Patent ID: 8079930
Filing Date: 2011-12-20
Classification: F16H

Abstract:
1. A powertrain of an automatic transmission comprising: a first planetary gear set having a first operating member fixedly connected to a transmission case, a second operating member, and a third operating member fixedly connected to an input shaft; a second planetary gear set having a fourth operating member fixedly connected to the second operating member, a fifth operating member, and a sixth operating member; a third planetary gear set having a seventh operating member selectively connected to the fourth operating member, the input shaft, and the transmission case, an eighth operating member selectively connected to the third operating member, the sixth operating member, and the transmission case, and a ninth operating member fixedly connected to the fifth operating member and an output shaft; and a plurality of friction members that selectively connect operating members of the first, second, and third planetary gear sets, the input shaft, and the transmission case.