Gear shifter for automatic transmission

Details Gear shifter for automatic transmission Gear shifter for automatic transmission

2005-04-26

2005-04-26

Marmor, Charles A. (Department: 3681)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

C475S275000, C475S276000

Reexamination Certificate

active

06884197

ABSTRACT:
A gear shift control apparatus has a higher degree of freedom for selecting a gear ratio than that of a Ravigneaux type composite planetary gear train, while achieving a strength advantage of the gear train, an improvement in the fuel economy, a coaxial positioning of an input portion and an output position, and a size reduction of an automatic transmission. The apparatus achieves six forward speeds and one reverse speed by properly engaging/releasing three clutches and two brakes. One of three planetary gearsets is a speed-reducing or speed-increasing device for reducing/increasing the speed of an input rotation. One of the remaining two planetary gearsets is a double sun gear type planetary gearset, a carrier of which has a center member for inputting or outputting a rotation from between two sun gears.

REFERENCES:
patent: 3722323 (1973-03-01), Welch
patent: 3815445 (1974-06-01), Gorrell et al.
patent: 3863524 (1975-02-01), Mori et al.
patent: 4027551 (1977-06-01), Murakami et al.
patent: 4027552 (1977-06-01), Murakami et al.
patent: 4513634 (1985-04-01), Ohtsuka
patent: 5106352 (1992-04-01), Lepelletier
patent: 5133697 (1992-07-01), Hattori
patent: 6342026 (2002-01-01), Takagi et al.
patent: 6752737 (2004-06-01), Ishimaru et al.
patent: 20020091032 (2002-07-01), Hayabuchi et al.
patent: 20030186775 (2003-10-01), Ishimaru et al.
patent: 50-160649 (1975-12-01), None
patent: 51-64156 (1976-06-01), None
patent: 51-91465 (1976-08-01), None
patent: 02118240 (1990-05-01), None
patent: 4-219553 (1992-08-01), None

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