Patent ID: 7980988
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, wherein the output member is continuously interconnected to the second member of the fourth planetary gear set; a first interconnecting member continuously interconnecting the third member of the first planetary gear set with the third member of the second planetary gear set; a second interconnecting member continuously interconnecting the first member of the first planetary gear set with a stationary member; a third interconnecting member continuously interconnecting the second member of the first planetary gear set with the third member of the third planetary gear set; a fourth interconnecting member continuously interconnecting the second member of the second planetary gear set with the first member of the third planetary gear set; a fifth interconnecting member continuously interconnecting the second member of the third planetary gear set with the first member of the fourth planetary gear set; and six torque transmitting mechanisms each selectively engageable to interconnect at least one of the first, second, and third members with at least another of the first, second, third members and a stationary element, and wherein the torque transmitting mechanisms are selectively engageable in combinations of at least three to establish at least nine forward speed ratios and at least one reverse speed ratio between the input member and the output member, and wherein a plane is disposed perpendicular to an input member axis and between an end of the input member and the planetary gear sets, and the fourth planetary gear set is adjacent the plane and the first planetary gear set is remote from the plane, the second planetary gear set is adjacent the fourth planetary gear set and the third planetary gear set is disposed between the second planetary gear set and first planetary gear set.