Patent ID: 6702700
Filing Date: 2004-03-09
Classification: F16H

Abstract:
An automatic transmission apparatus, comprising:a first shaft arranged on an engine side to receive input power; a second shaft arranged substantially parallel with said first shaft; first and second planetary gear trains disposed on said second shaft, at least one of said first and second planetary gear trains having a first structural element to input power, at least one of said first and second planetary gear trains having a second structural element to input power, at least one of said first and second planetary gear trains having a fourth structural element to input power, and at least one of said first and second planetary gear trains having a third structural element to output power; first and second pairs of counter gears coupling said first shaft with said first, second, and fourth structural elements of said planetary gear trains, each of said first and second pairs of counter gears having a different gear ratio; and a plurality of coupling elements including first, second, and third clutches and first and second brakes, seven speed levels being obtained by selectively coupling two of said plurality of coupling elements to control a power transmission path, the power being input to said first structural element of said planetary gear trains via said first clutch and said first pair of counter gears, the power being input to said second structural element of said planetary gear trains via said second clutch and said second pair of counter gears, the power being input to said fourth structural element of said planetary gear trains via said third clutch and said second pair of counter gears, said third structural element of said planetary gear trains being adapted to be connected to an output shaft, and said first brake being provided so as to brake rotations of said second structural element.