Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive – Plural elements selectively braked
Reexamination Certificate
2006-04-25
2006-04-25
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
07033299
ABSTRACT:
The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least eight forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets having seven torque-transmitting mechanisms and three fixed interconnecting members. The powertrain includes an engine that is selectively connectable to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The seven torque-transmitting mechanisms provide interconnections between various gear members and the transmission housing, and are operated in combinations of three to establish at least eight forward speed ratios and at least one reverse speed ratio.
REFERENCES:
patent: 4070927 (1978-01-01), Polak
patent: 4709594 (1987-12-01), Maeda
patent: 5106352 (1992-04-01), Lepelletier
patent: 5385064 (1995-01-01), Reece
patent: 5497867 (1996-03-01), Hirsch et al.
patent: 5560461 (1996-10-01), Loeffler
patent: 5599251 (1997-02-01), Beim et al.
patent: 5641045 (1997-06-01), Ogawa et al.
patent: 5651435 (1997-07-01), Perosky et al.
patent: 5975263 (1999-11-01), Forsyth
patent: 6053839 (2000-04-01), Baldwin et al.
patent: 6071208 (2000-06-01), Koivunen
patent: 6083135 (2000-07-01), Baldwin et al.
patent: 6217474 (2001-04-01), Ross et al.
patent: 6354416 (2002-03-01), Eo
patent: 6375592 (2002-04-01), Takahashi et al.
patent: 6422969 (2002-07-01), Raghavan et al.
patent: 6425841 (2002-07-01), Haka
patent: 6471615 (2002-10-01), Naraki et al.
patent: 6558287 (2003-05-01), Hayabuchi et al.
patent: 6623397 (2003-09-01), Raghavan et al.
patent: 2005/0215380 (2005-09-01), Bucknor et al.
patent: 2005/0227805 (2005-10-01), Usoro et al.
patent: 2005/0245345 (2005-11-01), Bucknor et al.
patent: 2005/0250615 (2005-11-01), Usoro et al.
patent: 09-126283 (1997-05-01), None
Bucknor Norman K.
Raghavan Madhusudan
Usoro Patrick B.
General Motors Corporation
Marra Kathryn A.
Wright Dirk
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