Powertrain of an automatic transmission

Details Powertrain of an automatic transmission Powertrain of an automatic transmission

2009-05-28

2011-12-20

Holmes, Justin (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

08079930

ABSTRACT:
A powertrain of an automatic transmission includes a first planetary gear set having first, second, and third operating members, a second planetary gear set having fourth, fifth, and sixth operating members, and a third planetary gear set having seventh, eighth, and ninth operating members, the second and fourth operating members being fixedly interconnected, the fifth and ninth operating members being fixedly interconnected, the fourth and seventh operating members being selectively interconnected, the third and eighth operating members being selectively interconnected, the sixth and eighth operating members being selectively interconnected, wherein a transmission case is fixedly connected to the first operating member and selectively connected to the seventh and eighth operating members, an input shaft is fixedly connected to the third operating member and selectively connected to the seventh operating member, and an output shaft is fixedly connected to the ninth operating member.

REFERENCES:
patent: 2005/0250615 (2005-11-01), Usoro et al.
patent: 2009/0209386 (2009-08-01), Kim
patent: 2005-106260 (2005-04-01), None

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