Seven-speed transmission

Details Seven-speed transmission Seven-speed transmission

2006-03-07

2006-03-07

Lewis, Tisha (Department: 3681)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

C475S114000, C475S284000

Reexamination Certificate

active

07008346

ABSTRACT:
A multi-speed transmission includes an input shaft, an output shaft, and a planetary gear arrangement having three planetary gear sets. The input shaft and output shaft are continuously connected with members of the planetary gear sets. Six torque-transmitting mechanisms selectively connect specific members of the planetary gear sets with other members of the planetary gear sets, or with the transmission housing. Fluid for applying two of the torque-transmitting mechanisms is carried through a shaft which is connected to a sun gear of the first planetary gear set. The six torque-transmitting mechanisms are engaged in combinations of three to establish seven forward speed ratios and a reverse speed ratio between the input shaft and the output shaft.

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