Patent ID: 7069799

Claim:
A vehicle gearbox with an input shaft ( 9 ), a drive shaft ( 10 ) and a countershaft ( 11 ), the countershaft ( 11 ), is arranged parallel to an axis of the input and drive shafts ( 9 and 10 ) and can be connected power-wise over a first, second, third, fourth, fifth and sixth gear sets (I, II, III, IV, V and VI) and reversing near set (W) by means of a plurality of separating clutches (a, b, C, d, e, f and g), wherein a main gearbox group ( 28 ) has the first, second, third, fourth and reversing gear sets (I, II, III, IV and W), each respectively having an idler ( 20 , 21 , 22 , 23 , and 26 ) and a fixed gear ( 13 , 14 , 15 , 16 , and 19 ), and a downstream area gearbox group ( 29 ) has the fifth and sixth gear sets (V and VI) each respectively having an idler ( 24 or 25 ) and a fixed gear ( 17 or 18 ), the separating clutches (a, b, c, d, and g) and the idlers ( 20 , 21 , 22 , 23 , 26 ) of the main gearbox group ( 28 ) are arranged on the input shaft ( 11 ), the idlers ( 24 and 25 ) of the range gearbox group ( 29 ) are arranged on the countershaft ( 11 ), and wherein a gearbox schematic, a shifting mechanism and a gearbox housing for a vehicle gearbox with six forward gears ( 1 through 6 ) are equivalent to a gearbox schematic, a shifting mechanism and a gearbox housing for a vehicle gearbox with eight forward gears ( 1 to 8 ).