Single cavity toroidal traction drive continually variable trans

Details Single cavity toroidal traction drive continually variable trans Single cavity toroidal traction drive continually variable trans

1998-09-17

1999-10-05

Wright, Dirk

Planetary gear transmission systems or components

Nonplanetary variable speed or direction transmission...

Nonplanetary transmission is friction gearing

F16H 364

Patent

active

059614153

ABSTRACT:
An automatic transmission for an automotive vehicle includes a traction drive variator having an input disc, an output disc, and rollers driveably engaged with the discs and adapted to vary continuously the ratio of the speeds of the output disc and input disc. The input disc is reversed and overdriven by a gearset whose ring gear is connected to an input shaft; carrier is held permanently; and sun gear drives the input disc. A planetary gear unit driven by the output disc produces a speed reduction in response to alternate engagement of a forward drive brake and reverse drive brake.

REFERENCES:
patent: 4297918 (1981-11-01), Perry
patent: 4344336 (1982-08-01), Carriere
patent: 4355547 (1982-10-01), Poole et al.
patent: 4449423 (1984-05-01), Carroere
patent: 4464952 (1984-08-01), Stubbs
patent: 4481844 (1984-11-01), Ironside et al.
patent: 4638687 (1987-01-01), Perry
patent: 5879260 (1999-03-01), Yoshida et al.

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