Patent ID: 7313981

Claim:
A countershaft transmission ( 1 , 40 , 44 ) comprising: at least one starting element ( 2 , 41 ); at least one input shaft ( 4 , 5 , 42 ); a countershaft ( 22 ); a plurality of fixed gear wheels ( 12 , 14 ) being fastened on the at least one input shaft ( 4 , 5 , 42 ), at least a first pair of idler gear wheels ( 33 , 34 ) and a plurality of fixed gear wheels being supported by the countershaft ( 22 ), a plurality of shifting sets ( 20 , 21 , 37 , 38 ) including a first shifting set ( 38 ) rotatably supported by the countershaft ( 22 ) and coordinated with the first pair of idler gear wheels ( 33 , 34 ) for respectively engaging a first gear (G 1 ) and a third gear (G 3 ), and at least one reverse gear shaft ( 30 , 31 ) upon which is fastened at least a first fixed gear wheel ( 28 , 29 , 32 , 33 ) for a reverse gear (RG), wherein the first fixed gear wheel ( 28 , 29 , 32 , 33 ) for the reverse gear (RG) meshes with a first fixed gear wheel ( 12 , 14 ) of the plurality of fixed gear wheels ( 12 , 14 ) fastened on the at least one input shaft ( 4 , 5 , 42 ), and the first fixed gear wheel ( 14 , 12 ), of the plurality of fixed gear wheels ( 12 , 14 ) fastened on the at least one input shaft ( 4 , 5 , 42 ), forms one of the first gear (G 1 ) and a second gear (G 2 ) of the transmission.