Patent ID: 7749129

Claim:
A multi-speed transmission comprising: an input member; an output member; first, second, third and fourth planetary gear sets each having first, second and third members; a first interconnecting member continuously connecting said second member of said first planetary gear set with said third member of said third planetary gear set; a second interconnecting member continuously connecting said first member of said second planetary gear set with said third member of said third planetary gear set; a third interconnecting member continuously connecting said first member of said third planetary gear set with said first member of said fourth planetary gear set; said first member of said first planetary gear set being continuously connected with a stationary member; and five torque-transmitting devices for selectively interconnecting said members of said planetary gear sets with a stationary member or with other members of said planetary gear sets, said five torque-transmitting devices being engaged in combinations of three to establish at least eight forward speed ratios and at least one reverse speed ratio.