Geared-neutral continuously variable transmission
A continuously variable transmission is described comprising: input drive means; output drive means, a variable ratio friction belt drive means drivingly connected to the input drive means and including a driven shaft; fixed ratio drive means having an input shaft and an output shaft; selectively engageable first clutch means for connecting the input drive means to the input shaft; planetary gear means having a sun gear connected to the driven shaft, a ring gear drivingly connected with the output drive means and carrier and pinion gear means drivingly connected between the sun gear and the ring gear; second clutch means being selectively engageable for connecting the sun gear to the output drive means; third clutch means being selectively engageable for connecting the output shaft to the carrier and pinion gear means; and oneway clutch means disposed in parallel drive relation with the third clutch means for transmitting torque to the carrier and pinion gear means when the third clutch means is disengaged and the output shaft is attempting to rotate faster than the carrier and pinion gear means.
- Assignee:
- General Motors Corp., Detroit, MI
- Patent Number(s):
- US 4644820
- OSTI ID:
- 6719981
- Country of Publication:
- United States
- Language:
- English
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