Multiple-speed transmission for automotive vehicle

Details Multiple-speed transmission for automotive vehicle Multiple-speed transmission for automotive vehicle

2006-05-02

2006-05-02

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

07037232

ABSTRACT:
A multiple-speed transmission provides a wide gear ratio coverage for an automotive vehicle by using a basic structure of a six-speed transmission. The multiple-speed transmission is comprised of a combination of three planetary gearsets, three clutches, and three brakes. Each speed is established by applying two of six elements of three clutches and three brakes.

REFERENCES:
patent: 6752737 (2004-06-01), Ishimaru et al.
patent: 6827664 (2004-12-01), Stevenson et al.
patent: 6878087 (2005-04-01), Tsuga
patent: 6863635 (2005-06-01), Tsuga
patent: 6905434 (2005-06-01), Sugihara et al.
patent: 6918852 (2005-07-01), Choi
patent: 6935985 (2005-08-01), Ishimaru
patent: 182785 (2001-07-01), None
U.S. Appl. No. 10/889,049, filed Jul. 13,2004, Ishimaru.

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