Patent ID: 9074662
Filing Date: 2015-07-07
Classification: F16D,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 continuously connected for common rotation with the first member of the first planetary gear set and the output member is continuously connected for common rotation with the first member of the fourth planetary gear set; a first interconnecting member continuously interconnecting the second member of the first planetary gear set with the first member of the third planetary gear set; a second interconnecting member continuously interconnecting the third member of the first planetary gear set with the second member of the second planetary gear set; and a third interconnecting member continuously interconnecting the first member of the second planetary gear set with the second member of the third planetary gear set and the third member of the fourth planetary gear set; six torque transmitting mechanisms wherein three of the six torque transmitting mechanisms are each selectively engageable to interconnect at least one of the first, second and third members of the first, second, third, and fourth planetary gear sets with at least one other of the first, second, third members of the first, second, third, and fourth planetary gear sets and wherein three of the six torque transmitting mechanisms are each selectively engageable to interconnect at least one of the first, second and third members of the first, second, third, and fourth planetary gear sets with a stationary member, wherein the six torque transmitting mechanisms are selectively engageable in combinations of at least three to establish a plurality of forward speed ratios and at least one reverse speed ratio between the input member and the output member, a first of the six torque transmitting mechanisms is selectively engageable to interconnect the second member of the first planetary gear set and the first member of the third planetary gear set with the second member of the fourth planetary gear set, a second of the six torque transmitting mechanisms is selectively engageable to interconnect the first member of the first planetary gear set and the input member with the second member of the fourth planetary gear set, a third of the six torque transmitting mechanisms is selectively enqaqeable to interconnect the second member of the fourth planetary gear set with the stationary member, a fourth of the six torque transmitting mechanisms is selectively enqaqeable to interconnect the third member of the third planetary gear set with the stationary member, and a fifth of the six torque transmitting mechanisms is selectively enqaqeable to interconnect the third member of the second planetary gear set with the stationary member; and wherein the first torque transmitting mechanisms is a friction clutch having a backing plate structure against which the friction clutch acts, a biasing member disposed in the backing plate structure with a ball disposed adjacent to the biasing member, and a binary clutch disposed adjacent to the backing plate structure, and wherein the backing plate structure includes a first set of teeth opposing and for selective engagement with a second set of teeth of the second member.