Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive – Carrier braked
Reexamination Certificate
2007-10-17
2010-11-02
Le, David D (Department: 3655)
Planetary gear transmission systems or components
With means to vary drive ratio or disconnect drive
Carrier braked
C475S271000, C475S330000
Reexamination Certificate
active
07824304
ABSTRACT:
A transmission is disclosed having an input member, an output member, first, second and third planetary gear sets, a first interconnecting member, a second interconnecting member and six torque-transmitting mechanisms. The torque-transmitting mechanisms are selectively engageable in combinations of at least three to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member. The planetary gear sets each have first, second and third members. The six torque-transmitting mechanisms are selectively engageable to interconnect one of the first, second, and third members with another of the first, second, and third members.
REFERENCES:
patent: 5951432 (1999-09-01), Wehking
patent: 6669595 (2003-12-01), Raghavan et al.
patent: 6689011 (2004-02-01), Raghavan et al.
patent: 6746360 (2004-06-01), Bucknor et al.
patent: 7651434 (2010-01-01), Carey et al.
patent: 2004/0053732 (2004-03-01), Usoro et al.
Carey Clinton E.
Hart James M.
Phillips Andrew W.
Ross Craig S.
Wittkopp Scott H.
GM Global Technology Operations Inc.
Le David D
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