| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 074329000 | Disconnectable counter shaft | 16 |
| 20080282823 | Transmission for tractor - 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. | 11-20-2008 |
| 20090126522 | REVERSE DRIVE ASSEMBLY FOR A MOTORCYCLE - A reverse drive assembly for a motorcycle that includes a transmission assembly having a main shaft and a counter shaft. The reverse drive assembly includes a first drive member configured to be coupled to an opposite end of the main shaft, a second drive member configured to be coupled to a second end of the counter shaft, and an engagement member operatively positioned between the second drive member and the counter shaft. The engagement member is movable between a first position out of engagement with the second drive member and the counter shaft, and a second position in engagement between the second drive member and the counter shaft to drive the counter shaft in a reverse direction. In some constructions, the engagement member is operatively positioned between the first drive member and the main shaft. | 05-21-2009 |
| 20090205452 | Transmission for a commercial vehicle with a main group and a downstream group - In a commercial vehicle transmission with a main group and a downstream group including a downstream group countershaft, the downstream group includes means for decoupling the downstream group countershaft in direct through drive so that in direct through-drive the countershaft does not run in an oil sump and no churning losses occur thereby increasing vehicle transmission efficiency. | 08-20-2009 |
| 20090320629 | OUTPUT SHAFT REDUCTION-TYPE DUAL CLUTCH TRANSMISSION - A dual clutch transmission having two input shafts respectively connected to clutches, and an intermediate shaft, preventing the intermediate shaft from rotating idle when the vehicle is traveling at high speeds and avoiding excess stirring of lubricating oil in the transmission and increase in noise. In the dual clutch transmission, a direct connection clutch C | 12-31-2009 |
| 20100018336 | TRANSMISSION FOR INDUSTRIAL VEHICLE - A transmission for an industrial vehicle has an input shaft; first and second transmission mechanisms, each having a plurality of speed-change steps; a second transmission mechanism; a clutch mechanism; a rotation direction switching mechanism; and an output shaft. The clutch mechanism is disposed on the input side of the first and second transmission mechanisms and is provided with a forward clutch and a reverse clutch for switching between forward and reverse travel, and is further provided with first and second snap clutches for selecting which of the first and second transmission mechanisms will receive rotational input from the engine. The rotation direction switching mechanism is a mechanism for switching the direction of rotation inputted to the first transmission mechanism or the second transmission mechanism to the direction of rotation for forward travel or the direction of rotation for reverse travel in accordance with the switching of forward and reverse travel. | 01-28-2010 |
| 20100257952 | DOUBLE CLUTCH TRANSMISSION - A double clutch transmission with two clutches whose input sides are connected to a drive shaft and whose output sides are each connected to one of two transmission input shafts arranged coaxially with respect to one another. At least two countershafts are provided on which toothed idler gearwheels are rotatably supported, and toothed fixed gearwheels are positioned on the two transmission input shafts in a rotationally fixed manner such that it is possible to shift at least a plurality of power shiftable forward gears and at least one reverse gear. A maximum of six gear planes are provided so that at least one winding path gear is shiftable when a coupling device of the second countershaft, associated with the output gear, is disengaged. | 10-14-2010 |
| 20100257953 | DOUBLE CLUTCH TRANSMISSION - A double clutch transmission with two clutches whose input sides are connected to a drive shaft and whose output sides are each connected to one of two transmission input shafts positioned coaxial with respect to one another. At least two countershafts provided and support toothed idler gearwheels while the two transmission input shafts support toothed fixed gearwheels such that it is possible to shift at least a plurality of power shift forward gears and/or at least one reverse gear. Five gear planes are provided so that at least one winding path gear is shiftable when at least one coupling device, assigned to the output gear, is disengaged. | 10-14-2010 |
| 20110126652 | Adapter for Connecting a Countershaft Transmission with a Hydraulic Launch Assist System - This invention provides a common means of coupling an alternative power source to a vehicle's drive wheels which is particularly well suited for use with a countershaft-type transmission. This invention also addresses clutch wear by eliminating the need to engage the frictional clutch to launch the vehicle. This invention also improves the acceleration of the vehicle compared to a typical dry friction clutch launch by relying on the HLA system to transfer more power to the drive wheels more quickly than would be transferred by a typical launch engagement of a dry friction clutch in a commercial vehicle. | 06-02-2011 |
| 20120180585 | TRANSMISSION WITH HYDRAULICALLY ACTUATED SPLINED CLUTCH - A transmission includes an input member, an output member, and an intermediate member coaxially aligned with the input member and the output member. The transmission further includes at least one countershaft substantially parallel with the input member, output member and the intermediate member, and at least one gear associated with each of the input member, the output member, intermediate member, at least one countershaft. The transmission also includes a planetary gear set to operatively couple a gear of the at least one gear associated with the intermediate shaft with the output shaft, and a plurality of clutches to selectively define a torque transfer path from the input member to the output member via one or more of the intermediate member, first countershaft, second countershaft, and the at least one associated gears therewith. The plurality of clutches include a direct drive clutch to selectively couple the input member directly to the intermediate member. | 07-19-2012 |
