Planetary gear transmission systems or components – Nonplanetary variable speed or direction transmission... – Nonplanetary transmission is friction gearing
Patent
1998-02-05
1999-12-14
Wright, Dirk
Planetary gear transmission systems or components
Nonplanetary variable speed or direction transmission...
Nonplanetary transmission is friction gearing
476 55, F16H 1520
Patent
active
060010428
ABSTRACT:
The present invention is directed to a continuously variable transmission for varying the speed ratio of an output shaft relative to an input shaft driven by a vehicle engine or other input power source. In an embodiment of the invention, the power transmission system includes a driven input member coupled in driving engagement with at least one rotor to transfer torque to the rotor. A disk member is positioned in cooperative relationship with a rotatable shaft and in a driving engagement with the rotor, such that the disk member is driven to transfer torque to the rotatable shaft. An output member is driven by the rotatable shaft, and torque is transferred from the shaft to the output member, with the disk member being selectively axially moveable relative to the rotor and to the rotatable shaft in response to output load torque on the output member so as to vary the torque transferred from the rotor. There may also be provided a gear system driven by the at least one rotor which may include a planetary gear set and clutch system in parallel cooperation with the output torque of the disk member and cooperating rotatable shaft to extend the speed range of the output member and to provide other beneficial aspects.
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