Patent ID: 9618087
Date: 2017-04-11
CPC Classifications: F16H

Claim:
1. A multi-speed transmission comprising: a transmission housing having a front portion, a center portion, and a rear portion; a first, a second, a third, and a fourth planetary gear set each having a first, a second, and a third member; an input member including an outer surface and a first, a second, a third, and a fourth bore, and wherein the input member is rotatably supported by the transmission housing, the input member is continuously interconnected with the second member of the second planetary gear set, the first, second, third and fourth bores are disposed parallel to a longitudinal axis of the input member, the first, third, and fourth bores are apply bores, and the second bore is a dam bore; an output member rotatably supported by the transmission housing, the output member continuously interconnected to the second member of the fourth planetary gear set; four interconnecting members each continuously interconnecting one of the first, second, and third members of one of the planetary gear sets with another of the first, second, and third members of another one of the planetary gear sets; an intermediate member rotatably supported by one of the four interconnecting members; a first and a second torque transmitting mechanism, each selectively interconnecting at least one of the first, second, and third members of one of the first, second, third, and fourth planetary gear sets with the transmission housing; a third torque transmitting mechanism selectively interconnecting at least one of the first, second, and third members of one of the first, second, third, and fourth planetary gear sets with another one of the first, second, and third members of one of the first, second, third, and fourth planetary gear sets; a fourth, a fifth, and a sixth torque transmitting mechanism, each selectively interconnecting at least one of the first, second, and third members of one of the first, second, third, and fourth planetary gear sets with the intermediate member; and wherein the torque transmitting mechanisms are selectively engageable in combinations of no more than three to establish ten forward speed ratios and at least one reverse speed ratio between the input member and the output member, each of the torque transmitting mechanisms include a clutch pack and an actuating assembly, the actuating assembly of the first torque transmitting mechanism is supported by the center portion of the transmission housing, and the actuating assembly of the second torque transmitting mechanism is supported by the rear portion of the transmission housing, and the intermediate member rotates freely with respect to the first, second, and third members of each of the first, second, third, and fourth planetary gear sets when each of the fourth, fifth, and sixth torque transmitting mechanisms are disengaged.