Patent ID: 7686732

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