Patent ID: 7429229

Claim:
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 selectively interconnected with another member of said planetary gear sets; a first interconnecting member continuously interconnecting said first member of said first or second planetary gear set with said first member of said third planetary gear set; a second interconnecting member continuously interconnecting said second member of said first, second or third planetary gear set with said second member of said first, second or third planetary gear set or with a stationary member; a third interconnecting member continuously interconnecting a planet carrier assembly member of said first planetary gear set with a planet carrier assembly member of said second planetary gear set; a fourth interconnecting member continuously interconnecting said first planetary gear set with said second planetary gear set via long pinion gears; wherein only one of said first and second planetary gear sets has a ring gear member; a first torque-transmitting mechanism selectively interconnecting a member of said first or second planetary gear set with said input shaft; a second torque-transmitting mechanism selectively interconnecting another member of said first or second planetary gear set with said input shaft; a third torque-transmitting mechanism selectively interconnecting a member of said third planetary gear set with said input shaft; a fourth torque-transmitting mechanism selectively interconnecting a member of said first or second planetary gear set with said stationary member; a fifth torque-transmitting mechanism selectively interconnecting a member of said third planetary gear set with another member of said third planetary gear set or with said stationary member; and 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.