Patent ID: 8636617
Filing Date: 2014-01-28
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, and wherein the input member is directly connected to the second planetary gear set and the output member is directly connected to the first planetary gear set and third planetary gear set; a first interconnecting member for continuously interconnecting at least one member of at least one of the planetary gear sets with at least one other member of at least one other of the planetary gear sets, a second interconnecting member continuously interconnecting the second member of the first planetary gear set with the third member of the third planetary gear set, a third interconnecting member continuously interconnecting the third member of the second planetary gear set with the second member of the third planetary gear set, a fourth interconnecting member continuously interconnecting the second member of the third planetary gear set with the second member of the fourth planetary gear set, and a fifth interconnecting member continuously interconnecting the third member of the third planetary gear set with the third member of the fourth planetary gear set; and seven torque transmitting devices each selectively engageable to interconnect at least one of the first, second, and third members with at least one other of the first members, second members, third members, a stationary member, and the input member, and wherein the seven torque transmitting devices include four brakes and three clutches and are selectively engageable in combinations of at least two to establish a plurality of forward speed ratios and at least one reverse speed ratio between the input member and the output member.