Patent ID: 7833120
Filing Date: 2010-11-16
Classification: F16H

Abstract:
1. An automatic transmission for vehicles comprising: a first shift portion outputting two intermediate rotational speeds of a reduced rotational speed and a same rotational speed as an input rotational speed by using torque received through a first variable input pathway selectively connected to a first input shaft and an input pathway fixedly connected to the first input shaft; and a second shift portion comprising first, second, third, and fourth gears and a reverse gear that respectively achieve first, second, third, and fourth gear ratios and a reverse gear ratio, changing each intermediate rotational speed received from the first shift portion into five final rotational speeds, and outputting the same; wherein the first shift portion comprises first, second, and third operating members, and wherein the first operating member receives the torque through the input pathway fixedly connected to the first input shaft, the second operating member is selectively stopped, and the third operating member receives the torque through the first variable input pathway selectively connected to the first input shaft and always operates as an output member.