Power transmission mechanism

Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive – Plural elements selectively braked

Reexamination Certificate

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Reexamination Certificate

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07128683

ABSTRACT:
A power transmission mechanism for an automatic transmission, configured to establish seven or more forward speeds and one reverse speed. The power transmission mechanism includes four simple planetary gears, three connection members interconnecting two of the rotating members of the planetary gears, three clutches selectively connectable between two of the rotating members, and four brakes each operable to hold selectively against rotation one of the rotating members.

REFERENCES:
patent: 6176803 (2001-01-01), Meyer et al.
patent: 6302820 (2001-10-01), Ried
patent: 2000-266138 (2000-09-01), None

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