Patent ID: 7824301
Filing Date: 2010-11-02
Classification: F16H

Abstract:
1. A gear train of an automatic transmission for vehicles, comprising: a first planetary gear set being a simple planetary gear set provided with three rotational members, wherein a first rotational member is always operated as a fixed member, a second rotational member reduces a rotational speed of an input shaft to a reduced rotational speed and forms a first intermediate output pathway where the reduced rotational speed is outputted, and a third rotational member is directly connected to the input shaft and forms a second intermediate output pathway where a rotational speed that is the same as the rotational speed of the input shaft is outputted; a second planetary gear set being a simple planetary gear set provided with three rotational members, wherein a fourth rotational member is directly connected to the second rotational member, a fifth rotational member is selectively connected to the third rotational member and is operated as a variable fixed member, and a sixth rotational member forms a third intermediate output pathway; and a third planetary gear set being a simple planetary gear set provided with three rotational members, wherein a seventh rotational member is directly connected to the sixth rotational member, an eighth rotational member is operated as a final output member, and a ninth rotational member is selectively connected to the input shaft or the seventh rotational member.