Patent ID: 7731617

Claim:
An automated shift transmission for a motor vehicle having a plurality of discrete transmission stages, comprising a) a first component transmission ( 11 ) of a reduction gearing design, and b) a further component transmission ( 12 ) which has a trans-mission stage with a plurality of transmission elements forming drive elements or output elements (sunwheel 41 ; planet wheel 42 ; internal gearwheel 45 ; web 43 ), wherein c) for at least one gear (1st to 7th gear) power is transmitted via a single power path, and d) for at least one gear (8th to 12th gear) in the first component transmission ( 11 ) power branching between at least two power paths takes place and both power paths are combined in the further component transmission ( 12 ), e) the first component transmission ( 11 ) having output gear-wheels ( 36 - 39 ) adapted to be connected to a transmission shaft (output shaft 25 ) via gear shifting elements ( 40 , 46 ), wherein the transmission shaft (output shaft 25 ) can be connected via a gear shifting element ( 40 ) to a trans-mission element (sun wheel 41 ) of the further component transmission ( 12 ) and can be connected via a further gear shifting element ( 46 ) to another transmission element (internal gearwheel 45 ) of the further component transmission ( 12 ), and f) a gear shifting element ( 40 ), which in a first shifted state ( 40 -I) couples a transmission element (sun wheel 41 ) of the further component transmission ( 12 ) to the transmission input shaft ( 14 ), in a second shifted state ( 40 -II) couples the transmission input, shaft ( 14 ) both to the transmission element (sun wheel 41 ) of the further component transmission ( 12 ) and to another transmission element (internal gearwheel 45 ) of the further component transmission ( 12 ), and in a third shifted state ( 40 -III) couples the transmission element (sun wheel 41 ) of the further component transmission ( 12 ) to another transmission element (internal gear-wheel 45 ) of the further component transmission ( 12 ) for causing the transmission element components to rotate in unison.