Patent ID: 7442145
Filing Date: 2008-10-28
Classification: F16H

Abstract:
1. A multi-speed transmission comprising: an input shaft; an output shaft; first, second and third planetary gear sets each having first, second and third members; said output shaft being continuously interconnected with a member of said planetary gear sets; said input shaft being continuously or selectively interconnected with another member of said planetary gear sets; said first member of said first planetary gear set being continuously interconnected with said first member of said second planetary gear set; said second member of said first planetary gear set being continuously interconnected with said second member of said second planetary gear set; a first torque-transmitting mechanism selectively interconnecting a member of said first or second planetary gear set with a member of said third planetary gear set; a second torque-transmitting mechanism selectively interconnecting another member of said third planetary gear set with said first or second planetary gear sets; a third torque-transmitting mechanism selectively interconnecting a member of said first or second planetary gear set with said input member or with another member of said third planetary gear set; a fourth torque-transmitting mechanism selectively interconnecting a member of said first or second planetary gear set with a stationary member; a fifth torque-transmitting mechanism selectively interconnecting a member of said third planetary gear set with said stationary member; said torque-transmitting mechanisms being engaged in combinations to establish at least six forward speed ratios and at least one reverse speed ratio between said input shaft and said output shaft.