Patent ID: 7980984
Filing Date: 2011-07-19
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; a first interconnecting member continuously interconnecting the first member of the first planetary gear set with a stationary element; a second interconnecting member continuously interconnecting the second member of the first planetary gear set with the third member of the second planetary gear set; a third interconnecting member continuously interconnecting the third member of the first planetary gear set with the second member of the third planetary gear set and the third member of the fourth planetary gear set; a fourth interconnecting member continuously interconnecting the second member of the second planetary gear set with the third member of the third planetary gear set; and five torque transmitting mechanisms each selectively engageable to interconnect at least one of the first, second, and third members with at least another one of the first members, second members, third members, and the stationary element, and wherein the torque transmitting mechanisms are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.