Transmission having ten or more speeds

Details Transmission having ten or more speeds Transmission having ten or more speeds

2011-08-09

2011-08-09

Young, Edwin A. (Department: 3655)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

C475S296000

Reexamination Certificate

active

07993237

ABSTRACT:
A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes. Moreover, the torque transmitting devices are selectively engageable in combinations of at least four to establish at least ten forward speed ratios and at least one reverse speed ratio between the input member and the output member.

REFERENCES:
patent: 6991578 (2006-01-01), Ziemer
patent: 7011597 (2006-03-01), Haka
patent: 7018319 (2006-03-01), Ziemer
patent: 2006/0019793 (2006-01-01), Bucknor et al.
patent: 2006/0052210 (2006-03-01), Park

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