| Patent application number | Description | Published |
|---|
| 20080261747 | Adjusting device with a CVT planetary roller transmission - An adjusting device including a CVT planetary roller transmission having two axially-spaced sun wheels that are rotatable about a common axis of rotation and at different speeds of rotation. Planet wheels contact and ride against peripheral surfaces of each of the sun wheels, and an axially displaceable ring wheel lies radially outwardly of the sun wheels and engages a peripheral groove formed in the sun wheels. When the ring wheel is axially displaced relative to the sun wheels the axes of rotation of the planet wheels tilt relative to the sun wheel axis resulting in a difference in the rotational speed of the sun wheels changes. The device can be employed as an adjusting device for adjusting the rotational speed of connected units, and also as a drive line component having a variable transmission ratio and situated in a power train of a motor vehicle. | 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 |
| 20090017959 | Vehicle transmission with continuously variable transmission ratio - A first embodiment of a vehicle transmission with continuously variable transmission ratio contains a CVT variator with two variator shafts, an input shaft that can optionally be brought into rotational engagement with one or the other of the variator shafts, and an output shaft that can optionally be brought into rotational engagement with one or the other of the variator shafts, such that two forward driving ranges with opposite torque transmission directions of the CVT variator are present, whose transmission ratio ranges are constantly contiguous with each other. | 01-15-2009 |
| 20090017960 | Power-branched, continuously variable vehicle transmission - A power-branched, continuously variable vehicle transmission includes a CVT variable speed drive that is connected to an input shaft through a planetary gear train and to an output shaft through a multistage gearbox. In an alternative embodiment, one variable speed drive shaft of the variable speed drive is connected to an input shaft, and the variable speed drive shafts are connected to an output shaft through a planetary gear train module. The power-branched transmission is compactly constructed, but permits a high start-up torque and enables a wide transmission ratio spread. | 01-15-2009 |
| 20090173318 | Compressor drive system with variable rotational speed - A compressor drive system for driving a compressor of an internal combustion engine contains a variable speed drive unit and a planetary gear set, the planetary gear set being connected to the internal combustion engine and the compressor in such a way that a first output shaft of the planetary gear set is connected to the compressor, a first drive shaft of the planetary gear set is connected to the internal combustion engine, and a second drive shaft of the planetary gear set is connected to the internal combustion engine through the variable speed drive unit. | 07-09-2009 |
| 20090215570 | Planetary transmission with continuously variable transmission ratio - A planetary transmission having a continuously variable transmission ratio. The transmission includes two sun wheels having sun wheel circumferential surfaces, and that are axially spaced and rotatable independently of each other around the same axis of rotation. A ring wheel is situated on the same axis as the sun wheels and has an internal circumferential surface. Planet wheels are provided having planet wheel circumferential surfaces that are in frictional contact with the internal circumferential surface of the ring wheel and the sun wheel circumferential surfaces. A web element is also provided, and the planet wheels are each rotatable about an associated planet wheel axle, which is guided in the web element so that it is movable in the radial direction relative to the transmission longitudinal axis. | 08-27-2009 |
| 20110160012 | VEHICLE TRANSMISSION HAVING CONTINUOUSLY VARIABLE GEAR RATIOS - A vehicle transmission having continuously variable transmission ratios including an input shaft and an intermediate shaft. A first conical disk pair is disposed on a first shaft and a second conical disk pair is disposed on a second shaft. A belt connects the disk pairs. An intermediate gear that can be rotatably engaged with the first shaft, and an output gear, are rotatably supported on the intermediate shaft. A connecting gear is non-rotatably disposed on the intermediate shaft. A first force transmitting device is disposed between the input shaft and intermediate shaft, a second force transmitting device is disposed between the input shaft and the intermediate gear, a third force transmitting device is disposed between the intermediate gear and output gear, and a fourth force transmitting device is disposed between the intermediate shaft and the output gear. At least one of the force transmitting devices is a freewheel. | 06-30-2011 |
