Patent ID: 8523728

Claim:
A multi-speed automatic transmission of a planetary design for a motor vehicle, the transmission comprising: a transmission housing; an input shaft; an output shaft; a first planetary gear set, a second planetary gear set, a third planetary gear set and a fourth planetary gear set; each of the first, the second, the third and the fourth planetary gear sets comprising three elements; a first shifting element for releasably connecting one element of the first planetary gear set and one element of the fourth planetary gear set to the transmission housing; a second shifting element for releasably connecting another element of the first planetary gear set to the transmission housing; a third shifting element at least for releasably connecting one element of the third planetary gear set to the input shaft; a fourth shifting element for releasably connecting one element of the third planetary gear set at least to one element of the second planetary gear set; and a fifth shifting element for releasably connecting one element of the second planetary gear set at least to one element of the fourth planetary gear set; wherein the input shaft is directly connected to one element of the fourth planetary gear set so as to constantly rotate in unison therewith; the output shaft is directly connected to one element of the third planetary gear set so as to constantly rotate in unison therewith; a third shaft directly connects one element of the first planetary gear set with one element of the fourth planetary gear set; a fifth shaft directly connects one element of the second planetary gear set with one element of the third planetary gear set; a sixth shaft directly connects one element of the first planetary gear set with one element of the third planetary gear set; and a seventh shaft directly connects one element of the fourth planetary gear set with one element of the fifth shifting element.