Continuously variable traction roller transmission

Details Continuously variable traction roller transmission Continuously variable traction roller transmission

1989-02-28

1990-11-06

Diehl, Dwight

Planetary gear transmission systems or components

Planet pinion is friction gear

Variable speed ratio

74193, 74200, F16H 1550

Patent

active

049682890

ABSTRACT:
A continuously variable traction roller transmission. The transmission comprises a casing; input and output shafts passing through the interior of the casing; opposite paired input and output toroidal discs coaxially disposed about the input shaft; paired traction rollers disposed between and in engagement with the input and output discs. The transmission further comprises a first device for connecting the input shaft to the input disc to achieve a united rotation between them and biasing the input disc toward the output disc in accordance with a magnitude of torque applied to the input shaft; a second device disposed between the input shaft and the input disc for constantly biasing the input disc toward the output disc; and a third device for reducing a friction force which is produced between the input disc and the input shaft by the second device when a relative rotation therebetween takes place.

REFERENCES:
patent: 2956441 (1960-10-01), de Brie Perry
patent: 3142189 (1964-07-01), Davis et al.
patent: 3184983 (1965-05-01), Kraus
patent: 3430504 (1969-03-01), Dickenbrock
patent: 3494224 (1970-02-01), Fellows et al.
patent: 3820408 (1974-06-01), Louis
patent: 3820416 (1974-06-01), Kraus
patent: 4484487 (1984-11-01), Kraus
patent: 4576055 (1986-03-01), Kraus

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