Patent ID: 6973849

Claim:
A transmission having a first input shaft connecting to a first clutch, a second input shaft, inserted in said first input shaft, connecting to a second clutch, an output shaft, a counter shaft and an idle shaft, wherein a plural number of gears are rotatably carried on said first input shaft, and a gear is fixedly carried on said first input shaft, and further a plural number of couplings to fix selectively said rotatable gears to said first input shaft are respectively attached to said rotatable gears, a plural number of gears are fixedly carried on said second input shaft, a plural number of gears engaging with said rotatable gears of said first input shaft are fixedly carried on said output shaft, a plural number of gears engaging with said fixed gears excepting designated fixed gears of said second input shaft are rotatably carried on said output shaft, an output gear connecting to a differential gear is fixedly carried on said output shaft at the clutch- most side, and further a plural number of couplings to fix selectively said rotatable gears of said output shaft are respectively attached to said rotatable gears, a plural number of gears engaging respectively with said designated fixed gears of said second input shaft being not engaged with said gears of said output shaft, and a gear connecting to one of said gears of said second input shaft engaging with said gears of said output shaft through a gear carried fixedly or rotatably on said idle shaft, are rotatably carried on said counter shaft, a gear engaging with one of a plural number of said rotatable gears of said first input shaft is fixedly carried on said counter shaft, a gear engaging with said fixed gear of said first input shaft is rotatably carried on said counter shaft, and a plural number of couplings to fix selectively a plural number of said rotatable gears to said counter shaft are attached to said rotatable gears, further, said gears of said counter shaft engaging with said fixed gears of said first input shaft and said couplings of said counter shaft are arranged in a side space of said output gear of said output shaft.