Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive – Plural elements selectively braked
Patent
1990-02-05
1991-01-15
Wright, Dirk
Planetary gear transmission systems or components
With means to vary drive ratio or disconnect drive
Plural elements selectively braked
475277, 475288, 475284, 475285, F16H 5710
Patent
active
049850113
ABSTRACT:
An automatic transmission including gear trains, which are constructed of at least three planetary gear sets each having three rotating members. A first clutch is arranged closer to an input shaft than the first planetary gear set for connecting any one of the rotating members of the first planetary gear set arranged adjacent to the input shaft. A second clutch is also arranged closer to the input shaft than the first planetary gear set for connecting another of the rotating members of the first planetary gear set and the input shaft. A third clutch is interposed between the first planetary gear set and the second planetary gear set for connecting any one of the rotating members of the second planetary gear set arranged at the opposite side to the input shaft across the first planetary gear set and the any one or the another of the rotating members of either one of the first clutch and the second clutch or the first planetary gear set. A fourth clutch is interposed between the first planetary gear set and the second planetary gear set for connecting the another of the rotating members of the second planetary gear set and the any one or the another of the rotating members of the first clutch, the second clutch or the first planetary gear set.
REFERENCES:
patent: 2764904 (1956-10-01), Kummich
patent: 4233861 (1980-01-01), Gaus et al.
patent: 4660439 (1987-04-01), Hiraiwa
patent: 4884471 (1989-12-01), Daggett et al.
Abe Akiharu
Asada Toshiyuki
Higashiyama Yasuhiko
Moriguchi Naoki
Nakawaki Yasunori
Toyota Jidosha & Kabushiki Kaisha
Wright Dirk
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