Seven-speed transmission

Details Seven-speed transmission Seven-speed transmission

2005-06-28

2005-06-28

Wright, Dirk (Department: 3681)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

Reexamination Certificate

active

06910986

ABSTRACT:
A seven-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 specific members of the gear sets. Three interconnecting members continuously connect specific members of the gear sets. Three brakes and three clutches are engageable in combinations of two to establish seven forward speed ratios and a reverse speed ratio between the input shaft and the output shaft.

REFERENCES:
patent: 4070927 (1978-01-01), Polak
patent: 4709594 (1987-12-01), Maeda
patent: 5106352 (1992-04-01), Lepelletier
patent: 5599251 (1997-02-01), Beim et al.
patent: 6053839 (2000-04-01), Baldwin et al.
patent: 6071208 (2000-06-01), Koivunen
patent: 6083135 (2000-07-01), Baldwin et al.
patent: 6773370 (2004-08-01), Martyka et al.

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