Patent ID: 8590409

Claim:
A change-speed gearbox for a motor vehicle comprising: a drive input and a drive output shaft being mounted in a main chamber ( 2 ) of a gearbox housing ( 1 ) and by which, via meshing gearwheel pairs, power flow can be transmitted by selective actuation of clutches by a shifting device, an intermediate shaft ( 4 ) with an intermediate gearwheel ( 5 ), for produce a reverse rotational direction of the drive output, being arranged in an auxiliary chamber ( 3 ) of the gearbox housing ( 1 ) and the auxiliary chamber ( 3 ) communicating with the main chamber ( 2 ), the intermediate shaft ( 4 ) being parallel to the drive input and the drive output shafts such that, when the shifting device is appropriately actuated, the power flow being directed from the drive input shaft, via the intermediate gearwheel ( 5 ) of the intermediate shaft ( 4 ), to the drive output shaft to produce the reverse rotational direction of the drive output shaft, and wherein the auxiliary chamber ( 3 ), accommodating the intermediate shaft ( 4 ), has a bell-shaped longitudinal section with an oval cross-section.