Six-speed power train of automatic transmission for vehicle

Details Six-speed power train of automatic transmission for vehicle Six-speed power train of automatic transmission for vehicle

2006-11-08

2008-10-21

Pang, Roger (Department: 3681)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

C475S280000

Reexamination Certificate

active

07438662

ABSTRACT:
A six-speed power train of an automatic transmission for a vehicle includes: a first, double pinion planetary gear set including a first operational element always operating as an input element, a second operational element selectively operating as an output and a fixed element, and a third operational element selectively operating as an input element, an output element, and a fixed element; a second, Ravingneaux type planetary gear set including a first operational element selectively operating as an input element, a second operational element always operating as an output element, a third operational element selectively operating as an input element and a fixed element, and a fourth operational element selectively operating as a fixed element; a plurality of clutches disposed between and variably connecting operational elements of the first and second planetary gear sets; and a plurality of brakes variably connecting a transmission housing with one of the fixed elements.

REFERENCES:
patent: 5133697 (1992-07-01), Hattori
patent: 6849022 (2005-02-01), Miyazaki et al.
patent: 7300383 (2007-11-01), Nozaki et al.
patent: 2004/0026155 (2004-02-01), Miyata et al.
patent: 2005/0202924 (2005-09-01), Friedmann et al.
patent: 2005/0255958 (2005-11-01), Tiesler et al.

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