes a plurality of co-planar gear sets having gears that are selectively connectable to a countershaft. A tra... | 09/06/2011 |
| 8001863 | Bearing arrangement of the transmission shafts of a twin-clutch transmission An arrangement of bearings for transmission shafts of a twin-clutch transmission having a first input shaft connected with a first clutch, a hollow second input shaft co-axially supported on the first input shaft and connected with a second clutch and a main shaft, ... | 08/23/2011 |
| 7913581 | Dual clutch transmission with multiple range gearing A vehicle powertrain comprising dual torque input clutches and a multiple speed transmission with ratio range gearing is disclosed. The range gearing provides increased gear ratio coverage. A transition between a low speed ratio range and a high speed ratio range is... | 03/29/2011 |
| 7913580 | Apparatus and method for securing transmission gear synchronizers to shafts A device and method for preloading a transmission shaft assembly is disclosed. The transmission having the device of the present invention generally has a plurality of gears for providing a plurality of speed ratios. The shaft assembly has a first shaft, a first sle... | 03/29/2011 |
| 7886626 | Multi-speed dual clutch transmission A transmission is provided having an input member, an output member, a dual clutch assembly, a countershaft, a plurality of co-planar gear sets, a plurality of interconnecting members, and a plurality of torque transmitting devices. The torque transmitting devices i... | 02/15/2011 |
| 7878083 | Dual clutch transmission A dual clutch transmission has a housing, a drive shaft arrangement, an output shaft and a countershaft. A plurality of gear sets is supported on the drive shaft arrangement and the countershaft, respectively. The gear sets are shifted by means of respective shiftin... | 02/01/2011 |
| 7845246 | Twin-clutch transmission system A twin-clutch transmission system in a power unit for a vehicle includes a clutch system with a pair of hydraulic clutches, which respectively include clutch pistons. A gear transmission includes a first main shaft, which has a first end portion linked to a first on... | 12/07/2010 |
| 7841252 | Powershift gearbox and shifting method therefor A powershift gearbox includes a first and a second gearbox block in which respectively one gear from a first or second set of gears associated with each gearbox block can be passed between an input shaft and an output shaft of the gearbox block. The inventive gearbo... | 11/30/2010 |
| 7832299 | Gear-type transmission apparatus A gear-type transmission apparatus includes a first input shaft, a second input shaft provided coaxially and rotatably relative to the first input shaft, a first counter shaft and a second counter shaft arranged in parallel to the first and the second input shafts, ... | 11/16/2010 |
| 7779712 | Double clutch transmission for a motor vehicle The transmission comprises a gearbox having first and second input shafts coaxial to one another, wherein the second input shaft carries driving gearwheels associated to the even gears (second, fourth and sixth) and to the highest gear (sixth or seventh); and a clut... | 08/24/2010 |
| 7775133 | Vehicle transmission A vehicle transmission includes first and second main shafts that enable switching of power transmission from an engine; a counter shaft connected to a drive wheel; and gear trains with a plurality of shift stages provided between each of the first and second main s... | 08/17/2010 |
| 7748286 | Dual clutch transmission having reduced axial length A multiple speed power transmission comprises: an input; an output; first and second input shafts releasably coupled to the input by first and second friction clutches, respectively; a countershaft disposed parallel to the first and second input shafts; an output pi... | 07/06/2010 |
| 7665376 | Dual clutch powershift transmission An automated dual-clutch multi-speed transmission is adapted to transfer power from an engine to the driveline of a motor vehicle. The transmission includes an output shaft adapted for connection to the driveline, an input shaft continuously driven by the engine and... | 02/23/2010 |
| 7640818 | Multi-speed transmission with a countershaft gearing A transmission is provided having a dual clutch, to achieve torque flow through a countershaft gearing arrangement. The countershaft gearing arrangement includes a plurality of co-planar gear sets having gears that are selectively connectable to a plurality of count... | 01/05/2010 |
| 7610825 | Multi-speed transmission with countershaft gearing A transmission is provided having a dual clutch, to achieve torque flow through a countershaft gearing arrangement. The countershaft gearing arrangement includes a plurality of co-planar gear sets having gears that are selectively connectable to a plurality of count... | 11/03/2009 |
| 7490526 | Dual clutch powershift transmission with transfer shaft A dual-clutch powershift transmission for use in a motor vehicle having an engine and a driveline includes an output shaft adapted for connection to the driveline, first and second input shafts, a first engine clutch operable for establishing a releaseable drive con... | 02/17/2009 |
| 7469609 | Output reduction dual clutch transmission with clutch coupler A multiple speed power transmission includes an input, first and second input shafts, first and second clutches for releasably coupling the input to the input shafts, and a set of selectable power paths connecting the first and second input shafts to the output, the... | 12/30/2008 |
| 7461567 | Shift operating apparatus A shift operating apparatus includes a shift and select shaft moved in an axial direction upon a shift operation and rotated about an axis upon a select operation, an inner lever provided at the shift and select shaft, the inner lever being moved in the axial direct... | 12/09/2008 |
| 7437964 | Double clutch transmission In a double clutch transmission of a drive train of a vehicle with rear-axle drive or all-wheel drive and a front longitudinally mounted drive engine, wherein concentric central shafts of the double clutch transmission are supported by first and second rolling beari... | 10/21/2008 |
| 7434487 | Twin clutch manual gearbox A twin-clutch manual gearbox has a first input shaft and a second input shaft to which engine rotation is selectively input via individual clutches. The second input shaft is rotatably fitted onto the first input shaft so that the first input shaft protrudes from an... | 10/14/2008 |
| 7428852 | Actuator mechanism for shift motors of a transmission A system for actuating couplers to produce gear changes in a motor vehicle transmission includes first and second actuator drums supported for rotation, and first and second shift forks. Each first shift fork is driveably connected to a first actuator drum, secured ... | 09/30/2008 |
| 7428853 | Transmission apparatus having a clutch A vehicle transmission apparatus includes an engine generating a driving force; a transmission having, therein, at least one input shaft being connectable to the engine and an output shaft connected to a drive wheel, the transmission being capable of establishing, t... | 09/30/2008 |
| 7426880 | Gearbox for a double clutch transmission of a motor vehicle The gearbox comprises: a first, inner input shaft which carries a first and a second driving gear wheel associated with odd gears and with a reverse gear; a second, outer input shaft which is disposed coaxially with the first and carries a third and a fourth driving... | 09/23/2008 |
| 7421919 | Double clutch transmission A double clutch transmission with a double clutch, the input side of which can be driven and the output sides each communicate with one of two transmission input shafts that are arranged coaxially relative to one another, with an intermediate shaft and with fixed or... | 09/09/2008 |
| 7409886 | Twin clutch transmission with coaxial drive and output The invention relates to a twin clutch transmission of high efficiency which is compact in every dimension. This twin clutch transmission can be used particularly in vehicles having a longitudinally installed engine. For this purpose, the transmission input shaft an... | 08/12/2008 |
