Toroidal traction drive transmission having multiple speed input

Details Toroidal traction drive transmission having multiple speed input Toroidal traction drive transmission having multiple speed input

1998-04-06

2000-10-03

Marmor, Charles A

Planetary gear transmission systems or components

Nonplanetary variable speed or direction transmission...

Nonplanetary transmission is friction gearing

475215, F16H 1538

Patent

active

061265675

ABSTRACT:
An automatic transmissions for an automotive vehicle includes a variator of the traction drive type, the variator including 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. Each of two planetary gearsets includes a carrier, a sun gear and a ring gear and a set of planet pinions meshing with the respective sun gear and ring gear. Angular variation of the rollers causes the variator to drive the ring gear at a variable speed relative to engine speed and the carrier to rotate in accordance with the speeds of the sun gear and ring gear.

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patent: 4464952 (1984-08-01), Stubbs
patent: 4628766 (1986-12-01), de Brie Perry
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patent: 4768398 (1988-09-01), Greenwood
patent: 4922788 (1990-05-01), Greenwood
patent: 5090951 (1992-02-01), Greenwood
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patent: 5401221 (1995-03-01), Fellows et al.
patent: 5888161 (1999-03-01), McCarrick et al.
patent: 5921882 (1999-07-01), Hoge et al.

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