Multi-speed transmission

Details Multi-speed transmission Multi-speed transmission

2008-01-04

2010-11-02

Estremsky, Sherry (Department: 3655)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

C475S282000

Reexamination Certificate

active

07824300

ABSTRACT:
An automatic transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may be either brakes or clutches. Eight forward speeds or gear ratios and reverse are achieved by engaging various combinations of the brakes and clutches.

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