Patent ID: 8241169
Filing Date: 2012-08-14
Classification: F16H

Abstract:
1. A transmission comprising: an input member; an output member; first, second, third and fourth planetary gear sets each having first, second and third members, wherein each of the first, second, and third members is one of a ring gear, a sun gear, and a carrier member; a first torque transmitting device selectively engageable to connect at least one of the second member of the first planetary gear set and the input member with the first member of the fourth planetary gear set; a second torque transmitting device selectively engageable to connect the third member of the third planetary gear set with the first member of the fourth planetary gear set; a third torque transmitting device selectively engageable to connect the first member of the third planetary gear set with at least one of the third member of the fourth planetary gear set and the output member; a fourth torque transmitting device selectively engageable to connect the third member of the second planetary gear with a stationary member; a fifth torque transmitting device selectively engageable to connect the first member of the second planetary gear set with the stationary member; and at least four continuous connections from at least one of the first members, the second members, the third members, and the stationary member to at least one other of the first members, the second members, and the third members, wherein three of the first members, the second members, and the third members of the first, second, third, and fourth planetary gear sets are continuously connected with each other by two of the at least four continuous connections, and wherein the torque transmitting devices are selectively engageable in combinations of at least three to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.