Patent ID: 7927249
Filing Date: 2011-04-19
Classification: F16H

Abstract:
1. A transmission comprising: an input member; an output member; a first planetary gear set including first, second, third, and fourth members; a second planetary gear set including first, second, and third members; a third planetary gear set including first, second, and third members; a first torque transmitting mechanism selectively engageable to interconnect the fourth member of the first planetary gear set with at least one of the input member and the first member of the second gear set; a second torque transmitting mechanism selectively engageable to interconnect the third member of the second planetary gear set with at least one of the first member of the second planetary gear set and the input member; a third torque transmitting mechanism selectively engageable to interconnect the second member of the first planetary gear set with the first member of the third planetary gear set; a fourth torque transmitting mechanism selectively engageable to interconnect the third member of the first planetary gear set with the first member of the third planetary gear set; a fifth torque transmitting mechanism selectively engageable to interconnect the second member of the first planetary gear set with the third member of the second planetary gear set; and a sixth torque transmitting mechanism selectively engageable to interconnect the second member of the third planetary gear set with a stationary member, wherein the torque transmitting mechanisms are selectively engageable to establish each of at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member, and wherein at least two torque transmitting mechanisms are disengaged in each of the at least eight forward speed ratios and the at least one reverse speed ratio.