Patent ID: 7204780
Filing Date: 2007-04-17
Classification: F16H

Abstract:
1. A transmission comprising: an input member; an output member; a stationary member; first, second, third, and fourth planetary gearsets each having respective first, second, and third members; said first member of said first planetary gearset being continuously operatively connected to said first member of said third planetary gearset for unitary rotation; said first member of said second planetary gearset being continuously operatively connected to said second member of said third planetary gearset for unitary rotation; said second member of said first planetary gearset being continuously operatively connected to said second member of said second planetary gearset for unitary rotation; said second member of said third planetary gearset being continuously operatively connected to said first member of said fourth planetary gearset for unitary rotation; said third member of said third planetary gearset being continuously operatively connected to said third member of said fourth planetary gearset for unitary rotation; said second member of said first planetary gearset being continuously operatively connected to said input member for unitary rotation; said second member of said fourth planetary gearset being continuously connected to said output member for unitary rotation; and first, second, third, fourth, fifth, and sixth torque transmitting devices operative to selectively connect members of said planetary gearsets with said input member, said stationary member, or with other members of said planetary gearsets to provide at least six forward speed ratios.