| 20120216638 | ELECTRIC VEHICLE THREE SPEED DUAL CLUTCH TRANSMISSION - A transmission and components thereof that consists of three forward speed ratios for an electric vehicle market is brought forth. The transmission has an input shaft for receiving torsional energy from an electric motor. A counter shaft is provided which is powered from the input shaft. A first normally closed clutch is provided for powering the first and third gears. A second normally open clutch is provided for powering the second gear. A synchronizer rotatably is provided for selectively torsionally connecting the first of third gears. | 08-30-2012 |
| 20120247241 | DOG-CLUTCH TRANSMISSION SYSTEM - A dog-clutch transmission system having dog-clutches is provided that can effectively lower the sound resulting from the engagement of dogs during the meshing of gears. A dog-clutch transmission system includes first gears installed adjacent to each other on respective shafts so as not to be rotatable relatively to the respective shafts and to be axially slidable; and second gears installed so as to be rotatable relatively to the respective shafts and not to be axially slidable. Each of the first gears has dog-teeth projecting in the axial direction and each of the other gears has dog-holes recessed in the axial direction. Speed-stages are switchable by bringing the dog-teeth and the dog-holes into engagement and disengagement. A speed-change ratio proportion of a change-speed ratio at an arbitrary n-speed speed-stage to a speed-change ratio at a (n+1)-speed speed-stage is set at 0.725 or more. | 10-04-2012 |
| 20120266704 | POWER TRANSMISSION DEVICE - A power transmission device is comprised of a first shaft having a first gear and a second gear and capable of being drivingly coupled with the engine; a second shaft drivingly coupled with the electric motor and the first shaft; a third gear meshing with the first gear to form a first gearing having a first gear ratio; a fourth gear coaxial with the third gear, the fourth gear meshing with the second gear to form a second gearing having a second gear ratio; a third shaft coaxial with both the third gear and the fourth gear, the third shaft being drivingly coupled with the axles; a first clutch configured to selectively connect and disconnect the third gear with the third shaft; and a second clutch configured to selectively connect and disconnect the fourth gear with the third shaft. | 10-25-2012 |
| 20130192397 | HEAVY DUTY TRUCK TRANSMISSION WITH TRIPLE OVERDRIVE - A transmission capable of triple overdrive includes a main box section connected to a first input shaft. The main box section comprises clutch collars which are connected to the main shaft and axially movable by an operator to selectively couple one main shaft gear to a main shaft via a countershaft gear fixed on a countershaft. An auxiliary section is connected to the main box section and contains a splitter section and a range section. An output shaft is connected to the auxiliary section The transmission is selectively configured to operate in a plurality of gear combinations. At least three of the gear combinations are configured for overdrive. The main box section is connected directly to the splitter section. | 08-01-2013 |
| 20130291670 | VEHICLE WITH DUAL CLUTCH TRANSMISSION - A dual clutch transaxle provides eight forward gear ratios and two reverse gear ratios. The gears are arranged in seven gear planes. Four coupler assemblies are arranged to selectively sequentially engage each adjacent pair of the eight forward gear ratios to permit shifting among the eight forward gear ratios with continuous transmission of torque through the transaxle. | 11-07-2013 |
| 20150300478 | GEAR STRUCTURE OF TRANSMISSION - A transmission is provided that includes: a counter low-gear that is provided with a low-gear body and a boss fit into the low-gear body so that driving force can be transmitted and provided with dog-claws and an expanded part at one axial end and that is axially non-movably and rotatably fit around a counter shaft; a counter high-gear that is provided with a high-gear body arranged in the one side from the low-gear body and with a cylinder including dog-claws at the one axial end thereof and that is axially non-movably and rotatably fit around the boss; and a shift sleeve that is axially movably spline-fit around the counter shaft and is arranged in the one side from the counter high-gear and that includes dog-claws capable of engaging with the dog-claws of the gears, the high-gear body is axially non-movably arranged between the low-gear body and the expanded part. | 10-22-2015 |
| 20150362044 | TRANSMISSION WITH DUAL INPUT AND GEAR RATIO MULTIPLICATION - A transmission including: a first number of input shafts; an output shaft; a second number of gears non-rotatably connected to the output shaft; a third number of lay shafts; and full synchronizer clutches. Each full synchronizer clutch includes: a respective first half synchronizer clutch arranged to non-rotatably connect a respective first gear to a respective lay shaft included in the third number of lay shafts, and disconnect the respective first gear from the respective lay shaft; and a respective second half synchronizer clutch arranged to non-rotatably connect a respective second gear to the respective lay shaft, and disconnect the respective second gear from the respective lay shaft. The transmission is arranged to provide a fourth number of total reverse and forward speed ratios equal to the first number multiplied by the second number multiplied by the third number. | 12-17-2015 |
