Patent ID: 8266985

Claim:
A device for reducing a drop in tractive force during a gear shifting phase of an automatic transmission ( 1 ) with an automatically actuated drive clutch, the device comprising: a rotary storage device ( 8 ) being connectable with a friction lock by two transmission ratio steps ( 4 , 5 ) that are each assigned a friction clutch ( 6 , 7 ) to either an output shaft ( 3 ) of the transmission ( 1 ) or, if the transmission has a downstream range group, to the output shaft of a main friction transmission, and only one of the two friction clutches ( 6 , 7 ) being activated at any time, and a step up ratio being achieved, and the rotary storage device being loaded with one of the transmission ratio steps ( 5 ) in situations outside of the gear shifting phase, and a step down ratio being achieved and energy being released from the rotary storage device ( 8 ) to the output shaft ( 3 ) with the other transmission ratio step ( 4 ) during a gear shifting phase.