Multi-speed transmission

Details Multi-speed transmission Multi-speed transmission

2011-07-19

2011-07-19

Le, David D (Department: 3655)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

C475S275000, C475S277000, C475S278000, C475S330000

Reexamination Certificate

active

07980988

ABSTRACT:
A 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 include clutches and brakes.

REFERENCES:
patent: 6176803 (2001-01-01), Meyer et al.
patent: 6984187 (2006-01-01), Biermann
patent: 6991578 (2006-01-01), Ziemer
patent: 7011597 (2006-03-01), Haka
patent: 7018319 (2006-03-01), Ziemer
patent: 7566283 (2009-07-01), Gumpoltsberger
patent: 7674200 (2010-03-01), Shim

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