Patent ID: 6490943
Filing Date: 2002-12-10
Classification: F16H,Y10T

Abstract:
A parallel shaft transmission, comprising:a first input shaft, a second input shaft, a first counter shaft and a second counter shaft, which are disposed parallel with one another; at least one set of first speed ratio gear train, each set including a first speed ratio drive gear which is disposed on said first input shaft and a first speed ratio driven gear which is disposed on said first counter shaft, said first speed ratio drive gear and said first speed ratio driven gear meshing with each other; at least one first clutching means which is disposed on said first input shaft, said first clutching means rotationally connecting and disconnecting said first speed ratio drive gear to and from said first input shaft, respectively; at least one set of second speed ratio gear train, each set including a second speed ratio drive gear which is disposed on said second input shaft and a second speed ratio driven gear which is disposed on said second counter shaft, said second speed ratio drive gear and said second speed ratio driven gear meshing with each other; at least one second clutching means which is disposed on said second input shaft, said second clutching means rotationally connecting and disconnecting said second speed ratio drive gear to and from said second input shaft, respectively; and a connection gear train used for power transmission from said first input shaft to said second input shaft; wherein: transmission output power is taken out from first and second output gears, which are mounted on said first and second counter shafts, respectively, and wherein: said second clutching means and said first and second output gears are positioned substantially on a common plane which is perpendicular to the shafts.