Friction roller type continuously variable transmission

Details Friction roller type continuously variable transmission Friction roller type continuously variable transmission

1992-04-29

1993-05-25

Herrmann, Allan D.

Planetary gear transmission systems or components

Input from independent power sources

Intermeshing planet pinions in drive train

475 42, F16H 1538

Patent

active

052129977

ABSTRACT:
A friction roller type continuously variable transmission comprises an input shaft, a first transmission mechanism, a second transmission mechanism, a thrust cam device and a hydraulically operated control device. The thrust cam device biases respective input discs of the first and second transmission mechanisms toward respective output discs of the same in accordance with a torque possessed by the input shaft. The biasing for the second input disc is indirectly made through the input shaft. The control device varies the speed change ratio of each transmission mechanism. A feedback control mechanism is employed, which is incorporated with the second transmission mechanism for feeding back the existing condition of the second transmission mechanism to the control device.

REFERENCES:
patent: 4434675 (1984-03-01), Kraus
patent: 5052236 (1991-10-01), Nakano
patent: 5099710 (1992-03-01), Nakano

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